Special Readout Of Meter Data - ABB A43 User Manual

Communication with M-Bus
10.4 Special Readout of Meter
Data
Introduction
Some data in the meter can only be read by first sending a SND_UD followed
by a REQ_UD2.
Note –
described below. If the meter is in the middle of another special data readout
process it will not respond correctly to the command.
After reading the first telegram, it is possible to continue reading by sending
re-peated REQ_UD2 commands
If the data item that has been read is normal and without any specific status asso-
ciated with it, no status-VIFE or 0 will be sent out. If the status is "data error" or
"no data available", the standard M-Bus status coding will be sent out (18 hex or
15 hex).
Readable data
The data that can be read in this way is:
Date, date/time
In some cases data specifying date or date/time is contained in the read
format
request command.
The format for date used in the commands is M-Bus data type G:
Day in bits 0-4
Months in bits 8-11
Year in bits 5-7 and 12-15 (bits 5-7 are the LSB bits)
The format for date/time is 6 bytes BCD or M-Bus data type F. M-Bus data
type F consists of
Minutes in bits 0-5
Hours in bits 8-12
Day in bits 16-20
Months in bits 24-27
Year in bits 21-23 and 28-31 (MSB bits)
If a date or date/time is specified in the command, the meter sends out data for that
period. If no data is stored in the meter for the specified period, the meter will
2CMC48001M0201
Revision: C
An NKE should always be sent before sending any of the commands
• Load profile
• Demand
• Previous values
• Logs
• Harmonics
229
Valid values 1-31
Valid values 1-12
Valid values 1-99
Valid values 0-59
Valid values 0-23
Valid values 1-31
Valid values 1-12
Valid values 0-99
A43/A44
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