Hi5a controllermaintenanceHi5a-S/P/C/T/J Controller Maintenance Manual4. Basic Components of Controller4.3. The Function of Each Component4.3.8. Teach pendant (TP520/TP530)On this page4.3.8. Teach pendant (TP520/TP530)4.3.8. Teach pendant (TP520/TP530) 4.3.8.1. Outline4.3.8.2. USB cover