Usb-Com (Rs-232 Simulated) Interface - HP Linear Barcode Scanner II Programming Reference Manual

USB-COM (RS-232 Simulated) Interface

The USB-COM interface is used to simulate the operation of a "standard RS-
232" interface between scanner and host when using a USB connection. The
USB-COM interface and associated drivers on the Host allow the system to
present a virtual COM Port to an application. This port can be used by OPOS/
JavaPOS or a legacy Serial application to communicate with the scanning device.
When using the HP OPOS or JavaPOS drivers, certain configurable scanner set-
tings should not be changed to ensure proper operation. The user should not
change the label identifiers, host command characters, or enable ACK/NAK
protocol in USB-COM when using the drivers.
The programming bar codes in this chapter allow modifications to the standard
USB-COM interface.
Programming Reference Guide
I D
NTERCHARACTER ELAY
B ASCII BEL
EEP ON
B N F
EEP ON OT ON ILE
on page 17
ACK C
HARACTER
on page 17
NAK C
HARACTER
ACK NAK T
IMEOUT
ACK NAK R C
ETRY OUNT
ACK NAK E H
RROR
I T
NDICATE RANSMISSION
D C
ISABLE HARACTER
E C
NABLE HARACTER
on page 14
on page 15
on page 15
on page 18
V
ALUE
on page 19
on page 20
ANDLING
on page 21
F
AILURE
on page 21
on page 22
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