CDX800 DESCRIPTION
Circuit example of the meter with modem CDX 800 with data length more then 10 m:
At RS485 data cable more then 10m it is need to use over-voltage protection
on CDX 800 modem side!
16
Pin 1 – SGND
Pin 2 – SGND
Pin 3 – RxD (-)
Pin 4 – RxD (+)
Pin 5 – TxD (-)
Pin 6 – TxD (+)
Pin 7 – +12V EXT
Pin 8 – +12V EXT
Modem CDX 800
1X
2X
1Y
2Y
OVPM-31
DC
+
1X
2X
1Y
2Y
SGND
TxD (-)
TxD (+)
RxD (-)
RxD (+)
Meter
