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Gf-122 aerco xpc gateway – AERCO XPC GATEWAY Communications User Manual

Page 79

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GF-122 AERCO XPC GATEWAY

79

The following example shows the DIP Switches set for 38.4k, Port 1, and MS/TP (m).

NOTE

MS/TP (M) IS RECOMMENDED.

4. Connect the communications wiring to Port 1a. Connect to Net+, Net-, and Gnd.

Wire specifications

• A dedicated 22 AWG to 18 AWG twisted pair wire (EIA 485)
• 2000 feet (610 meters) for 76.8 kbps
• Devices should be daisy chained and not star wired.
• If the XPC is at either end of a network segment, connect a BT485 to the XPC.

NOTE

USE THE SAME POLARITY THROUGHOUT THE NETWORK SEGMENT.

5. Turn on the power for the XPC by connecting power terminals .

6. Set the correct network number to the unique BACnet MS/TP network at the site.