I need to create a Bool Array that can be read and wrote to with an HMI but i cant figure out how to turn the status variable into a Array. Status Variables have addresses that HMI interfaces can read/write to but global variables do not seem to have an address or at least a known address that can be seen. i can see if i click on Variables i can see array is set to NO but i dont see anywere to toggle this.

Not a clue what you mean. Post your code in code tags. Also maybe consult the Arduino on line documentation and search for array.

You might get an useful answer if you ask an AI How to create a bool array in Arduino PLC that can be changed by HMI Good luck! ec2021

[image] ec2021: ask an AI Wow! After witnessing decades of lousy "AI" I am startng to see a benefit in it. Not to give a turnkey solution, but providing a "gist" of the subjects I need to investigate to create test sub-sketches and build a minimal full-system sketch. I also recognized in the AI response, the poor grammar and slang in the comments, which is warning me the code will also suffer from the AI use of failed skethes in its response. Good luck.

If you use AI you need good luck plus a certain amount of experience and knowledge to evaluate the output... But it might be better to get a more or less close enough starting point rather then having a blank page...

[image] ec2021: need good luck plus a certain amount of experience Yes, I wrote a working sketch, then asked AI to write the same sketch. It missed a lot when using libraries to create objects, and pinouts of boards. It would also un-do lines of code that were good in a "circus clown spinning plates" show. But now I see a different use; that of indicating building blocks that I can investigate without AI.

its not Arduino sketch its the PLC IDE. I need to create a Bool Array on the PLC Side not in sketch code. I can create a Bool Array variable under Global Variables however those do not give the Address of the variable. I’m trying to create the variable under Status Variable Section of the PLC IDE: [image] When you create a variable here it does not give you the option to make it an array. however after you create a variable here you can go to the global variables and see it has Array = no but there doesnt seem to be a way to change this. The variable will be read/wrote to via an HMI Screen over modbus TCP/IP but only Status variables give you the address the variable is located in so you can plug them into a HMI screen so it knows where that variable is. There isn’t any documents on how to get the address of a variable that is created in the global vars section of the PLC IDE it only says automatic and doesnt give the address

How to create an Array

Development Tools PLC IDE

dilberto April 1, 2026, 3:47am 2

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How to create an Array

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