11/6/2020 3:19 PM | |
Joined: 9/27/2006 Last visit: 9/23/2024 Posts: 12282 Rating: (2685)
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Hello Dan; Actually, the local stack (where the TEMP variables are located) is a shared, unique area of system memory on the CPU, for all the FCs and FBs of your Step 7 program (be it Simatic Manager or TIA Portal). As soon as another FC or FB is opened, the TEMP variables of the new block overwrite the values of the the old block (since they occupy the same memory area). This is best explained in this document (for TIA portal, but applicable to Simatic Manager as well): https://support.industry.siemens.com/cs/ww/en/view/48815048 Static local data in FBs
Temporary local data in FBs, FCs and OBs
Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 11/06/2020 15:20:50 |
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