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DGC-2020ES Communication
Scania
The majority of CAN Bus parameters are sent from Scania Engine ECUs via standard J1939
communications. However, some additional proprietary parameters are sent via Scania proprietary J1939
communications. Proprietary Start, Stop, and Emergency Stop commands are sent from the
DGC-2020ES to the Scania ECU. The ECU communicates Diesel Exhaust Fluid (DEF) Levels, as well as
DEF Fluid Low, DEF Low Severe, DEF Inducement, and DEF Severe Inducement Pre-Alarms to the
DGC-2020ES through Proprietary Scania parameters. Additional information on DEF related parameters
can be found in the Exhaust Treatment chapter.
John Deere
The Regeneration Interlock setting enables John Deere proprietary parameters to be broadcast over the
J1939 CAN Bus.
The Regeneration Interlock parameter is sent via the Stationary Regeneration/Cleaning CAN Lockout
Message PGN, which is PGN 61194. When the DGC Regeneration Interlock value is set to Enabled, the
DGC-2020ES sends a value of 01 (binary) for the two bit “Allowed” configuration which allows
regeneration to occur. When the DGC-2020ES Regeneration Interlock value is set to Disabled, the DGC-
2020ES sends a value of 00 (binary) for the two bit “Not Allowed” configuration which inhibits
regeneration.
The DGC-2020ES sends starter engagement requests to the ECU via the SAE J1939 Engine Start
Control PGN. When the DGC-2020ES requests the starter to be engaged it sends a value of 01 (binary)
for the two-bit starter engagement parameter. Otherwise the DGC-2020ES sends a value of 00 (binary)
for the two-bit starter engagement parameter.
Isuzu
When the ECU type is set for Isuzu, the Clear ECU Memory and Escape Mode Request buttons are
operational. When the Clear ECU Memory button is clicked, it will remain on for five seconds and then
turn off, sending a five-second long memory clear request to the engine ECU. When the Escape Mode
Request button is clicked, a temporary override of inducement to not operate the engine is sent to the
ECU.
Daimler CPC4
When the ECU type is set for Daimler CPC4, the DGC-2020ES monitors the Torque Limit (LIM) Lamp
Status broadcast via proprietary J1939 communications from the Daimler engine ECU to the
DGC-2020ES. When the monitored LIM Lamp status indicates the lamp is on solid, the DGC-2020
annunciates a pre-alarm displaying the LIM symbol and text “Torque Limit”. When the monitored LIM
Lamp status indicates the lamp is flashing, the DGC-2020ES annunciates a pre-alarm displaying the LIM
symbol and text “Torque Limit Severe”. The DGC-2020ES also displays the LIM symbol in the exhaust
status display portion of the front panel display.
Yanmar
Some DTC-FMI combinations report different Yanmar P Codes depending on whether the engine has
three or four cylinders. The Number of Cylinders setting specifies how many cylinders exist in the engine.
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