Connecting The Plc - Siemens SIMATIC TP 270 Operating Instructions Manual

4.3.5

Connecting the PLC

Connection configuration
The figure below illustrates the basic connection possibilities between the HMI device and
PLC. Standard cables are available for the connections shown (refer to the ST80 catalog).
Operating unit
Figure 4-5
• SIMATIC S7
• IF1A / IF1B
• PROFIBUS DP
TP 270, OP 270, MP 270B (WinCC flexible)
Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0
IF1A
IF1B
Connection configuration for PLCs
Use only the approved cables for connection to a SIMATIC S7.
To enable communication using the serial interface, connect either the IF1A (RS 232) or
IF1B (RS 422/485), but not both. The 1F1B interface can be configured using a switch.
Any PROFIBUS-DP bus terminal can be used.
RS 232
RS 422
RS 232
RS 422/RS 485
RS 485
RS 485
PROFIBUS-DP
Installation and connection
4.3 Connecting the HMI device
SIMATIC 505
RS 232
(9/25-pin)
RS 422
(9-pin)
PLCs of other
manufacturers
SIMA TIC S7
4-13