Schneider Electric none manual BM85 With Typical Modbus Devices

NOTE 1

MASTER

MODBUS PLUS

BM85

BRIDGE

MULTIPLEXER

1 2 3 4

CONTROLLER

NOTE 2

NOTE 3

SLAVE

NETWORK

SLAVE 50

NETWORK

SLAVE 100

NETWORK

MASTER

NETWORK
SLAVE	NOTE 4
150
NETWORK
SLAVE
200

Figure 3 BM85 With Typical Modbus Devices

Figure 3 summarizes the typical layout of devices at the Modbus ports.

Notes

1.This is an example of a single Modbus master device. The device can access devices on other ports at the same BM85￿ as well as devices across Modbus Plus.

2.This is an example of a single Modbus slave device. The device is accessible from devices on other ports at the same BM85￿ as well as from devices across Modbus Plus.

3.This is an example of a Modbus network with multiple slave devices. Any device on the port is accessible from devices on other ports at the same BM85￿ and from devices across Modbus Plus.

4.This is an example of a Modbus network with one master device and one or more slave devices. The master device can access devices on the same port￿ on other ports at the same BM85￿ and devices across Modbus Plus. The slave devices are accessible only to the Master on the same port.

31007492 Introducing the BM85 Bridge/Multiplexers 11