Kohler Decision-Maker 550 Controller
This topic is the install guide for the after-market gateway (part# G0097460) with the universal harness (part# A0006648426) when utilizing the Kohler Decision-Maker® 550 Controller.
Kohler Decision-Maker 550 Controller Panel
Main Logic Schematic
Modbus Communication Settings and Notes
Settings should match values provided in this table.
Protocol: Modbus | Primary Port RS485: Yes |
Modbus Online: Yes | Address: 1 |
Connection Type Single: Yes | Baud Rate: 9600 |
If different settings are required, please contact Support.
To update Modbus settings local programming mode will need to be by enabled. Then confirm the below settings are configured by:
Navigating to Menu 14-Programming Mode
Update Programming Mode to Local
Navigating to Menu 13–Communications
At protocol choose MODBUS
Confirm Modbus Online is Yes
Confirm connection Type Single is Yes
Confirm Primary Port RS485 is Yes
Confirm Address is 1
Confirm Baud Rate is 9600
Generac Gateway Side Terminations | Description | Harness Wire Color | Equipment Side Terminations |
|---|---|---|---|
+ | DC+ | Red | TB1-5 |
- | DC- | Black | Ground Terminal |
A2 | Data + | Blue / White | TB15-3 |
B2 | Data - | White / Blue | TB15-4 |
GND | Data GND | White / Green | TB15-1 |
Harness Relay #1 | COM | Blue | TB1-10 |
N/O | White / Blue | TB1-11 |
Gateway Connection Ports
Gateway Right Panel—GPS antenna and harness I/O connections
Gateway Left Panel—Cellular antenna, power, serial communication ports, and SIM card slot
Check out our knowledge base and support center for information on any technical questions.