AERCO ProtoNode Gateway Rev 3 (with external LEDs) - Manual (Page 23)

AERCO ProtoNode Gateway
User Manual
OMM-0080_0H AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 23 of 126
GF-129 Ph.: 800-526-0288 11/06/2014
CHAPTER 4:
4.1 Wiring ProtoNode RER to RS-485 Field Protocol (BACnet MS/TP
or Metasys N2)
Connect BAS BACnet MS/TP or Metasys N2 RS-485 port to the 3-pin RS-485 connector on
ProtoNode RER as shown below.
Figure 4-1: Connection from ProtoNode to RS-485 Field Protocol
– BACnet MS/TP
NOTE
See Section 5 for information on connecting ProtoNode RER to
BACnet/IP network.
If the ProtoNode is the last device on the BACnet MS/TP or Metasys N2 trunk or if
using an RS232 to RS485 converter, then the End-Of-Line Terminator may need to
be enabled (See Figure 4-2). It is disabled by default.
Figure 4-2: RS-485 EOL Switch
TABLE 4-1: RER 3-Pin Connector Wiring
Pin # BAS RS-485 Function
Pin 1 RS-485 + RS-485 +
Pin 2 RS-485 - RS-485 -
Pin 3 - RS-485 GND
End of Line
Termination
Switch
(Move switch left to
terminate)