Siemens SIMATIC S7-1200 - Page 1529

Technical specifications
A.16 Communication interfaces
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1529
Diagnostics
BB 1297 Battery Board
Critical battery level
< 2.5 V
Battery diagnostic Low voltage indicator:
• Low battery voltage causes the CPU MAINT LED to
illuminate with the amber light continuously ON.
• Diagnostic Buffer Event: 16#06:2700 "Submodule
maintenance demanded: At least one battery exhausted
(BATTF)"
Battery status Battery status bit provided
0 = Battery OK
1 = Battery low
Battery status update
Battery status is updated at power up and then once per day
while CPU is in RUN mode.
Table A- 238 Insertion diagram for the BB 1297 battery board
BB 1297 battery board (6ES7297-0AX30-0XA0)