ABB A43

Communication with M-Bus
A43/A44 244 2CMC48001M0201
User Manual Revision: C
1F
C5 16
System sends out request UD2: 10 5B FE 59 16
Meter sends out data telegram 6:
68 54 54 68 08 00 72 34 12 00 00 42 04 20 02 B7 00 00 00 01 FD A5 00 0F
01 FF AB 00 01
D4 20 A9 FF F9 D1 00 3A 23 00 00
4E ED EB 00 00 00 14 15 08 14
DE 40 FD E1 A2 FF F9 D9 00 44 02 00 00 00 00
4E ED EB 00 00 46 13 15 08 14
4E ED EB FF F0 00 00 00 00 16 08 14
0F ;Dif 0F -> No more data exists
26 16
10.4.3 Readout of Previous Values
Read request
A read request is performed by sending the following SND_UD to the meter (all
values are hexadecimal) followed by a REQ_UD2
Byte No.
Size
Value
Description
1
1
68
Start character
2
1
0A
L-field, calculated from C field to last user data
3
1
0A
L-field, repeated
4
1
68
Start character
5
1
53/73
C-field, SND_UD
6
1
xx
A-field, address
Byte No.
Size
Value
Description
7
1
51
CI-field, data send, LSB first
8
1
02
DIF size, 2 byte integer
9
1
EC
VIF time point, date, M-Bus data type G
10
1
FF
VIF next byte is manufacturer specific
11
1
F9
VIF extension of manufacturer specific VIFEs, next
VIFE specifies actual meaning.
12
1
19
VIFE specifies Previous values
13-14
2
xxxx
Date (M-Bus data type G, LSB byte sent first)
15
1
xx
CS checksum, calculated from C field to last data
16
1
16
Stop character