Anybus® Communicator - EtherNet/IP to Modbus RTU/Serial

How the Data Exchange Works

Figure 10. The Communicator internal memory areas
The Communicator internal memory areas


The data exchanged between the Communicator and the serial subnetwork and the high level network resides in the Communicator internal memory buffer.

To exchange data with the serial subnetwork, the high level network reads and writes data to the Communicator internal memory buffer.

The same memory locations are exchanged on the serial subnetwork.

The memory locations are specified when configuring the Communicator, using the Communicator built-in web interface.

The Communicator internal memory buffer is divided into two areas: Input data and Output data.

Input Data

This Input data area is read by the high level network.

The Communicator can handle up to 1448 bytes input data.

Output Data

The Output data area is read/written by the high level network.

The Communicator can handle up to 1448 bytes output data.