Qualifier for actions in SFC
In order to configure in which way the actions should be associated to the IEC steps, some qualifiers are available, which are to be inserted in the qualifier field of an action element.
These qualifiers are handled by the SFCActionControl function block of the IecSfc.library, which automatically is included in a project by the SFC plug-ins.
The available qualifiers:
以上内容摘自Codesys的Help文档。