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Setting based on the user program
After the time data is written in the special data register DT90054 - DT90057, write H8000 in
DT90058. Perform the transmission by following the order of H8000→H0000 or using the
differential instruction. Always remember not to input H8000.
R0
DF
（
）
Set 0 minutes 0
ⓐ
seconds
21.5.3 Clock/calendar Application Examples
Application example (regular automatic start)
• Use the clock/calendar (real-time clock) function to output 1 second (Y0) signal at 8:30 am
every day. In this example, the "hour, minute data" stored in the special data register
DT90053 are used to output signal regularly.
• In DT90053, the "hour data" and "minute data" are respectively stored in the high 8 bytes
and low 8 bytes in the form of BCD. When compare this "hour, minute data" and the value of
any time (BCD), use the special internal relay R900B (= flag) to check if the time is
consistent.
R9010
R900B
R0
DF
（
）
Y0
ⓐ
Compare the value of special data register DT90053 (hour, minute data) and H830 (8:30).
ⓑ
Output if consistent
F0 MV
H0
F0 MV
H512
F0 MV
H8000
ⓑ
Set 5 days 12 hours
F60 CMP
DT90053
T0
TMX 0
Output pulse at a fixed time
ⓒ
(1 second)
ⓐ
DT90054
ⓑ
DT90055
ⓒ
DT90058
ⓒ
Time alignment
ⓐ
H830
R0
ⓑ
Y0
ⓒ
ⓓ
K10
0.1 s timer
ⓓ
setting K10, used as 1 s
timer
21.5 Clock/Calendar
21-15
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