Aim of SUB(AI_02_4, 2372) without output assignment.

bouzi

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Apr 2015
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Hi, every one.
I get this program and I want to know the aim of the SUB function without output variable assignment.

SUB(AI_02_4, 2372)


knowing that the adresse of AI_02_4 is : %IW\2.2\1.6.4.0:
AI_02_4: Anaolg input from rack 2 module 4.
I am using UNITY PRO XL 4.0
 
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