Exporting Library Files You can export a library from the Library Manager of a project or from the library repository and then save it as a file to the hard disk. Procedure . Export from the Library M

Updating Library Placeholders If a project uses placeholder libraries, then it can happen that the placeholders can no longer be resolved automatically when they are loaded later. As a result, the loa

Managing Devices CODESYS manages the installed devices in the device repository . A device repository is a defined location in the file system which by default is defined as the system repository for

Operator: __NEW The operator is an extension of the IEC 61131-3 standard. The __NEW operator reserves dynamic memory to instantiate function blocks, user-defined data types, or arrays of standard type

Operator: __QUERYINTERFACE The operator is an extension of the IEC 61131-3 standard. At runtime, the operator executes a type conversion of an interface reference into another type. The operator retur

Operator: __QUERYPOINTER The operator is an extension of the IEC 61131-3 standard. At runtime, the operator makes it possible to convert the type of an interface reference of a function block to a poi

Operator: __TRY, __CATCH, __FINALLY, __ENDTRY These operators are extended from the IEC 61131-3 standard and they are used for specific exception handling in IEC code. Syntax __TRY <statements_try> __

Operator: __VARINFO The operator is an extension of the IEC 61131-3 standard. The operator yields information about a variable. You can save the information as data structure in a variable of data typ

Operator: __COMPARE_AND_SWAP 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 v

Operator: __XADD The multicore operator is an extension of the IEC 61131-3 standard. The operator can be used for implementing an atomic counter. If an integer variable is incremented by means of ordi