No problem with the enumerations of Drivers of Instruments

I noticed in the National Instruments standard guidelines driver whenever a reference to a control that would have different options based on the test came, a ring selector was recommended and a listing... Is there a good reason to stick with the selectors to ring and not use enum? For example, one of my drivers has 4 different channels CH1, CH2, CH3, CH4... An enumeration settle well here because I can use value of the text-based config file format and create the appropriate enumeration value I want.

"CH1" (text)--> form to value--> CH1 (enum value)

Thanks for your help

Are you referring to this document: http://zone.ni.com/devzone/cda/tut/p/id/3271 ? There is no explicit mention on is not the use of an enumeration. I think that it is essential to use some for control menu to facilitate the selection of the function. In some cases, a ring can be more convenient than an enum. For example, if a selection requires the actual value to be something other than the normal value of the control. Example, the selection of "DC" requires sending a value of 101 to the instrument instead of 0. In this case a ring would be more convenient because you can set values for the elements of the non-sequential ring.

Tags: NI Software

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