Pin assignment of port A
Port A is a 9-pin D-sub port of the ISO agricultural machinery interface (CAN).
Legend:
+Vin = voltage supply (+)
–Vin = ground (-)
1) - Signals marked with 1 correspond to the CiA assignment (CAN in automation).
Both signals CAN_L and CAN_L1 and/or CAN_H and CAN_H1 are linked internally and used to loop the CAN bus through.
Assigning CAN_EN_in to the supply potential (= +Vin) enables the terminal to be switched on.
The signals '-Vin' and 'CAN_GND' are directly linked with both connectors, therefore it is crucial to avoid differences in potential between the pins of these two connectors.
2) is compliant with TBC_Pwr in ISO 11783. When the terminal is switched on, this pin is under voltage (supply voltage minus approx. 1.2V).