Liberty 100 Smart Electricity Meter Technical Reference Manual
UTRN Entry from Default Mode
7.9 UTRN Entry from Default Mode
A valid UTRN entry from this mode can be used to change the meter’s main switch state from On to Off or Off to
READY.
A short press of key ‘A’ will initiate the UTRN entry process and the following display indicates that the meter is
in UTRN entry mode:
Once in UTRN entry mode, the function of key ‘A’ changes to backspace; each press of key ‘A’ will delete the
digit on the left, after deleting all digits the ‘Vend Mode’ display will return.
At the end of UTRN entry, either a short press of key ‘B’ or a short wait for the configured period will initiate the
code authentication process which will be followed by any one of the following displays:
Displayed if the UTRN is valid.
Followed by
Or
Or
Or
(timeout 4 secs)
Or
Displayed if the UTRN is invalid followed by the reason
for rejection.
‘Duplicate’ indicates UTRN is rejected because a used
UTRN is re-entered.
‘Invalid’ indicates UTRN is rejected because the UTRN
is not meant for the meter.
‘Incorrect’ indicates UTRN is rejected because it is a
wrong UTRN.
‘Incomplete’ indicates UTRN is rejected because it is
not in multiples of 20-digit.
The display ‘Key Locked’ indicates that the user has
entered five (5) consecutive invalid UTRN and this
locks key ‘A’ for the configured timeout period.
Table 29: UTRN entry from Default mode