general specific modbus rtu protocol rev. 15 · 2018-03-22 · modbus_15_eng.doc revision: 15 of...

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file name: MODBUS_15_ENG.doc

REVISION: 15 of 22/03/18

TITLE:

MODBUS-RTU Protocol (Mach SMART / SMART Più / DUCA47-72-SP / DUCA-LCD /

DUCA-LCD96 / R5 / R8)

of 68

General Specific MODBUS – RTU protocol Rev. 15

Written: U. T. ing. L. Guerrieri _ _ _ _ _ _ _ _ _ _ _ _ _ _

Verified: A. Q. ing. F. Adinolfi _ _ _ _ _ _ _ _ _ _ _ _ _ _

Approved: D. T. ing. E. Girardi _ _ _ _ _ _ _ _ _ _ _ _ _ _

Date: 22/03/2018

Status: Final

REVISIONS

REV. VER. DATE CHANGES WRITTEN VERIFIED APPROVED

2 0 17/07/98 Adding to pages 7 Goffredo Donati Cantobelli

3 0 01/12/98 Multivariable Read Canini Goffredo Cantobelli

4 0 18/02/00 Errata corrige Zoletto Donati Amato

5 0 30/05/00 New memory map function 06 Zoletto Donati Amato

6 0 21/11/00 Functions 01 06 Zoletto Donati Amato

7 0 07/12/01 New command for SMART Più Bandini Adinolfi Amato

8 0 17/12/02

New ID for SMART96 Più; Voltage and

Current ThdF for SMART Più and

SMART96 Più. Different management of

the requests with memory overflow (from

V3.03)

Bandini

Sangiorgi Adinolfi Amato

9 0 28/11/03 New ID and Apparent energy measurement

for SMART(96) Più V3.11(KVAh) Bandini Adinolfi Amato

10 0 17/09/04 For SMART(96) Più from version V3.12.

Update new instruments ID and new range

for CT ratio

Sangiorgi Adinolfi Amato

10 Bis 0 07/07/05 DUCA47(-72-SP) – only for model

Duca47-72-SP with serial interface and

pulse outputs

Bandini Adinolfi Amato

10 Tris 0 18/01/07 Add note for DUCA47(-72-SP) answer for

Function 17h “Report slave ID” Sangiorgi Adinolfi Amato

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11 0 18/05/11 Update for models DUCA-LCD96i Sangiorgi Adinolfi Amato

12 0 05/11/14

Update for output commands with active alarms

Updated ID table for introduction of the DUCA-

LCD modelsii

Update memory map for introduction of

harmonics and THD (DUCA-LCD models)

Updated notes about binary formats used in map

Guerrieri Adinolfi Amato

13 0 01/09/17 Update for introduction of R5 / R8iii

commands and map Guerrieri Adinolfi Girardi

14 0 12/11/17 Update for introduction of R5/R8 floating

point map Guerrieri Adinolfi Girardi

15 0 22/03/18 Errata Corrige Guerrieri Adinolfi Girardi

Contents

1. COMMUNICATION FRAME IN RTU MODE (REMOTE TERMINAL UNIT) ................... 4

2. ACTIVATION OF MODBUS PROTOCOL AND AVAILABLE FUNCTIONS .................. 5

2.1 Function 01 : “READ OUTPUT STATUS” .......................................................................... 6

2.2 Function 03 : “READ HOLDING REGISTERS” ................................................................ 8

2.3 Function 05 : “FORCE SINGLE COIL” ............................................................................. 48

2.4 Function 06 : “PRESET SINGLE REGISTER” ................................................................. 49

2.5 Function 07 : “READ EXCEPTION STATUS” ................................................................. 63

2.6 Function 17 : “REPORT SLAVE ID”.................................................................................. 63

3. EXCEPTIONS ON THE BUS ....................................................................................... 66

4. CRC ALGORITHM ....................................................................................................... 67

i The models where a serial interface RS485 is available are: DUCA-LCD96 485, DUCA-LCD96 BASE-485, DUCA-LCD96 485-IO,

DUCA-LCD96 485-RELE and, if not specified, will all be listed in the document with DUCA-LCD96. ii The models where a serial interface RS485 is available are: DUCA-LCD 485 e DUCA-LCD 485-ETH and, if not specified, will all

be listed in the document with DUCA-LCD. iii The models where a serial interface RS485 is available are: R5 485, R5 485-RADIO, R8 485, R8 485-RADIO, R8 485-BT (11 relay

outputs), R8 485-BT RADIO (11 relay outpus), R8 485-USB (11 relay outputs), R8 485-USB RADIO (11 relay outputs), and if not

specified, will all be listed in the document with R5 or R8.

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1. Communication frame in RTU mode (Remote Terminal Unit)

A MODBUS frame is composed of:

T1 T2 T3

Address

(8 bits)

Function

(8 bits)

Data

(N x 8 bits)

CRC

(16 bits)

T1 T2 T3

in which:

a) the Address field contains the address of the Slave to which the message is sent

b) the Function field contains the code of the function that must be carried out by the Slave

c) the Data field contains the information needed by the Slave to carry out a specific

function or contains data collected from the Slave in response to a question

d) the CRC field allows both the Master and the Slave to check a message in order to detect

any errors in transmission. Sometimes, due to electrical “noise” or other interference, a

message may be changed during the transmission from one unit to another. The error

check ensures that neither the Master nor the Slave react to messages that have been

haltered

e) the T1 T2 T3 sequence represents the time that separates one frame from another, and

corresponds to at least 3 and a half characters: during this period no one is allowed to talk

on the bus, to let the instruments detect that a frame is over and another one is starting

In RTU mode, the synchronisation of the frame can be maintained only by simulating a

synchronous message. The receiving device, a Mach SMART for example, measures the time that

separates the reception of one character and the reception of the subsequent one (for example,

between address and function). If this time is longer than the time needed to transmit three and a half

characters, then the message is considered lost and the next character arriving is considered to be an

address, in other words the beginning of a new frame.

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2. Activation of MODBUS protocol and available functions

To activate the MODBUS protocol in the MACH SMART, Smarti Più and in DUCA47-72-SP,

“1” must be selected in the last field of the Setup indicated by “PROT” (0 = DUCBUS , 1 =

MODBUS). For R8, DUCA-LCD96 and DUCA-LCD models is necessary enter the setup menu and

set “Prot MODBUS” in the “Protocol” page of the Communication’s menu. For R5 it is necessary

enter the setup and set “Prt” = “Mod”

The available MODBUS functions are reported in the following table:

MODBUS Functions Action performed in the analyser

01 = READ OUTPUT STATUS Read data relative to the output status

03 = READ HOLDING REGISTERS Reads data relative to the Measurements and the Setup

05 = FORCE SINGLE COIL Set the output state

06 = PRESET SINGLE REGISTER Sets Setup parameters

07 = READ EXCEPTION STATUS Reads Instrument status

17 = REPORT SLAVE ID Reads the identification of the instrument type

IMPORTANT NOTE REGARDING FUNCTIONS 3 AND 6 DESCRIBED BELOW:

Whenever the user employs commercial programs for reading the data from the Slaves, and

these programs are already designed for handling the MODBUS protocol, it is necessary to use the

addresses of the storage locations indicated in the first left-hand column of the tables relative to

functions 3 and 6 illustrated below.

Instead, whenever the user writes his own program to read the data it is necessary to decrease

by one the addresses reported.

For example: the Master wishes to read from Mach SMART with address 3 the value of the

three-phase equivalent current, available at memory address 18 (= 12Hex).

The communication frame of the Master to the Slave, with hexadecimal values, will be the

following:

03 03 00 11 00 02 95 EC

where:

03 = address of Mach SMART (Slave) no. 03

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03 = function requested by the Master, in this case measure reading request

00 11 = address, reduced by one unit (12H - 1H = 11H), of the storage location to be read

and containing the value of the three-phase equivalent current

00 02 = number of registers to be read beginning with address 11H

95 EC = CRC

The Slave response frame to the Master in hexadecimal values will be the following:

03 03 04 00 00 01 E0 D9 EB

in which:

03 = address of Mach SMART (Slave) no. 03

03 = function requested by the Master, in this case measure reading request

04 = number of data bytes following in the frame

00 00 01 E0 = hex value of the three-phase equivalent current (01E0H = 480 hundredths of

A = 4.8A)

D9 EB = CRC

2.1 Function 01 : “READ OUTPUT STATUS”

This function is used to read the status of the SMART96, SMART Più, DUCA-LCD or DUCA-

LCD96 output; the output is treated like a coil, following MODBUS standard.

The request and answer frame are described below:

Read request (master):

Addr Func Coil Addr

Start H

Coil Addr

Start L

Number of

Coils H

Number of

Coils L

CRC CRC

1Fh 01h 00h 00h 00h 08h 3Eh 72h

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In the example above the “read output function” Func = 01 is sent to the slave with address Addr =

1Fh, starting from register Coil Addr Start = 0000h (compulsory) for Number of coils = 08h

(compulsory) adjacent coils. The frame is closed with CRC=3E72h.

Reply (slave):

Addr Func Byte

Count

Data Coil

Byte 0H

CRC CRC

1Fh 01h 01h 00h 57h A0h

The answer fields, as described above, are the slave address Addr = 1Fh, the function executed

Func = 01, the number of data bytes following Byte Count = 01h, the coil value 00h. In the SMART 96

the 5th

bit is its only output, all the others are forced to 0; for the SMART Più the relevant bits are bit

0 and bit 1 (1st

and 2nd

bit respectively for output 1 and output 2); for models DUCA-LCD and

DUCA-LCD96 are bit 0 and bit 1 (1st

and 2nd

bit respectively for output 1 and output 2);

furthermore, only for model DUCA-LCD96 485-RELE, bit 2 and bit 3 are related respectively to

output 3 and output 4. The frames ends with the CRC.

This function is available in the SMART 96 from version 1.01 onwards and for model 2P of

SMART Più. For DUCA47(-72)-SP the command is not operational.

This function is also used to read the status of the R5 or R8 output; the output is treated like a coil,

following MODBUS standard.

The request and answer frame are described below:


Addr Func Coil Addr

Start H

Coil Addr

Start L

Number of

Coils H

Number of

Coils L

CRC CRC

1Fh 01h 00h 00h 00h 10h 3Eh 78h

In the example above the “read output function” Func = 01 is sent to the slave with address Addr =

1Fh, starting from register Coil Addr Start = 0000h (compulsory) for Number of coils = 10h

(compulsory) adjacent coils. The frame is closed with CRC=3E78h.

Reply (slave):

Addr Func Byte

Count

Data Coil

Byte 1H

Data Coil

Byte 0H

CRC CRC

1Fh 01h 02h 00h 00h 11h FEh

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The answer fields, as described above, are the slave address Addr = 1Fh, the function executed

Func = 01, the number of data bytes following Byte Count = 02h, the coil value 0000h.

For R5, bit 0, bit 1, bit 2, bit 3 and bit 4 are respectively associated with relay output 1, relay

output 2, relay output 3, relay output 4 and relay output 5.

For R8, bit 0, bit 1, bit 2, bit 3, bit 4, bit 5, bit 6, bit 7, bit 9 and bit 10 are respectively associated

with relay output 1, relay output 2, relay output 3, relay output 4, relay output 5, relay output 6, relay

output 7, relay output 8, relay output 9, relay output 10 and relay output 11.

2.2 Function 03 : “READ HOLDING REGISTERS”

This function reads one or more memory adjacent locations, each one being 1 or 2-word sized. It is

possible to read up to 12 or 24iv consecutive measures*. Moreover SMART Più can read a Mix of

measures previously configured (see 2.4).

Below are described the read request format (from master to slave) and the reply format (from

slave to master).


Addr Func Data Start

Register H

Data Start

Register L

Data # of

Regs H

Data #

Regs L

CRC CRC

1Fh 03h 00h 11h 00h 08h 17h B7h

In the example above, the master sends the ‘read function’ Func = 03 to the slave with address

Addr = 1Fh, starting from base register address Data Start Register = 0011h for Data Regs = 08h

consecutive registers. So the command reads all registers from address 0011h to 0018h. The CRC =

17B7h closes the data stream.

(Note: the physical address is always obtained from measure address reduced of 1 unit, see note

above).

Reply (slave):

Addr Func Byte

count

Data Out Reg

0012 H

Data Out Reg

0012 L

…… Data Out

Reg 0018H

Data Out

Reg 0018L

CRC CRC

1Fh 03h 10h 10h EFh …….. 3Bh 40h xxh yyh

iv SMART Più family, DUCA47(-72)-SP, DUCA-LCD, DUCA-LCD96, R5 and R8 family: 24 measures. * Mach SMART with firmware versions earlier than 1.H07 allow only one value (2 words) per enquiry to be read.

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The table above shows the fields in the MACH SMART reply, which are :

-Addressed Slave Addr = 1Fh

-Function code request Func = 03

-Number of data byte following Byte Count = 10h

-Data byte fields requested by the master

-CRC closes the reply data stream

There are three particular cases that can happen using this command; the first is related to the

quantity of requested memory, the second is related to the beginning of the requested segment and the

last is related to the quantity of the requested words.

In particular, if the quantity of the requested bytes is greater than the MACH’s memory extension, the

instrument will answer an “INVALID DATA” for the not available values; for example, if are

requested 20 bytes from the last fourth valid address, a part of the request overflows in the not

available memory. The exceeded bytes will be filled by the SMART with the value FFhv, indicating a

not managed value for those memory cells.

The second particular case is related to a request starting from a not valid address, when the request

starts from an address not present in the following table. In this case the instrument will answer with

an exception “02 ILLEGAL DATA ADDRESS” (see chapter 3).

The last particular case is the request of a number of word greater than the maximum for the

instrument: in this case the instrument will answer with an exception “02 ILLEGAL DATA address”

(see chapter 3).

Memory map

The following table indicates the correspondence between the address of the location, the number

of accessible words beginning with that address, the description of the measurement value, the unit of

measurement of the measurement value and the binary format.

Formats of the variables passed:

- Unsigned Long: means a binary number of 2 words (32 bits) unsigned

- Bit Signed Long: means a binary number of 2 words (32 bits) if not, the MSB is set to 1. For

example: 8000 0007h = -7.

- Signed Int: means a binary 2’s-complement number

- Unsigned Int: is a binary number of 1-word (16-bit) unsigned

v SMARTPiù from V. 3.03 on; in the V. 3.00 the slave answer at this request was an exception 02.

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Add. Word Measurement description Unit Format

0002 2 Frequency Tenths of Hz Unsigned Long

0004 2 Three-phase Equivalent Voltage V Unsigned Long

0006 2 Linked Voltage (line 1 - line 2)vi V Unsigned Long



0012 2 Voltage between Phase and Neutral line 1vi V Unsigned Long



0018 2 Three-phase Equivalent Current Hundredths of A Unsigned Long

0020 2 Current Line 1vi Hundredths of A Unsigned Long



0026 2 Three-phase equivalent power factor* Hundredths bit-Signed /

Unsigned Longvii

0028 2 Power factor line 1* vi Hundredths bit-Signed Long



0034 2 Three-phase equivalent active power W bit-Signed

Longviii

0036 2 Average three-phase equivalent active power W bit-Signed

Longviii

0038 2 Maximum three-phase equivalent active

power

W bit-Signed

Longviii

0040 2 Active power line 1vi W bit-Signed

Longviii


Longviii


Longviii

0046 2 Average active power line 1vi W bit-Signed

Longviii


Longviii

vi Not available for R5 and R8 Models vii For SMART Più, DUCA47(-72)-SP, DUCA-LCD and DUCA-LCD96 this value is a bit-Signed Long. viii For models DUCA-LCD and DUCA-LCD96 the values of Active Power could be negatives in Cogeneration.

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Longviii

0052 2 Maximum active power line 1vi W bit-Signed

Longviii


Longviii


Longviii

0058 2 Three-phase equivalent apparent power VA bit-Signed Long

0060 2 Average three-phase equivalent apparent

power

VA Unsigned Long

0062 2 Maximum three-phase equivalent apparent

power

VA Unsigned Long

0064 2 Apparent power line 1vi VA Unsigned Long



0070 2 Average apparent power line 1vi VA Unsigned Long



0076 2 Maximum apparent power line 1vi VA Unsigned Long



0082 2 Three-phase equivalent reactive power VAr bit-Signed Longix

0084 2 Average three-phase equivalent reactive

power

VAr bit-Signed Longix

0086 2 Maximum three-phase equivalent reactive

power

VAr bit-Signed Longix

0088 2 Reactive power line 1vi VAr bit-Signed Longix



0094 2 Average reactive power line 1vi VAr bit-Signed Longix



0100 2 Maximum reactive power line 1vi VAr bit-Signed Longix


ix For models DUCA-LCD and DUCA-LCD96 the values of Reactive Power could be negative (positive if inductive, negative if

capacitive).

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0106 2 Three-phase equivalent active energy Tens of Wh Unsigned Long

0108 2 Active energy line 1vi Tens of Wh Unsigned Long



0114 2 Three-phase equivalent reactive/apparent

energy x

Tens of

VArh/VAh

Unsigned Long

0116 2 Reactive/Apparent energy line 1 x vi Tens of

VArh/VAh

Unsigned Long


VArh/VAh

Unsigned Long


VArh/VAh

Unsigned Long

0122 2 Max. average three-phase active power W bit-Signed

Longviii

0124 2 Line 1 normal format voltage ThdF (only for

DUCA-LCD96 and DUCA-LCD; for

SMART Più and SMART96 Più from

revision V. 3.10)& vi

Hundredths Unsigned Long


DUCA-LCD96 and DUCA-LCD& vi



DUCA-LCD96 and DUCA-LCD) & vi


0130 2 Line 1 normal format current ThdF (only for

DUCA-LCD96 and DUCA-LCD; for

SMART Più and SMART96 Più from

revision V. 3.10) &

vi



DUCA-LCD96 and DUCA-LCD)& vi



DUCA-LCD96 and DUCA-LCD) &

vi


0136 2 Maximum Average Active Power line 1

(only for DUCA-LCD96 and DUCA-LCD) vi

W bit-Signed Long

x The DUCA-LCD96, DUCA-LCD and DUCA47(-72)-SP return always the Reactive Energy; the SMART Più and the SMART96

Più, version 3.11 or later, return the Apparent Energy when the CFG parameter is set to 28, 33 or 38, otherwise the Reactive Energy.

Not valid for other instruments.

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W bit-Signed Long



W bit-Signed Long

0142 2 Max. average three-phase Apparent Power

(only for DUCA-LCD96 and DUCA-LCD)

VA Unsigned Long

0144 2 Maximum Average Apparent Power line 1


VA Unsigned Long



VA Unsigned Long



VA Unsigned Long

0150 2 KV constant $ (VT transformation ratio) Unit Unsigned Long

0152 2 KA constant $ (CT transformation ratio) Unit Unsigned Long

0154 2 Time of Average Minute Unsigned Long

0156 2 Average Active Power from pulses input

(CH1) – only for DUCA-LCD and DUCA-

LCD96 485-IO

W Unsigned Long

0158 2 Average Reactive Power from pulses input

(CH2) – only for DUCA-LCD and DUCA-

LCD96 485-IO

VAr Unsigned Long

0160 2 Active Energy from pulses input (CH1) –

only for DUCA-LCD and DUCA-LCD96

485-IO

Tens of Wh Unsigned Long

0162 2 Reactive Energy from pulses input (CH2) –

only for DUCA-LCD and DUCA-LCD96

485-IO

Tens of VArh Unsigned Long

0164 2 Current threshold for timer 2 activation (only

for DUCA-LCD and DUCA-LCD96). Note:

the read value does not include the value of

KA

Hundredths of A Unsigned Long

0166 2 Three-phase equivalent Apparent Energy Tens of VAh Unsigned Long

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(only for DUCA-LCD and DUCA-LCD96)

0168 2 Apparent Energy line 1 (only for DUCA-

LCD and DUCA-LCD96)

Tens of VAh Unsigned Long


LCD and DUCA-LCD96)



LCD96)


0174 2 Generated Three-phase equivalent Active

Energy (only for DUCA-LCD and DUCA-

LCD96)


0176 2 Generated Active Energy line 1 (only for

DUCA-LCD and DUCA-LCD96)








0182 2 Generated Three-phase equivalent Reactive


LCD96)


0184 2 Generated Reactive Energy line 1 (only for









0190 2 Generated Three-phase equivalent Apparent


LCD96)


0192 2 Generated Apparent Energy line 1 (only for









0198 2 Not used - -

0200 2 1st measure configured for the Mix

+ vi Depend Long

0202 2 2nd

measure configured for the Mix+ vi Depend Long

0204 2 3rd


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0206 2 4th


0208 2 5th


0210 2 6th


0212 2 Total Harmonic Distortion (THDI1) current

line 1 (only for Duca-LCD and R5/R8)

‰ (thousandths of

fundamental harmonic)

Unsigned Long


line 2 (only for Duca-LCD)

‰ (thousandths of


Unsigned Long



‰ (thousandths of


Unsigned Long

0218 2 Total Harmonic Distortion (THDV1) voltage

line 1 (only for Duca-LCD and R5/R8)

‰ (thousandths of


Unsigned Long



‰ (thousandths of


Unsigned Long



‰ (thousandths of


Unsigned Long

0224 2 Max frequency xi Tens of Hz Unsigned Long

0226 2 Min frequency xi Tens of Hz Unsigned Long

0228 2 Maximum Three-phase Equivalent Current xi Hundredths of A Unsigned Long

0230 2 Minimum Three-phase Equivalent Currentxi Hundredths of A Unsigned Long

0232 2 Average Three-phase Equivalent Currentxi Hundredths of A Unsigned Long

0234 2 Maximum Average Three-phase Equivalent

Currentxi

Hundredths of A Unsigned Long

0236

…

0262

Not used - -

0264 2 Maximum Three-phase Equivalent Voltagexi Volt Unsigned Long

0266 2 Minimum Three-phase Equivalent Voltagexi Volt Unsigned Long

0268

…

0290

Not used - -

0292 2 Minimum Three-phase Equivalent Voltage

Apparent Powerxi

VA Unsigned Long

0294

…

Not used - -

xi Only for R5 and R8 Models

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0298


Active Powerxi

Watt bit-Signed Long

0302

…

0306

Not used - -


Reactive Powerxi

VAr bit-Signed Long

0310 2 Maximum Three-phase Equivalent Voltage

Reactive Powerxi

VAr bit-Signed Long

0312

…

0322

Not used - -

0324 2 Maximum Three-phase Equivalent Power

Factorxi

Hundredths bit-Signed Long

0326 2 Minimum Three-phase Equivalent Power

Factorxi


0328 2 Average Three-phase Equivalent Power

Factorxi


0330 2 Daily Average Three-phase Equivalent

Power Factorxi


0332 2 Weekly Average Three-phase Equivalent

Power Factorxi


0334 2 Monthly Average Three-phase Equivalent

Power Factorxi


0336

…

0352

Not used - -

0354 2 Three-phase Equivalent Cosfixi Hundredths bit-Signed Long

0356 2 Maximum Three-phase Equivalent Cosfixi Hundredths bit-Signed Long

0358 2 Minimum Three-phase Equivalent Cosfixi Hundredths bit-Signed Long

0360 2 Average Three-phase Equivalent Cosfixi Hundredths bit-Signed Long


Cosfixi



Cosfixi



Cosfixi


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0368

…

0390

Not used - -

0392 2 Delta-KVAr VAr bit-Signed Long


line 1xi

‰ Unsigned Long


line 1xi

‰ Unsigned Long

0398 2 Temperaturexi Tens of °C bit-Signed Long

0400 2 Maximum temperaturexi Tens of °C bit-Signed Long

0402 2 Minimum temperaturexi Tens of °C bit-Signed Long

0404 2 Maximum Total Harmonic Distortion

(THDI1) current

‰ Unsigned Long


(THDV1) voltage

‰ Unsigned Long

0408 Not used - -

0410 2 Number of insertion C1xi Unit Unsigned Long





0420 2 Number of insertion C6xii Unit Unsigned Long






0432

…

0468

Not used - -

0470 2 Contact operation C1xi Unit Unsigned Long





0480 2 Contact operation C6xii Unit Unsigned Long

xii Only for R8 Models

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0492

…

0528

Not used - -

0530 2 Real power step C1xi VAr Unsigned Long





0540 2 Real power step C6xii VAr Unsigned Long






0552

…

0588

Not used - -

0590 2 Working time C1xi hours Unsigned Long





0600 2 Working time C6xii hours Unsigned Long






0612

…

0648

Not used - -

0650 2 High voltage alarm number xi Unit Unsigned Long

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0652 2 High current alarm number xi Unit Unsigned Long

0654 2 Low voltage alarm number xi Unit Unsigned Long

0656 2 Low current alarm number xi Unit Unsigned Long

0658 2 THDI% alarm number xi Unit Unsigned Long

0660 2 THDV% alarm number xi Unit Unsigned Long

0662 2 Temperature alarm number xi Unit Unsigned Long

0664 2 High cosfi alarm number xi Unit Unsigned Long

0666 2 Low cosfi alarm number xi Unit Unsigned Long

0668 2 Voltage dip alarm number xi Unit Unsigned Long

0670 2 1° mix list value xi Depend Depend
























0718 2 Number of fan alarmxii Unit Unsigned Long

0720 2 Minimum Total Harmonic Distortion

(THDI1) current line

‰ Unsigned Long

0722 2 Minimum Total Harmonic Distortion ‰ Unsigned Long

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(THDV1) voltage line

0724

…

0746

Not used - -

0748 2 Maximum Delta-KVAr VAr bit-Signed Long

0750 2 Minimum Delta-KVAr VAr bit-Signed Long

0752 2 Average Delta-KVAr VAr bit-Signed Long

0754 2 Maximum Average Delta-KVAr VAr bit-Signed Long

0756 2 Daily Average Delta-KVAr VAr bit-Signed Long

0758 2 Weekly Average Delta-KVAr VAr bit-Signed Long

0760 2 Monthly Delta-KVAr VAr bit-Signed Long

0762 2 Alarms Statusxi(a) Unit Unsigned Long

0764 2 Battery Breakage Statusxi (b)

Unit Unsigned Long

0766 2 Maximum Battery Insertion Statusxi ( c )

Unit Unsigned Long

0768

…

1999

Not used - -

1000 1 Harmonic module H0 current line 1 (only for

Duca-LCD) β

‰ (thousandths of


Unsigned Int

1001 1 Harmonic Module H1 current line 1 (only for

Duca-LCD) β

‰ (thousandths of


Unsigned Int

1002

…

1030

… Harmonic Module Hn current line 1 (only for

Duca-LCD and R8) β

‰ (thousandths of


Unsigned Int

1031 1 Harmonic module H31 current line 1 (only

for Duca-LCD and R8) β

‰ (thousandths of


Unsigned Int

1032

…

1059

… Harmonic module Hn current line 1 (only for

R8) β

‰ (thousandths of


Unsigned Int


for R8) β

‰ (thousandths of


Unsigned Int

1061

…

1099

Not used Unsigned Int

1100 1 Harmonic module H0 voltage line 1 (only for

Duca-LCD) β

‰ (thousandths of


Unsigned Int

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1101 1 Harmonic Module H1 voltage line 1 (only for

Duca-LCD) β

‰ (thousandths of


Unsigned Int

1102

…

1130

… Harmonic Module Hn voltage line 1 (only for

Duca-LCD and R8) β

‰ (thousandths of


Unsigned Int

1131 1 Harmonic module H31 voltage line 1 (only

for Duca-LCD and R8) β

‰ (thousandths of


Unsigned Int

1132

…

1159

… H Harmonic Module Hn voltage line 1 (only

for R8) β

‰ (thousandths of


Unsigned Int


for R8) β

‰ (thousandths of


Unsigned Int

1161

…

1199

1 Not used


Duca-LCD) β

‰ (thousandths of


Unsigned Int


Duca-LCD) β

‰ (thousandths of


Unsigned Int

1202

…

1230


Duca-LCD) β

‰ (thousandths of


Unsigned Int


for Duca-LCD) β

‰ (thousandths of


Unsigned Int

1232

…

1299

Not used


Duca-LCD) β

‰ (thousandths of


Unsigned Int


Duca-LCD) β

‰ (thousandths of


Unsigned Int

1302

…

1330


Duca-LCD) β

‰ (thousandths of


Unsigned Int


for Duca-LCD) β

‰ (thousandths of

Unsigned Int

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fundamental harmonic) 1332

…

1399

Not used


Duca-LCD) β

‰ (thousandths of


Unsigned Int


Duca-LCD) β

‰ (thousandths of


Unsigned Int

1402

…

1430


Duca-LCD) β

‰ (thousandths of


Unsigned Int


for Duca-LCD) β

‰ (thousandths of


Unsigned Int

1432

…

1499

Not used ‰ (thousandths of


Unsigned Int


Duca-LCD) β

‰ (thousandths of


Unsigned Int


Duca-LCD) β

‰ (thousandths of


Unsigned Int

1502

…

1530


Duca-LCD) β

‰ (thousandths of


Unsigned Int


for Duca-LCD) β

‰ (thousandths of


Unsigned Int

1532

…

1999

Not used - -

2000 2 CT primary xi A Unsigned Long

2002 2 CT secondary xi A Unsigned Long

2004 2 CT phase insertion xi Unit Unsigned Long

2006 2 Enable CT inversion xi Unit Unsigned Long

2008 2 Enable cogeneration xi Unit Unsigned Long

2010 2 Frequency mode xi Unit Unsigned Long

2012 2 VT primary xi Volt Unsigned Long

2014 2 VT secondary xi Volt Unsigned Long

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2016 2 Voltage phase xi Unit Unsigned Long

2018 2 Step voltage xi Volt Unsigned Long

2020 2 Enable manual mode xi Unit Unsigned Long

2022 2 Target cosfi xi thousandths bit-Signed Long

2024 2 Cosfi tolerance xi thousandths Unsigned Long

2026 2 Capacitor discharge time xi Sec Unsigned Long

2028 2 Connection time: connection/disconnection

time between consecutive switching xi

Sec Unsigned Long

2030 2 Relay Output 1 function xi Unit Unsigned Long

2032 2 Step C1 power xi VAr Unsigned Long

2034 2 Alarm type for output 1 xi Unit Unsigned Long













2060 2 Relay Output 6 function xii Unit Unsigned Long

2062 2 Step C6 power xii VAr Unsigned Long

2064 2 Alarm type for output 6 xii Unit Unsigned Long






2076 2 Alarm type for output 8xii Unit Unsigned Long






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2094 2 Alarm type for output 11xii Unit Unsigned Long

2210 2 Integration time for average values xi Min Unsigned Long

2212 2 Communication protocol xi Unit Unsigned Long

2214 2 Serial communication address xi Unit Unsigned Long

2216 2 Serial communication baudrate xi Unit Unsigned Long

2218 2 High voltage alarm threshold xi % of VT

primary

Unsigned Long

2220 2 High voltage alarm delay xi sec Unsigned Long

2222 2 High current alarm threshold xi % of CT primary Unsigned Long

2224 2 High current alarm delay xi sec Unsigned Long

2226 2 Low voltage alarm threshold xi % of VT

primary

Unsigned Long

2228 2 Low voltage alarm delay xi sec Unsigned Long

2230 2 Low current alarm threshold xi (% of CT

primary) x 2

Unsigned Long

2232 2 Low current alarm delay xi sec Unsigned Long

2234 2 THDV% alarm threshold xi % Unsigned Long

2236 2 THDV% alarm delay xi sec Unsigned Long

2238 2 THDI% alarm threshold xi % Unsigned Long

2240 2 THDI% alarm delay xi sec Unsigned Long

2242 2 Temperature alarm threshold xi °C Unsigned Long

2244 2 Temperature alarm delay xi sec Unsigned Long

2246 2 Enable disconnection time xi Unit Unsigned Long

2248 2 Disconnection time xi Unit Unsigned Long

2250 2 PFC algorithm evaluation time xi Unit Unsigned Long

2252 2 Transient exhaustion time for disinsertion xi Unit Unsigned Long

2254 2 Transient exhaustion time for insertion xi Unit Unsigned Long

2256 2 Enable stability control for sliding win. avg. xi

Unit Unsigned Long

2258 2 Percentage deviation for sliding win. avg.xi Unit Unsigned Long

2260 2 Inductors presence xi Unit Unsigned Long

2262 2 Degradation threshold 1 (without inductors) xi

Unit Unsigned Long

2264 2 Breakage threshold 1(without inductors) xi Unit Unsigned Long

2266 2 Degradation threshold 2 (with inductors) xi Unit Unsigned Long

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2268 2 Breakage threshold 2 (with inductors) xi Unit Unsigned Long

2270 2 Enable alarm reset xi Unit Unsigned Long

2272 2 Enable harmonic analisys xi Unit Unsigned Long

2274 2 Autodiagnostic threshold xi Unit Unsigned Long

2276 2 868MHz address xi Unit Unsigned Long

2278 2 868MHz channel xi Unit Unsigned Long

2280 2 868MHz power xi Unit Unsigned Long

2282 2 Network type xi Unit Unsigned Long

2284 2 Instrument ID xi Unit Unsigned Long

2286 2 Serial number: week xi Unit Unsigned Long

2288 2 Serial number: year xi Unit Unsigned Long

2290 2 Serial number: sequential number xi Unit Unsigned Long

2292 2 FW version: major xi Unit Unsigned Long

2294 2 FW version: sub xi Unit Unsigned Long

2296 2 Bootloader version: major xi Unit Unsigned Long

2298 2 Bootloader version: sub xi Unit Unsigned Long

2300 2 Log periodxii sec Unsigned Long

2302 2 Fisrt measure logxii Unit Unsigned Long

2304 2 Second measure logxii Unit Unsigned Long

2306 2 Voltage dip duration xi msec Unsigned Long

2308 2 Manual status C1xi Unit Unsigned Long

2310 2 Manual status C2 xi Unit Unsigned Long




2318 2 Manual status C6 xii Unit Unsigned Long






2330

…

2388

Not used - -

2390 2 Phase offset xii ° Unsigned Long

2392 2 Setpoint cosfi 2 xii thousandths Unsigned Long


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2398 2 Band B1xii Unit Unsigned Long




2406 2 Step disconnection xii Unit Unsigned Long

2408 Not used - -

2410 Not used - -

2412 Not used - -

2414 Not used - -

2416 Not used - -

2418 Not used - -

2420 2 Fan control threshold xii °C Unsigned Long

2422 2 Fan control delay xii sec Unsigned Long

2424 2 High cosfi alarm delay xi min Unsigned Long

2426 2 Low cosfi alarm delay xi min Unsigned Long

2428 2 Language xii Unit Unsigned Long

2430 2 Temperature measurement unit xii Unit Unsigned Long

2432 Not used - -

2434 Not used - -

2436 2 Backlight level xii Unit Unsigned Long

2438 2 Automatic backlight turn-off xii Unit Unsigned Long

2440 2 LCD display contrast xii Unit Unsigned Long

2442 2 Summertime xii Unit Unsigned Long

2444 2 Imax harmonic xi mA Unsigned Long

2446 2 Alarm mask xi Unit Unsigned Long

2448 2 Language version: major xi Unit Unsigned Long

2450 2 Language version: sub xi Unit Unsigned Long

2452 2 Max connection time xi hours Unsigned Long

(*)

Regarding the power factor, please note that:

power factor of the three lines may be negative; the instruments report negative numbers

with the most significant bit (the 32nd

) high (1) in case of negative Power Factor (capacitive),

while positive numbers have the same bit low (0) in case of positive Power Factor

(inductive).

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when the power factor for a line is undefined (current is zero), the instruments return the

value “2” (200 cents) to report about this situation

(+) For the Mix of measure pay attention to the follows:

it is available only for SMART Più / SMART96 Più release V. 3.03 or later. This feature is

not present in the other instruments (for R5 / R8 refer to addresses 670..716)

if not set or after a global reset, the measures are set to the first 6 measures of the list

(frequency, three-phase equivalent voltage...)

(&) For the voltage and current ThdF pay attention to the followings:

the ThdF represents the normalised voltage and current crest factor

it is available only for SMART Più and SMART 96 Più from revision V. 3.10 and for

DUCA-LCD96

if the instruments SMART Più or SMART96 Più are configured with PAR function, they

respond to the measure’s request in the same way as the measure didn’t exist

the memories 126, 128 and 132, 134 are reserved for line 2 and line 3 ThdF and are

significant only for the model DUCA-LCD96, since the SMART Più and SMART 96 Più

measure the ThdF only from the line 1

even if the instrument is set to display the ThdF % (percentage format), when the memory

values corresponding to the addresses from 124 to 134 are requested, it answers always with

the corresponding ThdF in normal format

in case the ThdF isn’t computable (e.g. when current = 0), the instrument provides two

words equal to FFFFh, corresponding to an INVALID DATA

($) For R5, R8, DUCA-LCD and DUCA-LCD96 the reading of KA or KV returns the ratio, set in

the instrument, between the current (voltage) of primary and the current (voltage) of secondary.

For example, if in the setup menu was set for the CT ratio the value 100/5, then the MODBUS

command returns 20.

(a) Reading the Alarms status, please note that:

the value is to convert in bit-field (1 = ON and 0 = OFF) and the meaning of the bit are

shown in the table below.

For R8:

Bit0 High voltage alarm status

Bit1 High current alarm status

Bit2 Low voltage alarm status

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Bit3 Low current alarm status

Bit4 THDI% alarm status

Bit5 THDV% alarm status

Bit6 Temperature alarm status

Bit7 Fan alarm status

Bit8 High cosfi alarm status

Bit9 Low cosfi alarm status

Bit10 Voltage dip alarm status

For R5:

Bit0 High voltage alarm status

Bit1 High current alarm status

Bit2 Low voltage alarm status

Bit3 Low current alarm status

Bit4 THDI% alarm status

Bit5 THDV% alarm status

Bit6 Temperature alarm status

Bit7 High cosfi alarm status

Bit8 Low cosfi alarm status

Bit9 Voltage dip alarm status

(b) Reading the battery breakage status, please note that:

the value is to convert in bit-field (1 = BROKEN and 0 = OK) and the meaning of the bit are

shown in the table below.

For R5:

Bit0 C1 step breakage status





For R8:


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(c) Reading the maximum battery insertion status, please note that:

the value is to convert in bit-field (1 = EXCEEDED and 0 = OK) and the meaning of the bit

are shown in the table below.

For R5:

Bit0 C1 maximum battery insertion status





For R8:












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(β) Calculation of the harmonic registers addresses

Formula for calculation of register address of Harmonic Module n-th of current line k

nkHiADDR kn )1(*1001000)( n = 2, …, 31 e k = 1, 2, 3 (DUCA-LCD)

n = 2, …, 60 e k = 1 (R8)

Formula for calculation of address register of Harmonic Module n-th of voltage line k

nkHvADDR kn )1(*1001300)( n = 2, …, 31 e k = 1, 2, 3 (DUCA-LCD)

n = 2, …, 60 e k = 1 (R8)

Example of reading a block of 6 Mixed measure:

Addr Func Start

Register H

Start

Register L

Num. Data

H

Num. Data

L

CRC CRC

1Fh 03h 00h C7h 00h 0Ch F7h 8Ch

In the example it set a reading of 12 bytes from index 200 ( minus 1 therefore 199).

Note: “INVALID DATA” is shown = FFFFh.

Example of reading an Harmonic value:

Addr Func Start

Register H

Start

Register L

Num. Data

H

Num. Data

L

CRC CRC

1Fh 03h 04h BCh 00h 02h 07h 61h

In the example it set a reading of 7th

Harmonic module of current line 2: reading of 2 bytes

starting from address1213 (minus 1 therefore 1212)

Notes:

“INVALID DATA” for Harmonic modules and THD values is shown = FFFFh.

“INVALID DATA” for Real and Imaginary parts is shown = 7FFFh.

If the fundamental frequency measured by the instrument is different from 50Hz or 60Hz or if the

Line-neutral voltages and line currents are less than 20VRMS and 0,3ARMS the values of THD,

Harmonic modules and Real / Imaginary parts will be INVALID

Real and Imaginary parts of Current and Voltage harmonics for DUCA-LCD DIN

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Only for DUCA-LCD DIN model it is available the following table:

1600 2 αi1 factor for harmonic module conversion

current line 1 (£)

(only for Duca-LCD)

- Unsigned Long

1602 2 αv1 factor for harmonic module conversion

voltage line 1 (£)

(only for Duca-LCD)

- Unsigned Long

1604 1 Real part Harmonic H1 current line 1 (only

for Duca-LCD)

- Signed Int

1605 1 Imaginary part Harmonic H1 current line 1

(only for Duca-LCD)

- Signed Int

1606 1 Real part Harmonic H1 voltage line 1 (only

for Duca-LCD)

- Signed Int

1607 1 Imaginary part Harmonic H1 voltage line 1

(only for Duca-LCD)

- Signed Int

1608

…

1723

Real and Imaginary parts Harmonic Hn

current and voltage line1 (only for Duca-

LCD) ( ¥ )

- Signed Int

1724 1 Real part Harmonic H31 current line 1

(only for Duca-LCD)

- Signed Int

1725 1 Imaginary part Harmonic H31 current line

1 (only for Duca-LCD)

- Signed Int

1726 1 Real part Harmonic H31 voltage line 1

(only for Duca-LCD)

- Signed Int


(only for Duca-LCD)

- Signed Int

1727

…

1799

Not used


current line 2 (£)

(only for Duca-LCD)

- Unsigned Long


voltage line 2 (£)

(only for Duca-LCD)

- Unsigned Long


for Duca-LCD)

- Signed Int


(only for Duca-LCD)

- Signed Int


for Duca-LCD)

- Signed Int

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(only for Duca-LCD)

- Signed Int

1808

…

1923


current and voltage line2 (only for Duca-

LCD) ( ¥ )

- Signed Int


(only for Duca-LCD)

- Signed Int



- Signed Int


(only for Duca-LCD)

- Signed Int


(only for Duca-LCD)

- Signed Int

1927

…

1999

Not used


current line 3 (£)

(only for Duca-LCD)

- Unsigned Long


voltage line 3 (£)

(only for Duca-LCD)

- Unsigned Long


for Duca-LCD)

- Signed Int


(only for Duca-LCD)

- Signed Int


for Duca-LCD)

- Signed Int


(only for Duca-LCD)

- Signed Int

2008

…

2123


current and voltage line 3 (only for Duca-

LCD) ( ¥ )

- Signed Int


(only for Duca-LCD)

- Signed Int



- Signed Int


(only for Duca-LCD)

- Signed Int

2127 1 Imaginary part Harmonic H31 voltage line 3 - Signed Int

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(only for Duca-LCD)

(¥) Calculation of the Real and Imaginary parts harmonic registers addresses

Formula for calculation of register address of Real and Imaginary parts of n-th Harmonic

of current line k

nkHiADDR kn *4)1(*2001604)][Re( n = 0, …, 31 e k = 1, 2, 3

nkHiADDR kn *4)1(*2001605)][Im( n = 0, …, 31 e k = 1, 2, 3

(£)

Factor for harmonic module conversion

In order to calculate the absolute values of harmonic modules of current and voltage

(expressed in A and V) use the following formula including the conversion factor αi e αv

(one for each phase):

58

22

10*2*2

*ImRe kknkn

kn

iiiHi

[A] n = 2, …, 31 and k = 1, 2, 3

|Hikn| = module of n-th harmonic of current line k

Re ikn = Real part of n-th harmonic of current line k

Im ikn = Imaginary part of n-th harmonic of current line k

αik = conversion factor of current line k

38

22

10*2*2

*ImRe kknkn

kn

vvvHv

[V] n = 2, …, 31 and k = 1, 2, 3

|Hvkn| = module of n-th harmonic of voltage line k

Re vkn = Real part of n-th harmonic of voltage line k

Im vkn = Imaginary part of n-th harmonic of voltage line k

αvk = convertion factor of voltage line k

Harmonic modules expressed in thousandths of the fundamental harmonic:

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1000*)‰(1k

kn

knHi

HiHi n = 2, …, 31 and k = 1, 2, 3

1000*)‰(1k

kn

knHv

HvHv n = 2, …, 31 and k = 1, 2, 3

Total Harmonic Distortion values expressed in thousandths of the fundamental

harmonic:

1000*)‰(1

2

2

k

N

n

kn

kHi

Hi

THDI

k = 1, 2, 3 and N= 21 o 31 DUCA-LCD (see Note1)

k = 1 and N= 60 (R8)

1000*)‰(1

2

2

k

N

n

kn

kHv

Hv

THDV

k = 1, 2, 3 and N= 21 o 31 DUCA-LCD (see Note1)

k = 1 and N= 60 (R8)

Note1: in the Setup menu of the instrument is possible to set the total number of harmonics

through which are calculated THD values

Floating point memory map for R5 and R8

The following table indicates the correspondence between the address of the location, the number

of accessible words beginning with that address, the description of the measurement value, the unit of

measurement of the measurement value and the binary format.

Formats of the variables passed:

- Float: means a Single-precision floating-point format (32 bits), with exponent first (example:

47F1 2007h = 12346.00).

Note: “INVALID DATA” is FFFF FFFFh, that is a Quiet NaN.

Only for R5 and R8 models it is available the following table:

Add. Word Measurement description Unit Float

10002 2 Frequency Hz Float

10004 2 Three-phase Equivalent Voltage V Float

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10006

…10016

Not Used - -

10018 2 Three-phase Equivalent Current A Float

10020

…10024

Not Used - -

10026 2 Three-phase equivalent power factor Unit Float

10028

…10032

Not Used - -

10034 2 Three-phase equivalent active power W Float

10036 2 Average three-phase equivalent active

power

W Float

10038 2 Maximum three-phase equivalent active

power

W Float

10040

…10056

Not Used - -

10058 2 Three-phase equivalent apparent power VA Float

10060 2 Average three-phase equivalent apparent

power

VA Float

10062 2 Maximum three-phase equivalent apparent

power

VA Float

10064

…10082

Not Used - -

10082 2 Three-phase equivalent reactive power VAr Float

10084 2 Average three-phase equivalent reactive

power

VAr Float

10086 2 Maximum three-phase equivalent reactive

power

VAr Float

10088

…10120

Not Used - -

10122 2 Max. average three-phase active power W Float

10124

…10140

Not Used - -

10142 2 Max. average three-phase Apparent Power VA Float

10144

…10148

Not Used - -

10150 2 KV constant $ (VT transformation ratio) Unit Float

10152 2 KA constant $ (CT transformation ratio) Unit Float

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10154

…10210

Not Used - -

10212 2 Total Harmonic Distortion (THDI1) voltage

line 1

% Float

10214

…10216

Not Used

10218 2 Total Harmonic Distortion (THDV1)

voltage line 1

% Float

10220

…10222

Not Used

10224 2 Max frequency Hz Float

10226 2 Min frequency Hz Float

10228 2 Maximum Three-phase Equivalent Current A Float

10230 2 Minimum Three-phase Equivalent Current A Float

10232 2 Average Three-phase Equivalent Current A Float

10234 2 Maximum Average Three-phase Equivalent

Current

A Float

10236

…10262

Not used - Float

0264 2 Maximum Three-phase Equivalent Voltage Volt Float

10266 2 Minimum Three-phase Equivalent Voltage Volt Float

10268

…10290

Not used - -


Apparent Power

VA Float

10294

…10298

Not used - -


Active Power

Watt Float

10302

…10306

Not used - -


Reactive Power

VAr Float

10310 2 Maximum Three-phase Equivalent Voltage

Reactive Power

VAr Float

10312…

10322

Not used - -

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10324 2 Maximum Three-phase Equivalent Power

Factor

Unit Float

10326 2 Minimum Three-phase Equivalent Power

Factor

Unit Float

10328 2 Average Three-phase Equivalent Power

Factor

Unit Float


Power Factor

Unit Float


Power Factor

Unit Float


Power Factor

Unit Float

10336

…10352

Not used - -

10354 2 Three-phase Equivalent Cosfi Unit Float

10356 2 Maximum Three-phase Equivalent Cosfi Unit Float

10358 2 Minimum Three-phase Equivalent Cosfi Unit Float

10360 2 Average Three-phase Equivalent Cosfi Unit Float


Cosfi

Unit Float


Cosfi

Unit Float


Cosfi

Unit Float

10368

…10390

Not used - -

10392 2 Delta-KVAr VAr Float


line 1

% Float

10396 2 Total Harmonic Distortion (THDV1)

voltage line 1

% Float

10398 2 Temperature °C Float

10400 2 Maximum temperature °C Float

10402 2 Minimum temperature °C Float



% Float



% Float

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10408 Not used - -

10410 2 Number of insertion C1 Unit Float





10420 2 Number of insertion C6xii Unit Float






10432

…10468

Not used - -

10470 2 Contact operation C1 Unit Float





10480 2 Contact operation C6xii Unit Float






10492

…10528

Not used - -

10530 2 Real power step C1 VAr Float





10540 2 Real power step C6xii VAr Float





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10552

…10588

Not used - -

10590 2 Working time C1 hours Float





10600 2 Working time C6xii hours Float






10612

…10648

Not used - -

10650 2 High voltage alarm number Unit Float

10652 2 High current alarm number Unit Float

10654 2 Low voltage alarm number Unit Float

10656 2 Low current alarm number Unit Float

10658 2 THDI% alarm number Unit Float

10660 2 THDV% alarm number Unit Float

10662 2 Temperature alarm number Unit Float

10664 2 High cosfi alarm number Unit Float

10666 2 Low cosfi alarm number Unit Float

10668 2 Voltage dip alarm number Unit Float

10670 2 1° mix list value Depend Float











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10718 2 Number of fan alarmxii Unit Float



% Float



% Float

10748 2 Maximum Delta-KVAr VAr Float

10750 2 Minimum Delta-KVAr VAr Float

10752 2 Average Delta-KVAr VAr Float

10754 2 Maximum Average Delta-KVAr VAr Float

10756 2 Daily Average Delta-KVAr VAr Float

10758 2 Weekly Average Delta-KVAr VAr Float

10760 2 Monthly Delta-KVAr VAr Float

10762

…11998

Not used - -

12000 2 CT primary A Float

12002 2 CT secondary A Float

12004 2 CT phase insertion Unit Float

12006 2 Enable CT inversion Unit Float

12008 2 Enable cogeneration Unit Float

12010 2 Frequency mode xi Unit Float

12012 2 VT primary Volt Float

12014 2 VT secondary Volt Float

12016 2 Voltage phase Unit Float

12018 2 Step voltage Unit Float

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12020 2 Enable manual mode Unit Float

12022 2 Target cosfi Unit Float

12024 2 Cosfi tolerance Unit Float

12026 2 Capacitor discharge time Sec Float


time between consecutive switching

Sec Float

12030 2 Relay Output 1 function Unit Float

12032 2 Step C1 power VAr Float

12034 2 Alarm type for output 1 Unit Float










12054 2 Relay Output 5 function xi Unit Float



12060 2 Relay Output 6 function xii Unit Float

12062 2 Step C6 power xii VAr Float

12064 2 Alarm type for output 6 xii Unit Float






12076 2 Alarm type for output 8xii Unit Float








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12094 2 Alarm type for output 11xii Unit Float

12210 2 Integration time for average values Min Float

12212 2 Communication protocol Unit Float

12214 2 Serial communication address Unit Float

12216 2 Serial communication baudrate Unit Float

12218 2 High voltage alarm threshold % of VT primary Float

12220 2 High voltage alarm delay sec Float

12222 2 High current alarm threshold % of CT primary Float

12224 2 High current alarm delay sec Float

12226 2 Low voltage alarm threshold % of VT primary Float

12228 2 Low voltage alarm delay sec Float

12230 2 Low current alarm threshold (% of CT

primary) x 2

Float

12232 2 Low current alarm delay sec Float

12234 2 THDV% alarm threshold % Float

12236 2 THDV% alarm delay sec Float

12238 2 THDI% alarm threshold % Float

12240 2 THDI% alarm delay sec Float

12242 2 Temperature alarm threshold °C Float

12244 2 Temperature alarm delay sec Float

12246 2 Enable disconnection time Unit Float

12248 2 Disconnection time Unit Float

12250 2 PFC algorithm evaluation time Unit Float

12252 2 Transient exhaustion time for disinsertion Unit Float

12254 2 Transient exhaustion time for insertion Unit Float

12256 2 Enable stability control for sliding win. avg. Unit Float

12258 2 Percentage deviation for sliding win. avg. Unit Float

12260 2 Inductors presence Unit Float

12262 2 Degradation threshold 1 (without inductors) Unit Float

12264 2 Breakage threshold 1(without inductors) Unit Float

12266 2 Degradation threshold 2 (with inductors) Unit Float

12268 2 Breakage threshold 2 (with inductors) Unit Float

12270 2 Enable alarm reset Unit Float

12272 2 Enable harmonic analisys Unit Float

12274 2 Autodiagnostic threshold Unit Float

12276 2 868MHz address Unit Float

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12278 2 868MHz channel Unit Float

12280 2 868MHz power Unit Float

12282 2 Network type Unit Float

12284 2 Instrument ID Unit Float

12286 2 Serial number: week Unit Float

12288 2 Serial number: year Unit Float

12290 2 Serial number: sequential number Unit Float

12292 2 FW versione: major Unit Float

12294 2 FW versione: sub Unit Float

12296 2 Bootloader version: major Unit Float

12298 2 Bootloader version: sub Unit Float

12300 2 Log periodxii sec Float

12302 2 Fisrt measure logxii Unit Float

12304 2 Second measure logxii Unit Float

12306 2 Voltage dip duration msec Float

12308 2 Manual status C1 Unit Float





12318 2 Manual status C6 xii Unit Float






12330

…12388

Not Used - -

12390 2 Phase offset xii Deg Float

12392 2 Setpoint cosfi 2 xii thousandths Float



12398 2 Band B1xii Unit Float




12406 2 Step disconnection xii Unit Float

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12408 2 NFC xii Unit Float

12410 Not used - -

12412 Not used - -

12414 Not used - -

12416 Not used - -

12418 Not used - -

12420 2 Fan control threshold xii °C Float

12422 2 Fan control delay xii sec Float

12424 2 High cosfi alarm delay min Float

12426 2 Low cosfi alarm delay min Float

12428 2 Language xii Unit Float

12430 2 Temperature measurement unit xii Unit Float

12432 Not used - -

12434 Not used - -

12436 2 Backlight level xii Unit Float

12438 2 Automatic backlight turn-off xii Unit Float

12440 2 LCD display contrast xii Unit Float

12442 2 Summertime xii Unit Float

12444 2 Imax harmonic mA Float

12446 2 Alarm mask Unit Float

12448 2 Language version: major xii Unit Float

12450 2 Language version: sub xii Unit Float

12452 2 Max connection time hours Float

12454

…14002

Not Used - -

14004 2 Harmonic module H2 current % Float












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14122

…14202

Not Used - -

14204 2 Harmonic module H2 voltage % Float









14222 2 Harmonic module H11voltage % Float














14250 2 Harmonic module H25voltage % Float


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2.3 Function 05 : “FORCE SINGLE COIL”

Using this function it is possible to set the status of the DUCA-LCD, DUCA-LCD96, SMART96

and SMART Più outputs; the output is treated like a MODBUS coil.

The value for “Coil number” is the number of correspondent Output minus 1 (n-1), therefore for

DUCA-LCD96 and SMART Più outputs 1 or 2 are respectively 00h and 01h; for SMART 96 output

5 is 04h; only for DUCA-LCD96 485-RELE outputs 3 or 4 are respectively 02h and 03h.

The query and answer frames are described below.

Write request (master):

Addr Func Coil Num.

H

Coil Num.

L

Coil Status

H

Coil Status

L

CRC CRC

1Fh 05h 00h 04h FFh 00h CEh 45h

In the example above the master forces the output of a Smart96 (output n.5) to 1: the “force single

coil” Func = 05 is sent to the slave with address Addr = 1Fh, followed by Coil Number = 00 04h (n-1).

The Coil Status value must be one of the following:

to set the output: FF 00h

to reset the output: 00 00h

The CRC CE45h ends the frame.

Reply (slave):

Addr Func Coil Num.

H

Coil Num.

L

Coil Status

H

Coil Status

L

CRC CRC

1Fh 05h 00h 04h FFh 00h CEh 45h

If the query is correct, the query frame itself is sent back from the slave to the master, otherwise

the exception is reported in the second byte (which becomes 85h).

This function is available in the SMART 96 from version 1.01 onwards, in the SMART Più model

“2P” and in the instruments DUCA-LCD and DUCA-LCD96.

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Note: if the alarm is active, is not possible to reset the output; however the slave replies with a

confirmation frame; if the pulse option is set (or if the slave model has no outputs) the slave replies

with an exception frame.

Note: this function is not available for R5 and R8 models.

2.4 Function 06 : “PRESET SINGLE REGISTER”

This function lets the user set the Setup parameters of the instrument.

Addr. Words Parameter description Min. Max. Format

0002 1 V.T. Ratio (not available for R5 and R8) 1 500 xiv

Unsigned Int

0004 1 C.T. Ratio (not available for R5 and R8) 1 1250 xv

0006 1 Average period 1 60 Unsigned Int

0008 1 MACH reset, may be one of the following: xvi a) the value “5” resets the average and max.

powers

b) the value “10” resets average powers,

max. powers and energies

For R5 and R8 possible value are:

“5” resets max, min and avg measure;

“20” reset to factory;

“30” reset C1;

“31” reset C2;

“32” reset C3;

“33” reset C4;

“34” reset C5;

“35” reset C6;

“36” reset C7;

- - Unsigned Int

xiv 400 for MACH SMART. For DUCA-LCD and DUCA-LCD96 the maximum selectable value is 600 and the command sets in the

instrument the value of VT’s secondary voltage to 100V and the value of VT’s primary voltage to VT*100V. xv SMART Più from version V3.12. In the previous versions and for other instruments the maximum value for CT ratio was 1000. For

DUCA-LCD and DUCA-LCD96 the maximum selectable value is 2000 and the command sets in the instrument the value of CT’s

secondary current to 5A and the value of CT’s primary voltage to CT*5A. xvi The reset 15 in not available since the default setting will set the instrument into “DUCATI protocol” and so the instrument would

not be reachable any more by Modbus.

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“37” reset C8;

“38” reset C9;

“39” reset C10;

“40” reset C11;

“60” reset contact operation C1;











“90” reset ACQ;

0014 1 MACH address 1 247 Unsigned Int

0016 1 Enables (if value=0) or disables

(if value=1) the setup menuxvii

(not available for R5 and R8)

- - Unsigned Int

0018 1 Index 1st value for Mix of measure xviii


0002 0154 Unsigned Int

0020 1 Index 2nd

value for Mix of measure xviii



0022 1 Index 3rd




0024 1 Index 4th




0026 1 Index 5th




0028 1 Index 6th




0150 1 V.T. Ratio (not available for R5 and R8) 1 500 xiv

Unsigned Int

0152 1 C.T. Ratio (not available for R5 and R8) 1 1250 xv

Unsigned Int

xvii Not for DUCA47, DUCA-LCD and for DUCA-LCD96 xviii This value are available only for SMART Più. If not set or after a global reset, this measure are set to the first six measure of the

list (frequency, three-phase equivalent voltage...).

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0154 1 Average period 1 60 Unsigned Int

0156

…

0198

1 Not used - - -

Following registers are available only for R5 and R8 models

0200 1 CT primary (Ampere) 1 10000 Unsigned Int

0202 1 CT secondary(Ampere) 1 5 Unsigned Int

0204 1 CT phase insertion

0 = L1 (R);

1 = L2 (S);

2 = L3 (T) ;

0 2 Unsigned Int

0206 1 Enable CT inversion

0 = Disabled;

1 = Enabled;

0 1 Unsigned Int

0208 1 Enable cogeneration

0 = Disabled;

1 = Enabled;

0 1 Unsigned Int

0210 1 Frequency mode

0 = 50Hz;

1 = 60Hz;

2 = Auto;

0 2 Unsigned Int

0212 1 VT primary (MSW) (Volt) 50

(210

for

R5)

200000

(160000

for

R5)

Unsigned Int

0214 1 VT primary (LSW) (Volt) Unsigned Int

0216 1 VT secondary (Volt) 50(π)

525(π)

Unsigned Int

0218 1 Voltage phase

0 = L1n;

1 = L2n;

2 = L3n;

3 = L12;

4 = L23;

5 = L31;

0 5 Unsigned Int

0220 1 Step nominal voltage (Volt) 50 5000 Unsigned Int

0222 1 Enable manual mode

0 = Disabled;

1 = Enabled;

0 1 Unsigned Int

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0224 1 Target cosfi (-500;-999) e

(500;1000)

Signed Int

0226 1 Cosfi tollerance 10 100 Unsigned Int

0228 1 Capacitor discharge time (sec) 1 600 Unsigned Int


time between consecutive switching (sec)


0232 1 Relay Output 1 function

0 = Step;

1 = Always off step;

2 = Always on step;

3 = N.O. contact alarm;

4 = N.C. contact alarm; xii

5 = FAN output; xii

6 = MAN/AUTO output; xii

0 6

Unsigned Int

0234 1 Step C1 power (MSW) (VAr) 0 999000 Unsigned Int

0236 1 Step C1 power (LSW) (VAr) Unsigned Int

0238 1 Alarm type for output 1 (λ) (λ) Unsigned Int


0 = Step;


2 = Always on step;



5 = FAN output; xii


0 6

Unsigned Int





0 = Step;


2 = Always on step;



5 = FAN output; xii


0 6 Unsigned Int



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0 = Step;


2 = Always on step;



5 = FAN output; xii


0 6 Unsigned Int





0 = Step;


2 = Always on step;



5 = FAN output; xii


0 6 Unsigned Int





0 = Step;


2 = Always on step;



5 = FAN output; xii


0 6 Unsigned Int





0 = Step;


2 = Always on step;

0 6 Unsigned Int

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5 = FAN output; xii






0 = Step;


2 = Always on step;



5 = FAN output; xii


0 6 Unsigned Int





0 = Step;


2 = Always on step;



5 = FAN output; xii


0 6 Unsigned Int





0 = Step;


2 = Always on step;



5 = FAN output; xii


0 6 Unsigned Int


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0 = Step;


2 = Always on step;



5 = FAN output; xii


7 = FAN output; xii

0 7 Unsigned Int




0320

…

0470

1 Not used - - -

0472 1 Average period (min) 1 60 Unsigned Int

0474 1 Communication protocol

0 = Modbus;

1 = Ducbus;

0 1 Unsigned Int

0476 1 Serial communication address 0 247 Unsigned Int

0478 1 Serial communication baudrate

0= 9600;

1= 19200;

2= 38400;

3= 57600;

4= 115200;

0 4

Unsigned Int

0480 1 High voltage alarm threshold (% of VT

primary)

90 110

(111=

disabled)

Unsigned Int

0482 1 High voltage alarm delay (sec) 1 255 Unsigned Int

0484 1 High current alarm threshold (% of CT

primary)

90 120

(121=

disabled)

Unsigned Int

0486 1 High current alarm delay (sec) 1 255 Unsigned Int

0488 1 Low voltage alarm threshold (% of VT

primary)

90 110

(111=

Unsigned Int

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disabled)

0490 1 Low voltage alarm delay (sec) 1 255 Unsigned Int

0492 1 Low current alarm threshold

(1 = 0,5 %)

1 21 Unsigned Int

0494 1 Low current alarm delay (sec) 1 255 Unsigned Int

0496 1 THDV% alarm threshold (%) 0 100

(999 =

disabled)

Unsigned Int

0498 1 THDV% alarm delay (sec) 1 255 Unsigned Int

0500 1 THDI% alarm threshold (%) 0 100

(999 =

disabled)

Unsigned Int

0502 1 THDI% alarm delay (sec) 1 255 Unsigned Int

0504 1 Temperature alarm threshold (Celsius

degrees)

0 80

(999 =

disabled)

Unsigned Int

0506 1 Temperature alarm delay (sec) 1 255 Unsigned Int

0508 1 Enable disconnection time

0 = Disabled;

1 = Enabled;

0 1 Unsigned Int

0510 1 Disconnection time (sec) 1 30000 Unsigned Int

0512 1 PFC algorithm evaluation time 10 1500 Unsigned Int

0514 1 Transient exhaustion time for disinsertion 5 250 Unsigned Int

0516 1 Transient exhaustion time for insertion 5 250 Unsigned Int

0518 1 Enable stability control for sliding win. avg.

0 = Disabled;

1 = Enabled;

0 1 Unsigned Int

0520 1 Percentage deviation for sliding win. avg. 1 50 Unsigned Int

0522 1 Inductors presence

0= Not present;

1 = Present;

0 1 Unsigned Int

0524 1 Degradation threshold 1 (without inductors)

1= 5% of degradation;






1 20 Unsigned Int

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0526 1 Breakage threshold 1(without inductors)

(see Degradation threshold 1 for the value

meaning)

1 20 Unsigned Int

0528 1 Degradation threshold 2 (with inductors)


meaning)

1 20 Unsigned Int

0530 1 Breakage threshold 2 (with inductors)


meaning)

1 20 Unsigned Int

0532 1 Enable alarm reset

0 = Disabled;

1 = Enabled;

0 1 Unsigned Int

0534 1 Enable harmonic analisys

0= RMS visualization;

1= DFT visualization;

0 1 Unsigned Int

0536 1 Autodiagnostic threshold 0 200 Unsigned Int

0538 1 868MHz address 1 247 Unsigned Int

0540 1 868MHz channel 0 10 Unsigned Int

0542 1 Log periodxii 1 999 Unsigned Int

0544 1 Fisrt measure log addressxii

(must be a valid address of the Read

Holding Register map)

- - Unsigned Int

0546 1 Fisrt measure log addressxii

(must be a valid address of the Read

- - Unsigned Int

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Holding Register map)

0548 1 1° mix list value address (ξ)

(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int


(ξ)

Unsigned Int

0596 1 Network type

0= Three-phase;

1 = Single-phase;

0 1 Unsigned Int

0598 1 Voltage dip duration 5 40 Unsigned Int

0600 1 Manual status C1

0= Off;

1= On;

0 1 Unsigned Int


0= Off;

1= On;

0 1 Unsigned Int


0= Off;

0 1 Unsigned Int

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1= On;


0= Off;

1= On;

0 1 Unsigned Int


0= Off;

1= On;

0 1 Unsigned Int

0610 1 Manual status C6 xii

0= Off;

1= On;

0 1 Unsigned Int


0= Off;

1= On;

0 1 Unsigned Int


0= Off;

1= On;

0 1 Unsigned Int


0= Off;

1= On;

0 1 Unsigned Int


0= Off;

1= On;

0 1 Unsigned Int


0= Off;

1= On;

0 1 Unsigned Int

0622

…

0640

1 Not used - - Unsigned Int

0642 1 Fan control threshold xii 0 80

(999 =

disabled)

Unsigned Int

0644 1 Fan control delay (sec) xii 1 255 Unsigned Int

0646 1 High cosfi alarm delay (min) 1 255 Unsigned Int

0648 1 Low cosfi alarm delay (min) 1 255 Unsigned Int

0650 1 Phase offset xii -180 180 Signed Int

0652 1 Target cosfi 2 xii (-500;-999) e

(500;1000)

Signed Int

0654 1 Target cosfi 3 xii (-500;-999) e Signed Int

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(500;1000)

0656 1 Target cosfi 4 xii (-500;-999) e

(500;1000)

Signed Int

0658 1 Band B1xii (μ)

Unsigned Int


Unsigned Int


Unsigned Int


Unsigned Int

0666 1 Step disconnection xii

0 = Disabled;

1 = Enabled;

0 1 Unsigned Int

0668 1 Not used - - -

0670 1 Not used - - -

0672 1 Not used - - -

0674 1 Not used - - -

0676 1 Not used - - -

0678 1 Not used - - -

0680 1 Language xii

0 = INGLESE;

1 = ITALIANO;

2 = FRANCESE;

3 = SPAGNOLO;

4 = TEDESCO;

5 = PORTOGHESE;

6 = RUSSO;

7 = ARABO;

8 = CINESE;

0 8 Unsigned Int

0682 1 Temperature measurement unit xii

0= Celsius;

1 = Fahrenheit

0 1 Unsigned Int

0684 1 Not used - - -

0686 1 Not used - - -

0688 1 Not used - - -

0690 1 Backlight xii

0 = Off;

2= Max level;

0 or 2 Unsigned Int

0692 1 Automatic backlight turn-off xii

0 = Disabled;

1 = Enabled;

0 1 Unsigned Int

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0694 1 LCD display contrast xii 0 10 Unsigned Int

0696 1 Summertime xii

0 = Standard time;

1= Daylight saving time

0 1 Unsigned Int

0698 1 THDI invalid threshold 35 5000 Unsigned Int

0700 1 Alarm mask 0 3 Unsigned Int

0702 1 Max connection time 0 999 Unsigned Int

Please note that the write addresses 150, 152 and 154 are just a copy of the addresses 2, 4, 6 in

this order, and that there is no difference between the “low” address and “high” address. The high

addresses are available for SMART96 version 1.0 onwards, Mach SMART version 1.11 onwards,

SMART Più, DUCA47, DUCA-LCD and DUCA-LCD96.

In SMART(96)Più a variable table of up to 6 measures can be can be configured. So with one

reading the instruments sends the six measures of a pre-set Mix of value (index 18 - 28).

Frame format:

Addr Func

06

Register

H

Register

L

DATA

H

DATA

L

CRC CRC

Example 1:

Addr Func

Register

H

Register

L

DATA

H

DATA

L

CRC CRC

1Fh 06h 00h 11h 00h 6Ah 5Ah 5Eh

In the last example the first index(0018) of Mix is set to three-phase active energy (0106).

Notes:

The index must be the real index minus 1 (0018-1 = 0017), while the value of the measure's

index must be the actual one (0106).

Example 2:

Addr Func

Register

H

Register

L

DATA

H

DATA

L

CRC CRC

1Fh 06h 00h 0Fh 00h 01h 7Bh B7h

In the example the instrument at address 31 receive a keyboard lock (data = 0001) by function 06 at

address 0016 (minus 1 = 0015).

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For R5 and R8:

(π) VT secondary max e min for R5 has to possible range (210;250) and (370; 430);

(ξ) The list value address must be an address available in the memory map for the READ HOLDING

REGISTER (see par. 2.2);

(μ) The B1, B2, B3 and B4 bands value must be specified using this formula:

Bn_value = hour * 256 + minute

The bands B2, B3, B4 can be disabled using: hour = 99 and minute = 99. Moreover, the values of B1,

B2, B3 and B4 must be monotonically increasing.

(λ) For R8 :

0 = High voltage:

1 = High current;

2 = Low voltage;

3 = Low current;

4 = High THDV%;

5 = High THDI%;

6 = High temperature;

7 = Not used

8 = High Cosfi ;

9 = Low Cosfi;

10 = Generic.

For R5:

0 = High voltage;

1 = High current;

2 = Low volatge;

3 = Low current;

4 = High THDV%;

5 = High THDI%;

6 = High temperature;

7 = High Cosfi;

8 = Low Cosfi;

9 = Generic;

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2.5 Function 07 : “READ EXCEPTION STATUS”

This function makes it possible to read the status of the instrument (not available for R5 and R8).

It gives a byte in which each bit (when equal to 1) has the following meaning:

Bit Meaning

0 Indicates that the instrument has undergone at least one HW Reset since the

last reading of that register

1 Not used

2 Not used

3 Not used

4 Not used

5 Not used

6 Not used

7 Indicates that the instrument has the Setup menu active

2.6 Function 17 : “REPORT SLAVE ID”

This function makes it possible to read the instrument identifier.

Read request (master): Addr Func CRC CRC

02h 11h C0h DCh

In this example the id request is sent using Func = 11h to the slave with address Addr = 02h, the

CRC C0DCh ends the frame.

For Mach SMART / SMART Più / DUCA47-72-SP / DUCA-LCD / DUCA-LCD96:

Reply (slave) – case 1:

Addr Func Len Inst. type /// /// Fw rel. CRC CRC

02h 11h 04h 09h FFh 00h C8h F8h 7Bh

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The answer contains address and function, the number of data bytes Len = 04h, the analyser

description Inst. type = 09h, and the firmware version Fw rel. = C8h (200): this value must be divided

by 100 (V2.00). CRC F87Bh ends the frame.

For version 2.56 onwards the field Fw rel. is filled with 00 and the two fields that were previously

unused, are filled with the hex value of release:

Reply (slave) – case 2:

Addr Func Len Inst. type Fw rel. H Fw rel. L /// CRC CRC

02h 11h 04h 15h 01h 2Ch 00h h h

In the example:

Fw rel. 012Ch = V 3.00

For R5 and R8:

Reply (slave):

Addr Func Len Inst. Type

(MSB)

Inst. Type

(LSB)

Fw rel.

(MSB)

Fw rel.

(LSB)

CRC CRC

02h 11h 04h 01h 55h 00h 33h 9Bh B8h

The answer contains address and function, the number of data bytes Len = 04h, the analyser

description Inst. type = 0155h, and the firmware version Fw rel. = 0033h (51): this value must be

divided by 100 (V0.51). CRC 9BB8h ends the frame.

NOTE: DUCA47 with serial interface and pulse outputs (Identifier = 80), DUCA-LCD and

DUCA-LCD96 answer always like case 2, even if the Firmware Release is lower than 2.55.

Identifier Analyser and PFC controller model

09 MachSMART three-phase (5A)

10 MachSMART three-phase (50A)

11 MachSMART Dark three-phase (5A)

12 MachSMART Dark three-phase (50A)

13 MachSMART single phase (5A)

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14 MachSMART single phase (50A)

15 SMART 96

16 MachSMART Dark single phase (230/240Vac - 5A)

20 SMART Più 5A

21 SMART Più 5A with 2 output as pulse or alarms (models 2P)

22 SMART Più 5A (KVAh) xix

23 SMART Più 5A (KVAh) xix with 2 output as pulse or alarms (models 2P)

25 SMART 96 Più 5A

26 SMART 96 Più 5A with 2 output as pulse or alarms (models 2P)

27 SMART 96 Più 5A (KVAh) xix

28 SMART 96 Più 5A (KVAh) xix with 2 output as pulse or alarms (models 2P)

29 SMART Più 1A


31 SMART Più 50A


33 SMART96 Più 1A

34 SMART96 Più 1A with 2 output as pulse or alarms (models 2P)

35 SMART96 Più 50A

36 SMART96 Più 50A with 2 output as pulse or alarms (models 2P)

55 DUCA-LCD96 BASE-485

57 DUCA-LCD96 485

58 DUCA-LCD96 485-RELE

59 DUCA-LCD96 485-IO

60 SMART Più 1A KVAhxix

61 SMART Più 1A KVAhxix with 2 output as pulse or alarms (models 2P)

xix You will obtain this ID from SMART Più and SMART 96 Più, Ver 3.11 or later, if you set CFG parameter to value 28, 33 or 38.

See the instrument’s manuals for more information.

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62 SMART Più 50A KVAhxix

63 SMART Più 50A KVAhxix with 2 output as pulse or alarms (models 2P)

64 SMART96 Più 1A KVAhxix

65 SMART96 Più 1A KVAhxix with 2 output as pulse or alarms (models 2P)

66 SMART96 Più 50A KVAhxix

67 SMART96 Più 50A KVAhxix with 2 output as pulse or alarms (models 2P)

76 DUCA-LCD 485

77 DUCA-LCD 485-ETH

80 DUCA47 with Serial line and pulse outputs

101 R5 485

141 R8 485

145 R8 485 USB

146 R8 485 BT

301 R5 485 RADIO

341 R8 485 RADIO

345 R8 485 USB RADIO

346 R8 485 BT RADIO

3. Exceptions on the Bus

Below is a table of the exceptions handled for errors regarding access to the bus.

Exception Description

01 ILLEGAL FUNCTION An unsupported function code has been sent

02 ILLEGAL DATA ADDRESS Illegal address

03 ILLEGAL DATA VALUE A setup datum is outside of the acceptable limits

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4. CRC algorithm

The CRC used in MODBUS follows the standard CRC-16 defined by CCITT. Many algorithms

are ready off-the-shelf, below one is reported, written in C, which uses a look-up table.

/* CRC-16 (reverse) table lookup for Modbus CRC-16

* Project: Modbus

* Author: Lynn August Linse, based on method used by XMODEM

* 16Feb94 LAL Create from book about XMODEM

*/

word crc16_rev_table[256] =

{ 0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,

0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,

0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,

0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,

0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,

0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,

0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,

0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,

0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,

0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,

0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,

0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,

0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,

0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,

0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,

0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,

0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,

0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,

0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,

0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,

0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,

0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,

0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,

0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,

0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,

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0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,

0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,

0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,

0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,

0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,

0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,

0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040};

unsigned fast_crc16( unsigned char *ucpBuf, int nSize){

register word x;

register word crc;

int i;

crc = 0xFFFF; /* start with all 1's for a reverse CRC */

for( i = 0; i < nSize; ++i) {

/* process each character in the message - 2 steps per char only! */

x = crc ^ ucpBuf[i];

crc = (crc >> 8) ^ crc16_rev_table[x & 0x00FF];

}

return( crc);

}

general specific modbus rtu protocol rev. 15 · 2018-03-22 · modbus_15_eng.doc revision: 15 of...

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