Winco DGC-2020 - Manual (Page 194)

NOTES
1.) If the DGC-2020 is providing one end of the J1939 bus, a 120
 terminating
resistor should be installed across terminals 48 (CANL) and 49 (CANH).
2.) If the DGC-2020 is not part of the J1939 bus, the stub connecting the DGC-
2020 to the bus should not exceed 914 mm (3 ft) in length.
3.) The maximum bus length, not including stubs, is 40 m (131 ft).
4.) The J1939 drain (shield) should be grounded at one point only. If grounded
elsewhere, do not connect the drain to the DGC-2020.
AEM-2020
(Optional)
DGC-2020
Other
Devices
P0053-95
Engine
120 ohm
Termination
CAN-H
CAN-L
LSM-2020
(Optional)
CEM-2020
(Optional)
120 ohm
Termination
Bus
Stub
Figure 6-4. CANbus Interface with DGC-2020 providing One End of the Bus
DGC-2020
AEM-2020
(Optional)
Other
Devices
P0053-94
Engine
120 ohm
Termination
CAN-H
CAN-L
LSM-2020
(Optional)
CEM-2020
(Optional)
120 ohm
Termination
Bus
Stub
Figure 6-5. CANbus Interface with Optional AEM-2020 providing One End of the Bus
6-8 DGC-2020 Installation 9400200990 Rev K