Winco DGC-2020 - Manual (Page 251)

Table 10-3. CANbus Interface Terminals
Terminal Description
P1- HI (CAN H) CAN high connection (yellow wire)
P1- LO (CAN L) CAN low connection (green wire)
P1- (SHIELD) CAN drain connection
NOTES
1. If the AEM-2020 is providing one end of the J1939 bus, a 120
 terminating
resistor should be installed across terminals P1- LO (CANL) and P1- HI
(CANH).
2. If the AEM-2020 is not part of the J1939 bus, the stub connecting the AEM-
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 AEM-2020.
DGC-2020
AEM-2020
Other
Devices
P0053-62
Engine
120 ohm
Termination
CAN-H
CAN-L
LSM-2020
(Optional)
CEM-2020
(Optional)
120 ohm
Termination
Bus
Stub
Figure 10-5. CANbus Interface with AEM-2020 providing One End of the Bus
9400200990 Rev K DGC-2020 AEM-2020 (Analog Expansion Module) 10-7