"Function block call requires an instance" calling an action

2020-02-27T21:56:41.886000Z

and you are also calling this function block twice (that is no good practice, however i do know why as you want the same blockresults.
You may give the values in front of the call.

Especcially when using timers this often is a problem, the compiler does not see these problems.

"Function block call requires an instance" calling an action

2020-02-27T21:56:37.714000Z

I solved the problem.

The problem was that I had a variable in the function block with the same name as the action (variable name was zeroCount, action name was ZeroCount). This confused the compiler, so I renamed my action and now it works.

"Function block call requires an instance" calling an action

2020-02-27T21:56:36.186000Z

Using Codesys 2.3, I'm getting the following error:

"A function block call requires a function block instance."

My call to the function is in a PRG as follows:

PROGRAM TestProgram
VAR
    testFunctionBlock:MyFunctionBlock;
    callAction:BOOL;
END_VAR
testFunctionBlock(inputVar:=1);
IF (callAction) THEN
    testFunctionBlock.testAction();
END_IF;

Any idea why this won't build? The function block is instantiated, so I'm not sure what's going on. I suspect I might be calling the action wrong.

Thanks for any help!

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