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Communication with PLC devices by the Elsaco company (Czechia)

The Elsaco company delivers PLC devices and PROMOS (PROMOS line 2) units. It is possible to communicate with these devices via the computer's serial port RS485 by several protocols:

Communication by the Modbus protocol

Modbus is a standard, very often used protocol for Ethernet-client and for serial link.
For this communication in the PROMOTIC system can be used:
- PmModbusMr - Driver for communication by the Modbus Master protocol.
For easy integration of this driver into the application it is handy to use:
- Preconfiguration "PmModbusMr - Communication set with data and panel for non-defined device"

The SAM protocol (ASCII)

Very simple protocol (like the building set ADAM) that allows to address more units on the common bus. It is used usually at simple devices that don't require the fast transmission of greater volume of data.
For this communication in the PROMOTIC system can be used:
- PmChar - Driver for communication by user defined ASCII/BIN protocol.

PROFIBUS DP protocol

The standard industrial protocol. It can be used the OPC server from various suppliers for this protocol.
Then the PROMOTIC application will communicate as a client by the OPC interface.

OPC server by the ELSACO company

The ELSACO company, the PLC manufacturer, also provides the OPC server for communication with these PLCs.
Then the PROMOTIC application will communicate as a client by the OPC interface.
PROMOTIC 9.0.31 SCADA system documentation MICROSYS, spol. s r.o.

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