Liberty 100 Smart Electricity Meter Technical Reference Manual
● GPRS WAN module- for communication to HES.
5.18 Meter Reading Data
The following information can be read from the meter using the supported communication protocol:
● Meter date and time
● Application firmware name and version
● Metrology firmware name and version
● Current credit level
● Unique identifiers such as meter serial number, MPAN, electricity supplier information, electricity meter
ID, meter type and its description, meter activation date and time (commissioning time), activation
status, meter removal date and time (decommissioning time), cumulative energy, rate registers and
blocks (or tiers).
● Mode of operation (Prepay or Credit)
● Configuration details
● Tariff structure and tariff information
● Snapshot data and midnight data
● Meter diagnostic data
● Events, tampers, faults and alerts
● Load profile
● Supplier information (supplier ID, name, start date and site ID)
5.19 Upgrading Meter Firmware
The firmware in the meter can be updated to change its operation. This can be done either locally using the IEC
1107 optical port or remotely over the air (OTA) via the communication module (hub). Upgrading 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: Current firmware name and version are available in meter readings and also on the meter’s display.
5.20 Engineering Codes
Engineering codes are used for changing the meter’s audible alarm suppression period or to enable the meter’s
Diagnostic Mode displays.
The alarm suppression period is the time during which audible alarms arising from any defined conditions will
not sound although visible alerts (if any) will be displayed on the meter’s display and the IHD (see Section
5.5.3).
Diagnostic mode displays are displays to aid local diagnosis of the meter’s operation and are not accessible to
users. See Annexe-II: Diagnostic Mode Displays.
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