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Siemens PLC: Duration values

Distribution: official part of Check_MK
License: GPL
Supported Agents: SIEMENS_PLC

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.

Discovery

One check for each configured duration value is created automatically.