Check manual page of siemens_plc.counter
Siemens PLC: Counter values
The check monitors the counter 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 not WARN/CRIT unless you configure the thresholds for the check, as the
device does not report any thresholds.
One check for each configured counter is created automatically.