Mitsubishi 00JCPU User Manual page 198

(6) Clock data accuracy
Accuracy of the clock data varies depending on the ambient temperature as shown below.
Ambient
temperature
( )
0 -3.2 to +5.27 (TYP.+1.98)
+25 -2.57 to +5.27 (TYP.+2.22)
+55 -11.68 +3.65 (TYP.-2.64)
(7) Clock data comparison
To compare clock data in a sequence program, read the clock data with the DATERD instruction (instruction for
reading clock data).
Since the DATERD instruction reads the year data in four digits, the data can be compared by the comparison
instruction without any modifications.
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Table6.8 Clock data accuracy
Basic model QCPU
Accuracy (Day difference, S)
High Performance model QCPU,
Process CPU
-3.18 to +5.25 (TYP.+2.12)
-3.93 to +5.25 (TYP.+1.9)
-14.69 to +3.53 (TYP.-3.67)
Redundant CPU
-3.2 to +5.27 (TYP.+2.07)
2.77 to +5.27 (TYP.+2.22)
-12.14 to +3.65 (TYP.-2.89)