Winco DGC-2020 - Manual (Page 205)

9400200990 Rev K DGC-2020 Installation 6-19
Connections for MTU MDEC ECU Applications
MTU MDEC ECUs, supplied on some Detroit Diesel engines, can receive engine control commands from
the DGC-2020 and transmit engine operating status information to the DGC-2020 through the SAE J1939
communication interface.
In order for the DGC-2020 to communicate with the MTU MDEC ECU, ECU support must be enabled on
the CANbus Setup screen of BESTCOMSPlus and “MTU MDEC” must be selected as the engine
configuration. The appropriate ECU module type, speed demand source, and engine rpm must also be
selected.
The MTU MDEC ECU must be configured properly in order for CANbus communication to function
correctly. The parameters listed in Table 6-13 must be configured in the ECU with the MTU service tool.
Contact Detroit Diesel if ECU reconfiguration is required and your facility is not equipped to perform this
task.
Table 6-13. MTU MDEC ECU Configuration Parameters
MTU
Parameter
Number
Parameter Name Description and Value
200 CANbus Interface Config Param Set to 898 – Indicates one CANbus with PIMS
201.01 CANbus Monitor Nodes 1–16 Binary value indicating which communication
devices are on the CANbus network. If a binary
representation of this parameter’s value does
not have the bit set corresponding to a value of
00100000, take the value in this register, add
32 to it, and rewrite it to the register to set the
bit. This informs the MTU MDEC ECU that a
third part controller resides on the CANbus.
156.19 CANbus Speed Demand Switch
Active Set to 1 – This is necessary only if it is desired
to set the engine speed demand source and
speed demand from the DGC-2020. This
capability may be blocked by setting the
parameter to 0.
The interconnection diagrams of Figures 6-14 through 6-17 illustrate DGC-2020 and MTU MDEC ECU
connections for four types of generator sensing configurations.