Siemens Multi Panel MP270 SIMATIC HMI

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B-1

MP270 Equipment Manual

Release 01/99

Interface Assignment

IF1A

Table B-1 Pin assignment of the 15-pin Sub-D socket

Pin RS232 TTY

1 Housing

2 – RxD–

3 RxD –

4 TxD –

5 CTS –

6 – TxD+

7 – TxD–

8 Housing

9 – RxD+

10 RTS –

11 – +20 mA

12 GND

13 – +20 mA

14 +5 V/100 mA

15 GND

IF1B

Table B-2 Assignment of the 9-pin Sub-D socket

(configuration via DIL switch, see Page 7-9)

Pin PROFIBUS-DP

MPI

RS422 RS485

1 N. c.

2 N. c.

3 Data B TxD (B) Data B

4 – RxD (B) –

5 GND (floating)

6 +5 V (floating )

7 N. c.

8 Data A TxD (A) Data A

9 – RxD (A) –

15 9

Siemens Multi Panel MP270 SIMATIC HMI - Page 99