Wasp WDT2200 Operation Manual page 12

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User Mode Commands:
Command Usage
RUN Runs the selected executable program
TER Terminal emulation mode or FormCaching operation
COM Kermit server mode
DIR Display RAM disk file directory
ERA Delete a file from RAM disk
TYP Dump the content of a file to the LCD
CPY Copy data from a device/file to another device/file
SET Set real time clock, scanner type or power-on logo
3.2.2.1 RUN
< RUN PROGRAM >
Filename:
NULL
3.2.2.2 TER
The TER command puts the WDT2200 in either Terminal Emulation operation or FormCaching
operation.
Terminal Emulation Operation. When EXEC transfers control to this EPROM-resident
application program, the WDT2200 operates as a dumb ASCII terminal while exchanging data with
a Host computer. Data input from scanning bar code labels or key entry will be sent to the portable
terminal's RS-232 port. In order to carry out a successful file transfer, communication parameter
settings such as baud rate, data bits, parity, stop bits and flow control, must match the setting at the
Host end. Data received from the serial port is displayed on the LCD screen.
The functionality of the WDT2200 in terminal mode depends on the format configured in the
Terminal Control Table. The WDT2200 is either configured as free format processing or forms
based processing. The WDT2200 examines the "data buffer" and determines if host data transfer is
required. If a terminating condition exists by the reception of a terminating character, the WDT2200
outputs the buffer to its RS232 port. Data transfer between the host machine and the WDT2200 is
primarily controlled by the terminating conditions specified in the Terminal Control Table.
In the terminal application, the program further distinguishes character mode communication from
block mode communication. Character mode communication dictates that the WDT2200 send every
character, one at a time, to the host. Normally, character mode communication uses None protocol,
otherwise there will be an overwhelming protocol overhead. The input characters may come from the
keypad or barcode scanner, whichever comes first. Data characters sent over from the host system
After a program is downloaded to the handheld unit, the user may invoke the
RUN command and press [→ → → → ] key to display the executable files stored in
memory, then press [ENT] to run the program. Pressing [CMD] then [Alpha]
and then pressing any key will return the WDT2200 to the User Mode menu.
© 2003 Wasp Technologies, Inc.
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