Battery Board BB 1297
SIMATIC S7-1200, Battery Board BB 1297 for long-term buffering of the real time clock, plug-in in the signal board receptacle of the S7-12XX (FW3.0 or higher); Battery (CR1025) not included in scope of delivery
- In the event of CPU shutdown, the rail-time clock of the S7-1200 CPU is supplied with power by means of a high-performance capacitor. The capacitance of the capacitor determines the power reserve for the real-time clock.
- The use of the battery board extends the power reserve by up to one year.