33-8 9440300990
Contact Expansion Module DECS-250
Figure 33-4. CEM-2020H Input Contact and Output Contact Terminals
CAN Bus Interface
These terminals provide communication using the SAE J1939 protocol and provide high-speed
communication between the Contact Expansion Module and the DECS-250. Connections between the
CEM-2020 and DECS-250 should be made with twisted-pair, shielded cable. CAN Bus interface terminals
are listed in Table 33-2. Refer to Figure 33-5 and Figure 33-6.
Table 33-2. CAN Bus Interface Terminals
CAN high connection (yellow wire)
CAN low connection (green wire)
CAN drain connection
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