Levelflex FMP51, FMP52, FMP54 FOUNDATION Fieldbus Operation options
Endress+Hauser 73
8.2.7 Enabling and disabling the keypad lock
The keypad lock allows to disable access to the entire operating menu via local operation.
Thus navigating through the operating menu or modifying the values of individual
parameters is no longer possible. Only the measured values on the measured value display
can be read off.
The keylock is enabled and disabled via a context menu.
Enabling the keylock
For the SD03 display:
The keylock is automatically activated:
• If the device has not been operated via the display for > 1 minute.
• After a restart of the device.
To activate the keylock manually:
1. The device is in the measured value display.
Press for at least 2 seconds.
A context menu appears.
2. Select Keylock on from the context menu.
The keylock is enabled.
When attempting to access the operating menu while the keylock is enabled, the
Keylock on message appears.
Disabling the keylock
1. The keylock is enabled.
Press for at least 2 seconds.
A context menu appears.
2. Select Keylock off from the context menu.
The keylock is disabled.
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