Ethernet Slave Connection

A processor has a maximum of 10
Modbus
slaves using an Ethernet connection. A controller with three processor modules supports up to 30
Modbus
slaves using Ethernet ports.
Ethernet Port
The Ethernet ports used for
Modbus®
communications. Possible value is one of these slices: E1-1 and E1-2, E2-1, and E2-2, or E3-1 and E3-2.
Name
Name of the
Modbus
slave.
Protocol
When using an Ethernet connection, the controller supports
Modbus
RTU and TCP; the default value is RTU.
ID
Ethernet connections require a port. The Slave ID is 255.
Port
Possible values range from 1 to 65535. For the RTU protocol, the default value is 2000. For the TCP protocol, the default value is 502. Make sure the Port field matches the port expected by the
Modbus
master.
Modbus
slaves having the same
Modbus
master must use unique port numbers.
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