Codesys - Convert byte to outputs

[kallamamran]

Hello experts

I'm new to Codesys (3.5) and I am trying to make a program which takes a number 1-50 (read from some tags UID) and outputs each bits status to output %QX1.0 - %QX1.7

Can anyone please help? I know it should probably be quite easy, but I just can't find out how...

Best regards // Johan

 

[boneless]

I am not a 100% sure about this, but lets assume your number is in memory %MW0, have you tried moving that directly to your output? QW0 := MW0?

If that won't work. Can you access the bits in MW0 individually by using MX0.0?

 

[kallamamran]

I am not a 100% sure about this, but lets assume your number is in memory %MW0, have you tried moving that directly to your output? QW0 := MW0?

If that won't work. Can you access the bits in MW0 individually by using MX0.0?

Hi boneless,

I have not tried that. I do have the read value in a variable and was thinking about using that to configure the output.
I am actually programming at home now without access to the hardware, so I'm trying to get as much info and as much done as possible before going back into office tomorrow.
I'm sure there's a way to extract the boolean value of the bits to use for the outputs and I really hope you're correct. That would save me a lot of time

 

[boneless]

Did you know you can set up a Raspberry Pi to run CodeSYS? That would be a great test bed for home use .

Let us know if it works and welcome to the forum!

 

[kallamamran]

Did you know you can set up a Raspberry Pi to run CodeSYS? That would be a great test bed for home use .

Let us know if it works and welcome to the forum!

I actually do know or have heard of that. Wouldn't help me much right now though since I would have to fit the program to the hardware at work afterwards anyway

And thank you

 

[Jirrr]

There is Util Library with function BYTE_AS_BIT......

 

[shooter]

yep you can use util and you can use unpack.
have a look at oscat.de for a vast library of functions.

 

[kallamamran]

yep you can use util and you can use unpack.
have a look at oscat.de for a vast library of functions.

There is Util Library with function BYTE_AS_BIT......

I will look into that thanks!

 

[kallamamran]

yep you can use util and you can use unpack.
have a look at oscat.de for a vast library of functions.

Oscat.de is unfortunately in german which makes it kind of impossible for me to navigate :S But thanks

 

[Geoff White]

The Oscat library is also available in English

 

[shooter]

oscat is in english and download the codesys version the manual and also download the text version, that way you have a very nice manual and how it is programmed. It is all open.

 

[kallamamran]

oscat is in english and download the codesys version the manual and also download the text version, that way you have a very nice manual and how it is programmed. It is all open.

Awesome! Will give it another try

 

[Bohardem]

Hi kallamamran,

You can use a bit of the byte by declaring it like this:

By example;
Your variables
Test_byte : Byte ;
Test_output1 :Bool;

Programm
Test_output1 := Test_byte.0 ;
Test_output2 := Test_byte.1;
etc...

The dot and number identified the number of bit of the byte you want to use.

Hope that help you.

 

[kallamamran]

Hi kallamamran,

You can use a bit of the byte by declaring it like this:

By example;
Your variables
Test_byte : Byte ;
Test_output1 :Bool;

Programm
Test_output1 := Test_byte.0 ;
Test_output2 := Test_byte.1;
etc...

The dot and number identified the number of bit of the byte you want to use.

Hope that help you.

Thank you! Makes perfect sense with whats stored in the back of my head from when I attended a short course several years ago

 

[Friedrich]

You can simply declare what byte or word you want to control the outputs in the "I/O mapping list" of the output interface. No need to write any code.