collect data from Siemens S7-300 PLC

i am working on scada system with pc (wincc flx rt) connected with 4 plcs Siemens S7-300 via Profibus with Cp5611 card. knowing that i don't have access to PLC (password protected). how can i collect data from this PC and keep every thing working as it is.
* can i configure new connection to OPC server without changing the current connection configurations?

* can i make filter driver to read directly from CP5611. and how can i find the main driver APIs?

* can i read directly also from WinCC Flexible RunTime Database.

or u have any new solution PLZ help

I think the easiest is to use the HMI - if you have access to the WinCC Flex RT project. You can install and configure SQL Express which is free and log tag values to the database and then display with your preferred method. I used php

Hmm

Maybe I am talking over my head, but... I think if you know where the data you need is located that it can be done without the original integrated project. You make a WinCC Flex RT stand-alone project, make a configuration that polls to the right data (DB's, inputs, whatever) with a certain aquisition time. I didn't test this, but I believe it should work.

almohanned said:

i am working on scada system with pc (wincc flx rt) connected with 4 plcs Siemens S7-300 via Profibus with Cp5611 card. knowing that i don't have access to PLC (password protected). how can i collect data from this PC and keep every thing working as it is.
* can i configure new connection to OPC server without changing the current connection configurations?

* can i make filter driver to read directly from CP5611. and how can i find the main driver APIs?

* can i read directly also from WinCC Flexible RunTime Database.

or u have any new solution PLZ help

Click to expand...

@ELake20: thanks for help. but unfortunately i don't have the WinCC Flex RT project.

@Combo: it sounds good, but am very new to Siemens software so i don't know if i can make my own WinCC Flex project that can run beside the already running one. all i know that runtime loader can only run one project. if this is possible plz tell me.

nahh

Nahh...
It is possible to run a second WinCC Flexible Runtime with VMware. 2 Flexible Runtime's can run next to each other if they are both running from a seperate Operating system. I've tested this after I got this info from JesperMP and I must say, this works perfectly !!!

You don't need to be a specialist in programming to achieve something with wincc flexible. If you know where you're data is located in the PLC, then you can do a lot allready. In your case you won't be working integrated, so you'll have to give the data manually, not with symbols. For example: DB1.DBD10.

With Data logging you are allready doing historian !!

almohanned said:

@ELake20: thanks for help. but unfortunately i don't have the WinCC Flex RT project.

@Combo: it sounds good, but am very new to Siemens software so i don't know if i can make my own WinCC Flex project that can run beside the already running one. all i know that runtime loader can only run one project. if this is possible plz tell me.

Click to expand...

Combo i don't know how to thank you about this. i've just read your thread with JesperMP and this sounds perfect for me. i ll try it out. thanks again combo