CDX800 DESCRIPTION
Circuit example of the meter with modem CDX 800 with data length more then 10 m:
M-BUS data cable more then 10m it is need to use over-voltage protection
on CDX 800 modem side!
18
Pin 1 – SGND
Pin 2 – SGND
Pin 3 –
M-BUS
(-)
Pin 4 –
M-BUS
(+)
Pin 5 –
M-BUS
(-)
Pin 6 –
M-BUS
(+)
Pin 7 – +12V EXT
Pin 8 – +12V EXT
Modem CDX 800
SGND
M-BUS (-)
M-BUS (+)
Meter
SGND
M-BUS (-)
M-BUS (+)
Meter
1X
2X
1Y
2Y
OVPM-21
DC
+
