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Home > Tech Notes > B&B Converters to the Industrial Bus World > Modbus

B&B Product Compatibility with Industrial Buss
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Reference:

 B&B part number 485OP

Subject:

 Modbus Compatibility

The model 485OP is compatible with Modbus, with the following restrictions:

  1. The 485OP must be connected to the Modbus port 2
  2. Modbus port 2 must be configured as an RS-485 port.
    (the default protocol for Modbus port 2 is RS-232)

The model 485OP will work with 2 and 4 wire systems.

modbusph1.GIF (9896 bytes)

modbusph2.GIF (7352 bytes)
Pin Function
1 RXD-
2 RXD+
3 TXD+
4  
5 Signal common
6 TXD-
7  
8 Shield
Pin Function
1 TXD+
2 RXD+
3 Signal common
4  
5  
6 TXD-
7 RXD-

Master Communication Cable

Interconnect Cables
mastercomm.gif (1915 bytes) interconnect.gif (1744 bytes)

 

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