User Manual

Table Of Contents
On Air Message Types 4-23
SmartPoint Module for the Elster A3 Meter ECMTM40000
4.15 Firmware Image Check Response—App Code 30
Message Format: The device responds back to the download host with a Firmware Image Check Response
packet containing the number of bad blocks in the response, followed by a sequence of block numbers ( word-
sized, 2 bytes each, little endian ) which have not been received by the device since the last Load 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 Firmware
Image Check Response is:
4.16 High Res C&I Meter Read with History—App Code 38
Message Format: The device sends this message in response to a
4.17 Generic Ping Response—App Code 48
The generic ping response is sent in response to pings which do not generate on-air message types. The ping
response sub-type identifies the type of ping response.
Currently defined ping response sub-types are descibed in the following sections:
App Data
Byte
0 2 2-n
Data
App Code =
Firmware Image
Check Resp
(30)
# of bad
blocks
List of Block
Numbers
App Data
Byte (Bits)
Field
0 Ping Response Sub-Type
1-27 Ping Response Data