AERCO XPC GATEWAY Communications - Manual (Page 77)

GF-122 AERCO XPC GATEWAY
77
3. Comm selector DIP Switches 1 - 8 are all OFF.
4. Port 1a is the only port that speaks BACnet over ARC156. Connect the communications wiring to Port
1a in the screw terminals labeled Net +, Net -, and Gnd. See the illustration below.
NOTE
USE THE SAME POLARITY THROUGHOUT THE NETWORK SEGMENT.
Wire specifications
:
• 22 AWG, low-capacitance, twisted, stranded, shielded copper wire
• 2000 feet (609.60 meters) before needing a Repeater.
• If the XPC is at either end of a network segment, connect a BT485 to the XPC.
5. Turn on the XPC's power.
6. Set the correct network number to the unique BACnet ARC156 network at the site.