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Technical specificationsPin-out diagramsPort C
 
 
Port C
 
 9pol. Sub D Stecker
9-pin Sub-D connector
 
 
Pin
Signal name
Function
1
(DCD1)
Switched input voltage, ≤ max. 250 mA total (Pin 1 + Pin 4)
6
DSR
DSR
2
/RxD
/RxD
7
RTS
RTS
3
/TxD
/TxD
8
CTS
CTS
4
(DTR)
Switched input voltage, ≤ max. 250 mA total (Pin 1 + Pin 4)
9
(RI)
5 V ≤ 250 mA
5
GND
Signal ground
Electromagnetic shielding
Electromagnetic shielding
ESD/EMV shielding