Bacnet Ms/Tp Or Metasys N2 (Fpc-N34): Wiring Field Port To Rs-485 Bms Network; Lonworks (Fpc-N35): Wiring Field Port To Lonworks Network; Figure 14: Connection From Protonode To Rs-485 Field Network; Figure 15: Rs-485 Bms Network Eol Switch - SMC Networks ProtoNode FPC-N34 Manual

3.3 BACnet MS/TP or Metasys N2 (FPC-N34): Wiring Field Port to RS-485 BMS
Network
•
Connect the BACnet MS/TP or Metasys N2 RS-485 network wires to the 3-pin RS-485 connector
on ProtoNode FPC-N34.
o
The RS-485 GND (Pin 3) is not typically connected
•
See Section 5 for information on connecting to BACnet/IP network.
•
If the ProtoNode is the last device on the BACnet MS/TP or Metasys N2 trunk, then the
End-Of-Line Termination Switch needs to be enabled.
o
The default setting from the factory is OFF (switch position = right side)
o
To enable the EOL Termination, turn the EOL switch ON (switch position = left
BMS RS-
485 Wiring
RS-485 +
RS-485 -
-
side)

3.4 LonWorks (FPC-N35): Wiring Field Port to LonWorks Network

•
Connect ProtoNode to the field network with the LonWorks terminal using approved cable per the
FT-10 installation guidelines. LonWorks has no polarity.
(Figure 14)
ProtoNode
Pin
Pin # Assignment
Pin 1 RS-485 +
Pin 2 RS-485 -
Pin 3 RS-485 GND

Figure 14: Connection from ProtoNode to RS-485 Field Network

Figure 15: RS-485 BMS Network EOL Switch

Figure 16: LonWorks Terminal

Page 19 of 50
ProtoNode Startup Guide
(Figure 15)
-
G
End-of-Line Switch