Library version
All libraries have a certain version. The version is indicated in the PLC library repository, for example. A global constant contains the information about the library version:
Global_Version
VAR_GLOBAL CONSTANT
    stLibVersion_Tc2_Coupler : ST_LibVersion;
END_VARName  | Type  | Description  | 
|---|---|---|
stLibVersion _Tc2_Coupler  | ST_LibVersion  | Version information of the Tc2_Coupler library  | 
To check whether the version you have is the version you need, use the function F_CmpLibVersion (defined in the Tc2_System library).
![]()  | All other options for comparing library versions, which you may know from TwinCAT 2, are outdated!  | 
