25
Movement of Data Carrier and Command Status
Section 4-1
Polling Function
When an ordinary auto command is executed, the ID Controller does not
respond to the host computer until the Data Carrier approaches. Only when
the Data Carrier approaches, the communication line between the host com-
puter and the ID Controller becomes busy. However, when a polling auto com-
mand is executed, the ID Controller returns a response to the host computer
on request. Therefore, the communication line ceases to be busy.
1,2,3...
1.
The host computer sends a polling auto command to Head 1.
2.
As soon as the ID Controller has received the command, it responds to the
host computer to indicate the reception of the command.
3.
The host computer can make an inquiry on the progress of the processing
or terminate the polling auto processing by using a subcommand.
4.
If the Data Carrier does not approach, the ID Controller responds to that
effect to the host computer in response to a subcommand making an in-
quiry.
5.
When the Data Carrier passes by the R/W Head, read or write processing
is performed.
6.
When processing has ended, the ID Controller responds to the host com-
puter to indicate the end of the processing in response to a subcommand
making an inquiry.
(Host computer)
(ID Controller)
(Data Carrier)
Subcommand
(Head)
(Inquiry to Head)
Subcommand
(Inquiry to Head 1)
Response
(Head)
Response
(Head not approaching)
(Head)
Response
(Head 1 processing end)
Not approaching
Not approaching
(Data Carrier)
Passing
Polling auto
command
Read/Write
processing
Summary of Contents for V600 RFID System
Page 1: ...OPERATION MANUAL Cat No Z193 E1 01 Board Type ID Controller V600 RFID System V600 CM1D...
Page 2: ...V600 RFID System V600 CM1D Board Type ID Controller Operation Manual Produced December 2003...
Page 3: ...iv...
Page 7: ...viii...
Page 10: ...xii...
Page 16: ...6 User I O Section 1 4...
Page 24: ...14 Outline Size Section 2 5...
Page 60: ...50 Communication Time Section 4 6...
Page 82: ...72 Index...
Page 84: ...74 Revision History...
Page 87: ...V6001 RFID System V600 CM1D Board Type ID Controller Cat No Z193 E1 01 OPERATION MANUAL...