12-10
TP27, TP37 Equipment Manual
Release 01/00
12.2.3 Connecting the PLC
Figure 12-3 illustrates the basic connection possibilities between the TP27,
TP37 and PLC. Standard cables are available for the connections shown (see
the ST80.1 catalog).
TTY active
RS232
TTY passive
1)
PU interface
SI 2
RS232
(9/25–pin)
RS422
(9–pin)
SIMATIC S5
TTY active
CP523
TTY active
RS232
TTY/RS232
converter
COM1/2
(9/25–pin)
RS232
PLCs of other
manufacturers
PU or PC
RS422
RS422/RS485
CPU
SIMATIC 500/505
PROFIBUS-DP
SIMATIC
S7/M7
2)
RS232/TTY
1)
Do not use the Siemens converter cable for connection by TTY/passive, because the Touch
Panel does not supply 5 V.
2)
Use only the approved cables for connection to SIMATIC S7/M7.
3)
Any PROFIBUS-DP bus terminal (except FSK)
4)
For operation via the serial interface, connect either IF1A (RS232/TTY) or IF1B (RS422/485), but
not both. The IF1B interface is configured by means of DIL switches.
3)
CP521 SI
IF1A
4)
IF1B
4)
TP27, TP37
RS485
RS485
Figure 12-3 Connection configuration diagram for PLCs
Connection
configuration
Installation
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