marsu1821

I have some difficulties to find few CMS component references. Anybody could help me? I tried to draw it with paint.exe and you could find an attached picture to this message named u1.bmp ... thank you very much for advance...

I use Siemens memory card MMC to transfer data between a computer and a S7 300. I would like to use standard MMC but it seems that is not possible because of formatting differences. So, anybody would have information about these two formatting sequences? Thank you for advance.

alright thank you for this datasheet i tried to find it but it is a too difficult web site (siemens)due to the links number. i will try to do the same schematic with all the informations i have and the cable circuit board. thank you again

In a RS232 - RS485 converter cable for PLC of Siemens, there is a baud rate control. Anybody can explain me the baud rate control useful please? Thank you for advance

Anybody know this component: 21AL2594? I think it is a national semiconductor component and so I have already asked them, but they didn’t find it in their database. Thank you very much for advance

Anybody could explain what is the difference between S7 200 cable and S7 300 cable for S7 Siemens PLC? I know these two cables must convert data signals from computer (RS232) to PLC (RS485) in order to program PLC...but I don't understand why they are different in the catalog... Thank you for advance

I am student and I have to analyse a S7 200 programing cable. I tryed to look after the circuit board butu components and track are too little for my eyes, even if I use a magnifier. So, I am looking for the complete S7 200 programing cable schematic. If anybody can help me.... thank you for advance