im having problem in communicate the wincc to plc im using the s7 400 how do i link to my plc from wincc to monitor the plant

 

How is your S7 400 CPU connected to the WinCC PC? Is it a single station with a single S7 400 PLC?
This connection might be Profibus or ethernet, and settings in the PC station are made accordingly.
For Profibus coms with the PC, the PC needs a CP (communication processor). For ethernet a LAN card would do.

 

Hello WinCC;

You can link to an S7-400 PLC through MPI, Profibus-DP or Industrial Ethernet. For each you will require some hardware/software driver combination. Look through the WinCC Communications manual (in the chapter on exchanges with S7)or go to the Siemens Support website for more answers:
https://support.automation.siemens....ib.csinfo&lang=en&siteid=cseus&objid=11442502

Once the communication link is determined and installed, you will have to create tags in the appropriate Channel, in Tag Management (or import the symbols from your S7-400 program, that is much shorter than creating new tags). There is much help for these operations in the Online Help of WinCC, by the way.

Hope this helps,
Daniel Chartier

 

What if I use S7-300? Do the same steps apply?

 

Yep, the S7-300 and S7-400 PLCs share the same platform, same operating system, same communication features and the same programming environment.

Hope this helps,
Daniel Chartier

 

Yup.

 

Hello,
I'm still having a communication problem although i've looked at wincc comm manual. i am using a cp-profibus as a medium of comm for wincc to plc via mpi interface. the actual type is cp 5611.once ive configured this cp with the wincc in the pc station setting in the simatic manager, i still can't download the pc station to my plc(s7 300). whereas if im using a plc alone, and by neglecting the wincc, all the harware config and my plc program can be downloaded without any flaws.

so, what is really the solution to the inter-communication between wincc and my plc? bcause i can't link any of the button i've created in wincc although i've tagged them all using correct plc address.

As a reminder, i'm not using wincc as a DCS system, but on the other hand i'm using it for a single mpi scada system with only plc and a pc for an operator station. TQ

 

Ok, what you have to do now is re-check your configuration in the address i/o between the WinCC and the MPI connection.

 

What is the programming requirement in S7 for this communication to be complete?