9400000-J0 Rev E
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7.5 CAN Serial Ports
Each module communicates with the CXC HP controller using CAN protocol. The modules report alarms, rectifier
output voltages, and the location of the module within a cabinet.
7.5.1 Making CAN Bus Connections
Figure 7 shows an example of a controller and three shelves.
1. Daisy chain the CAN bus cables from the controller to shelf #1, shelf #2 and then to the last shelf #3.
2. Insert the CAN terminator in the last shelf, as shown in Figure 7.
Figure 7 — CAN Port Connections
1
2
3
3
Rectifier shelf #2
CAN IN
CAN OUT
Rectifier shelf #1
CAN IN
CAN OUT
CAN terminator
Insert CAN Jumper
CAN OUT
CAN IN
Rectifier shelf #3
CAN terminator
CAN IN
CAN OUT
CXC HP Controller
CAN 2
CAN 1