Controlling Operation And Outputting Data With Plc Link Communications - Omron FQ2-S/CH Series User Manual

3-2 Controlling Operation and Outputting Data with PLC Link Communications

This section explains how to configure the communication settings that are required for communication
between the sensor and external devices by PLC Link. Communication specifications (PLC I/O memory area
used for PLC Link communication and types of communication commands) are also described, and a
communication timing chart is provided.
Overview of PLC Link
PLC Link (SYSMAC CS/CJ/CP/One) complies with FINS/TCP protocol.
Connect to PLC corresponding to FINS/TCP protocol.
PLC Link (MELSEC QnU/Q/QnAS) complies with MC protocol (TCP/IP).
Connect to PLC corresponding to MC protocol (QnA compatible 3E frame).
Communications Processing Flow
You can use a PLC Link to communicate between the PLC and the Sensor to perform control via command/
response communications or to output data after measurements. You can use these communications methods
simultaneously.
For PLC Link communications, the following three communications areas are set in the PLC to perform
communications.
Command/response
communications
Data output after mea-
surements
You can set the area and address settings in the communications specifications of the Sensor to assign the
above three communications areas in the I/O memory of the PLC.
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Controlling Operation and Outputting Data with PLC Link Communications
1. Command area This is the area to which you write control commands for the
Sensor to execute.
2. Response area This is the area to which the Sensor writes the results of control
commands executed from the Command Area.
3. Output area This is the area to which the Sensor writes output data for mea-
surements after an inspection is performed.
FQ2-S/CH User's Manual
for Communications Settings