The SIMATIC S7-1200 Battery Board BB 1297 - 6ES7297-0AX30-0XA0 from Siemens is used for the long-term backup of the real-time clock and is simply plugged into the CPU's signal board slot. A suitable battery (CR1025) is not included in the scope of supply and must be ordered separately. The Battery Board can be used from version FW3.0 and later.
| Part Width | 5 mm |
| Part Height | 8 mm |
| Part Depth | 2 mm |
| Weight | 23 g |
| Country of Origin | China |
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