Detailed descriptions 17.1 Motherboard
COM 2 serial interface (V24/Mouse), X31
The serial interface (COM 2) has the following pinout:
COM 2 serial interface (V24/Mouse)
PinNo. | Abbreviation | Meaning | Input/Output |
1 | DCD (M5) | Receiving signal level carrier | Input |
2 | RxD (D2) | Received data | Input |
3 | TxD (D1) | Transmitted data | Output |
4 | DTR (S1) | Data terminal ready | Output |
5 | GND (E2) | System ground (reference potential) | – |
6 | DSR (M1) | Ready for operation | Input |
7 | RTS (S2) | Request to send | Output |
8 | CTS (M2) | Clear to send | Input |
9 | RI (M3) | Incoming call | Input |
SIMATIC Panel PC 877 | |
Operating instructions, Release 07/2006, |
