Communication with PLC devices by the Unitronics company
, Israel) supplies (free of charge) the OPC server
for communication with their devices. This software is a part of the installation CD-ROM that is supplied with each unit by default.
Then the PROMOTIC application will communicate as a client by the OPC interface
The usage OPC
communication driver or PmaOpcDaClient
object) requires purchase of the "PmOPC" licence
. When developing the application in the freeware mode PmFree
, or with development environment
and while testing it in runtime, this component is always functional.
device supports also the communication by the Modbus protocol
For this communication in the PROMOTIC system can be used: