23
Field Wiring
Figure 18 Networking with RS-485
4.6
Circuit Board LEDs
•
PWR: Is red when the unit is powered
•
TX and RX: Flash green to indicate communication through ports COM1 and COM2
Figure 19 LEDs
First controller
on network
Last controller
on network
Second
controller on
network
Connect shield to
chassis ground on
one metal enclosure
only
PWR
TX
RX