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3 Installation
3.3 Connections
3.3.12 Interfaces
RS232
The RS232 wiring is established via the connections RxD, TxD and the supply GND; alternatively, the
installed D-sub connector can be used (not available for all variants). The installed RS232 interface
allows direct connection with a higher level control.
Pin header / Terminal strip
D-Sub connector
Designation
Meaning
Pin 7
5
GND
GND
Pin 2
2
RxD
RS232 RxD
Pin 1
3
TxD
RS232 TxD
CAN
The CAN wiring is established via the connections CAN-H, CAN-L and the supply GND; alternatively,
the installed D-sub connector can be used (not available for all variants).
Pin header / Terminal strip
D-Sub connector
Designation
Meaning
Pin 7
3
GND
GND
Pin 2
2
CAN_L
CAN Low
Pin 1
7
CAN_H
CAN High