PLC Programming

Bitstring Operators...
LD ivar1
MOVE ivar2
ST ivar2 (* result: var2 erhält Wert von var1 *)
( ! you get the same result with:
LD ivar1
ST ivar2 )
Example in ST:
ivar2 := MOVE(ivar1);
( ! you get the same result with: ivar2 := ivar1; )
INDEXOF
This function is not prescribed by the standard IEC61131-3.
Perform this function to find the internal index for a POU.
Example in ST:
var1 := INDEXOF(POU2);
SIZEOF
This function is not prescribed by the standard IEC61131-3.
Perform this function to determine the number of bytes required by the given data type.
Example in IL:
arr1:ARRAY[0..4] OF INT;
Var1
LD
SIZEOF
INT
arr1
ST Var 1 (* Result is 10 *)
Example in ST:
var1 := SIZEOF(arr1);
10.2 Bitstring Operators...
AND
Bitwise AND of bit operands. The operands should be of the type BOOL, BYTE, WORD or DWORD.
Example in IL:
Var1 BYTE
LD 2#1001_0011
AND 2#1000_1010
ST Var 1 (* Result is 2#1000_0010 *)
Example in ST:
10-4 CoDeSys V2.3