Delta DVP-ES2 - Manual (Page 90)

D V P - E S 2 / E X 2 / S S 2 / S A2 / S X 2 / S E O p e r a t i o n M a n u a l - P r o g r a m m i n g
X10
M1015
M1016~M1017, D1313~D1319 Function Group
Real Time Clock Number
Contents:
1. Special M and special D relevant to RTC
Device Name Function
OFF: display the last 2 digits of year in A.D
M1016 Year Display
ON: display the last 2 digits of year in A.D. plus 2,000
When triggered from “Off” to “On”, the correction is enabled.
±30 seconds
correction
M1017 0 ~ 29 second: minute intact; second reset to 0
30~ 59 second: mimute + 1; second reset to 0
D1313 Second 0~59
D1314 Minute 0~59
D1315 Hour 0~23
D1316 Day 1~31
D1317 Month 1~12
D1318 Week 1~7
D1319 Year 0 ~ 99 (last 2 digits of Year in A.D.)
2. If set value for RTC is invalid. RTC will display the time as Second→0, Minute→0, Hour→0,
Day→1, Month→1, Week→1, Year→0.
3. Only when power is on can RTCs of SS2 series perform the fuction of timing. Memory of RTC
is latched. RTC will resume the time when power is down. For higher accuracy of RTC,
please conduction calibratoin on RTC when power resumes.
4. RTCs of SA2 V1.0 及 ES2/EX2/SX2 V2.0 series can still operate for one or two weeks after
the power is off (they vary with the ambient temperature). Therefore, if the machine has not
operated since one or two weeks ago, please reset RTC.
5. Methods of modifying RTC:
a) Apply TWR instruction to modify the built-in real time clock. Please refer to TWR
instruction for detail.
b) Use peripheral devices or WPLSoft to set the RTC value.
π (PI) Function Group
D1018~D1019 Number
Contents:
6. D1018 and D1019 are combined as 32-bit data register for storing the floating point value ofπ
7. Floating point value = H 40490FDB
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