Hello all

I'm simply looking to check if three bits in a word are all true. My code goes something like this:

If SmartTags("Tag").9 AND SmartTags("Tag").6 AND SmartTags("Tag").7 Then

- do something

End if

Where "Tag" is an UInt. How to address the bits such as bit 9, 6 and 7?

Also. Will this code require a "trigger" such as "Tag".OnChange (format of course not correct) or will it continuously be run?

Platform: TIA v14 Advanced

Hi,

Code will be something like that

If SmartTags("Tag").value & 16#2C0 = 16#2C0 Then

- do something

End if

I believe I found the solution myself, at least no errors are found when I check the script syntax.

The working syntax goes like this:

Geef

I don't think that will do the trick, as I am not looking to check the word for a given value but the three specific bits individually of what the others bits in the word are.

 With my solution, you only test the 3 bits you mentioned and other bits are ignored. It's a programming trick.

As you can see from attached image the suggested syntax is not working.

I also tried with my own solution but that didn't help either.

So my question still stands: How do I access a single bit of a word (type: UInt)?

Hi,

2C0h = 704d so you can extrapolate :

If SmartTags("Tag").value & &h2C0 = &h2C0 Then

- do something

End if

or

If SmartTags("Tag").value & 704 = 704 Then

- do something

End if

I tried that as well but still with no luck. Here is my code in its entirety:

Sub StatusCheck()

If SmartTags("Properties\Sts01").Value & 704 = 704 And SmartTags("Properties\TabIndex") = 0 Then

SmartTags("hmi_OpenEnabled") = True

Else

SmartTags("hmi_OpenEnabled") = False

End if

End Sub

I can make it work if I only consider the TabIndex, so the error can be pinpointed to reading the status word only.

Attached image illustrates the actual value of the status word.

Addition: I am creating the faceplate as a type in the project library and then use it in the project as a pop-up screen. Values are loaded through use of multiplexing (index is assigned when pressing a valve icon) - I don't know if this has any influence on my trouble with this.

I finally made it work!

I was simply missing a few parentheses and a "And" instead of "&". The working code looks like this: