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About Anybus Communicator
4.3
How the Data Exchange Works
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 1500 bytes input data.
Output Data
The Output data area is read/written by the high level network.
The Communicator can handle up to 1500 bytes output data.
4.4
Data Integrity
A snapshot of the process data buffer between the Modbus Client and the server interface is
used during the operation of executing all the transactions within one cycle.
When the cycle is completed, the process data available on the server interface is updated and a
new snapshot is created for the next cycle.
®
™
Anybus
Communicator
User Manual
15 (124)
SCM-1202-162 1.1 en-US
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