Siemens PC 670 Wartungshandbuch Seite 132

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Hardware Information
6-16
SIMATIC Panel PC 670 Computing Unit Equipment Manual
Edition 12/01
Gender changer for COM1
You can convert the COM1/V24/PLC port of the SIMATIC PC family into a 25-pin
male connector by means of the enclosed gender changer (25-pin/25-pin). Plug the
gender changer onto the COM1socket and secure it with the two hexagon head
screws.
Pin
No.
Meaning Direction Pin
No.
Meaning Direction
1 Shield GND 14 NC
2 Transmitted data (TxD/D1) Output 15 NC
3 Received data (RxD/D2) Input 16 NC
4 Power up sender (RTS/S2) Output 17 NC
5 Clear to send (CTS/M2) Input 18 +TTY transmitted data
(TxD)
Output
6 Data set ready (DSR/M1) Input 19 Floating current source Positive
potential
7 Station ground (GND/E2) Ground 20 Data terminal equipment
ready (DTR/S1)
Output
8 Received signal carrier
(DCD/M5)
Input 21 TTY transmitted data
(TxD)
Output
9 +TTY received data (RxD) Input 22 Incoming call (RI/M3) Input
10 TTY received data (RxD) Input 23 NC
11 NC 24 NC
12 NC 25 NC
13 NC Casing GND
Serial port COM2 (V24/mouse)
The serial port on the computing unit is assigned as follows:
Connector 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
5
9
4 DTR (S1) Data terminal equipment
ready
Output
5 GND (E2) Station ground -
6 DSR (M1) Data set ready Input
1
6
7 RTS (S2) Request to send Output
8 CTS (M2) Clear to send Input
9 RI (M3) Incoming call Input
Seitenansicht 131
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