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Technical data

12.4 Interfaces

TP 270, OP 270, MP 270B (WinCC flexible)

Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0

12-9

12.4 Interfaces

IF1A

Table 12-1 9-pin Sub-D plug (pin)

Pin RS 232

1 -

2 RXD

3 TXD

4 -

5 GND

6 -

7 RTS

8 CTS

9 -

IF1B

Table 12-2 9-pin Sub-D socket (configuration via switch)

Pin RS 422 RS 485 / PROFIBUS-DP / MPI

1 N.C.

2 N.C.

3 TXD+ Data B

4 RXD+ RTS-AS

5 GND (floating)

6 +5 V (floating)

7 N.C.

8 TXD- Data A

9 RXD- -

Siemens SIMATIC TP 270 User Manual

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