There are some feature limitations in GP-4100 series, GP4201TM, and GP-4301TM.
1.5.6 GP-4100 Series 1.5.7 GP-4201TM/GP4301TM
14.12.1 Restrictions on Numeric Displays
14.12.2 Text Display Restrictions
14.12.3 Restrictions on Input
1.5.6 GP-4100 Series1.5.7 GP-4201TM/GP4301TM1.5.6 GP-4100 Series1.5.7 GP-4201TM/GP4301TM