RTC-DCF77 Interface
With the RTC - DCF77 - Interface you can read out the local time from 2 time sources (DCF77 or RTC) and transmit these signals via RS422 bus to any peripheral hardware. There is also an integrated LCD on which you see the date and time. With the integrated 4 buttons you are able to set the time and date - but only in RTC mode. Daylight saving time is set separately. The RTC - DCF77 interface is powered by external 24VDC or by internal backup battery. While supplying the hardware in battery mode only the internal RTC is running. Transmission via RS422 bus and LCD is then disabled. The current consumption in battery mode is only a few uA. Mounting is done with 4 x M3 screws or optionally on a DIN rail.
  • input voltage: 12VDC - 30VDC.
  • power consumption: < 0.5W
  • PCB size: 80x47mm
  • Layout: TARGET3001! / Firmware: MPLAB IDE
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Periphery, that works with this interface: