Chapter 5
Programming Via Escape Sequences
5–32
Laser Connection Detection Syntax
Esc –y <n> R
Binary Value
Function
0
1
2
4
8*
All Options Disabled
Laser Redundancy Check Enable
Laser Connection Detection ON
Continuous Read Mode
Trigger Latch Mode On
Values of n: 0 . . . 15
* Default
The default value of <n> is 8.
Note: This command allows several functions to be selected simultaneously.
To determine <n>, chose the wanted functions and add the corresponding
binary values.
Note: If laser connection detection is ON and a power up or reset occurs, the
laser will flash briefly.
Laser Connection Detection Example
To enable the laser connection detection, send the following escape
sequence:
Esc – y 2 R
This example assumes that the laser redundancy check, continuous read
mode, and trigger latch mode are disabled.
When enabled, the laser is turned on constantly instead of waiting for the
trigger to be pulled. Scanning, decoding, and transmitting decoded messages
occur continuously.
Certain functions can now only be performed periodically. Examples are
responding to commands such as to sound a tone or to send a no–read
response if a symbol has not been decoded within the laser shutoff delay
period. The shorter the laser shutoff delay, the more often system functions
are performed. System functions are also performed every time there is a
good read.
When disabled, the trigger is used to initiate and terminate laser scanning.
Note: Do not use this function with a Catalog No. 2755–G5 Hand–Held
Laser Scanner.
Note: When using a Catalog No. 2755–L2 scan head in continuous read
mode, the Package Detector must be disconnected.
Continuous Read Mode
Esc – y 4 R
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