Constant: Numeric Numeric values can be binary, octal, decimal, and hexadecimal numbers. If an integer value is not a decimal number, then you must write its base followed by the number sign (#) befor

Constant: REAL, LREAL You can specify floating-point numbers as REAL and LREAL constants either in decimal notation or exponential notation with mantissa and exponent. The decimal point serves as the

Operator: TEST_AND_SET The multicore operator is an extension of the IEC 61131-3 standard. The operator can be used for implementing a semaphore, for example to guarantee exclusive access to a variabl

Operator: Global Namespace The operator is an extension of the IEC 61131-3 standard. An instance path which begins with a dot . always opens a global namespace. If there is a local variable that has t

Operator: Namespace for Global Variable Lists The operator is an extension of the IEC 61131-3 standard. You can use the name of a global variable list (GVL) as a namespace identifier for the variables

Operator: Library Namespace Syntax: <library namespace>.<library POU identifier> Example: LIB_A.FB_A A library POU identifier is appended with the library namespace (as a prefix separated by a dot) fo

Operator: Enumeration Namespace The operator is an extension of the IEC 61131-3 standard. You can use the TYPE name of an enumeration for unique access to an enumeration constant. In this way, you can

Operator: __POOL The operator is an extension of the IEC 61131-3 standard. The operator is used to reference objects which are managed in the global POU pool (in the POUs view). The operator directly

Operator: INI Tip The INI operator is an operator of CoDeSys V2.3 . This operator is replaced by the FB_Init method as of CODESYS V3. However, you can still use this operator in projects that are impo

Operators for type conversion Important The rounding logic for borderline cases depends on the target system or the FPU ( Floating Point Unit ) of the target system. For example, a value of -1.5 can b