3.4 LonWorks (FPC-N35): Wiring Field Port to LonWorks Network
• Connect ProtoNode to the field network with the LonWorks terminal using a twisted
pair non-shielded cable. LonWorks has no polarity.
Figure 3-7: LonWorks Terminal
3.5 ACS/BMS II Wiring Connections to ProtoNode FPC-N34 and FPC-
N35
• When an ACS, BMS OR BMS II is being used, an RS-485-to-RS-232 converter will be
required to connect it to the ProtoNode’s RS485 port (6-pin Phoenix connector).
• Refer to Figures 3-8 and 3-9 to locate the internal RS-232 connector JP12 (BMS) or JP5
(BMS II/ACS) inside the wiring area of the ACS/BMS II.
• If the AERCO RS232-to-RS485 Converter (part no. 124943) is used, the RS-232 side of the
converter contains a connector that plugs directly into header connector JP12 (BMS) or JP5
(BMS II/ACS).
• If a third party converter is used, connect the RS-232 Receive (RxD) and Transmit (TxD)
wire leads to the internal RS-232 connector (JP12 or JP5) as shown in Figures 2-5 and 2-6.
DO NOT connect the wire shield on this side of the converter.
NOTE:
If a third-party RS232-to-RS485 Converter is used, consult the manufacturer’s instruction
manual for signal polarity.
• On the RS-485 side of the converter (Figure 3-8 and 3-9), connect the wire leads as follows:
o Connect the TD B (+) terminal to the ProtoNode’s RS485+ Port.
o Connect the TD A (-) terminal to the ProtoNode’s RS485- Port.
o Connect the GND terminal to the ProtoNode’s RS485 Frame GND Port.
o Place the ProtoNode’s termination jumper in the ON position.
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