Functional Specification; Meter Operating Modes; Default Mode - Secure Liberty 100 Technical Reference Manual

5 Functional Specification

The following functional features of Liberty 100 are described in this section:

1. Meter operating modes

2. Registers, Load Profile and Snapshots
3. Metrology LED
4. Time keeping
5. Accounting
6. UTRN Transaction
7. Meter mode changing operation
8. Meter configuration and functionality
9. Alerts and Messages
10. Supply Voltage Quality Monitoring
11. Ambient power threshold status
12. Load limiting
13. Change of supplier
14. Change of tenancy
15. Meter switch state
16. Detecting and logging events
17. Communication channels
18. Meter reading data
19. Upgrading meter firmware
20. Engineering Codes
5.1 Meter Operating Modes
Liberty 100 meters can be pre-configured at manufacture to operate in one of the following modes as per the
supplier request:
a) Default mode
b) Credit mode
c) Prepayment mode
In addition, there are two functional modes that allow authorised users to view additional data and change some
of the configurations in the meter locally:
a) Diagnostic mode
b) Commissioning mode
The meter supports both local and remote runtime switching of operating modes. Switching to Default mode is
done via a service UTRN and to other operating modes via a tariff configuration change. Meter mode switching
is detailed in Section 5.7. Mode change and settings are downloaded once the meter becomes part of a Smart
Metering System and is connected via the WAN to the Head End System.

5.1.1 Default Mode

Unless otherwise specified, Liberty 100 is shipped with its default operating mode enabled which supports the
following minimum features:
● Credit mode with single rate tariff
BGX501-767-R02 Liberty 100 Smart Electricity Meter Technical Reference Manual Page 23 of 116