User Manual

Table Of Contents
Setup and Configuration 5-9
SmartPoint Module for the Elster A3 Meter ECMTM40000
5.3.3 Basic Reply Message Format
Reply Messages are only sent in response to a command, and are only sent if a direct serial
connection is present (serial Reply Messages are NOT sent if the magnetic programming loop
interface is used, responses can be gathered via the on-air Meter Setup / Configuration Message). All
setup command messages (setup tool to device) with have the following basic format, the CRC field
definition is the same as for Command Messages:
5.4 Status Request (0x91)
Request the current endpoint device configuration information (direct serial connection only). The command
has the following format:
The data field reply has the following format (a detailed description of each individual field can be found in
section ):
Byte 0 1 2 3 4 5->n
n+1,
n+2
Description
Syn
c
Addres
s
Reply
Type
Lengt
h
Data Sta-
tus
Dat
a
CR
C
Value
0x1
b
0x01
Matches
Com-
mand
#
Bytes
in
Data
Field
Bit 7: Ack/
Nack (0/1)
Bit 0:
EEROM
Failure
Msg
Type
Length CRC
0x91 0 0x391c
Byte (Bits) Field
4(0)
Status EEROM Write
Failed(1)
4(1:6)
(Reserved)
4(7)
Status ACK(0) / NACK(1)
5
Firmware Version
6
Device Type
7-10
Device Id
11 (0:2)
Meter Sample Rate
11 (3:7)
Supervisory Transmit Rate
12
Base Frequency
13-14
Transmit Channel A
15-16
Transmit Channel B