ABB A43

Communication with M-Bus
A43/A44 286 2CMC48001M0201
User Manual Revision: C
Byte No.
Size
Value
Description
1
1
68
Start character
2
1
0F
L-field, calculated from C field to last user data
3
1
0F
L-field, repeated
4
1
68
Start character
5
1
53/73
C-field, SND_UD
6
1
xx
A-field, address
7
1
51
CI-field, data send, LSB first
8
1
07
DIF size, 8 byte integer
9
1
FD
VIF extension of VIF codes
10
1
96
VIFE password
11
1
00
VIFE write (replace)
12-19
8
xxxxxxxxxxxxxxxx
Password
20
1
xx
CS checksum, calculated from C field to last data
21
1
16
Stop character
10.5.25 Set date and time
Date and time is set by sending the following command (all values are
hexadeci-mal). The command is affected by the write protection level set.
Note – Before sending the command an NKE should be sent. If the meter is in the
middle of a special data readout process it will not respond to the set date and time
command.
Byte No.
Size
Value
Description
1
1
68
Start character
2
1
0B
L-field, calculated from C field to last user data
3
1
0B
L-field, repeated
4
1
68
Start character
5
1
53/73
C-field, SND_UD
6
1
xx
A-field, address
7
1
51
CI-field, data send, LSB first
8
1
0E
DIF size, 12 digit BCD
9
1
6D
VIF time/date
10-15
6
xxxxxxxxxxxx
Time and date (sec, min, hour, day, month, year)
16
1
xx
CS checksum, calculated from C field to last data
17
1
16
Stop character