Rockwell Automation 2755 AtomScan Bar Code Reader - Manual (Page 66)

5–21 Configuring Your Reader
Publication 2755-6.9
Relay–1 and Relay–2
•
Output On. Allows you to set the conditions that will output a
relay pulse either to pin 7 (Relay-1) or to pin 14 (Relay-2).
Parameter Description
Mismatch or No Read
Sends a pulse when the label’s data does not match that of the master label or the
label is not decoded before the end of the read cycle.
Match (for good read)
Sends a pulse when the decoded label matches the master label. (To send the pulse
on a good read, disable Match Code.)
Mismatch Sends a pulse when the label’s data does not match that of the master label.
No Read Sends a pulse when the label’s data is not decoded before the end of the read cycle.
Note: If Output On is set to Mismatch or No Read, Match, or
Mismatch, a relay pulse will not output unless Match Code is
enabled and a master label is downloaded into memory.
Note: To send a pulse on a Good Read, enable Match and
disable Match Code.
•
Polarity. Allows you to choose between positive and negative
output signals for the relay output pin that is enabled.
•
Pulse Width. Allows you to set the duration of the good
match/no read output signals at the relay output pin that is
enabled.
Note: After completing changes to Output On, Polarity, and
Pulse Width, press
[M] to advance to Bar Code Output and
continue scrolling through the Scanner Output options.
•
Bar Code Output. Allows you to choose the conditions that will
send label data (or no read messages) to the host.
Parameter Description
Good Read The reader will output on any good read independent of how Match Code is set.
Disabled The reader will not output label data or no read messages to the serial port.
Match (with Match
Code enabled) The reader will output when the label data information matches the master label.
However, if Match Code is disabled it will output on any good read.
Mismatch (with Match
Code enabled) The reader will output when the label data information does not match the master
label. However, if Match Code is disabled it will output on any good read.
Note: If Bar Code Output is set to Match or Mismatch, label data
will not output unless Match Code is enabled and a master label is
downloaded into memory.
•
When to Output. Allows you to choose when bar code data is
sent to the host.
Parameter Description
As soon as Possible
Causes bar code data (good reads) to be transmitted immediately upon a good
decode.
End of Read Cycle Causes bar code data output to be delayed until the end of the read cycle.