Direct memory access with TCP connection to Siemens PLC without Send/Rec Block

[hjalle]

Hi,
I successfully connected to a S7-1200 and can send receive data between the computer and the PLC by using the send/receive blocks.

Now, I wonder if it is possible to directly read/write to the PLC memory without these blocks. The benefit with this would be a lot less work with the PLC ladder programming.

Thanks

 

[hjalle]

Any ideas?

Any ideas?

Thanks!

 

[TurpoUrpo]

Well i think it is not so easy to do, when you consider what, and how tcp/ip work.

 

[SteveMaves]

I think there are hardware and software solutions for S7-300 and 400, but my understanding is that the 1200 is programmed with different software, so I don't know if it's TCP/IP protocol is compatible or not?

In this post, comment #14, there's a user that has figured out how to do this...
http://www.plctalk.net/qanda/showthread.php?t=52345&highlight=beckhoff+siemens

Otherwise, IBHSoftec has some hardware solutions...
http://www.ibhsoftec-sps.de/english/Product_selection.htm