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Service and maintenance
7.2 Replace the backup battery
Battery warning
The 3 V lithium battery to back up the SRAM and the clock module is monitored in two
stages:
Battery voltage
2.7 V ±0.1 V
2.25 V ±0.25 V
In order to prevent data being lost, the battery should be replaced once the "Battery warning"
entry appears in the diagnostic buffer or, at the very latest, the first time the "Battery error"
entry appears in the diagnostic buffer.
Disposal
CAUTION
Batteries must be disposed of in accordance with local regulations.
Preparation
Note
The configuration data and contents of the SRAM in the device are buffered for at least 30
seconds.
Preparation – note the BIOS settings
Note
For the BIOS setting "Profile: Standard", the configuration data of the device will be deleted
when the battery is replaced.
For the BIOS setting "Profile: User", the configuration data of the device will be retained; only
the date and time needs to be reconfigured.
1. If necessary, note any specific BIOS setup settings if changes have been made.
2. Isolate the device from the power supply and disconnect all connecting cables.
102
Message
Diagnostic buffer entry: Battery warning
Battery warning threshold reached
Diagnostic buffer entry: Battery failure
Voltage below limit
SIMOTION P320-3 and Panel Fronts
Manual, 02/2012
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