Hi to all,

I'm searching a way to do something like that:

PROGRAM PLC_PRG
VAR

    wOutputs :WORD
    iMyBit :UINT;

END_VAR

iMyBit := 2; 

wOutputs.iMyBit := TRUE;

If I try to build this code, the compiler give me errors. Any suggestion to do it?

Thanks to all
Luca

Hi. Use function PUTBIT / EXTRACT from Util library.

Hi,
You can acces a bit into a word (or other type as UINT, INT, ...) only with a direct value, a constant, or a BIT data type into a structure.
Please see : https://help.codesys.com/webapp/_cds_operands_variables_accessing_bits;product=codesys;version=3.5.15.0

For your example, you can write :

VAR_GLOBAL CONSTANT
iMyBit :UINT:=2;
END_VAR

(Program)
wOutputs.iMyBit := TRUE;
wOutputs.5 := TRUE;

BR

Hi,

I'm thinking that putbit function is what I need.

Another question: If I want to use physical address with AT instruction, how can I avoid overlap address? Many PLC have a tool able to show which physical addresses are free o busy. Does codesys too?

Thanks
Luca