Siemens PC 670 - Manual (Page 144)

Hardware Information Release 04/02
7-12 Panel PC 670 Computing Unit, Equipment Manual
Serial interface COM2 (V24/Mouse)
The serial interface (COM2) of the computing unit is assigned as follows
1
5
6
9
Figure 7-2 Serial interface COM2 (male)
Pin No. Short Name Meaning Input/Output
1 DCD (M5) Data carrier detect Input
2 RxD (D2) Received data Input
3 TxD (D1) Transmission data Output
4 DTR (S1) Data terminal equipment
ready Output
5 GND (E2) Station ground -
6 DSR (M1) Data set ready Input
7 RTS (S2) Request to send Output
8 CTS (M2) Clear to send Input
9 RI (M3) Incoming call Input