You're reading the documentation for an older, but still supported version
(GL013300).
For information on the latest version, please have a look at GL013301.
For information on the latest version, please have a look at GL013301.
1.4.1 Version
The real-time external control version is managed according to the input/output data structure version. Although each input/output data structure may change as the SW version increases, backward compatibility is supported by matching the I/O data version developed by the external controller.