Rockwell Automation 2755-DM9, -DM9E High Speed Decoder - Manual (Page 13)

Chapter 2
Description of Hardware
2–3
Figure 2.1
Catalog Number 2755-DM9, -DM9E
90-061-1
Fourteen LED indicators (Figure 2.2) provide an indication of the decoder
status. The indicators provide the following indications:
•
POWER - This green indicator illuminates when power is applied to the
decoder.
•
LASER ON - This red indicator illuminates when the decoder has enabled
the scan head to turn on the laser light source. The LED may illuminate
even if the scan head is disconnected or the “Laser On” switch for the
Catalog No. 2755-L7 or -L9 scan heads is in the OFF position.
•
TRIGGER ACTIVE - This yellow indicator illuminates when the decoder
is in the triggered mode and scanning has been triggered by:
1. The package detector connected to the scan head.
2. A Start Scan command sent by the host.
3. The internal timer.
The LED remains on until a trigger OFF command is received.
•
VALID READ - This green indicator illuminates momentarily whenever
the decoder has met the fields per scan and capture count parameters.
Indicators