Siemens SIMATIC S7-200 System Manual page 482

S7-200 Programmable Controller System Manual
S7-200 RS-232/PPI Multi-Master Cable
Table A-69 S7-200 RS-232/PPI Multi- -Master Cable - - Pin-outs for RS-485 to RS-232 Local Mode Connector
RS-485 Connector Pin-out
Pin Number
1 No connect
2 24 V Return (RS-485 logic ground)
3 Signal B (RxD/TxD+)
4 RTS (TTL level)
5 No connect
6 No connect
7 24 V Supply
8 Signal A (RxD/TxD--)
9 Protocol select
1
Pins 4 and 6 are connected internally.
Table A-70 S7-200 RS-232/PPI Multi- -Master Cable - - Pin-outs for RS-485 to RS-232 Remote Mode
Connector
RS-485 Connector Pin-out
Pin Number
1
2
3
4
5
6
7
8
9
1
A conversion from female to male, and a conversion from 9-pin to 25-pin is required for modems.
2
Pins 4 and 6 are connected internally.
Use the S7-200 RS-232/PPI Multi-Master Cable with STEP 7- -Micro/WIN as a
replacement for the PC/PPI cable or for Freeport operation
For connection directly to your personal computer:
Set the PPI/Freeport mode (Switch 5=0)
-
Set the baud rate (Switches 1, 2, and 3)
-
Set Local (Switch 6=0). The Local setting is the same as setting the PC/PPI cable to DCE.
-
Set the 11 Bit (Switch 7=0)
-
For connection to a modem:
Set the PPI/Freeport mode (Switch 5=0)
-
Set the baud rate (Switches 1, 2, and 3)
-
Set Remote (Switch 6=1). The Remote setting is the same as setting the PC/PPI cable to
-
DTE.
Set the 10 Bit or 11 Bit (Switch 7) to match the number of bits per character setting of your
-
modem.
468
Signal Description
Signal Description
No connect
24 V Return (RS-485 logic ground)
Signal B (RxD/TxD+)
RTS (TTL level)
No connect
No connect
24 V Supply
Signal A (RxD/TxD--)
Protocol select
RS-232 Local Connector Pin-out
Pin Number Signal Description
1 Data Carrier Detect (DCD) (not used)
2 Receive Data (RD) (output from PC/PPI
cable)
3 Transmit Data (TD) (input to PC/PPI
cable)
4 Data Terminal Ready (DTR)
5 Ground (RS-232 logic ground)
6 Data Set Ready (DSR)
7 Request To Send (RTS) (not used)
8 Clear To Send (CTS) (not used)
9 Ring Indicator (RI) (not used)
RS-232 Remote Connector Pin-out
Pin Number Signal Description
1 Data Carrier Detect (DCD) (not used)
2 Receive Data (RD) (input to PC/PPI
cable)
3 Transmit Data (TD) (output from PC/PPI
cable)
4 Data Terminal Ready (DTR)
5 Ground (RS-232 logic ground)
6 Data Set Ready (DSR)
7 Request To Send (RTS)
(output from PC/PPI cable)
8 Clear To Send (CTS) (not used)
9 Ring Indicator (RI) (not used)
1
1
1
2
2