5.4 Operating modes
The operating keys and display enable all relevant settings to be carried out without
using peripheral units.
The settings are arranged in three security levels (lock levels).
Various data can therefore be altered depending on the operating mode.
User mode:
When the housing is closed, freely accessible data can be shown in the display
using the keys.
Service mode:
This can be activated by pressing the service key when the cover is open. It also
enables all necessary but non-verifiable startup parameters to be set and displayed.
Programming mode:
This enables the complete range of settings, including calibrated values, to be
made.
This can be activated only if the leaded seal has been destroyed. It is not described
in these instructions.
71
CALEC
ST II
®