REV 0, June 2005 Page 43
Operation Manual SUPREMA
4. Operation of the System
If another menu is active and there is no operator activity for 5 minutes, the system returns to
menu mode. If an alarm occurs, alarm mode is automatically activated.
Access authorisation
In the “Setup” and “Maintain” submenus, data can be displayed and entered and certain actions
can be initiated by pressing buttons (e.g., starting a calibration procedure). However, the last
two items require access authorisation by entering a password or introducing a key into a
switch, if so equipped.
If the user wishes to change a value or press a restricted access button and does not have
authorisation, he must enter the password or activate the key switch. Password authorisation
remains in effect until measurement mode is activated either through operator input or
automatically due to inactivity. Pressing the key switch will be requested for each data input.
The system is delivered with the default password “AUER”.
All of the operator functions are available through both control units, the integral operation/
display unit and the PC, if connected. However, certain actions such as changing parameters
or calibration cannot be performed simultaneously through both control units. Therefore, to
perform an action of that type, modification authorisation will be required and verified. It will
remain exclusive for that control unit until measurement mode is activated either through operator
input or automatically due to inactivity, after which it will again be possible to switch between
the control units. If modification authorisation is at the PC and there has not been any
communication between the PC and SUPREMA system for more than 5 minutes, modification
authorisation will be released automatically.
In the “Measure” and “Diagnosis” submenus, data is only displayed, and so there is no access
control.
Measure
When system configuration is complete, the “Measure” menu for displaying measurement
data will appear automatically when the system is started. For display of measurement values,
it is possible to choose from three display types in the menu list:
• List
• Bar
• LED
Displayed measurement data and status values are updated at intervals.
If the operator is in the menu list and does not hit any key for 5 seconds, the value display will
cycle to a picture. To scroll through the picture content manually press the ↵ key to enable Ï
and Ð. Press ESC to return to the menu list.
Choice of display type is independent of whether the device is operating in measurement or
alarm mode. The system always returns to List display after a restart.
Measure Mode
During normal operation the system is in measure mode, which displays all of the inputs available
in the system.
Contrary to the common alarm LED at the MDO front panel, the display of failures does not
flash. Measurement values that are over the full-scale range, or signal failures, are latched.
Measurement values below the measurement range behave as if they were non-latching alarms.
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