User Manual

On Air Message Types 4-10
SmartPoint Module for the Elster A3 Meter ECMTM40000
4.8.9 Fixed Bin Width History Samples
All bits of bytes 12-27. As many History Sample bins as possible are packed into the remaining space
in the on air message. Each history sample is stored as the difference from the last reading. Note: A
residential meter at maximum load can generate 346 counts per hour. The size and number of History
Sample bins in the message are determined by the Delta Data Type field are shown in the following
table (6-7 are reserved).
4.9 C&I Tier Data—App Code 14
4.9.1 Message Format
This message is used to transmit tier data from the C12.19 Standard Table 23 and has the following
format (Note that Tier 7 is a special case to report Service Quality and has a different format).
Delta
Data
Type
History
Sample
Interval
(min)
Max
Pulses
per
Interval
Required
# Bits
#
Available
Bins
Total
History
(Hours)
Likely
Transmit
Rate
0
5 28.33 5 25 2.333 30 min
1
15 85.00 7 18 5 1 Hr
2
60 340.00 9 14 16 4 Hr
3
360
(6 Hours)
2040.00 11 11
78
(3.25
days)
6 Hr
4
720
(12 Hours)
4080.00 12 10
144
(6 days)
12 Hr
5
1440
(24 Hours)
8160.00 13 9
264
(11 days)
12 Hr
App Data Bytes Data
0 Tier Information
1 (0:5) Meter Type
1 (6:7) Selected Data Table
2-4 Data Flags / Peak Demand Time
5-8
Summation Reading (10
3
resolution)
9-12
Demand Reading (10
0
resolution)
13-16
Cumulative Demand Reading
(10
2
resolution)
17-20
Coincident Reading (10
3
resolution)