Connection Elements - Siemens SIMATIC HMI OP3 Equipment Manual

Device Description

15.2 Connection Elements

Positions of the The connections for the
connection
elements
are located on the right side of the housing.
The connection elements and their positions are illustrated in 15-2.
Figure 15-2 Positions of the Connection Elements on the OP3 (right hand of housing)
Power supply Power (24V DC) is supplied via the SV connection when the OP3 is not
connected to a SIMATIC S7 PLC (serial download/offline mode).
For this purpose, use one of the following optional plug-in power supply
units
If the OP3 is connected through the MPI interface to a SIMATIC S7 PLC, it
is supplied with power by the PLC through the MPI interface.
RS232 Interface Pin assignment of the RS232 interface:
15-2
power supply,
RS232 interface and
MPI interface
Power supply (SV) DC 24V
6ES7705-0AA00-1AA0 for the 230V AC alternating voltage connection,
6ES7705-0AA00-1BA0 for the 120V AC alternating voltage connection.
Pin
1 Shield
2 GND
3 RxD
4 TxD
5 CTS
6 RTS
1 2 3 4 5
6 7 8 9
MPI interface, 8-pin
RS232
Meaning
Operator Panel OP3
Edition 11/99