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4.1 INTRODUCTION
There are 2 interfaces available on the D2O RG1. The 8-Pin M12 Connector,
located centrally, is the interface port that connects to the tipping bucket
rain gauge. The 4-Pin M12 Connector is used to connect the D2O RG1 to
a computer via the 4-Pin M12 to USB-A Cable during the commissioning
process.
4.2 4-PIN M12 TO USB-A CABLE
To program and commission the D2O RG1 via the Serial Terminal software,
a 4-Pin M12 to USB-A Cable (sold separately) is required. The 4-Pin M12
connector interfaces to the matching port on the underside of the D2O RG1
unit.
4.3 8-PIN M12 INTERFACE CABLE
The D2O RG1 can be connected to a tipping bucket rain gauge using the 8-Pin
M12 Interface Cable. One end of the cable has the 8-Pin M12 Female Interface
and the other has 8 ferruled capped wires to enable custom wiring.
The pin arrangement for the female connector and the corresponding wire
colours are shown in the diagram below. Once connected to the D2O, their
corresponding functions are shown in the table.
Wires that are not used can be cut off.
1
7
8
2
6
3
5
4
12 - D2O RG1 Product Manual
TO COMPUTER
PIN 1
WHITE
Not Used
PIN 2
BLUE
Pulse Input
PIN 3
PINK
Wire Fault - Terminate with PIN 6
PIN 4
PURPLE
Not Used
PIN 5
YELLOW
Not Used
PIN 6
GREEN
Signal GND
PIN 7
BROWN
Not Used
PIN 8
RED
Not Used
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