MiniScan Sales Guide
14
Trigger Options:
The customer may select among different trigger modes that make the MiniScan adaptable to the host
interface and application requirements:
Level Trigger (MS-954 MS-120x, MS-220x, MS-320x, MS-440x)
The laser is enabled and decode processing begins when the trigger line is activated. Decode
processing continues until a good decode occurs, the trigger is released, or the Laser-On time expires.
The laser is disabled once decode processing is complete. The next decode attempt will not occur until
the trigger line is released and then reactivated.
Pulse Trigger (MS-954, MS-120x, MS-220x, MS-320x)
The laser is enabled and decode processing begins when the trigger line is activated. Laser remains on
and decode processing continues regardless of trigger line until a good decode occurs or until the Laser-
On time expires. The laser is disabled once decode processing is complete. The next decode attempt
will not occur until the trigger line is released and then reactivated.
Continuous Trigger (MS-954, MS-120x, MS-220x, MS-320x)
The laser is enabled continuously and decode processing is continuously active. In this mode, the
scanner can be configured to scan and transmit a bar code, and then not decode the same bar code for a
set period of time (time between same bar codes) and/or not decode ANY bar code for a period of time
(time between different codes). Consult the integration guide for these programming configurations. This
allows the user to tailor the application to the rate at which the bar codes are presented. This mode
provides the fastest operation of the Miniscan and is intended for applications that are high speed. These
would include conveyor systems, automated processing equipment, OEM applications, etc.
Host Trigger (MS-954, MS-120x, MS-220x, MS-320x, MS-440x)
The laser is enabled and decode processing begins in response to an SSI Start Decode message from
the host. Refer to the MiniScan Integration Guide for more information. Decode processing continues
until a good decode occurs, an SSI Stop Decode message is received, or the Laser-On time expires. The
laser is disabled once decode processing is complete. The next decode attempt will not occur until the
next Start Decode message is received.
External Trigger (MS-954, MS-120x, MS-220x, MS-320x, MS-440x)
To activate this trigger a software command from the host system or a hardware signal from an external
device is necessary. In some unattended applications, it is necessary to have full control of the laser
scanner. This trigger mode allows the user to control the laser from an external host system like a PLC,
PC, photo sensor, switch closure, etc. This makes the MiniScan ideal for manufacturing environments,
robotic systems, automated kiosks, process controls, and conveyor systems.
Presentation Trigger (MS-440x)
In this mode, the MS44xx will automatically trigger itself when it sees a change of scene. If motion is
detected, then the system will turn on its illumination as needed and acquire the bar code. Additionally,
since this product uses imager technology, it can capture all types of bar codes omni-directionally –
adding to the users’ productivity. Note: This mode requires adequate illumination for the system to see
the image. It will not operate in a dark or dimly lit environment.
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