Siemens SIMATIC S7-200 System Manual page 483

Use the S7-200 RS-232/PPI Multi-Master Cable with STEP 7- -Micro/WIN 3.2
Service Pack 4 (or later)
For connection directly to your personal computer:
Set the PPI mode (Switch 5=1)
-
Set Local (Switch 6=0)
-
Set 11--bit mode (Switch 7=0)
-
For connection to a modem:
Set the PPI mode (Switch 5=1)
-
Set Remote (Switch 6=1)
-
Set 11--bit mode (Switch 7=0)
-
Tip
All other switches other than those noted above do not matter when using PPI mode.
Figure A-44 shows the S7-200 RS-232/PPI Multi-Master Cable dimensions, label and LEDs.
0.8 m
RS-232 COMM
Figure A-44 S7-200 RS-232/PPI Multi-Master Cable Dimensions, Label and LEDs
130 mm
51 mm
1
0
1 2 3 4 5 6 7 8 8
Kbaud 123
115.2 110
57.6 111
38.4 000
19.2 001
9.6 010
4.8 011
2.4 100
1.2 101
LED Color Description
Tx Green RS-232 transmit indicator
Rx Green RS-232 receive indicator
PPI Green RS--485 transmit indicator
Technical Specifications
4.7 m
RS-485 COMM
8 Spare
7 1=10 Bit
0=11 Bit
6 1=Remote / DTE
0= Local / DCE
5 1=PPI (M Master)
0=PPI/Freeport
4 Spare
Appendix A
469