Chapter 2 Basic Unit Specification
11. RTC
2-35
11 RTC
Type
Item
-20M -30M -20H -30H -40H -60H
Register N.A
Built-in: Second(D8013), Minute(D8014),
Hour(D8015),Day(D8016), Month(D8017), Year(D8018),
Week(D8019)
With 30s offset
Special application
instruction (refer to
the Instruction
Description)
N.A
1. F160 TCMP: timing data compare
2. F161 TZCP: timing area data compare
3. F162 TADD: timing data add
4. F163 TSUB: timing data subtract
5. F166 TRD: read timing data
6. F167 TWR: write timing data
7. F169 HOUR: set the timer
Tolerance
N.A
±45seconds/month (25 )℃
Leap year
N.A
Auto offset
Flash memory
retentive
N.A
D8013 – D8019 data will be kept by lithium battery when
power fails
Set the time for RTC through the special coils and registers
Special
coil
Content Description
Special
register
Content
D8013 Second (0~59)
D8014 Minute (0~59)
M8015 Clock Stop and set ON: timing stops and it can
be reset
D8015 Hour
M8016 Stop time displaying ON: Read/ display time is
unavailable
D8016 Day
M8017 ±30s offset ON: enable ±30s offset D8017 Month
M8018 Clock detection ON: Clock is enabled D8018 Year (00~99)
M8019 Clock error ON: Clock error D8019 Week
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