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Configuring the Modbus Models
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3.4.2 Port Type
Master
A port to which a single Modbus master device such as an IBM PC or
Modicon P230 Programmer is to be connected. In Figure 9, port 1 is an
example.
Slave
A port to which a single Modbus slave device such as a programmable
controller is to be connected. In Figure 9, port 2 is an example.
Network
A port to which multiple Modbus slave devices are to be connected.
In Figure 9, port 3 is an example.
Silent Master Network
A port to which one Modbus master device and one or more slave devices
are to be connected. In Figure 9, port 4 is an example.
BM85
BRIDGE
MULTIPLEXER
1234
MASTER
SLAVE
NETWORK
SLAVE
NETWORK
SLAVE
984–785
CONTROLLER
NETWORK
SLAVE
NETWORK
SLAVE
MASTER
MODBUS PLUS
NETWORK
Figure 9 BM85 Modbus Port Types