Omron V680 Series User Manual page 207

The response for the STOP query depends on the timing of when the query was acknowledged.
Examples are provided below.
Example: Processing was canceled when a STOP query was received before the Reader/Writer
detected an RF Tag.
Client
(host device)
WRITE DATA (Auto specified.)
STOP
Response (normal end)
Response (communications canceled)
Example: Processing was aborted when a STOP query was received after the Reader/Writer detected
an RF Tag but before it completed processing.
Client
(host device)
WRITE DATA (Auto specified.)
STOP
Response (normal end)
Response (communications aborted)
Host Communications Specifications
Server
(Reader/Writer)
Server
(Reader/Writer)
Section 7
RF Tag
RF Tag
RFID System
205
User's Manual
(Modbus TCP)