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68 Appendix B: Technical reference
Battery
• Used to maintain time and date settings of the motherboard's real-time clock.
• Chemistry: Lithium Carbon-Monofluoride (Li/(CF)x) system.
• Capacity: 195 mAh.
• Battery voltage: 3 V.
• Diameter (max): 20 mm.
• Battery type: BR2032.
Auxiliary I/O interface
• 8 independent auxiliary open-collector output signals that can be used to transmit
application-specific user output and 8 independent TTL auxiliary input signals
that can be used to receive application-specific user input.
• Auxiliary input signals have interrupt-generation capabilities.
• Can connect to NPN-compatible PLC devices, PNP-compatible PLC devices,
inductive load devices, lighting devices, and TTL devices.
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