MOUNTING AND WIRING 4-17
SB1391 Hardware and Setup Guide - Document revision no. 1.14
FIGURE 4-15 CAN bus
4.4.2.1. CAN Connection Troubleshooting
If a fault occurs with the CAN communication, the CAN indicator lights turns red. Proceed as
follows:
TABLE 4-16 CAN connection troubleshooting
Possible Cause Corrective Action
1. Incorrect mode Check the CAN rotary switch.
2. CAN communication problem Verify that the RS-232/422/485 baud rate is one of
the following:
• 9,600
• 19,200
• 38,400
• 57,600
3. CAN bus supply not reaching CAN
connector
Check pins 3 and 9.
4. COM_SD DIP switch on front
panel is not OFF.
Turn COM_SD switch OFF.
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