A927ZET Technical Information Manual
31
Start Time
Start Time register is the starting time of current log. Format of this register is Unix time-stamp format. Register can be
written only when logging is not ongoing. Content of the register is totally dependent on the user since tag is not
required to validate the value. Calculating the real time of logged data records is based on this time stamp.
Temperature Start Time (int) [31:00]
User
Bank:11b
Word addr: 12h
R/W
Temperature Start Time (ext) [31:00]
User
Bank:11b
Word addr: 1022h
R/W
Battery Start Time [31:00]
User
Bank:11b
Word addr: 2032h
R/W
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Start Time [31:16]
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Start Time [15:00]
Unix time-stamp format (or Unix time or POSIX time or Unix epoch) is the number of seconds that have elapsed since
January 1, 1970 (midnight UTC/GMT), not counting leap seconds. The epoch timestamp 0 can be written in ISO 8601
format as: 1970-01-01T00:00:00Z. One epoch hour is 3600 seconds, one epoch day is 86400 seconds long, leap seconds
are not calculated. The following table shows example values of Start Time register.
dec
hex
Meaning
0
0000 0000
January 1, 1970 (midnight UTC/GMT)
1197396494
475E D20E
December 11, 2007 (18:08:14 UTC/GMT)
-2147483648
8000 0000
December 13, 1901 (20:45:52 UTC/GMT)
2147483 647
7FFF FFFF
January 19, 2038 (03:14:07 UTC/GMT)
Samples
Samples register is a read-only register which gives the amount of data records in the memory. This register is
incremented by the tag every time a data record is stored into memory. Samples is cleared by the tag during reset.
Temperature Samples (int) [15:00]
User
Bank:11b
Word addr: 140h
R only
Temperature Samples (ext) [15:00]
User
Bank:11b
Word addr: 1024h
R only
Battery Samples [15:00]
User
Bank:11b
Word addr: 2034h
R only
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Samples [15:00]
