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9.2
System self-test
9.2.1 Automatic self-tests after switching on the device:
1)
After switching on the main memory (RAM) of the controller is checked at first. Should
an error be detected „XRAMERR“ appears in the LCD-display.
2)
Then printer and scanner are initialised and the welcome message is printed out. The
procedure is displayed in the lower left corner of the display
3)
A signal tone can be heard and the welcome display appears.
4)
The check sum of all resident adjusted parameters is checked. If this is not ok the default
parameters are loaded. This is always the case when the instrument is switched on the
first time after it has been built. Thereafter the error message “Default parameter
loaded” appears for indicating that among others the calibration curve is active again!
The error number 2000 is stored in the error list (chapter 10.2)
5)
When changing into the measuring mode the ball sensors are inspected, they have to be
inactive then. If this is not the case the error message „Error: Ball-Sensor is not OK!“
appears. The error number 2100 is stored in the error list (chapter 10.2).
9.2.2 Cycle tests during measuring mode:
1)
The communication via the I2C-bus (internal data management) is surveyed. If an error
occurs the message „Error found, I2CErr“ is displayed and the error number 1000 is
stored in the error list (chapter 10.2).
2)
The actually measured temperature is surveyed. If it exceeds 50°C the heating is
switched off and the message „Error found, Temp = VALUE“ is displayed. The error
number 1100 is stored in the error list (chapter 10.2).
3)
The communication with the LCD-display is surveyed. If an error occurs the message
„Error found, LCDErr“ is displayed and the error number 1200 is stored in the error list
(chapter 10.2).
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