9/23/2009 2:31 AM | |
Joined: 10/7/2005 Last visit: 6/6/2023 Posts: 2966 Rating:
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Dear all the "problem's" you face are perceived problems and can easily be solved in a number of ways. 1.) This FAQ explains how "grab" online DB's: How can you back up the actual values of DBs and bit memories? 2.) An alternative way to the above one is to do this: a.) Open the DB offline b.) Click on the "Open Offline/Online Partner" shortcut icon (third icon from the left)and open the online DB. c.) Click on the "Save" shortcut icon to save the current online actual values as the offline actual actual values 3.) As for uploading logic Blocks (i.e OB's, FC's & FB's) from the PLC, this is something I wouldn't do, but instead make sure my offline logic blocks are up to date (and achieve this by making sure to always change the logic offline followed by asaveand download). You can easily verify if the offline logic Blocks are the same as the online ones via an offline/onlinecomparison. To do so, right click on a block (or a number of Blocks) and select "Compare Blocks.."(useF1 while your mouse cursor is over the "Compare Blocks.."line to get the inbuilt help for it). If the offline logic is up to date there is obviously no need to upload it from the PLC. If differences exist, Step 7 will very neatly display these which helps in fixing them up. Lastly, doing the whole "Upload Station to PG.." will simply create a pure online logic/data "snapshot" which is not all that useful for further editing (as you know you won't have symbols nor comments). It can however be useful to create for example an emergency recovery backup. I always do so as the first step if I have to work on "someone elses"S7 on site somewhere to be able to "roll back" if need be. Ihope this helps |
Cheers |
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