Omron MicroHAWK Integration Manual page 327

Utilities
Counters by Serial Command
No-Read Counter
Sending <N> displays the total number of No-Reads that have occurred since the last reset.
No-Read Counter Reset
Sending <O> sets the No-Read Counter to 00000.
Trigger Counter
Sending <T> displays the total number of triggers since the last reset.
Trigger Counter Reset
Sending <U> sets the trigger counter to 00000.
Good Read/Match Counter (or Good Read Counter)
Sending <V> displays the total number of good reads matching the master symbol, or, if
Master Symbol is not enabled, the number of good reads since the last reset. This counter
is always enabled, but will only work as a match count when Master Symbol is enabled. If
Master Symbol is not enabled, this counter records the number of good reads. This count
can be requested at any time.
Good Read/Match Counter Reset
Sending <W> sets the Match Counter to 00000.
Mismatch Counter
Sending <X> displays the number of decoded symbols since the last reset that do not
match the master symbol.
Mismatch Counter Reset
Sending <Y> sets the Mismatch Counter to zero.
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MicroHAWK Engine Integration Guide