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the current prompt, and sends back the following message:
Byte position
Function
Possible values
1
Check Back
BEL (ASCII 07)
Last
Termination of
message
CR (ASCII 13)
Control Keys for Possible Programming
There are some keys on the 7802 RF Terminal keypad that when pressed, can transmit special ASCII
characters back to the host program. This feature might be used by a programmer to allow the operator to
review transactions.
You can use these keys for special program functions, such as scrolling through
data, backing up steps, jumping, finishing a process, etc.
The keys are as follows:
Key
Code transmitted to Host
UP ARROW key
FS (ASCII 28)
DOWN ARROW key
GS (ASCII 29)
LEFT ARROW key
RS (ASCII 30)
RIGHT ARROW key
US (ASCII 31)
BEGIN key
ETB (ASCII 23)
END key
CAN (ASCII 24)
SEARCH key
VT (ASCII 11)
The STATUS key is reserved to only display the Time and Date.
The Control keys can be used
without
pressing the ENTER key by using the
Control Keys Only
Terminal
Setup parameter. See the chapter on
RF System Setup
for details.
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