11/24/2010 6:34 PM | |
Posts: 947 Rating: (45) |
Use Uninterruptible Copying of Variables with SFC 81 "UBLKMOV" |
11/24/2010 7:13 PM | |
Posts: 21 Rating: (0) |
thanks what about SFC14 and SFC15.Do they have same limitations? |
11/25/2010 3:31 AM | |
Joined: 10/7/2005 Last visit: 9/20/2024 Posts: 3021 Rating: (1054)
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Hello nimalak it is absolutely true, higher priority Interrupts "interrupt" the lower priority program at any point. What this means is that a cyclic Interrupt OB can (and will) for example "kick in"after the LOAD command, do what it has to do and your program will then resume with the TRANSFER command. This is "totally normal behaviour" though andNOT something to be "scared" off. Step 7 will make sure to save and memorise all important information (e.g. Accumulator contents, DB registers, AR1 & 2 contentsetc.) in the Interrupt stack (see HERE for more on this). You can nonetheless disable and/or delay Interrupt processing should you wish to do so via SFC39 - 42 (see their <F1> help for more on them). I hope this helps |
Cheers |
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