GE PACSystems RSTi-EP, Cpu Programmer'S Reference Manual

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Chapter 6. Service Request Function
GFK-2950C February 2018 287
In any format:
▪ Hours are stored in 24-hour format.
▪ Day of the week is a numeric value ranging from 1 (Sunday) to 7 (Saturday).
Value Day of the Week
1 Sunday
2 Monday
3 Tuesday
4 Wednesday
5 Thursday
6 Friday
7 Saturday
BCD, 2-Digit Year
In BCD format, each time and date item occupies one byte, so the parameter block has six words.
The last byte of the sixth word is not used. When setting the date and time, this byte is ignored;
when reading date and time, the function returns a null character (00).
Parameter Block Format Address Example
(Sun., July 3, 2005, at 2:45:30 p.m.
= 14:45:30 in 24-hour format)
1 = change or 0 = read Address 0 (read)
1 (BCD format) 1 1 (BCD format)
High Byte Low Byte Address High Byte Low Byte
month year 2 07 (July) 05 (year)
hours day of month 3 14 (hours) 03 (day)
seconds minutes 4 30 (seconds) 45 (minutes)
(null) day of week 5 00 01 (Sunday)
BCD, 4-Digit Year
In this format, all bytes are used.
Parameter Block Format Address
Example
(Sun., July 3, 2005, at 2:45:30 p.m.
= 14:45:30 in 24-hour format)
1 = change or 0 = read Address 00 (read)
81h (BCD format, 4-digit) 1 81h (BCD format, 4-digit)
High Byte Low Byte Address High Byte Low Byte
year year 2 20 (year) 05 (year)
day of month month 3 03 (day) 07 (July)
minutes hours 4 45 (minutes) 14 (hours)
day of week seconds 5 01 (Sunday) 30 (seconds)