ABB A43

Communication with Modbus
A43/A44 134 2CMC48001M0201
User Manual Revision: C
Value
Description
3
Third highest/lowest value during the demand period
Capture time
The Capture time register shows the date and time when the minimum or
register
maximum value for this entry occurred.
Status register
The status register shows the status for a value stored at a given timestamp.
Possible values are shown in the table below:
Status
Description
0
OK
1
Not available
2
Data error
Example of data
The following table shows the relation between stored values and channels in data
block 1
block 1:
Entry
Timestamp
Channel 1
Channel 2..8
Capture time
Status
Value
1
110601
110515
0 (OK)
200 W
...
00:00:00
01:05:00
2
110501
110410
2 (Data error)
10000 W
...
00:00:00
02:10:00
3
110401
110305
0 (OK)
250 W
...
00:00:00
03:15:00
9.7.1 Reading Demand
General Readout of demand is controlled by the Entry number register or Date/Time
register. Entry number 0 is used for current demand, that is the pending period,
and entry numbers equal or bigger than 1 are used for historic demand periods.
After writing to any of those registers, the values of all channels for the given
entry number or date/time are available in the registers of data block 1 to 7,
together with status and timestamp information.
In the data blocks, the registers Quantity, Level, Data type and Scaler provide
further information about the data stored in each channel. To get the next block of
demand values, write the value 1 to the Get next entry register, and then read again
from the registers in the data blocks.