Global and local labels have the following differences.
Global Label
・This label is available to all programs in the project.
・You can also allocate any device.
Local Label
・The label is available only for each program part.

In addition to global and local labels, the following labels are also available.
Module Label
・This label is defined for each module. It is automatically generated when each module is used on GX Works3 and can be used programmatically as a global label.

System Label
・The label can be shared among iQ Works compatible products. By registering a global label as a system label, you can use the system label to read from the GOT.