Daylight Savings Time - ABB A43 User Manual

Communication with Modbus
Contents Register Byte nr
Day id
Note –
otherwise the values will not take effect.
Write special day
Follow the steps in the table below to configure the special days:
configuration
Step
1
2
3
Read special day Follow the steps in the table below to read the current special day configuration:
configuration
Step
1
2
3
Note –
the number of special days used is already known.
Note –
Spe-cial day registers in step 2. The Special day number register holds the current
special day number, starting from 1 after reading the Number of special days
register. It is incremented every time the Special day registers are read.

9.10.7 Daylight Savings Time

Daylight savings time (DST) can be enabled and if enabled it has a start and end
General
time that can be defined.
2CMC48001M0201
Revision: C
1
8CD6 0
1
8CD7 (Both)
All 3 registers in the table above must be written in one operation,
Action
Write the number of special days to use to the Number of special days register.
This is a value between 1 and 50.
Write the desired date and day id of the first special to the Special day registers.
Repeat step 2 for all special days that shall be used, i.e. the same number of
times as the value written in step 1.
Action
Read the Number of special days register to find out how many special days
are used.
Read from the Special day registers to get the date and day id for the first
special day.
Repeat step 2 for each special day, until all special day configurations have
been read. This means step 2 shall be performed the same number of times as
the value read in step 1.
Step 1 initiates the readout procedure and can NOT be left out, even if
The Special day number register can optionally be read together with the
165
Description
Month
Day
Not used
Day ID associated with the special day
A43/A44
User Manual