Tractor / Electrohydraulic Compatibility
Compatible EH Valve Interfaces
COMMAND can make use of either in-built rear tractor electrohydraulic valves (commonly referred to as SCVs - Selectable Control Valves; or Auxiliary Remotes) or externally mounted electrohydraulic valves.
For each valve type, COMMAND is able to provide two raise and lower functions for automatic control of function 1 (e.g. height) and function 2 (e.g. cross-slope / tilt). For CANBUS based valve types, any available SCVs/Remotes will be available for selection.
For proportional solenoid, PWM to 0-5V and Danfoss PVE types, the number of selectable outputs is limited to the number of available physical outputs on the ECU suitable for 0-5V laser inputs or external EH valves.
| Valve Interface | Description | Suitable example tractors/valves |
| JD CAN | COMMAND can communicate directly with John Deere SCVs over CANBUS, sending flow requests that will be enacted by the John Deere tractor hydraulic system. | Most modern John Deere tractors, e.g. 8R, 8RT, 9R, 9R, 9RX. |
| Proportional Solenoid | COMMAND can provide closed-loop PWM signals suitable for controlling external proportional solenoid valves requiring maximum flow current of less than 2 Amps. | Scraper systems using external proportional solenoid valves such as Eaton Vickers, Rexroth or Hydac. |
| J1939 | COMMAND can communicate directly with the T3RRA VM or other compatible hydraulic controllers using the J1939 messaging standard. | Tractor/scraper systems requiring manual controls beyond what the COMMAND ECU is capable of providing. |
| Fendt ONE | COMMAND can communicate directly with Fendt SCVs over CANBUS, sending flow requests that will be enacted by the tractor hydraulic system. | Fendt Gen 7 / ONE tractor models |
| PWM to 0-5V | Using the T3H-V001 legacy analog output adapter, COMMAND can provide 0-5V analog voltage signals suitable for John Deere legacy proportional SCV controller or Case 0-5V EHR controller inputs. | John Deere legacy proportional laser inputs or Case 0-5V EHR inputs. |
| Fendt SCR/S4/MT | Using the |
Fendt SCR, S4 and MT models where the SCV control bus is separated from the ISOBUS. |
| Danfoss PVE | Using the |
Scraper systems using external closed-loop proportional valves such as Danfoss PVEM, PVEA, PVEH or PVES. |
| VM430/431 | COMMAND can communicate directly with an existing Trimble VM430/431 valve module over CANBUS, sending flow requests that will be enacted by the Trimble valve module. | Older Case & New Holland models fitted with Trimble VM430/431 |