User Manual

Table Of Contents
On Air Message Types 4-21
SmartPoint Module for the Elster A3 Meter ECMTM40000
4.13 Load Profile Metadata Message—App Code 28
Message Format: This message is sent in response to a Load Profile Metadata ping. All values are read from
C12.19 tables in the meter. Elster document “DD228-01.05/01.02 A3 Tables for 3
rd
Party Developers” can be
used as additional reference. The references ST-xx and MT-xx represent C12.19 Standard Table xx and
Manufacturer’s Table xx respectively. The message has the following Application Data field format:
4.14 Load Profile Block Data Message—App Code 29
Message Format: This message is sent in response to a Load Profile Block Data ping. All values are read
from C12.19 tables in the meter. Elster document “DD228-01.05/01.02 A3 Tables for 3
rd
Party Developers”
can be used as additional reference. The message contains raw interval block data, and as many messages
as necessary are sent to complete and entire block. The length of the block can be determined using the
following equation using variables from the Load Profile Metadata Message:
SizeOfBlock = 5 + ((NumberOfIntervalsPerBlock + 7)/8) + (NumberofChannels * 2)) *
NumberofIntervalsPerBlock)
The app sequence number in the FlexNet header is set to the LSB of the LP block’s sequence number, as
calculated based on Last_Block_Seq_Num - N (where N is the requested block number).
Byte (Bits) Field
0 (0:6) Reserved
0 (7) LP Read Failure
1-2 Number of Blocks Set (ST-61)
3-4 Number of Intervals Per Block (ST-61)
5 Number of Channels (ST-61)
6 Interval Size (minutes) (ST-61)
7 Adjusted Kh Scale Factor,power of 10 (MT-15)
8-13 Adjusted Kh (MT-15)
14 Adjusted p/r (MT-15)
15 Unit of Measure (MT-17)
16 Flow (MT-17)
17-21
Block End Time, Year,Month, Day, Hour Minute (ST-
64)
22-23 Simple Interval Status (ST-64)