ABB A43 User Manual

Communication with M-Bus
A43/A44 230 2CMC48001M0201
User Manual Revision: C
send out data from the nearest date backward in time. Therefore it is recom-
mended that the system should check the date sent in the telegram to verify that
it is the requested date. If no data is stored in the meter for the specified date, or
for any date backward in time, the telegram will contain no load profile data
(only the interval length).
10.4.1 Readout of Load Profile Data
Read request for a specified date and quantity
A read request for a specified date and quantity is performed by sending the fol-
lowing SND_UD to the meter followed by a REQ_UD2 (all values are hexadec-
imal).
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
02
DIF size, 2 byte integer
9
1
EC
VIF time point, date, M-Bus data type G
10
1
FF
VIFE next byte is manufacturer specific
11
1
F9
VIFE extension of manufacturer specific VIFE's, next VIFE
specifies actual meaning.
12
1
xx
VIFE specifies data requested:
10: Active import energy register values at end of interval
12: Reactive import energy register values at end of interval
14: Input 1 register values at end of interval
16: Input 2 register values at end of interval
1C: Active export energy register values at end of interval
1E: Reactive export energy register values at end of interval
20: Apparent import energy register values at end of interval
22: Apparent export energy register values at end of interval
24: Input 3 register values at end of interval
26: Input 4 register values at end of interval
28: Current average values per interval
29: Voltage average values per interval
2A: THD voltage average values per interval
2B: THD current average values per interval
2C: Power factor average values per interval
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

ABB A43 Specifications

General

Brand	ABB
Model	A43
Category	Measuring Instruments
Language	English