9560 Transaction Manager User's Manual - Intermec

9560 Transaction Manager User’s Manual
G-16
scanner
A device that examines a spatial pattern, one part after another, and generates
analog or digital signals corresponding to the pattern. Scanners are often used
in mark sensing, pattern recognition, character recognition, and bar code
recognition. The scanner converts bar code symbols to electrical signals for
input to a bar code reader decoder for processing and subsequent output
through a data communications interface.
scanner mode
One shot or Automatic. The number of good decodes allowed per trigger
event. One shot accepts one bar code label per event. Automatic accepts
multiple bar code labels per event. To read the same label twice in Automatic
Mode, you must move the scanner off that label for at least 2 seconds.
scanner timeout
Maximum time the laser is on. The laser will automatically turn off if timeout
occurs before the trigger is released.
SEL
Select character
Sent by the host to request if the reader can accept data. For User Defined
Multi-Drop protocol, a unique character should be defined for each reader on a
data line.
Select sequence
A controller command that asks if a polled device can receive data.
solicitation event
A communication event that initiates data transmission. The solicitation can be
either a poll or select sequence. To enable solicitation, define POL to be other
than NULL.
SOM
Start of Message character
Start of Message. The first character in a message or data block sent to or
received from the host.
SOP
Start of Program character
Start of Program Block character
Indicates the beginning of a block of IRL program statements.