Applies To:
  • CitectSCADA 3.xx, 4.xx, 5.00
Summary:
I'm using Citect with a Bailey DCS which requires one Citect Variable Tag to write to, and one Citect Variable Tag to read from a Bailey variable. How can I use a slider to write-only to a variable tag? 

Solution:
The Slider property of objects is used to write and read from the same variable tag. To avoid reading from the tag when using a slider, you need to create a memory-based tag and use that tag as the slider tag. In the Input (Touch) command for the same object, define an Up action to pass the value of the memory-based tag to the physical variable tag. 
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