Depending on the revision number, features supported by GP-3300 series are limited. Please check the revision number on your display unit.
For more details, please refer to the following.
1.5.2.1 For Those Using GP-3000 Series
1.5.2.3 GP-3300 Series - Models That Support Control
Refer to the following for information about the GP-3300 Series Hand-held GP.
1.5.15 Hand-held GP