Beckhoff CB3052 User Manual Page 18

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Chapter: Connectors External CMOS Battery
page 18 Beckhoff New Automation Technology CB3052
3.4 External CMOS Battery
For keeping the internal clock alive even if the rest of the board is switched off, an external battery can be
attached via a 2 pin connector (JST B2B-EH-A, mating connector: EHR-2).
Pin
Name Description
1 BATT battery 3.3 volt
2 GND ground
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