Promag TR515 User Manual page 16

Get specified record ('G', 47H)
Command GNNNN
Reply ANNNN,ccc...c,E,YYYY/MM/DD,hh:mm:sscc
NNNN- record number (starting from 0000) in Hex form, ccc...c- ID-code, E-
event (0: OUT, 1: IN), YYYY- year, MM-month, DD-date, hh-hour, mm- minute,
ss- second, cc- checksum
This command is used to retrieve the database record with a specified
number. Record number must be supplied in Hex format, leading zeroes must
be preserved or error 04 will be returned. Record numbers start from 0000.
Specifying record number beyond N-1 (where N is the number of records in the
database returned by the N-command) will cause error 06.
Returned data string contains the record number, ID-code of the ID-card
that was used to create this record, event code (i.e. which button was pressed),
and the date and time of record creation.
The TR515 verifies all database records before sending them out to the PC.
This is done because the FLASH memory may actually contain a garbage data.
There is a special M-command that lets you initialize the database in such a
way that it appears to be 100% full (you can "recover" entire database memory
contents then). Naturally, some database records may turn out to contain
invalid data.
Database record validity is verified on a field-by-field basis. Should the field
turn out to be invalid, its contents are substituted for a "safe" default data:
•
ID-code. If ID-code turns out to contain illegal characters (i.e. with
codes outside of 20H-7FH range), then these characters are
substituted for "_". If ID-code length is outside of valid margins (<1 or
>40) then entire ID-code is substituted for the following code:
"0000000000" (ten '0' characters)
•
Date. If the date is invalid (i.e. December, 32
(1999/01/01) is used
•
Time. If the time is invalid (i.e. 24:00:00) then default time is used
•
Event. if Event code exceeds 1, then this field is substituted for "0".
TR515 User's Manual
Possible error codes: 04, 06, 07
14
nd
) then default date