Variable usb_txtbfr – CognitiveTPG DLXi User Manual

Page 264

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P R I N T E R S E T U P

VARIABLE USB_TXTBFR

Function

Sets the size of the USB Buffer

Explicit Form

Implicit Form

VARIABLE USB_TXTBFR txt

ovf

V USB_TXTBFR txt

ovf

Parameters

txt

Size of the text buffer, in bytes. The
allowable range is 4096 to 65535, with a

default of 4096.
? returns the current setting.

ovf

Optional; specifies the size of the overflow
buffer, in bytes. The allowable range is 0 to

(txt - 1024).

NOTE: Turn the printer OFF and back ON again just
before you send this command to the printer. Some
printers may ignore the

TXTBFR

command if printer

power is not cycled first. The command will not take
effect until the power is cycled again after sending the
command.

Comments

When using this command, send it to the printer
with VARIABLE WRITE in a non-printing label

format. Do not use this command in stored label
formats.

The text buffer holds incoming ASCII data before it
is processed. The overflow buffer is part of the text

buffer. It begins filling after the rest of the text

buffer is full, at which time the printer will signal
the host to stop sending data.

Data sent via the serial port cannot overflow the
text buffer, providing hardware or software flow

control is enabled. Data sent via the parallel port
will overflow the text buffer if the size of the ASCII

label format is larger than (txt-ovf).

Increasing the text buffer size will decrease the size
of the image buffer.

Revision F, January 2012, CognitiveTPG

255

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