(14/23)
6) FIFO Repeat
After receiving command, the Module waits for the Tag to approach, then
communicates with the Tag and transmits a response. After communication
is completed, Tag will become inoperative. MODULE WILL CONTINUE
PROCESS UNTIL IT RECEIVES A STOP COMMAND. When
communicating with the Tag, THERE MUST ONLY BE ONE ACTIVE TAG
(A TAG THAT IS NOT PROHIBITED FROM OPERATION) within the
communication area.
♦
Operation Sequence
Upon receiving the command, Module awaits Tag to approach. When Tag
is detected, Module executes command and transmits a response.
Afterwards, Module repeats the same operation. Once process is executed
on a Tag, the Tag becomes inoperative, and thus a Tag will only be
processed once. When Module receives a STOP command, processing will
stop.
4. Controlling the Module from User board
4.1 Transmission Control Format
The frame format consists of 16 types of text in even number units from through “0”~
“F” (Band the terminator [Cr] (ASCII code : 0Dh).
Text
Terminator
Cr
Data
Number of
characters
Details
Text
1 ~ 272
Parameters of each command (“0” ~ “F”)
Terminator
1
Code (0Dh) indicating the completion of transmission
frame
(Transmission Control Procedure)
Receipt commences when a character is received first, and when [Cr] is received,
the frame is recognized as finished. If the interval between data exceeds 2 seconds,
a transmission error will be recognized.
272 characters or less
Tag
Detection
Tag
Detection
Tag
Detection
Tag
Detection
STOP
Command
Response 3
Respons
Response 2
(Truncation
Process)
Command Process
Command
Command
Response 1
Tag 3
Tag 2
Tag 1
Tag
Communication
Tag Operation
User
←
User
→
