9400200990 Rev I DGC-2020 CEM-2020 (Contact Expansion Module) 9-5
Figure 9-2. Input Contact and Output Contact Terminals
CAN Interface
These terminals provide communication using the SAE J1939 protocol and provide high-speed
communication between the Contact Expansion Module and the DGC-2020. Connections between the
CEM-2020 and DGC-2020 should be made with twisted-pair, shielded cable. CAN interface terminals are
listed in
Table 9-2. Refer to Figure 9-3 and Figure 9-4.
Table 9
-2. CAN 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
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