In our machine, the Siemens S7-400 CPU, OP 37 and field ET 200 modules are connected with Profibus cable. I want to connect my laptop to Profibus port in order to get the PLC ladder programs via Step 7 software.

Thanks.

 

Hi,

Use the MPI/Profibus programming adpator, this is available in USB and RS232 (if you can still get the RS232 version).

 

If you want to use a USB port then you need this device from Siemens:

6ES79720CB200XA0 - SIMATIC S7, PC ADAPTER USB F. CONNECTION OF S7-200/300/400 C7, WITH USB-CABLE (5M) CAN BE USED UNDER WIN 2000/XP

 

The Profibus is a communication on RS 485 port, on laptop you have to search for an MPI/PROFIBUS PCMCIA card adapter. Ex: http://www.mysst.com/cards/profibus/pfbpcm.asp

 

There is a MPI port on the CPU that you can communicate with CPU and uploading the ladder software to PC.

BR,
Vahid

 

Hello,

Here are a few USB-to_Profibus adapters that you can look at:
from Woodhead/SST:
http://www.woodhead.com/products/automation/networkinterface/nic/profibus/

from ABB:
http://library.abb.com/GLOBAL/SCOT/...12572370044B592/$File/63_631-EN-A-12_2006.pdf

and finally from Siemens, of course:
http://support.automation.siemens.com/WW/view/en/16983464

Hope this helps,
Daniel Chartier