ABB A43

Communication with Modbus
2CMC48001M0201 167 A43/A44
Revision: C User Manual
Mapping table The following table shows an overview of the mapping table:
Quantity
Details
Start Reg (Hex)
Size
DST
DST start
8CE6
2
DST
DST end
8CE8
2
DST
DST enabled
8CEA
1
DST start and
end registers
The following table shows the contents of the registers for configuring DST
start. The structure of the DST end registers are the same as for DST start.
Register
Start
Size
Description
Read/
Reg
write
(Hex)
DST start
8CE6
2
Byte 0*: month
R/W
Byte 1: Day of month
R/W
Byte 2: Day of week, 1 = monday, 7 = sunday
R/W
Byte 3: Hour
R/W
* Byte 0 is the highest byte of the lowest register.
For month, day of month and day of week wild cards can be used according to
the table below.
Setting
Wild cards available
Month
Not specified: 255
Day of month
Not specified: 255
Last day of month: 254
2:nd last day of month: 253
Day of week
Not specified: 255
Hour
-
DST enabled The DST enabled register decides whether the DST functionality of the meter is
register turned on or not: 0 = off, 1 = on.
Examples of DST Month = 3, Day of month = 254, Day of week = 7, Hour = 2 means last sunday of
start/end
march 02:00.
Month = 3, Day of month = 254, Day of week = 255, Hour = 2 means last day of
march 02:00, regardless on which weekday it occurs.
Month = 3, Day of month = 2, Day of week = 7, Hour = 2 means second sunday
of march 02:00.