122
SECTIO
N
6
ID
Se
ns
or Unit
O
p
era
tion
RFID System
User's Manual
SECTION 6
Controlling the ID Sensor Unit
Commands Used to Write Data (Intelligent I/O Instruction Data
Transfer for Write and Write with Error Correction)
1) Use the user program to set the write data in the data storage area.
2) Use the user program to set the processing address, number of processing bytes, data storage word
address, and other parameters for writing RF Tag data in the Special I/O Unit Area.
3) Use the IOWR instruction in the user program to transfer the write data in the data storage words to
the ID Sensor Unit.
4) Use the user program to turn ON the Command Execution Bit (CIO n, bit 00) in the Special I/O Unit
Area.
5) When the ID Sensor Unit detects that the Command Execution Bit has turned ON, it turns ON the ID
Busy Flag (CIO n+7, bit 00).
6) The ID Sensor Unit writes the data to the RF Tag, places the Results Information (CIO n+8) and
Processing Results Monitor information (word n+9) in the Special I/O Unit Area, turns OFF the ID
Busy Flag (CIO n+7, bit 00), and turns ON the Normal End Flag (CIO n+7, bit 01) for one scan.
The Results Information (CIO n+8) will be held until the Error Reset Bit (CIO n, bit 01) is turned ON or
until the next communications command is received.
• By using the IOWR instruction, up to 2,048 bytes of data can be transferred in one scan.
(2)(4)
(3)
(5)(6)
(6)
(6)
(3)
Amplifier or Antenna
Special I/O
Unit Area
CIO n to
CIO n+6
CIO n+7
Data storage
area (1)
W
rite
data
CS/CJ-series CPU Unit
ID Sensor Unit
CIO n+
8
to CIO n+9
RF T
a
g
Summary of Contents for CJ1W-V680C11
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