Rs-232/Ppi Multi-Master Cable - Siemens SIMATIC S7 System Manual

A.11.2.2

RS-232/PPI Multi-Master Cable

Table A- 164 RS-232/PPI Multi-Master Cable - Pin-outs for RS-485 to RS-232 Local Mode Connector
Pin Number
Pins 4 and 6 are connected internally.
1
Table A- 165 RS-232/PPI Multi-Master Cable - Pin-outs for RS-485 to RS-232 Remote Mode Con-
Pin Number
A conversion from female to male, and a conversion from 9-pin to 25-pin is required for modems.
1
Pins 4 and 6 are connected internally.
2
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
RS-485 Connector Pin-out
Signal description
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
nector
RS-485 Connector Pin-out
Signal Description
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
A.11 S7-200 SMART cables
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 Num- Signal Description
ber
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)
Technical specifications
1
1
1
2
2
781