Controllogix addressing

[GCBAutomation]

Hi... dumb question: if I scale an analog input in the module properties, do I need to create a new tag or can I just use the controller tag for that module input... thanks...

 

[Ken Roach]

In general, you just use the ordinary Input data tag, since it contains the scaled result value you want.

Another common technique is to make a tag with a purpose-specific name, and make it an Alias to the Input data tag.

That way in the rest of your program you can reference "SandPounder_Thrust_Bearing_Temp" instead of Local:1:Input.Data[0].

 

[rdrast]

Or, aside from an alias as above, dedicate a specific routine just to scanning inputs, and copy the tag to an internal value.


I find this the best, as for testing, even without IO, you can just not scan that input routine, and manually set all values however you like.

 

[GCBAutomation]

Thanks...

 

[Firejo]

SandPounder_Thrust_Bearing?