ABB A43 User Manual

Communication with M-Bus
A43/A44 276 2CMC48001M0201
User Manual Revision: C
Byte No.
Size
Value
Description
9
1
16
Stop character
10.5.4 Reset power fail counter
The power fail counter is reset to 0 by sending the following command (all values
are hexadecimal). The command is not affected by the write protection level set.
Byte No.
Size
Value
Description
1
1
68
Start character
2
1
07
L-field, calculated from C field to last user data
3
1
07
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
00
DIF size, no data
9
1
FF
VIF next byte is manufacturer specific
10
1
98
VIFE no. of power fails
11
1
07
VIFE clear
12
1
xx
CS checksum, calculated from C field to last data
13
1
16
Stop character
10.5.5 Set Current transformer (CT) ratio - primary current
The current transformer ratio (CT) primary current is set by sending the
following command (all values are hexadecimal). The command is affected by
the write protection level set.
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
7
1
51
CI-field, data send, LSB first
8
1
04
DIF size, 32 bit integer
9
1
FF
VIF next byte is manufacturer specific
10
1
20
VIFE CT ratio primary current
11-14
4
xxxxxxxx
New CT ratio primary current
15
1
xx
CS checksum, calculated from C field to last data
16
1
16
Stop character

ABB A43 Specifications

General

Brand	ABB
Model	A43
Category	Measuring Instruments
Language	English