Library version

All libraries have a specific version. This version is shown in the PLC library repository too.
A global constant contains the library version information:

Global_Version

VAR_GLOBAL CONSTANT
     stLibVersion_Tc2_Standard : ST_LibVersion;
END_VAR

stLibVersion_Tc2_Standard: version information of the Tc2_standard library (type: ST_LibVersion).

To compare the existing version to a required version use the function F_CmpLibVersion.

Library version 1:

All other possibilities known from TwinCAT2 libraries to query a library version are obsolete!