Locking And Unlocking Operation - Endress+Hauser IO-Link Ceraphant PTC31B Operating Instructions Manual

Operation options
28
7.5

Locking and unlocking operation

The device features
• Automatic key locking
• Parameter settings lock.
Key locking is indicated on the local display by "E > 2".
Locking of the parameter settings is indicated as soon as an attempt is made to change a
parameter.
7.5.1 Disabling the key lock
The keys are locked automatically if the device remains at the topmost menu level (display
of pressure measurement value) for 60 seconds.
Call up the key lock function (KYL)
1. Press the  key for at least 2 seconds and then release it
2. By confirming with  "ON" is displayed
3. Use  and  to toggle between "ON" and "OFF"
4. Key locking is disabled as soon as  is pressed to confirm "OFF"
The display changes to the main value level (topmost menu level) if the  key is pressed
briefly. The display changes to the key locking if the  key is pressed for at least 2
seconds.
If in the case of "KYL", "ON" or "OFF", more than 10 seconds elapse without a key being
pressed, you return to the topmost menu level with active key locking.
The function can be accessed anytime outside the main measured value display and within
the operating menu, i.e. if the  key is pressed for at least 2 seconds key locking can be
performed anytime at any menu item. Locking is effective immediately. If you quit the
context menu, you will return to the same point from which key locking was selected.
7.5.2 Locking and unlocking parameter settings
The device settings can be protected from unauthorized access.
COD parameter: define the locking code
0000 Device is permanently unlocked (factory setting)
0001-9999 Device is locked
LCK parameter: unlock parameter locking (enter the COD)
If parameters are locked, the word "LCK" appears on the local display as soon as an attempt
is made to change a parameter.
Examples:
Locking the device with a customer-specific code
1. EF → ADM → COD
2. Enter a COD not equal to 0000 (value range: 0001 to 9999)
3. Wait 60 seconds or restart the device
4. Parameters are locked (protected against changes)
Changing a parameter when the device is locked (taking the example of STL)
1. STL, LCK is displayed
Ceraphant PTC31B, PTP31B, PTP33B IO-Link
Endress+Hauser