Siemens OSM User Manual Page 141

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Connecting a PC with Hyperterminal to the Serial Port of the OSM/ESM
B-2
Industrial Ethernet OSM/ESM Network Management
C79000-G8976-C137-08
You require a PC with the Hyperterminal program (available with Windows 95/98
NT/2000 in Programs -> Accessories) if you want to download the OSM/ESM
firmware via the serial port or want to use the command line interface (CLI). Follow
the steps outlined below to connect a PC with the Hyperterminal program to the
OSM/ESM:
Connect the serial interface of your PC and the OSM/ESM with a normal null
modem.
Depending on the port of the PC that you are using, you require a cable with a
9-pin or 25-pin sub-D female connector for the PC end, and a 9-pin female
connector for the OSM/ESM end.
Table B-1 below shows the pinning and connection of the two cable variants.
Table B-1 Pinning and Connections
PC port
25-pin
female
9-pin
female
Connected
to
OSM connector 9-pin
female
Signal name Pin Pin Pin Signal name
TD
(Transmit Data)
2 3
___________ 2 RD
RD
(Receive Data)
3 2 ___________ 3 TD
RTS
(Request To Send)
4 7 ___________ 8 CTS
CTS
(Clear to send)
5 8 ___________ 7 RTS
SG
(Signal Ground)
7 5 ___________ 5 SG
DSR
(Data Set Ready)
6 6 ___________ 4 DTR
DTR
(Data Terminal
Ready)
20 4 ___________ 6 DSR
Note
Please note that the serial port on some SIMATIC programming devices is a
25-pin female connector. If this is the case, use a gender changer (25-pin male to
25-pin male) available from PC dealers.
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