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Check values of BOOL[16] [message #1791433]

Fri, 29 June 2018 09:36

Agostino Mascitti

Messages: 15
Registered: May 2018

Junior Member

Hello,

I have a FB that accepts an array of booleans, 16 entries. How can I programmatially check their value (e.g., if MY_Array()[7] == false)?

I tried with the following snippet but it doesn't work. Also, there is no similar example in the current repo, it seems.

if(RESET_Array()[i] == false) {
         x = i;
          break;
        }

Thank you for your support!
Agostino

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Re: Check values of BOOL[16] [message #1791435 is a reply to message #1791433]

Fri, 29 June 2018 09:55

Alois Zoitl

Messages: 1224
Registered: January 2014

Senior Member

Hi,

The syntax for accessing variables and arrays from C++ is not that clear. We had to do here some tricks to make our ST code generation easier. Therefore I can recommend to test such cases in ST generate the C+++ code and look there for reference. Or even better, if possible write your FB's algorithms in ST.

For your example the code would be:

if(RESET()[i] == false) {
  x = i;
  break;
}

Cheers,
Alois

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