Panasonic FP-E Programming Manual page 572

High−level Instructions
Description
Converts the seconds data stored in the 32-bit area specified by S to hour, minute, and second data. The
converted hour, minute, and second data is stored in the 32-bit area specified by D.
Composition of data
Format of S+1 and S
32 bits (2 words) "S+1 and S" are allocated to express the seconds data. The data is expressed in BCD
format.
The BCD H data (8 digits) should be used for setting seconds data as follows:
BCD 8 digits (2 words)
S+1
H
Example: 35,999,999" (S+1: H3599, S: H9999)
Note
The maximum value that can be stored in D is 9,999 hours, 59
minutes and 59 seconds, so the maximum value that can be
specified for the time data for the seconds unit is 35,999,999
seconds.
Format of D+1 and D
32 bits (2 words) "D+1 and D" are allocated to express the converted hours, minutes and seconds data.
The converted hours (4 digits), minutes (2 digits) and seconds (2 digits) data is expressed in BCD format as
follows:
BCD 8 digits (2 words)
D+1
H
Converted hours data: H0000 to H9999 (BCD)
Example: 3:45'19" (D+1: H0003, D: H4519)
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S
Seconds data: H00000000 to H35999999 (BCD)
D
Converted seconds data: H00 to H59 (BCD)
Converted minutes data: H00 to H59 (BCD)