SINAMICS S120 BASIC OPERATOR PANEL BOP20 FOR ELECTRONIC CONTROLS TWO-LINE DISPLAY, 6 KEYS FOR PARAMETER SETTING AND DIAGNOSTIC INFORMATION SUITED FOR CONTROL UNITS CU305, CU310, CU320 Handheld for operating unit SINAMICS Basic Operator Panel (BOP20) for SINAMICS S120 converter system. Via the BOP20 Basic Operator Panel, which can be plugged into any CU305 Control Unit, alarms can be acknowledged, parameters set, and diagnostic information (e.g. warning and fault messages) read out. SINAMICS – simply my drive!