The Alec IoT Gateway model: GW-E01 box contains the GW-E01 module, a 5V, 1A power supply and a power supply cable, as well as a 6-ft long CAT-5 Ethernet patch cord for connecting the gateway to the Local Area Network.

The GW-E01 module is housed inside an industrial grade NEMA4/IP66, UL508-approved plastic enclosure and has a smoke color polycarbonate lid. The lid is not screwed on when shipped and a packet of screws are included inside the box so that the user may screw on the lid after wiring.

A cable grip is provided that allows external wiring into various wiring points on the GW-E01 main circuit board as described in the following sections.

5V DCPower Input

Cable Grip

Figure 2

Red LEDALERTIndicator

DIP Switch

Fasten box to the wallusing 4 screws via these holes

Isolated RS485 port

EthernetPort

MAC ID

BacklitLCD Display

Unpacking Alec GW-E01

TM Alec GW-E01 INSTALLATION GUIDE

Alec IoT GatewayGW-E01 5V Power

SupplyCable 5V 1A

PowerSupply(UL/CSA)

6-ft Ethernetpatch cord(UL-CMG)

Wiring Alec GW-E01

Figure 1

RS485 Terminal Block

+5V Power Supply Input Terminal Block

Blu

e: S

G

White

/ora

nge - D

+

Figure 3

+5V

0V

3) At the lower right end of the GW-E01 main board, there is a 2-position screw terminal block marked with "+5V" and "0V". Remove the terminal block from its two-pin header by grabbing it and pulling it up vertically. Then, connect the red wire of the power supply cable to the "+5V" terminal, and the black wire to the "0V" terminal. Tighten the screw using a small screw driver and then insert the terminal block back onto the header pins as shown in Figure 3.

After all 3 sets of wiring has been completed, tighten the cable grip by rotating the knob clockwise until all the cables are tightly gripped. This should provide good protection for regular usage in commercial and industrial environment. However, note that the cable grip entrance into the enclosure is not fully waterproof, unless special sealing rubber or sealing compound is applied to seal up any air gaps between the cables.

1. Since both ZC001 and GW-E01 employ isolated, Fail-safe class of RS485 drivers, the RS485 bus does not require biasing resistors for stable operation.

2. The RS485 standard specifies impedance-matching termination at both ends of the daisy-chain RS485 network. Unfortunately, termination also increases the current consumption of the RS485 driver. Since the Alec RS485 network operates at a relatively slow speed of 38400bps, our calculations show that it is possible to operate well at up to 300m (1000 ft) without connecting terminating resistors.

However, if the RS485 cable-run between the first and the last device in the network exceeds 300m (1000 ft), then you should add a 120 ohm resistor across the D+ and D- terminal at the last two 'corners' of the bus. This will allow the total cable-run to extend up to 1200m (4000 ft).

RS485 Wiring Notes: Termination and Biasing

Zone1 ZoneN

RS485 Twisted Pair

Gateway Zone2

D+ D- D+ D- D+ D- D+ D-

SG SG SG SG

Alec GW-E01 requires both an Ethernet connection and power to operate. So it should be installed at a location where it is close to an Ethernet point and a power outlet. The RS485 network that links all the ZC001 obviously also needs to be brought to the location where you want to install the GW-E01.

Note that electrically speaking, the GW-E01 is a node just like any of the ZC001 nodes that are connected to the multi-drop RS485 network. Therefore the GW-E01 can be installed anywhere along the RS485 daisy-chained bus and DOES NOT need to be positioned only at either end of the RS485 network.

Select The Installation Location For Alec GW-E01

First, remove the lid of the GW-E01 box to see the various wiring points on a GW-E01. Turn the knob on the cable grip counter-clockwise to loosen the gripping rubber and then insert 3 sets of cables into the housing to connect to the following wiring points:

1) At the center is the Ethernet RJ45 connector. Due to the size of the RJ45 plug this should be the first connector threaded through the cable grip.

2) To the left of the Ethernet connector is a 3-position detachable screw terminals with the markings of "D+, D- and SG". This is an isolated RS485 port where D+ and D- connect to the multi-drop RS485 signals and SG is the "signal ground" that provides a common reference ground for all the connected Alec-ZC001.

To connect wires to the screw terminals, first grab the body of the terminal block and pull it up vertically. Once it has been detached from the terminal holder, insert the 3 x RS485 wires to the terminal as shown in Figure 3 and then tighten the fastening screw using a small screw driver.

After the wiring of the GW-E01 is completed, you may plug the power supply module to the power outlet to turn on power to the GW-E01. If properly wired, the LCD display should light up. By default, the GW-E01 is configured to request for an IP address from the network DHCP server. GW-E01 will wait up to 10 seconds for the IP address from the DHCP server. The IP address will be displayed on the 2 lines x 20 characters LCD display as shown in Figure 2. You will need this IP address to access and setup the GW-E01 using the "Alec Commander Pro" software.

If GW-E01 fails to receive the IP address from the LAN after 10 seconds, it will display "IP = 0.0.0.0". You will need to check if the Ethernet point it connects to is a working network point. If so, power cycle the GW-01 and try again.

Once you have obtained the IP address, you should request the DHCP server to reserve the IP address for this device's MACID (which is shown on the Ethernet connector on the GW-E10). Alternatively, you can also use the Alec Commander Pro software to set a static IP address for GW-E01, so that every time it will start up to the same IP address.

For more details, please refer to the GW-E01 online installation guide at

http://alec.triplc.com/igs/GW-E01-English/

(Or scan the QR code to view on your phone)

TMUsing Alec GW-E01

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SG

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