LXE 1280 Reference Guide

Non-Form Messages 

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E-SW-LDSPLUSRG-G 

LDS Plus Reference Guide 

A DOS terminal is equipped with a beeper to get the operator's attention at certain occurrences. 
You can use this feature to cause the DOS terminal to beep in different patterns for different kinds 
of messages. The beeper is an additional means of communication between the host computer and 
the DOS terminal operator. 

You may wish to change the beep pattern when you send a non-form message that you want to 
call to the operator's attention.  

As with all beep pattern changes, you must select the appropriate control character and a beep 
pattern character to enable you to specify the number of beeps generated at the DOS terminal 
when it receives a non-form message.  

Control characters used when changing the beep pattern with a forced non-form message are:   

Q 

Y 

Activates Multiple Beeps. 

S Y 

•  Activates Barcode Mode. 
•  Activates Multiple Beeps. 

W Y 

•  Activates Auxiliary Input Mode. 
•  Activates Multiple Beeps. 

See Appendix D, “Code Tables and Character Sets”, for all control characters. 

The beep frame occupies a total of nine equal length units of time. Beep pattern ASCII characters 
are: Space and A-H. 

By default, errors are accompanied by three beeps -- any non-error is accompanied by one beep. 
For example, a form sent to the terminal causes the terminal to beep once when the form arrives in 
the computer. 

Refer to “Control Character (CTRL)”, documented previously in this chapter, for the full Beep 
Pattern Characters chart. 

See also Chapter 5, “Expanded Functions”.  Many expanded functions generate terminal beeps.