Oldham iTrans 2 - Page 57

57
Addr
Inst
R/W
Host
R/W
Range
Description
40115
W
R
Last Alarm Date (mmdd)
Holds the month and day when the
instrument had the last alarm.
High byte = $01 to $0C
Low byte = $01 to $1F
Examples:
Dec 25 is represented as $0C19
June 31 is represented as $061F
40116
W
R
Last Alarm Date (00yy)
Holds the last two digits of the year when
the instrument was last in alarm. The first
two digits are assumed to be “20”.
High byte = $00, Low byte = $02 to
$63
Examples:
2002 is represented by $02
2099 is represented by $63
40117
R
R/W
MSB=$01 to
$0C,
LSB=$01 to $1F
RTC Month and Day
Holds the month and day to which the real
time clock (RTC) calendar should be set.
The most significant byte (MSB)
represents the month from $01 to $0C (1-
12). The least significant byte (LSB)
represents the day of the month from $01
to $1F (1-31).
Examples:
December 25 = $0C19
June 30 = $061E
40118
R
R/W
$0002 to $0063
RTC Year (00yy)
Holds the year to which the real time clock
(RTC) should be set. The most significant
byte (MSB) is always $00. The least
significant byte (LSB) represents the two-
digit year (within the 21
st
century), from
$02 (which represents 2002) to $063
(which represents 2099).
Examples:
2002 = 02 (+ base year of 2000) =
$0002
2010 = 10 (+ base year of 2000) =
$000A
2099 = 99 (+ base year of 2000) =