Siemens Simatic PC Panel PC 870 - Manual (Page 53)

Release 11/02 Operating the Panel PC 670/870
SIMATIC Panel PC 670/870 Start-Up Instructions 3–9
10. Select the Calibrate button.
A window for touch calibration appears.
11. Touch the touchscreen at the cross-hairs.
During calibration, two cross-hairs are displayed which must be pressed for
a minimum of 3 sec. to a maximum of 10 sec. Finally, the Calibration
Complete window appears.
12. Press the Done button to terminate the calibration process.
Special features
The touch controller, integrated in the front, is designed to automatically
compensate for changes in the surface tensions of the touch sensor (e.g. due
to large temperature fluctuations). As a consequence, however, this feature
may initiate an automatic calibration when exactly the same point is continually
pressed for a while (>15 seconds).
If this happens,
Do not touch the screen touched for a short time. It is then recalibrated to the
original state.
An incidentally located background function is activated by the software
ProTool/Pro if touched when setting the touch parameters in the window
Microtouch
→ Touchsettings: Desktop or when the screen saver is activated.
Warning
Do not touch the screen:
• during the PC boot routine (until the acoustic BEEP signal),
• when plugging USB components in or out, and
• if the warning message
Do not touch the screen...
appears. Wait
at least 1 second after the message has disappeared.