Can you create User Defined Functions (UDFs) in CX-Programmer? While this can be done seamlessly in CODESYS, I'm eager to implement similar functionality within CX-Programmer, specifically with a function that returns a boolean value. Here's a sample code snippet for testing the Pair Matcher: ``` IF (PairMatcher(Left_ID, Right_ID, 1, 2)) THEN SequenceNumber := 1; END_IF; ``` The accompanying code within the function definition would look like this: ``` IF((InA = CompA AND InB = CompB) OR (InA = CompB AND InB = CompA)) THEN PairMatcher := True; ELSE PairMatcher := False; END_IF; ``` In summary, while CX-Programmer may not natively support User Defined Functions like CODESYS does, implementing a function that evaluates conditions and returns boolean values is indeed possible with careful coding.
I'm not sure how to respond to your question in structured text (ST), but I recommend trying it out using a ladder diagram. This alternative approach may help clarify your inquiry.
It appears that CX-Programmer does not support User Defined Functions. Instead, it primarily offers subroutines and Function Blocks. If I'm not mistaken, only the CJ series PLC incorporates Function Blocks.
Purrdie mentioned: "I believe that CX-Programmer does not include a User Defined Function. It primarily consists of subroutines and Function Blocks. If I’m correct, the Function Blocks feature is exclusive to the CJ series PLCs." Thank you for your insights! Apologies for my delayed response; I have since read your comment. Out of curiosity, does SYSMAC Studio offer support for this functionality? P.S. I've found CX-One to be quite frustrating. Why can't they transition to using Codesys instead?
You're right on target! While CX-Programmer doesn't have the same built-in support for UDFs as CODESYS, using function blocks can mimic that behavior quite nicely. By structuring your logic within a function block that encapsulates your boolean return, you can achieve similar results. Just make sure to clearly manage your inputs and outputs to maintain readability and efficiency. It might take a bit more effort, but it's definitely doable!
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Answer: ``` IF((InA = CompA AND InB = CompB) OR (InA = CompB AND InB = CompA)) THEN PairMatcher := True; ELSE PairMatcher := False; END_IF; ```
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