Siemens alarm 1044*: Battery absolute module
SINUMERIK 840C legacy alarm · Siemens 840C
What it means
The SIPOS absolute encoder stores absolute position via a battery on its absolute submodule; every ~10 minutes the module checks remaining capacity and raises this alarm when it reaches a critical minimum. If the battery dies, absolute position reference is lost after power-off and must be re-established.
Likely causes
- Absolute-submodule battery end of life
- Long storage of encoder without power
- Poor battery contact in submodule
Triage note: * suffix = axis index
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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SIPOS absolute submodule battery per encoder description
encoder battery · Common cause
Need the part urgently?
Send us alarm 1044* with your machine details — typical RFQ turnaround is 24–48h.