Check manual page of siemens_plc_info

Siemens PLC: Output Text Values
Distribution official part of Check_MK
License GPL
Supported Agents Siemens_Plc
The check simply outputs the current text of string values reported by Siemens PLC (SPS) devices.

You need to use and configure the special agent agent_siemens_plc which is using the SNAP7 library to communicate with the Siemens PLC. When you are using OMD, everything is already installed and configured. In manual setups, you will need to ensure that the snap7 library and python module snap7 are installed. To make temperature values available for the check, you need to configure the memory addresses and data types to read from the device as temperature values.

The checks does always returns OK.

Item

Name of the device and the mode seperated by a space

Discovery

One service is created for each configured text value.