Rack Failure
Member
- Join Date
- Jun 2003
- Posts
- 44
Hi all,
I would appreciate if someone out there can clarify when Flags etc are update during scans.
I understand/believe that in S7, at the start of the scan of OB1, the status of the I/P's are mapped. As program is executed the status of O/P's are mapped but not updated until the end of OB1's scan.
Assuming this is correct, when are the Flags (eg M0.0) updated? Is it at time of execution or at end of OB1 scan?
Also in edge detection (one shot) when a Flag is on for one scan, is the Flag on during the scan of execution or is it the next scan.
Any further clarity in this area will be greatly appreciated.
Steveojavascript:smilie('')
wink
I would appreciate if someone out there can clarify when Flags etc are update during scans.
I understand/believe that in S7, at the start of the scan of OB1, the status of the I/P's are mapped. As program is executed the status of O/P's are mapped but not updated until the end of OB1's scan.
Assuming this is correct, when are the Flags (eg M0.0) updated? Is it at time of execution or at end of OB1 scan?
Also in edge detection (one shot) when a Flag is on for one scan, is the Flag on during the scan of execution or is it the next scan.
Any further clarity in this area will be greatly appreciated.
Steveojavascript:smilie('')
wink