Battery Alarm - Siemens SIMOTION P320-4 E Commissioning And Hardware Installation Manual

Alarm, error and system messages

11.3 Battery alarm

Error response
An I/O alarm is activated.
Cause of error / troubleshooting
One of the two monitored temperatures has reached or exceeded its threshold.
The temperature must fall below the threshold value before the alarm is reset.
If the temperature alarm is issued, the user and/or the machine manufacturer (user program)
must decide whether or not processing should be interrupted and SIMOTION P320-4 exited
and switched off.
The user can program a customized response to this and allow the program to continue, if
appropriate.
The default response is for the operating mode to switch to STOP.
Note
Further information on programming alarm responses can be found in the SIMOTION Runtime
Basic Functions Function Manual.
11.3 Battery alarm
When the critical battery status is reached, the battery must be replaced as quickly as possible.
Because the SIMOTION P320‑4 often cannot be shut down at short notice during operation,
it is important to perform a programmable response to this battery state.
For this case, the system variable
● persistentdatapowermonitoring.warningbatteryvoltagelevel1
can be used to catch the complete loss of the retain data if the battery cannot be replaced fast
enough.
Users should periodically save their retain data (e.g. with the _savePersistentMemoryData
function). This ensures that the operating state established after the next start up represents
the most current status of the retain data possible.
System variable persistentDataPowerMonitoring
If no response to this system variable has been programmed, there is the danger of the
complete loss of retain data if a power failure occurs before the battery can be replaced.
In this case, only the retain data for the last back up, normally the last shut down of the
SIMOTION P320‑4, is available after the next power-up.
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WARNING
SIMOTION P320-4 E / P320-4 S
Commissioning and Hardware Installation Manual, 01/2015