Omron V780-Series User Manual page 234

7 Ethernet/IP Communications
Executing Other Commands (such as SET READER/WRITER and
GET READER/WRITER INFORMATION)
EXE EXE
Command code
Command
Command
Area
parameters
Command data
Update counter
response
READY READY
BUSY BUSY
NORM NORM
ERR ERR
Response
Area
Update counter
Error code
Response
information
Response data
1. The command code, command parameters, and command data are set from the PLC while the READY sig-
nal is ON. The value of the update counter response is matched with the value of the Update counter in the
V780 response area.
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.
4. When the processing at the Reader/Writer side ends normally, the Reader/Writer sets the error code,
response information, and response data, adds 1 (increments) to the update counter value, and then turns
ON the NORM signal. Moreover, the Reader/Writer turns OFF the BUSY signal.
5. The user (PLC) detects a change in the update counter value, confirms that the NORM signal has turned
ON, and acquires the response data. After the acquisition of data, the user (PLC) updates the update
counter response value in accordance with the value of the Update counter in the V780 response area, and
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 OFF the NORM signal and turns
ON the READY signal.
7. When the processing at the Reader/Writer side ends in an error, the Reader/Writer sets the error code and
response information, and turns ON the ERR signal. At this time too, the Reader/Writer adds 1 (increments)
to the update counter value. And also turns OFF the BUSY signal.
8. The user (PLC) detects a change in the update counter value, confirms that the ERR signal has turned ON,
acquires the error code and response information, and then checks the error contents. After checking, the
user (PLC) updates the update counter response value in accordance with the value of the Update counter
in the V780 response area, and turns OFF the EXE signal. This tells the Reader/Writer to stop execution.
9. When the Reader/Writer receives the instruction to stop execution, it turns OFF the ERR signal and turns ON
the READY signal.
7 - 82
0000 hex 0001 hex
0000 hex 0001 hex
1 2 3 4 5 6
UHF RFID System V780-series Reader/Writer User's Manual (EtherNet/IP
0000 hex
0000 hex 0001 hex
7
0001 hex
0000 hex
8 9
TM
) (Z402)