Siemens Simovert Masterdrives Compact Plus Series Operating Instructions Manual page 193

Connecting-up
X103 - Serial
interface
5
9
6
1
7-14
It is possible to connect either an OP1S or a PC with RS232 or RS485
serial interface via the 9-pole SUB D socket. There are different
connecting cables for the PC for the various transmission protocols.
The 9-pole SUB D socket is internally coupled with the USS bus, thus
enabling data exchange with other nodes linked via the USS bus.
This interface is also used for loading software.
Pin Designation
1 RS232 ID
2 RS232 RxD
3 RS485 P
4 Boot
5 M5 AUX
6 P5V
7 RS232 TxD
8 RS485 N
9 M_RS232/485
Table 7-8 Serial interface
Meaning
Changeover to RS232 protocol
Receive data via RS232
Data via RS485 interface
Control signal for software update
Reference potential to P5V
5 V aux. voltage supply
Transmit data via RS232
Data via RS485 interface
Digital ground (choked)
Operating Instructions
06.2006
Range
Low active
RS232
RS485
Low active
0 V
+5 V, max. 200 mA
RS232
RS485
6SE7087-6KP50 Siemens AG
SIMOVERT MASTERDRIVES