Figure 7-3 HW key behind the display (placed on the right pins)
Note
Important
In this mode, with the HW key installed, many parameters in PDM are opened. If these
parameters are changed, it can seriously affect the meter accuracy and operation. Be careful
when writing new parameters.
Changing the HW-protected parameters
1. Disconnect the power supply from the transmitter, i.e. battery plug and the mains power
supply
2. Remove the frame and the display from the transmitter.
3. Insert the HW key vertically on right pins as shown in figure above.
4. Remount the display and frame on transmitter.
5. Restart the device.
6. Make parameter changes through PDM.
7. Download parameter changes to the device.
8. Remove the HW key by following the preceding steps.
Functions
7.4 Hardware key
SITRANS FUS380/FUE380
Operating Instructions, 05/2018, A5E00730100-AE 67
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