4-6 9469200995
Communication DGC-2020ES
Table 4-4. CAN Bus Address per ECU Type
Engine ECU Address
Set this parameter to the address claimed by the Engine ECU operating on the J1939 network. In certain
cases, there is more than one ECU transmitting data on the J1939 network. This setting specifies the
ECU on the network to which the DGC-2020ES should transmit data. For more information on J1939
address handling, see J1939 Addresses below. When GM/Doosan is selected as the ECU type, the value
of this setting is ignored and the Engine ECU Address value is always 0.
Coolant Temperature Source
With From ECU selected, the DGC-2020ES accepts coolant temperature data from the ECU on CAN 2
(ECU). With From DGC Input selected, the DGC-2020ES accepts coolant temperature data from the
coolant temperature engine sender input.
Oil Pressure Source
With From ECU selected, the DGC-2020ES accepts oil pressure data from the ECU on CAN 2 (ECU).
With From DGC Input selected, the DGC-2020ES accepts oil pressure data from the oil pressure engine
sender input.
Engine Run Time Source
With From ECU selected, the DGC-2020ES accepts Engine Run Time data from the ECU on CAN 2
(ECU). With From DGC Input selected, the DGC-2020ES uses its internally tracked Engine Run Time
data.
ECU Contact Control - Output Select
Select whether the RUN output relay or the PRE (Prestart) output relay closes to give the ECU its
“energize to run” signal. In some implementations, this relay may actually be providing ECU power.
ECU Contact Control - Pulsing Enable
Select if the ECU is not to be on line at all times. Often ECUs are allowed to go “off line” to conserve
battery drain when the engine is not running. The DGC-2020ES will “pulse” it periodically to force it to be
active to allow the DGC-2020ES to read data such as coolant temperature and coolant level. This is
required if the DGC-2020ES is to report low coolant temperature conditions (which may indicate a failure
of a block heater), or low coolant level conditions (if a leak occurs while the machine is not running).
Pulsing is also used to check the integrity of CAN communications when the machine is not running.
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