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#Opening a Save Set (Snapshot)
#Filtering - Select Area and Select Subsystem areas
#Filtering - Signal Name Filter
#Select All / Display Selections Buttons
#Snap n Save All - Create a save set (snapshot) of the machine
#Compare to an existing save set (snapshot)
#Load an existing save set (snapshot)
#Activate an existing save set (snapshot)
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Once a save set is selected and opened, you can edit the comments by typing in the text area and save via the "Save Comments" button. You are prompted for the initial comment when you "Snap n Save All".
Filtering
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- Select Area and Select Subsystem areas
Once a save set is selected and opened, you can select the portion of data you wish to display. If you want to see everything, click the select all button near the bottom left corner. Alternatively you can select only the systems and subsystems you are interested in and then click the "Display Selections" button near the lower left corner. A separate tab (and table) is created for each selected system being displayed. (Note that a "Snap n Save" operates on all signals, whether they are being displayed or not.)
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For each table row, there is a column for:-
- Subsys - each subsystem is listed with a blank row. Shared with Madname, if any
- * Name - EPICS Signal name, without attribute. (Note equivalent SLC magnet names, for reference, would have IM20 versus IN20, LM21 versus LI21, etc)-
- DES Save Val -the setpoint saved value in bold. The next three live value columns and following ACT Save Val column are compared to the DES Save Val.
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- CON Live Val - the Configure setpoint live value (for magnets); brown unless differs from threshold, then red
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- DES Live Val -the setpoint live value; blue unless differs from threshold, then red
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- ACT Live Val -the readback live value; green unless differs from threshold, then red
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- ACT Save Val -readback saved value; olive unless differs from threshold, then red
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- Three more columns naming the setpoint (DES), readback (ACT) and configure (CON) attribute names. These attribute names can be appended to the Name, separated by ":" to form a complete EPICS name.
Generally, associated setpoint and readback PVs will be associated on the same row, but it is possible to have table rows with setpoint only.
Table display behavior / threshold
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If a readback value is more than a user settable fraction different from the saved value, it is displayed in red. Here is the equation for threshold comparisons: ratio = value/DES Save Val; if (ratio > 1 + threshold value) or if (ratio < 1 - threshold value), display red. The live value displays are updated at 0.5 Hz for EPICS values and 0.25 Hz for SLC magnet values.
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