The Digital Matter iButton Reader has the following wire colours:
| Wire Color | Function |
|---|---|
| Red | iButton Signal Line |
| Black | Ground |
| Green | Green LED (with 1000 ohm resistor) |
| Brown | Red LED (with 1000 ohm resistor) |
| Yellow | LED Negative |
G120 Harness Definition
Please see G120 Harness Definition
Connecting an iButton reader to the G120
- Connect Brown and Green (Pin 13 and Pin 14) on the G120 to the Red iButton Signal Line on the iButton reader
- Connect the Black iButton wire to Ground
Parameters
The G120 must be told to expect an iButton input in parameters. This is done from the 4 Wire Plug Function tab.
Once the connections are completed, the device can read the iButton data.