Volvo Penta EDC III Applications
Engines equipped with Volvo Penta EDC III controllers can receive engine control commands (such as
start and stop) from the DGC-500 through the SAE J1939 communication interface. To invoke this
feature, the EDC III must receive a J1939 message containing engine control information within one
second of waking (exiting sleep mode). If the EDC III does not receive an engine control message within
the prescribed time, it will enter the stand-alone mode and ignore any J1939 control messages. If this
occurs, the EDC III must be forced back into sleep mode by pressing the auxiliary stop pushbutton on the
engine or by momentarily disconnecting EDC power.
The interconnection diagrams of Figures 5-11 through 5-14 illustrate the DGC-500 and EDC III
connections that allow the DGC-500 to awaken the EDC III and start the engine, or simply acquire engine
status information. Wake-up of the EDC III is initiated by using the DGC-500 Fuel output contacts to apply
battery power to the EDC. To stop the engine, the DGC-500 issues a sleep command through the J1939
interface to the EDC III and opens the Fuel output contacts. This causes the EDC to stop the engine and
enter the sleep mode.
In order for the DGC-500 to communicate with the EDC III, two DGC-500 settings must be changed from
their default values.
• The J1939 address of the DGC-500 must be set at 17
• The engine start/stop configuration setting must be set for Volvo Penta
Both settings are configured on the System Settings screen of BESTCOMS. Section 4, BESTCOMS
Software has information about adjusting DGC-500 settings through BESTCOMS.
5-10 DGC-500 Installation 9355400990 Rev H
To Next Page
