EMSA HS500E Benutzerhandbuch
C H A P T E R 3 : R F I D C O M M A N D S
3 . 1 . 1
C o m m a n d P a c k e t S t r u c t u r e Ta b l e
W o r d
#
#
M S B
L S B
D e s c r i p t i o n
01
00
06 (+
number of
additional
data
words, if
any)
number of
additional
data
words, if
any)
OVERALL LENGTH:
The first word in a command packet is the
Overall Length. This 2-byte value indicates the
total number of words in the command (including
this - the Overall Length field). This value will
always be at least six words (0x0006).
The first word in a command packet is the
Overall Length. This 2-byte value indicates the
total number of words in the command (including
this - the Overall Length field). This value will
always be at least six words (0x0006).
02
AB
03
COMMAND ID:
The second word contains the Command ID. For
example: Write Data Command = 0xAB03
example: Write Data Command = 0xAB03
See the Section 3.2.1 - RFID Command Table for
a complete list.
a complete list.
03
00 01
NODE ID:
The third word contains the Node ID of the
antenna / controller for which the command is
directed. This value should always be 0x0001 for
the HS500E.
The third word contains the Node ID of the
antenna / controller for which the command is
directed. This value should always be 0x0001 for
the HS500E.
04
00 32
TIMEOUT VALUE:
Word four in a command packet contains the 2-
byte Timeout Value. This value sets the
maximum length of time for which the HS500E
will attempt to complete the given command. This
“time limit” is measured in 1/10
Word four in a command packet contains the 2-
byte Timeout Value. This value sets the
maximum length of time for which the HS500E
will attempt to complete the given command. This
“time limit” is measured in 1/10
th
(.10) second
increments, where 0x0032 = 50 x .10 = 5
seconds.
seconds.
05
00 01
START ADDRESS:
The fifth word, Start Address, indicates the
location of tag memory where a read or write
operation will begin (when applicable).
The fifth word, Start Address, indicates the
location of tag memory where a read or write
operation will begin (when applicable).
06
00 01
READ/WRITE LENGTH:
The Read/Write Length is the sixth word (when
applicable) and represents the number of bytes
that are to be retrieved from or written to the
RFID tag.
The Read/Write Length is the sixth word (when
applicable) and represents the number of bytes
that are to be retrieved from or written to the
RFID tag.
H S 5 0 0 E – O P E R A T O R ’ S M A N U A L
P / N : 1 7 - 1 3 0 5 R E V 0 2 ( 1 2 - 0 5 )
P A G E 2 2 O F 8 2