Справочное Руководство для LXE 1280

204 

Control Characters Used for Inbound Forms 

LDS Plus Reference Guide 

E-SW-LDSPLUSRG-G 

The control character for an inbound form identifies the message as a form to the host computer, 
and it indicates whether a sequence number is included. 

There are two possible control characters for inbound forms – left apostrophe ( ‘ ) or the lower 
case letter a: 

Indicates that it is a form message without sequence numbers. For 
example: 

<E3M‘7B] 

where 

<E3 is a message from terminal E3. 

‘ identifies a form message without sequence numbers. 

7B is the form number, as assigned by the host computer or contained 
in a stored form, and barcode entry was activated by the form. 

Indicates that it is a form message with sequence numbers. For example: 

<E3Ma57B] 

where 

<E3 is a message from terminal E3. 

a identifies a form message with sequence number 5. 

7B is the form number, as assigned by the host computer or contained 
in a stored form, and barcode entry was activated by the form. 

The beep frame occupies a total of nine equal length units of time. 

Space  

(hex 20) 

No beeps 

A 

One short beep (B - - - - - - - -) 

B 

Two short beeps (B - B - - - - - -) 

C 

Three short beeps (B - B - B - - - - - -) 

D 

Four short beeps (B - B - B - B - -) 

E 

Five short beeps (B - B - B - B - B) 

F 

Extra long beep (BBB - - - - - -) 

G 

Extremely long beep (BBBBBBBBB) 

H 

Three long beeps (BB - BB - BB -)