Microscan EZ Match, User Manual

Page: 100 / 431

4-32
EZ Match User’s Manual
USB HID Interface
Configuration Exceptions for USB
Read Cycle Mode
By default, the imager operates in Continuous Read Mode . If the imager is configured
using Data Matrix symbols, the read cycle mode should be the last item changed before
saving the configuration settings and beginning operation.
This is because all read cycle
modes other than Continuous Read Mode require a trigger event. In USB, a trigger event
can only be initiated by serial command. To send a trigger command the imager, the host
application must establish a connection with the imager’s
Microscan HID interface and
send the trigger command in a Microscan HID Report .
The following read cycle conditions are required for the USB EZ Match:
Important:
• To use Level Mode , you must enable Undelimited Start Trigger Character <K229>
and Undelimited End Trigger Character <K230> .
• To use Edge Mode , you must enable and use the Undelimited Start Trigger Character
<K229> .
• To use Serial Mode , you must use the Delimited Trigger defined by <K201> , or enable
and use the Undelimited Start Trigger Character <K229> .
• To use Serial and Edge Mode , you must use the Delimited Trigger defined by
<K201> , or enable and use the Undelimited Start Trigger Character <K229> .
Communications
For the USB version of the EZ Match, no communications serial commands have any
effect on the imager except the following:
• USB HID Report Status
<K149>
• Preamble <K141>
• Postamble <K142>
EZ Button
Default on power-on cannot be disabled <K770,,default> = <K770,,1> . This ensures a
level of safety for recovering from misconfigured Power-On settings <Z> . However, it is not
foolproof, as defaulting with the EZ Button only recovers Custom Default settings, which
can be misconfigured themselves. For this reason,
do not save to Custom Default settings
<Zc> until the imager’s configuration has been tested.
Symbologies
If the imager is going to be configured with Data Matrix symbols, do not disable Data Matrix
<K479> . Disabling Data Matrix will prevent the imager from reading configuration symbols.
Serial Cmd: < K200,read mode >
Default: Continuous
Options: 0 = Continuous Mode 1 = Coninuous Read 1 Output Mode
2 = Level Mode 3 = Edge Mode
4 = Serial Mode 5 = Serial and Edge Mode