On Apr 20, 5:10*pm, Bob Minchin
wrote:

I have found the answer herehttp://universalmeterservices.co.uk/store/images/5193.doc

Meter Memory

All the meters data is recorded in a Ferroelectric Random Access
Memory (FRAM) under the control of the microprocessor. All the kWh
registers are stored in the FRAM and are updated every 1/100 th of a
kWh. The FRAM is guaranteed for a minimum of 10,000,000,000 write
cycles


WTF? Core memory?! 8-)