Siemens SIMATIC PG 720 P Manual

Also see for SIMATIC PG 720 P: Product information bulletin

Contents

3-13PG 720 P Programming DeviceC79000-G7076-C721-023.4 TrackballThe trackball is a pointing device for cursor control and menu selection inmany programs that support mouse operation. By moving the trackball, thecursor can be positioned anywhere on the screen.By pressing the left-hand button, you set a marker. The function of theright-hand button depends on the particular program you are using. You canselect objects or items in a menu and start functions with the trackball.The trackball is in a roller housing which normally prevents dust collectingon the ball or transmission mechanism. Nevertheless, you should clean thetrackball at regular intervals.To clean the trackball, proceed as follows:1. Switch off your programming device.2. Remove the cover of the trackball housing by turning it anti-clockwise,for example by inserting tweezers or a similar tool into the holes in thering.3. You can now take the trackball out of its housing.4. Wash the trackball in a solution of tap water and mild cleansing agent.5. Blow any residual dust out of the trackball housing.6. Dry the trackball and return it to its housing.7. Replace the cover and tighten it by turning it in a clockwise direction.TrackballCleaning theTrackballGetting to Know the PG 720