kralcccyu

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Posts posted by kralcccyu

  1. Posted

    6 hours ago, pop29684 said:

    I think I understand what you are saying. I don't see the .zip file you included, so I can only guess what it contains. I'm guessing that when it is unzipped and opened you see every station (CPU) in the tree on the left. I'm also guessing that because you see every station in this tree you are lead to believe that the commissioning engineer was able to upload the entire system (multiple stations/CPUs) with a single keystroke. In other words, you have a single project with multiple CPUs. Am I correct?

    That is very correct. I am very glad you understood my question. 

    6 hours ago, pop29684 said:

    The only way I know of is to upload each station individually from it's CPU. These can be collected together and stored in a single project. (The same feature is available in the TIA Portal software.) The benefit of doing this is that all of the CPUs, drives, HMIs, etc., can be kept in a single project, making project management much easier. One project file with 10 CPUs is much easier to track, store, retrieve, and manage than 10 individual project files. It also ensures that when passing the project to another colleague or vendor that there are no inadvertently missing project files.

    I very much agree with you. So, basically what you are saying is that this .zip project file with multiple cpu's can only be made when you have made the project itself and not by uploading from a network? 

    6 hours ago, pop29684 said:

    A word of caution regarding uploads. Remember that in most cases, an upload will not extract symbolic names and symbolic addresses. Nor will it extract network comments. It also destroys any local variable names used in the FB (function block) interface and the associated IDB (instance data block) and replaces them with default identification. All of this lost information can be valuable, and can go a long way in reducing troubleshooting time. Please proceed with caution if you are uploading from the CPU.

    Well noted, sir. Another question is how to download this project file to different CPU's. Please do confirm this procedure clearly as I do not want to attempt doing this at my own understanding as I might be missing out some important points.

    And thank you for taking your time answering my inquiry.

    Best Regards,

     

    Clark

  2. Posted

    Dear All,

    I am very new to S7 PLC programming (S7 Simatic Manager v5.5) and I wanted to know how to back-up a system consisting of multiple PLC Stations (S7-1200, S7-300, etc). I am able to upload station to PG but that will save only per station. How about saving the whole system? I am not sure if i am using the right terminology. As you can see, I was given a zip file for the S7 project and it contains the whole system. I am trying to see how the commissioning engineer was able to do it (don't ask why I am not asking him instead). How can I then use this project file to download the program to the PLC/system once I decide to restore. I am at loss and have been searching for references over the internet. Uploading and downloading per station is no problem. I cannot seem to know how to do it on multiple stations system.

    I hope I have made some clear question or somehow you have managed to understand it. 

    TIA.