[SOLVED] Combining four 16 bit UINT to one 64 bit UINT in Codesys

Combining four 16 bit UINT to one 64 bit UINT in Codesys

I'm trying to combine four 16 bit UINT to a single 64 bit UINT in codesys. I am able to do this in C but I haven't been able to figure out the syntax in Codesys. I have four elements of an array that are 16 bit UINT values.

If anyone knows a way to combine these please let me know. Thanks a lot.

VAR
     // Array
     UTCdataArray : ARRAY [0..3] OF UINT;     

     //16 bit UINT elements
     UTCval0: UINT := 0;
     UTCval1: UINT := 0;
     UTCval2: UINT := 0;
     UTCval3: UINT := 0;

     // 64 bit ULINT
     UTCval: ULINT := 0;
END_VAR


// 16 bit UINT array
UTCval0 := UTCdataArray[0];
UTCval1 := UTCdataArray[1];
UTCval2 := UTCdataArray[2];
UTCval3 := UTCdataArray[3];

// Combine 16 bit UINT array elements into 64 bit ULINT

//This is something I would do in C
UTCval := UTCval0 << 0;
UTCval := UTCval1  << 16;
UTCval := UTCval2  << 32;
UTCval := UTCval3  << 48;

Solution

I think bit shift left (SHL) is what you're looking for.

UTCval := UINT_TO_ULINT(UTCval0) + SHL(UINT_TO_ULINT(UTCval1),16) + SHL(UINT_TO_ULINT(UTCval2),32) + SHL(UINT_TO_ULINT(UTCval3),48);