Does anyone out there have any info on on programming S7-300 remotely with modems or linking together multiple S7-300 processors on a MPI network? How do you structure messages?

 

Second, if you want to programm through a modem link, I suggest you buy Siemens Teleservice program and TS adapter. Expensive, but it is the only thingg that works through dial-up with S7-300.

Hope this helps,
Daniel Chartier

 

Hi,

To reach S7 PLC by modem and program it you could use Siemens product called Teleservice (if I remember well the name). To carry out comms between S7-300 PLCs: give to them different MPI
addresses, connect their MPI ports with the Profibus cable/plugs and look for the GD (Global Data) communication topic in the Step 7 online help - simplest solution if you do not need to send much data. More advanced is usage of the S7 system functions. Look for them in "STEP 7
- System and Standard Functions for S7-300 and S7-400" manual.

Regards,

Jacek Dobrowolski, M. Sc. E. Eng.
Software Eng.

 

Hi

Siemens have a product called Teleservice which uses a modem and Teleservice adapter to connect to PLC's on an MPI network.

Andrew

 

If you want to connect a PC based on Windows to the MPI/Profibus Network you must use the Siemens Communication Processors and the Prodave library. To access remotely with a modem to the MPI/Profibus Network you must use the TSN Adapter. More informations on the Siemens web site.

 

Follow this link to Siemens automation support.

http://www4.ad.siemens.de/csinfo/li...&aktprim=0&lang=en&siteid=csi&nodeid0=4000024

You may have to rebuild the URL. There are many ways to setup inter-processor communications. This link is to a manual on Sematic communication:
http://www4d.ad.siemens.de/skm/fram...uct Information&searchID=1038653455&smart-id=

I use S7 for interprocess communications but you may find global data will meet your needs.