Anybus Communicator - How the Data Exchange Works; Data Integrity

4.2. How the Data Exchange Works
Figure 2. The Communicator internal memory areas
The data exchanged between the Communicator and the PROFINET and the EtherNet/IP resides in the
Communicator internal memory buer.
The Communicator internal memory buer is divided into two areas: Input data and Output data.
Input Data
This Input data area is read by the EtherNet/IP.
The Communicator can handle up to 1448 bytes input data.
Output Data
The Output data area is read/wrien by the PROFINET.
The Communicator can handle up to 1024 bytes output data.
4.3. Data Integrity
A snapshot of the process data buer between the PROFINET/EtherNet/IP Client and the server interface is used
during the operaon of execung all the transacons 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.
How the Data Exchange Works Anybus
®
Communicator
™
- PROFINET IO-Device to EtherNet/IP Adapter
SCM-1202-195 Version 1.0 Page 7 of 56