Set Voltage Transformer (Vt) Ratio - Primary Voltage; Set Current Transformer (Ct) Ratio - Secondary Current - ABB A43 User Manual

Communication with M-Bus

10.5.6 Set voltage transformer (VT) ratio - primary voltage

The voltage transformer ratio (VT) primary voltage is set by sending the follow-
ing command (all values are hexadecimal). The command is affected by the write
protection level set.
Byte No.
1
2
3
4
5
6
7
8
9
10
11-14
15
16

10.5.7 Set current transformer (CT) ratio - secondary current

The current transformer ratio (CT) secondary current is set by sending the follow-
ing command (all values are hexadecimal). The command is affected by the write
protection level set.
Byte No.
1
2
3
4
5
6
7
8
9
10
11-14
15
16
2CMC48001M0201
Revision: C
Size Value Description
1 68 Start character
1 0a L-field, calculated from C field to last user data
1 0a L-field, repeated
1 68 Start character
1 53/73 C-field, SND_UD
1 xx A-field, address
1 51 CI-field, data send, LSB first
1 04 DIF size, 32 bit integer
1 FF VIF next byte is manufacturer specific
1 21 VIFE VT ratio primary voltage
4 xxxxxxxx New VT ratio primary voltage
1 xx CS checksum, calculated from C field to last data
1 16 Stop character
Size Value Description
1 68 Start character
1 0a L-field, calculated from C field to last user data
1 0a L-field, repeated
1 68 Start character
1 53/73 C-field, SND_UD
1 xx A-field, address
1 51 CI-field, data send, LSB first
1 04 DIF size, 32 bit integer
1 FF VIF next byte is manufacturer specific
1 22 VIFE CT ratio secondary current
4 xxxxxxxx New CT ratio secondary current
1 xx CS checksum, calculated from C field to last data
1 16 Stop character
277 A43/A44
User Manual