User's Manual
Table Of Contents
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Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology
112
5
System
Time & Date is the last time and date when the data was written.
Time and Date occupies 4 bytes and the format is:
Date and Time parameter is a counter of 4 bytes with a resolution
of 1 minute.
The zero value starts from the date and time: 00:00:00 01.01.2000
The date and time is set to Greenwich Mean Time (GMT) in
production and is stored under unlock mode.
Bits and Bytes assignment:
Address 7 6 5 4 3 2 1
0
1 0 Mi nutes / 10 Mi nutes % 10
2 Month %4 Hours/10 Hours % 10
3 Mont h / 4 Days/10 Days % 10
4 Years / 10 Years % 10
Minutes range is: 0-59.
Hours range is: 0- 23.
Day range is: 1-31.
Month's range is: 1-12.
Year's range is: 00-99.
Seconds range is: 0-59. Seconds field is relevant only for read &
write parameters.
From address 5 to 52 the data is according to the application
design.
5.10. Calculating Reader Session Duration
The total duration of a Reader Session can be calculated by using
the following formula:
Reader Duration=(Thw * 3 + Tbmm + 57) * 1.024 + Trw
Tbmm and Trw are command dependent.