Generac Evolution Controller via Modbus
This topic is the install guide for the after-market gateway (part# G0097460) with the universal harness (part# A0006648426) utilizing the Generac Evolution (Air or Liquid Cooled) control panel via Modbus.
NOTE: Please reach out to Generac generator support team or Generac Link support team at least a week in advance with generator serial number. Generac must confirm if the Evolution controller on the generator is capable of supporting Modbus. Please do not proceed onsite for Modbus wiring without confirmation.
Panel Display for the Generac Evolution Control
Close View of Port Connections
Modbus Communication Settings and Notes
Settings should correspond to the values provided in this table.
Address: 157 | Data Bit: 8 |
Baud Rate: 115200 | Stop Bit: 1 |
Parity: None | |
Please refer to Generator installation/ control manuals available on Genservice for information about how to view/ edit communication settings. If Modbus configuration on the controller are different than what is mentioned above, please change the configurations on the Evolution controller to match above.
Note that Evolution controller does not support faster polling. The polling rate will be every 1 second
Equipment Connection Details
Generac Gateway Side Terminations | Description | Harness Wire Color | Equipment Side Terminations |
|---|---|---|---|
+ | DC+ | Red | Battery + |
- | DC- | Black | Battery - |
TX1 | Data Transmit | Orange / White | 388 (Connector J6—Pin#7) |
RX1 | Data Receive | White / Orange | 387 (Connector J6—Pin#8) |
GND | Data GND | Green/ White | Connect to Pin 4 of J6 connector. Note that there is no labelled wire for this pin. The harness wire needs to be inserted and secured on the pin using a tweezer tool by installer |
Harness Relay #1 | COM | Blue | Remote Start—178 |
N/O | White / Blue | Remote Start—183 |
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.