1/25/2011 7:56 AM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365) |
Hi Check same issue here. Step 7 OB request error BR |
1/25/2011 8:00 AM | |
Joined: 10/7/2005 Last visit: 9/23/2024 Posts: 3021 Rating: (1054)
|
Hello Jules Stohr Adding OB80 to the PLC will however onlycure the the symptons rather than eliminating thecause for its call, so I would suggest you investigate this abit further (note too that your CPU can still go to stop even with OB80 loaded in it, see OB80 help for more on this). What happens in your case is most likely that the S7 OS will trigger a call to OB35 while the previous call of OB35 is still active (e.g. you have a call rate of 10ms for OB35 but the logic inside OB35 needed more than 10 ms to execute). Solutions in this case are toincrease the call rate of OB35 or to reduce the runtime of the logic inside of it (e.g. optimise the code) I hope this helps and let us know what you find |
Cheers |
|
This contribution was helpful to1 thankful Users |
Follow us on