Microscan MS-810, User Manual

Page: 40 / 144

Chapter 2
2-18
MS-810 Industrial Scanner User’s Manual
2–Menu Conf
ig
.
External Edge
As with Level, Edge allows a read cycle to be initiated by a trigger signal from an
object detector when it detects the appearance of an object (rising edge). But unlike
Level mode, the removal of an object (falling edge) does not end the read cycle. With
Edge enabled, the read cycle ends with a good read output, a timeout, or a new trig-
ger (
figure 2-6 on page 2-18 ).
Figure 2-6 External Edge Trigger Signals
Serial Data
The scanner accepts an ASCII character from the host or controlling device as a trig-
ger to start a read cycle. Serial data trigger behaves the same as External Edge.
Serial Data & External Edge
The scanner accepts either an external trigger or a serial ASCII command to start a
read cycle.
End of Read Cycle
Default: Timeout
Options: Timeout, New Trigger, Timeout & New Trigger
Allows you to choose the circumstances that will end the read cycle. The read cycle is
the time during which the scanner will receive and process label data. When the Trig-
gering Mode option is set in an External or Serial mode of operation, the trigger event
initiates the read cycle.
Note: When operating in Continuous Read or Continuous Read 1 Output, the scanner
is always in the read cycle.
Subsequent rising edge trigger
Object # 2, moving in front of the detector's beam, causes
a second trigger (rising edge trigger) signal to be sent to
the scanner. This signal initiates a new read cycle
and
ends the previous read cycle
provided
that New Trigger or
Timeout and New Trigger is enabled and a good read or
timeout has not already occurred.
2
Object
detector
First rising edge trigger
Object # 1, moving in front of the detector beam, causes
the first trigger (rising edge trigger) signal to be sent to the
scanner, initiating the read cycle.
1
Object
detector