Delta AS Series Programming Manual page 887

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D100=K2, indicating DST state is being read.
Enable contact M1
Setting values and descriptions:
Setting
Device
Value
D100
D101
D102
D103
D111
D112
D113
D120 60
Y0.1 ON
Use the instruction DST or HWCONFIG in ISPSoft to read the daylight saving state. The HWCONFIG converts the result
from week number to the corresponding dates and months automatically.
_6
6 - 6 0 8
Before firmware V1.04 (V1.04 excluded), function code is fixed to 2,
2
indicating the DST state is being read.
After firmware V1.04 (V1.04 included), function code is 4, indicating the DST
7
state is ON and in mode 2.
5 Starting month: May
2 Starting week number: the 2
3 Starting day: Wednesday
9 Ending month: September
3 Ending week number: the 3
5 Ending day: Friday
Duration: 60 minutes
Node state is ON.
Description
nd
week
rd
week