Configuration Access IEC870SI

Language

The driver and its dialogs for configuration are only available in English.

Design

PLCs addressed with the IEC870SI driver, are divided into sectors. These sectors contain IOs (information objects) representing the actual variables. IOs refer to a variable of the process control system.

You can configure several PLCs with the IEC870SI driver. According to the used protocol, they are associated directly to a Master or polled by a Master.

Identification and addressing

870-101: The PLC is identified by a link address.
870-104: The PLC is identified by the IP address of the Master.
Sector: Addressed by COA.
IO: Addressed by type identification and IOA.

In the following chapters, you will read how to configure the IEC870SI driver, how communication takes place and you will read about compatibility issues.