3-6
OP37/Pro Equipment Manual
Release 7/98
3.1.2
Setting Serial Interface IF1B
The IF1B serial interface is set to RS485 with RTS on pin 4 ex works. Using
the DIP switches next to the socket, the interface can be set to other RS485
modes or to RS422 mode. Only the switch settings shown in Figure 3-3 are
permissible.
1
2
3
4
RS422:
1
2
3
4
OFF
ON
RS485:
without RTS
1
2
3
4
RS485:
1
2
3
4
RS485:
RTS on pin 9
RTS on pin 4
OFF
ON
Figure 3-3
Permissible DIP switch settings
DIP switches for
IF1B
Electrical Installation
Summary of Contents for SIMATIC HMI OP37/Pro
Page 6: ...iv OP37 Pro Equipment Manual Release 7 98 Preface ...
Page 8: ...6 10 OP37 Pro Equipment Manual Release 7 98 Servicing Maintenance ...
Page 26: ...3 8 OP37 Pro Equipment Manual Release 7 98 Electrical Installation ...
Page 54: ...6 10 OP37 Pro Equipment Manual Release 7 98 Servicing Maintenance ...
Page 60: ...A 6 OP37 Pro Equipment Manual Release 7 98 Technical Data ...
Page 72: ...Glossary 2 OP37 Pro Equipment Manual Release 7 98 Glos ...