Operator: INDEXOF The operator is an extension of the IEC 61131-3 standard. Instead of the INDEXOF operator, the ADR operator is provided in CODESYS V3 for getting a pointer at the index of a POU. :

ARRAY[0..4] OF INT

yields 0, the output

1; otherwise 0

. When both inputs yield 1 or 0, then the output yields 0

such as IF (ptr <> 0 AND

Operator: OR_ELSE The operator is an extension of the IEC 61131-3 standard. The OR_ELSE operator is permitted only for programming in structured text: OR operation of BOOL and BIT operands with short-

Operator: SHL The IEC operator is used for bitwise shift of an operand to the left. erg := SHL (in, n) in : Operand which is shifted to the left n : Number of bits to shift in to the left Important If

Operator: SHR The IEC operator is used for bitwise shift of an operand to the right. erg := SHR (in, n) in : Operand which is shifted to the right n : Number of bits to shift in to the right Important

Operator: ROL The IEC operator is used for bitwise rotation of an operand to the left. Permitted data types: BYTE , WORD , DWORD , LWORD erg := ROL (in, n) CODESYS moves in n-times one bit to the left