BM85 Modbus Plus Network Bridge Multiplexer User's Guide

Compatible Devices and Cables
31007492
87
A.3 Modbus/RS232 Ports Pinout
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Part Number
Mounting
Method
Operating
Power
(Nominal)
Modbus Plus
Network
Cable
Serial
Ports
Serial
Protocol
NW–BM85–000 Panel or Shelf 115/230 Vac Single Modbus ASCII or RTU
NW–BM85C002 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual Modbus ASCII or RTU
NW–BM85D008 19 in Rack 125 Vdc or
24 Vdc
Single or Dual Modbus ASCII or RTU
NW–BM85E232 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
NW–BM85D002 19 in Rack 125 Vdc or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
NW–BM85S232 Panel or Shelf 115/230 Vac or
24 Vdc
Single or Dual RS232 Programmable,
User Defined
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54321
9876
REAR PANEL
SERIAL PORT
CONNECTORS
Figure 26 Serial Ports Pinout – Modbus/RS232
Pin BM85 Direction
Purpose
1 –– Chassis ground
2 In Receive data
3 Out Transmit data
4 Out Data Terminal Ready
5 –– Signal ground
6 In Data Set Ready
7 Out Request To Send
8 In Clear To Send
9 –– not used