Operator Control Using The Watch Table - Siemens SINAMICS V20 Manual

6 Operation of the Application

6.2 Operator control using the watch table

Control elements
The buttons displayed in the white frame on the operator panel, indicators and
input/output fields correspond to the signals listed in chapter 1.2 "Operation of the
drive". An unpressed button is displayed in gray and represents the logical state
false. A pressed button is displayed in green and represents the logical state true.
In the yellow input field, enter the speed setpoint as a percentage of the output
frequency of the SINAMICS V20. The white output field displays the actual speed,
also as a percentage of the output frequency.
Functions are not assigned to the six function keys below the screen; these keys
have no function.
Default
Due to entered start values in the InstUssCyclic instance DB, the drive starts at
50% of its rated speed in forward direction only when pressing ON/OFF1.
Error display
If a communication error occurs, the top part of the screen displays the saved error
status of the USS_PORT or USS_Port_Scan system FB. In this case, the Error button
flashes, which allows you to reset the error display.
6.2 Operator control using the watch table
Open the USSoperation watch table and go online.
Figure 6-3: Opening the USSoperation watch table
The tags in the watch table are identical to the ones on the operator panel. The
only thing that differs is the representation of STW and ZSW; in contrast to the
operator panel, they are not represented bit by bit but word by word.
SINAMICS V20 at S7-1200/1500 via USS
Entry ID: 109480894, V1.0, 09/2018
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