Readout Of Current Harmonics - ABB A43 User Manual

Communication with M-Bus

10.4.5 Readout of Current Harmonics

A read request for current harmonics is performed by sending the following
Read request
SND_UD to the meter followed by a REQ_UD2 (all values are hexadecimal).
Byte No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Read request for a specific phase
A read request for a specific phase is performed by sending the following
SND_UD to the meter followed by a REQ_UD2 (all values are hexadecimal).
Byte No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
2CMC48001M0201
Revision: C
Size Value Description
1 68 Start character
1 07 L-field, calculated from C field to last user data
1 07 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 00 DIF size, no data
1 FF VIF next byte is manufacturer specific
1 F9 VIF extension of manufacturer specific VIFE's, next VIFE
specifies actual meaning
1 1B VIFE specifies current harmonics
1 xx CS checksum, calculated from C field to last data
2 16 Stop character
Size Value Description
1 68 Start character
1 08 L-field, calculated from C field to last user data
1 08 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 01 DIF size, 8 bit integer
1 FF VIF next byte is manufacturer specific
1 F9 VIF extension of manufacturer specific VIFE's, next VIFE
specifies actual meaning
1 1B VIFE specifies current harmonics
1 xx Phase number 1-3, 4 for the neutral
1 xx CS checksum, calculated from C field to last data
1 16 Stop character
255 A43/A44
User Manual