Memory Types Supported by Modbus TCP Slave

The Modbus TCP Slave Communications option emulates the Modbus memory types based on Modicon programmable controllers.

The Modbus TCP Communications option supports writes to the following memory types:

Memory Type

Reference Class

Description

Coils

0X

Discrete Outputs

Holding Registers

4X

Analog Outputs

The Modbus TCP Slave Communications option supports reads from the following memory types:

Memory Type

Reference Class

Description

Coils

0X

Discrete Outputs

Inputs

1X

Discrete Inputs

Input Registers

3X

Analog Inputs

Holding Registers

4X

Analog Outputs

More information

Modbus/TCP Slave protocol.