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Wireless Profibus via GPRS
Schildknecht AGwww.schildknecht.info
(Vorstand Dipl.Ing. Thomas Schildknecht)
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Profibus market growing
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wireless profibus in steal industry Schildknecht AG 3
Forcast Profibus market growing
SPS Magazin 4/2009Profibus growing 2008 -201225 Mio to 50 Mio
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Koexistenzlanung
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Device combinations Dataeagle 2000 family
SIEMENS S7
SIEMENS S5 E/A DATASNAKE TBOX SIEMENS S7
2,4 GHz (WLAN/Bluetooth/Zigbee) 5,8GHZ 1,9 GHz 448/459 MHz 868MHz GPRS/GSM
DATAEAGLE ALS BEDIENGERÄT
Profibus, MPI, 3964R, Ethernet, MODBUS, L1
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SIEMENS S7
SIEMENS S7
ProfibusInternet
Mobilphone GPRS
Profibus
Ethernet
GPRS
DSL:
Fix IP adress or dyndns option
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Device combinations
SIEMENS S7
Profibus/MPI
Internet
Mobilphone GPRS
GPRSMobilphone GPRS
GPRS
Profibus/ MPI
Service ProviderWhite /MDEX
SIEMENS S7
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Gateway Profibus/GPRS
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Radiomodem as profibus DP slave
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Wireless QoS classification ISA-100
•class 0 Emergency action always critical
•class 1 Closed loop regulatory control often critical
•class 2 Closed loop supervisory control usually non-critical
•class 3 open loop control human in the loop
•class 4 Alerting / Visualisation e.g. event-based maintance
•class 5 Logging, Up- Download historic data collection
Application Description
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What is the difference between teleservice and closed control loops in GPRS world?
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Remote maintenanceCyclic data communication
M2M tarif from T-Mobile
Source: Insys GmbH
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Calculation with normal M2M tarif
100 Byte / 10 sec = 260MB /month
230MB * 3.- € = 690.- €/Month = 8280.- €/year
260MB ./. 30 MB free = 230MB
This is best case calculation!
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New tarif from T-Mobil (12/2008)
5GB Flatrate 40.- Euro / month
No Voice over IP
Over 5GB: limitation of up/download speed
No fix IP adress possible: additional mdex option for Fix IP
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Results
GPRS is excelent for teleservice, up –and download, alerting
From all availible mobilphone proposals only one special tarif is availible with a flatrate from 5GB
use as communication way between PLC´s you can´t use typical mobile phone providers and systems
Keep in mind: “No Wires” doesn´t mean “no Problems!”You have to know what you do!
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Thanks for listening
More Information:
www.schildknecht.info