Hello I've been trying to use the DINT_TO_STRING or its alternative DI_STRNG blocks but havent gotten them working in any attempts, for DINT_TO_STRING i get the following error:

Translate: xxxx\TEST\CPU 417-4\Program\Sources\FC225_MDB_DT_UNIXMS_STR
Block: FC225
W: L 00017 C 0001: Cannot find / copy block DI_STRNG

 The code for this line looks like this:

strVal := CONCAT(IN1 := DELETE(IN := DINT_TO_STRING(nowUnix), L := 1, P := 1),
                 IN2 := DELETE(IN := I_STRNG (I := ms),      L := 1, P := 1));

 The weird thing is if i do I_TO_STRING or I_STRNG functions they have no issues, i also see the blocks in the library when i insert block calls

 The entire code looks like this:

FUNCTION FC225 : STRING[16]

VAR_INPUT
  IN : DATE_AND_TIME;
END_VAR

VAR_TEMP
  ms : INT;
  nowUnix : DINT;
  tmpdt : DATE_AND_TIME;
  strVal : STRING[16];
END_VAR
  tmpdt := IN;
  nowUnix := DWORD_TO_DINT(FC224(IN:= tmpdt, ms=>ms));

  strVal := CONCAT(IN1 := DELETE(IN := DINT_TO_STRING(nowUnix), L := 1, P := 1),
                   IN2 := DELETE(IN := I_STRNG (I := ms),      L := 1, P := 1));
  FC225 := strVal;
END_FUNCTION

 I have tried the same setup in TIA portal SCL and it works just fine there with DINT_TO_STRING, which i find super weird it seems like some issue where its not going through my IEC library properly or something

Hi Khasar2,

I recommend using the debugger to analyze how the code is working and see where it is failing:

Check if you have used the FC number 5 in your project. The DI_STRNG from the library has FC 5, thus if you have an FC5 in your project, the compiler can't insert it into you block folder.

What you can do, is to renumber the existing FC5 with a new number (and fix also where it's called. Or you can copy the DI_STRNG manually from the library project into your project. It will ask you if you want to renumber the block, and you can give it a number like FC 1005. Then you should be able to compile the source, and in the compiled code then the FC1005 is called and not FC5.

Thanks for the feedback!