The Takstein

Hi all!

Been picking my brains of some elegant way of combining two BYTEs to an INT, anybody got an idea?

I have two BYTES ( a low byte and high byte) that i receive from the DP bus. These I want to combine in SCL. BYTE_TO_INT would only work for one of the bytes.

I'm sure i can work around it but it would be a bit messy.

Hope anybody has any ideas about this!

regards,
Takstein

VAR_OUTPUT
"WordOut" : Word;
"b_s" AT "WordOut" : Struct
"hiByte" : Byte;
"loByte" : Byte;
END_STRUCT;
END_VAR

BEGIN
#b_s.hiByte := #hiByte;
#b_s.loByte := #loByte;

END_FUNCTION_BLOCK

That said, the much easier way is to simply assign the bytes to the integer tag directly.

Let's say byte 1 => b0, and byte 2 => b1 (hi and lo bytes respectively), and your integer is int1.

int1.b0 := b0;
int1.b1 := b1;

Now int1's bytes are assigned the values. This can be done in ladder with two MOVE instructions.