Siemens SIMATIC S7 - Page 774

Technical specifications
A.9 Battery board signal boards (SBs)
S7-200 SMART
774 System Manual, V2.3, 07/2017, A5E03822230-AF
Diagnostics
SB BA01 Battery Board
Critical battery level
< 2.5 V
Battery diagnostic Low voltage indicator:
• Low battery voltage causes the LED on the BA01 panel
to illuminate with the red light continuously ON.
• Diagnostic alarm and/or digital output status of battery
low condition available
Battery status Battery status bit provided
0 = Battery OK
1 = Battery low
Battery status update Battery status is updated a
t power up and then once per day
while CPU is in RUN mode.
Table A- 154 Wiring diagram for the SB BA01 Battery board (6ES7288-5BA01-0AA0)
SB BA01 Battery board (6ES7288-5BA01-0AA0)