Omron V680S-HMD64-EIP User Manual page 185

 Using the Auto Communications Option
EXE
Command code
Command
Area
Command parameters
Command data
READY
BUSY
NORM
Response ERR
Area
Response code
Response information
Response data
Communications field
1. The command code, command parameters, and command data are set from the PLC while the READY
signal is ON.
2. The user (PLC) turns ON the EXE signal. This tells the Reader/Writer to start execution.
3. When the Reader/Writer receives the instruction to start execution, it turns OFF the READY signal and
turns ON the BUSY signal. From this timing, the reader / writer keeps waiting for the RF tag to enter the
communication area.
4. The Reader/Writer detects an RF Tag and when communications end normally, it sets the response code,
response information, and response data and turns ON the NORM signal. At this time, the NORM LED
(green) lights up once.
5. The user (PLC) detects that the NORM signal has turned ON and reads the response data. After reading
the data, the user (PLC) turns OFF the EXE signal. This tells the Reader/Writer to stop execution.
6. When the Reader/Writer receives the instruction to stop execution, it turns ON the READY signal and turns
OFF the BUSY signal and the NORM signal.
7. If the BUSY signal is ON and the user (PLC) wants to cancel Auto communications, the user (PLC) turns
OFF the EXE signal. This tells the Reader/Writer to stop execution.
8. When the Reader/Writer receives the instruction to stop execution, it turns ON the READY signal and turns
OFF the BUSY signal and the ERR signal.
RF Tag
1 2 3 4 5
Host Communications Specifications
6
Section 7
7 8
RFID System
183
User's Manual
(EtherNet/IP TM )