Introducing the bm85 bridge/multiplexers – Schneider Electric Modbus Plus Network Bridge Multiplexer none User Manual

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Introducing the BM85 Bridge/Multiplexers

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BM85

BRIDGE

MULTIPLEXER

MASTER

SLAVE

100

NETWORK

SLAVE

NETWORK

SLAVE

CONTROLLER

150

200

NETWORK

SLAVE

NETWORK

SLAVE

NETWORK

MASTER

MODBUS PLUS

NOTE 4

NOTE 1

NOTE 2

NOTE 3

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.