Read Options; Read Modes; Single And Multiple Read Modes; Figure 42: Scan Time - Opticon MDI-4000 Series Serial Interface Manual

Scan time output format:
Tms
where:
•
T is flexible length.
•
ms is maximum string length, which is 4.
TRIGn
or
RxD
TxD

Figure 42: Scan Time

8 Read Options

You can configure read options, such as read modes, trigger settings, illumination and aiming,
batch reading, and data editing.

8.1 Read Modes

Barcode reading starts when the trigger signal (TRIGn) is pulled low, when the trigger command
("Z") is received, or when an object is detected and the scan engine is in auto trigger mode.
8.1.1

Single and Multiple Read Modes

You can configure single read and multiple read modes for the scan engine.
Read Mode Commands
Read Mode
Single Read
Multiple Read 1
Multiple Read 2
Single Read Mode
In single read mode, the scan engine starts reading after a trigger press and continues reading
until a barcode is successfully decoded or until the read time expires. For more information, see
"Central Reading" on page
Multiple Read Mode 1 (Does Not Read the Same Data)
In this multiple read mode, the scan engine starts reading after a trigger press and keeps
reading (even after a barcode is successfully decoded) until the read time expires. To prevent a
"Z" Command
Scan Time
Command Description
S0 Single read in a single trigger press.
[D3P Multiple reads in a single trigger press: the
scan engine saves the data in memory and
does not read the same data.
S1 Multiple reads in a single trigger press: the
scan engine reads the same data.
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MDI-4000 Series Serial Interface Manual
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