User Manual

Table Of Contents
On Air Message Types 4-17
SmartPoint Module for the Elster A3 Meter ECMTM40000
4.11.5 Current Meter Reading
20 bits, of the meter setting. All 6 decimal meter digits represented in binary.
4.11.6 Extended Time Since Event
A 16 bit fields containing the MS two bytes of Time Since Event in 1536 second resolution since a
power failure or power restoration actually occurred. This yields over 3 years of possible
measurement. The overall Time Since Event can be calculated using the following formula:
Total Time Since Event = (Extended Time Since Event)* 1536 + (Time Since Event)*6
4.11.7 Device Temperature
An 8 bit signed value containing the current device temperature in degrees Celsius.
4.11.8 µP Status
Microprocessor Status, 8 bits with 3 fields. RAM and ROM Tests are run once at boot-up. Processor
Rests is a one up counter that increments once every time the microprocessor is reset. This field is
cleared by a static setup message. The bit fields are defined in the table below:
4.11.9 Lock Errors
Voltage Controlled Oscillator Errors, 8 bits with 2 fields. Rx Calibration Errors is a one up counter that
increments once every time the receiver chip is commanded to calibrate and fails. Synthesizer Lock
Failures is a one-up counter that increments once every time the transmitter is commanded to lock to
a frequency and fails. These fields are cleared by a static setup message. The bit fields are defined in
the table below:
Bits Description
7:6 Reserved
5 RAM Test Failed
4 ROM Test Failed
3:0 Processor Resets
Bits Description
7:4 Receiver Calibration Errors
3:0 Synthesizer Lock Failures