Compiler Error C0094 Message : Interface of overridden method '<method name>' of interface '<function block name>' doesn't match declaration Possible error cause : The signature of the method of the f

Compiler Error C0175 Message : 'RETAIN' or 'PERSISTENT' not allowed in this place Possible error cause : 'RETAIN' or 'PERSISTENT' is used in a function. Error correction : Use 'RETAIN' or 'PERSISTENT'

Compiler Error C0177 Message : '<object>' is of type '<type>' and cannot be instantiated Possible error cause : An attempt is made to instantiate a function. Error correction : Instantiate only object

Object: Network Variable List (Receiver) Symbol: The object is used to list the received network variables and display the information: network and transmit information and sender. To add the object t

Object: Persistent Variable List Symbol: The object contains the declaration of global persistent variables in the declaration section VAR_GLOBAL PERSISTENT RETAIN .. END_VAR . The variables are store

Object: POU Symbol: An object of type POU is a "programming organization unit" in a CODESYS project. Source code for your controller program is written in POUs. There are following POU types: Program

Object: Function Block A function block is a POU that yields one or more values when executed. The object is added to the application or the project by clicking Project → Add Object → POU . In the dev

Object: Function A function is a POU which supplies precisely one data element when executed and whose call in textual languages can occur as an operator in expressions. The data element can also be a

Object: Interface Symbol: Keyword: INTERFACE An interface is a means of object-oriented programming. The object ITF describes a set of method and property prototypes. In this context, prototype means

Object: Method Symbol: Keyword: METHOD Methods are an extension of the IEC 61131-3 standard and a tool for object-oriented programming which is used for data encapsulation. A method contains a declara