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On Air Message Types 4-22
SmartPoint Module for the Elster A3 Meter ECMTM40000
The format of the message is as follows:
Byte (Bits) Field
0 (0:3) Message Sequence Number
0 (4:6) Number of Messages
0 (7) LP Read Failed
1 - n LP Samples, from ANSI C12.19 table ST-64
n+1 - n+4
(Last Message Only) The ANSI C12.19 Sequence
Number of the Block Requested