Table — Device Cabling to C3 Field Unit Ports — Color Codes

Larry Pitts

Created: ; updated: .

C3 Cabling Details

Note: whenever possible, a device’s associated Tech Note should be consulted for installation information. In this table, available Tech Notes are linked to the device name. If there is no Tech Note, then the device is linked to its relevant Product Support Page.

All wire-to-wire junctions must be done via the supplied junction boxes. 

 

Device

Wire Color

C3 Port

Function

Davis Rain Gauge

Red

Input 1, 2, 3, or 4

Signal

Green

Associated ground

Ground

Flow Sensors

Red or White (typical)

Input 1, 2, 3 or 4

Signal

Black

Associated ground

Ground

Elektonic EE071   

Brown

RS-485 +

Power for sensor

Blue

RS-485 A

 RS-485 A

White

RS-485 B

 RS-485 B

Black

RS-485 ground

Ground

Gray

Not connected

Not connected

Senix Level Sensors  

Brown

RS-485 +

Power for sensor

Yellow

RS-485 A

 RS-485 A

Gray

RS-485 B

 RS-485 B

Blue

RS-485 ground

Ground

Decagon VP4

White

RS-232/SDI +

Power for sensor

Red

RS-232/SDI Rx

SDI-12 

Bare

RS-232/SDI ground

Ground

Decagon GS3

White

RS-232/SDI +

Power for sensor

Red

RS-232/SDI Rx

SDI-12

Bare

Ground

Ground

Stephens Hydra Probe

Red

RS-232/SDI +

Power for sensor

Blue

RS-232/SDI Rx

SDI-12

Black

Ground

Ground

Schneider OsiSense

Blue

Input 1,2,3 or 4

Supply

Brown

Ground

Return

Aqua Blu

Brown

RS-232-/SDI +

Power for sensor

Blue

RS-232/SDI Rx

SDI-12

Yellow

Not connected

Not connected

Green/Yellow

Ground

Ground

Aqua Check

Brown

RS-232/SDI +

Power for sensor

Blue

RS-232/SDI Rx

SDI-12

Green/Yellow

Ground

Ground



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