GE PACSystems RX7i Cpu Programmer's Reference Manual page 304

Unpacked BCD (2-Digit Year)
In Unpacked BCD format, each digit of the time and date items occupies the low-order four bits of a
byte. The upper four bits of each byte are always zero. This format requires nine words. Values are
hexadecimal.
Parameter Block Format
1 = change or 0 = read
2 (Unpacked BCD format)
High Byte Low Byte
year
month
day of month
hours
minutes
seconds
day of week
Unpacked BCD (4-Digit Year)
In Unpacked BCD format, each digit of the time and date items occupies the low-order four bits of a
byte. The upper four bits of each byte are always zero. This format requires nine words. Values are
hexadecimal.
Parameter Block Format
1 = change or 0 = read
82h (Unpacked 4-digit BCD format)
High Byte Low Byte
year
month
day of month
hours
minutes
seconds
day of week
GFK-2950C
Address Example
(Thurs., Dec. 8, 2002, at 9:34:57 a.m.)
Address 0h
Address+1 2h
High Byte
Address+2 00h
Address+3 01h
Address+4 02h
Address+5 00h
Address+6 03h
Address+7 05h
Address+8 00h
Address Example
(Thurs., Dec. 8, 2002, at 9:34:57 a.m.)
Address 0h
Address+1 82h
High Byte
Address+2 00h
Address+3 01h
Address+4 00h
Address+5 00h
Address+6 03h
Address+7 05h
Address+8 00h
February 2018
Chapter 6. Service Request Function
Low Byte
02h
02h
08h
09h
04h
07h
05h
Low Byte
02h
02h
08h
09h
04h
07h
05h
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