6/1/2017 11:51 AM | |
Joined: 1/28/2009 Last visit: 5/2/2024 Posts: 6838 Rating: (1359)
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Dear user,
Your program may include only OB1 but it doesn't react to external-internal events very well.Program initialization in case of mode change from Stop-->Run, execution of program in a constant sample rate and reaction to missing hardware. Just to add extra information:
I hope it helps, hdhosseini |
Last edited by: hdhosseini at: 6/1/2017 12:01:01 PM |
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This contribution was helpful to2 thankful Users |
6/1/2017 12:35 PM | |
Joined: 8/1/2016 Last visit: 4/17/2024 Posts: 157 Rating: (5) |
Thanks to you all.. The information is very helpful... |
6/1/2017 3:13 PM | |
Joined: 12/9/2010 Last visit: 10/8/2022 Posts: 623 Rating: (76) |
Hi @success, OB by definition is interface between user program and CPU OS. Different OBs are called depending upon diffrent events e.g. at defined time intervals (OB3x), hardware fault, program error etc. So it gives us opportunity to react to certain problems and so we come to know cause of error. Above mentioned manuals will give u in details info. about various OBs. |
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