PROGRAMMABLE

CONTROLLER

TO

OTHER

NODES

BM85

BRIDGE

MULTIPLEXER

RS232 OR RS485

SERIAL DEVICES

MODBUS PLUS NETWORK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROGRAMMABLE

 

 

 

 

 

BP85

 

 

 

 

 

 

 

 

 

CONTROLLER

 

 

 

 

 

BRIDGE

 

 

 

 

 

 

 

 

 

 

PLUS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MODBUS PLUS NETWORK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOST DEVICE

 

 

 

 

 

 

BM85

 

 

 

 

 

 

 

 

 

 

NETWORK

 

 

 

 

 

BRIDGE

 

 

ADAPTER

 

 

 

MULTIPLEXER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOST

COMPUTER

MODBUS MASTER, SLAVE,

OR NETWORKED DEVICES

890 USE 103 00

Figure 1 BM85 Bridge/Multiplexers on Modbus Plus

Depending on the BM85 model and the types of devices connected at its ports￿ serial port devices can communicate with:

VDevices at the same serial port

VDevices at other serial ports on the same BM85

VNode devices on the Modbus Plus network

VDevices at serial ports on other BM85s across Modbus Plus.

Introducing the BM85 Bridge/Multiplexers

3

Page 13
Image 13
Schneider Electric manual BM85 Bridge/Multiplexers on Modbus Plus