
6 Communication Wiring
After you install the various components of the ENV climate control system, you must set up the
communication wiring so the components can communicate with the PC.
To connect communication wiring:
1. Connect the VLinx converter to the network through a router or hub using a standard network
cable.
2. Connect the VLinx serial server to the RS485 terminals on the I/O module using a 24 AWG to
18AWG twisted pair copper wire (you can also use raw Cat-5 cable) or you can purchase a 9Pin
female cable from Radio Shack and cut off one end to expose the wires and trace them back to
pins 3-5 as follows: Pin 3 is plus and pin 4 is minus and pin 5 is ground.
3. Connect the computer to the network through a router or hub using a standard network cable.
Installation Guide Page 12 of 20 Copyright 2008
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