Intermec 6200 Reference Guide

R

Controls the length of time in milliseconds that a longĆrange scanner using a

dedicated UART emits an aiming beam.  Default value is zero.  All other

scanners should have this option set to 0.

Specifies the address of a dedicated UART.  The value must be a valid I/O

address in decimal form.  Default value: 488 decimal (1E8 hex).  

A value of 0 causes the driver not to look for a dedicated UART.

Sets the IRQ line, for the scanner UART interrupt.  

Default value: 5

Other valid settings:

4 for the COM1 port

3 for the COM2 port.

(HandĆheld scanners only), this option sets the value of the terminating

character of the packet sent by the scanner.  Default setting:  03 (ETX).  Other

valid settings include 10 (LF) and 13 (CR).

The scanner driver can be configured to use an integrated scanner or a tethered

scanner.  The integrated scanner uses a private UART on the 6300 Computer.

Whenever an 

OpenDriver

 call is issued to the scanner, the UART is initialized.

If a tethered scanner is used, COM1 is initialized for scanning.
For a tethered scanner, there is no attempt made to record and restore the comm

port, so any application multiplexing COM1 with the scanner is required to

open" the hardware for COM1 and initialize it after a 

CloseDriver

 call is made.

The previous paragraphs do not apply when you use a scanner that has its own

dedicated UART, such as an integrated scanner for the 6300 Computer.  In that

case, the communications with the scanner are completely separated from the

external communications ports.  For example:

hDRVR = OpenDriver(“scanner”, (LPCSTR)NULL, (LPARAM)NULL);

External RSĆ232 COM1 connection is disabled, COM1 is opened from Windows,

the scanner is powered on, and scanner data is delivered to the application in

focus as 

WM_CHAR

 messages.  These messages are distinguishable from standard"

WM_CHAR

 messages in that the virtual key code in 

wParam

 is the ASCII value of a

scanned character and 

lParam

 is sent as 

0x00000001

. 

 In particular, the OEM

nibble (bits 16ć23) containing the OEM scan code, is 0 (but only if the

EnableScanCodes, referred to in the definition on page 3Ć26, is set to FALSE.

CloseDriver(hDRVR, (LPARAM)NULL, (LPARAM)NULL);

External RSĆ232 communications connection is enabled, COM1 is closed, and the

scanner is powered off.