Check manual page of siemens_plc.duration
Siemens PLC: Duration values
The check monitors the duration values reported by Siemens PLC (SPS) devices. Currently the
check can only deal with hour based values.
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. When the duration value is smaller than the previous
one, the check goes to CRIT for one check.
One check for each configured duration value is created automatically.