6 - 20
6 - 20
6. HOW TO COMMUNICATE WITH ID TAGS
6.3.7 Multi-repeat
With the multi-repeat communication specification, communication is performed while
one or more ID tags are being moved.
1. When the ID instruction execution request (Y14, Y1C) is turned ON, detection of ID
tags that enter the antenna communication area is started.
2. When an ID tag enters within the antenna communication area, communication with
the ID tag is started.
3. After communication with the ID tag ends, operation of the ID tag is disabled, and ID
instruction complete (X4, XC) turns ON. Detection of the next operable ID tag within
the antenna communication area is then started.
4. When result reception (Y16, Y1E) is turned ON, ID instruction complete (X4, XC)
turns OFF.
5. Subsequently, Steps 2 to 4 are repeated.
6. When the ID instruction execution request (Y14, Y1C) is turned OFF, detection of
operable ID tags is ended.
Within
communication area
Within communication area
Within communication area
(Movement of ID tag C)
ID instruction complete (X4, XC)
Communication with ID tag
(Movement of ID tag A)
ID instruction execution request (Y14, Y1C)
ID-BUSY(X3, XB)
(Movement of ID tag B)
Error detection (X5, XD)
Result reception (Y16, Y1E)
ID communication complete (X2, XA)
C
communication
B
communication
A
communication
Operation disabled
Operation disabled
Operation disabled
Communication is performed
with all operable ID tags that
enter the communication area.
Communication area
ID tag C
ID tag B
ID tag A
