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- Knobs app can't set non-EPICS devices (eg correctors), so;
- In "drilldown" mode it offers you devices to set that it can't in fact set (eg having selected BX02 TO QM15, you select Y corrector YC21303 (which is in fact an SLC CS corrector), select FieldSet (whch you shouldn't have been able to do) and then it can't connect.
WORK AROUND: Be conscious of what's SLC and what EPICS. See resources 0,1. - It makes bumps using correctors it can't set.!
Eg: Select sequence indexes 2,3,4,5. Make Vertical design offset knobs. The first knob created is BPM21301. This contains 3 correctors, all SLC! Eg YXC21303 - YCOR:LI21:303. So, knob can't be implemented. This problem seems particularly acute for Vertical bumps! Are more of our horizontal correctors EPICS?
NO work around. Will have to fix so that that elements which are not settable are not included.
- In "drilldown" mode it offers you devices to set that it can't in fact set (eg having selected BX02 TO QM15, you select Y corrector YC21303 (which is in fact an SLC CS corrector), select FieldSet (whch you shouldn't have been able to do) and then it can't connect.
- Knobs->"Proprotional Coefficients" spelt wrongly.