9.3.24.1
Enabling button lock
Procedure
1. Navigate to the parameter view.
Navigating in the views (Page 107)
2. In the parameter view, select the "Button lock" parameter.
3. Press the button.
The "EDIT" symbol flashes.
4. Select ON with the
or button.
5. Use the button to confirm.
Result
• The display automatically returns to the measurement view.
• The display automatically changes between the measured values every 12 seconds.
• The symbol for button lock "LL" and the measured value ID are displayed alternately.
9.3.24.2
Disabling button lock
Procedure
To disable the button lock, press and hold the button for 5 seconds.
Result
• The symbol for Button lock "LL" is hidden.
• You can operate the device using the buttons.
Parameter assignment
9.3 Parameter assignment over device with display
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
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Operating Instructions, 05/2020, A5E41864807-AB
