LXE 1280 Reference Guide

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128 
Non-Form Messages 
LDS Plus Reference Guide 
E-SW-LDSPLUSRG-G 
Control Character and Automatic Transmit Buffer Length 
You can change the automatic transmit buffer length to cause the DOS terminal to automatically 
transmit when a barcode scan or auxiliary input fills a predetermined character position. The 
minimum buffer length that can be set is 0 (with @, 0x40) and the maximum buffer length that 
can be set is 496 (with ~, 0x7E). 
Rule:  The operator must scan data or initiate RS-232 input for automatic 
transmission to occur. 
For example: 
This message uses one of the ATBL control characters (I) to set the automatic transmit buffer 
length in the DOS terminal to 40: 
 
   
 
   
I
 is the control character that is used to set the 
automatic transmit buffer length in the terminal. 
 
   
 
   
E
 is the buffer length character that sets the 
automatic transmit buffer length to 40. 
<02S
I
E
C
R
L
F
 
Figure 4-26  Set the Automatic Transmit Buffer Length to 40 
The DOS terminal automatically transmits when a barcode or auxiliary input fills or exceeds the 
40th character position. 
Forced ATBL Control Characters 
As with all automatic transmit buffer length changes, you must select the appropriate control 
character and a buffer length character to enable you to specify the automatic transmit buffer 
length. 
Control characters used when changing the automatic transmit buffer length with a forced non-
form message: 
Control 
Character 
N/EF Character 
Required (Y/N) 
Forced Non-Form Message 
Effect on DOS terminal 
Changes the Buffer Length. 
K Y 
•  Activates Barcode Mode. 
•  Changes the Buffer Length. 
O Y 
•  Activates Auxiliary Input Mode. 
•  Changes the Buffer Length. 
Refer to “Control Character (CTRL)”, documented previously in this chapter, for the full 
Automatic Transmit Buffer Length chart. 
See also Chapter 5, “Expanded Functions.” Many expanded functions generate buffer length 
changes. See Appendix D, “Code Tables and Character Sets”, for all control characters.