Omron V500-R521B2 User Manual page 36

*2 Reading operation
Presence of the READ OK/NG signal output differs according to the reading operation setting.
(READ OK/NG signal output is only for V500-R521B1)
In case of single reading and plural reading:
When reading succeeded: OK signal is output.
When reading failed:
In case of continuous reading:
OK or NG signal after reading is not output.
READ OK/NG signal output p.28
NG signal is output.
Section 3
Function Explanation
V500-R521B2/C2
User's Manual
37