Liberty 100 Smart Electricity Meter Technical Reference Manual
Displays Friendly Credit status and the associated
switching date and time.
Displays ‘Not Used’ Displays ‘Not Used’
Displays total import and export register values and high resolution display. Displays ‘Not Used’
Performs display check and then displays date, time, load and CO
2
data of
the current hour and current day, yesterday, last week and last month.
Initiates
commissioning
process
Switches the display to UTRN entry mode; serves as backspace key during UTRN entry; enables
Emergency Credit when made available; initiates supply reconnection from ‘READY' state; used to
exit diagnostic mode.
Activates auto scroll display from sleep mode; used to scroll back through a
display sequence; initiates UTRN authentication process; mutes alarm;
used to confirm supply reconnection from ‘READY’ state.
Displays ‘Not Used’
Table 3: Summary of Keypad functions
3.5 Firmware
Firmware in the meter is in two parts:
• Metrology firmware
Metrology firmware controls the measurement functions. It also provides an operating system for the
application firmware. This firmware is fixed and cannot be upgraded.
• Application firmware
Application firmware controls the functions of the meter outside of metrology. It is possible to remotely
upgrade this firmware to change the meter operation. Upgrade can be made locally via IEC 1107 optical
port or remotely over the air (OTA) via the communication module (hub). Upgrading or updating the
firmware will not affect the meter data unless the update involves changing the parameters of such data.
Information related to load survey, transactions, account balance, events and storage or contents in
billing registers such as prepayment balance are not affected during these upgrades.
Note: The current firmware name and version are available in meter readings and are also available on the
meter’s Diagnostic display.
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