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Connectors UM0559
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3 Connectors
3.1 CAN bus connector
Figure 7. CAN connector 9 pin male D-type: CN4
3.2 RS232 serial data connector
9-pin general purpose D-type male connectors.
Figure 8. RS232 transmit and receive connectors: CN2, CN3
Table 6. CAN connector pinout: CN4
Pin Description Pin Description Pin Description
1 Not connected 4 Not connected 7 CAN H, high side bus output
2 CAN L, low side bus output 5 Not connected 8 Pull down to ground
3 Ground 6 Ground 9 Pull up to +5 V
5 4 3 2
1
9 8 7 6
CAN - data
Table 7. RS232 connector pinout: CN2, CN3
Pin Description Pin Description Pin Description
1 Shorted to pin 4 and 6 4 Shorted to pin 1 and 6 7 Shorted to pin 8
2 R1IN (port A), R2IN (port B) 5 Ground 8 Shorted to pin 7
3 T1OUT (port A), T2OUT (port B) 6 Shorted to pin 1 and 4 9 Not connected
RS232 - Data A
RS232 - Data B
5 4 3 2
1
9 8 7 6
5 4 3 2
1
9 8 7 6