User Manual

Table Of Contents
On Air Message Types 4-31
SmartPoint Module for the Elster A3 Meter ECMTM40000
4.18.4 Click Count
Byte 2 bits 3-7: The 5 LSBs of the modulo-256 click counter, a count of short duration power outages.
4.18.5 Current Consumption (wH resolution)
Bytes 3-6. The Current Consumption in represented as a 32 bit integer number in wH resolution.
4.18.6 Peak Demand Reading
32 bits, all of bytes 7-10. The peak demand reading is represented as a four byte floating point number
in W.
4.18.7 RMS Volts Phase A-C
Bytes 11-13. Represented in 2 Volt resolution.
4.18.8 History Data
Bytes 14-27. History data samples compressed using the FlexNet Variable Bin Width compression
mechanism.
4.19 Scratch Pad Image Check Response—App Code 57
Message Format: The device responds back to the download host with a Scratch Pad Image Check
Response packet containing the number of bad blocks in the response, followed by a sequence of block
numbers (1 byte each) which have not been received by the device since the last Scratch Pad Start message
was received. If all blocks have been received and the CRC is correct, the response contains only the sub-
command and a single byte of 0. If the CRC is incorrect, but the device has received all blocks, the response
contains the sub-command, a single byte of 1 and 2 bytes of 0xFFFF. The format of the Scratch Pad Image
Check Response is:
5
1440
(24 Hours)
6
240
(4 Hours)
App Data
Byte
0 2 2-n
Data
App Code =
Scratch Pad
Image Check
Resp (30)
# of bad
blocks
List of Block
Numbers, 1 byte
each
Delta Data Type
History Samp Interval
(min)