HV ANSI Series Technical Reference Manual, MAN0340, Rev. A
4-3
8.
For each subsequent character, press
F4
before entering the numbers.
You can find a list of available ASCII characters with Hex and Decimal equivalents in
9.
If you mistype a character or number, press
F3
to backspace.
10.
To quit without saving, press
F1
.
11.
To program another key, press
F2
.
12.
To save the function key programming on 30-key and 40-key terminals, press
F5
. To save the
function key programming on 20-key terminals, press
F4
.
When saving your changes, the terminal will display:
Warning!
Do
not
remove power from the terminal while the above message appears on the
screen or you will corrupt
all
stored data. Should you remove power during this time, you will have
Notes
: You can disable function key programming by simultaneously pressing
CTRL
,
SHIFT
and
F3
while applying power. Refer to the
procedure for additional information.
To display the results of key programming on your terminal, you must enable ECHO. When
programming a combination of keys that use both modifier keys (such as
CTRL
and
SHIFT
), you
should enable the Shift Lock parameter to avoid conflicts with existing functions (such as
CTRL
,
SHIFT
and
F1
accesses the Parameter menu) as well as prevent Phantom Key syndrome.
Extended Key Functionality
Note
: Before attempting to program keys with extended functionality, you must enable the Break
Command parameter by using either the
Extended Key commands are special hex codes that you use while defining key output to control the
transmission and display of characters on both the terminal side and host side. For example, sending
the string “START” to the host, while displaying “RUNNING” on the terminal. Extended Key
commands fall into the following categories:
•
Break Commands
•
Output Control Commands
•
Pause Commands
•
Branching Commands
•
Handshake-Out Line Manipulation Commands
Break Commands
When a communication line is idle, the normal state of the terminal, the line is
marking
or transmitting
continuous series of ones. The marking signal is a voltage between -3 and -30 VDC. Break commands
place the transmit line into a condition known as
spacing
, where the terminal is sending zeroes for a
specified time (either 250 ms or 3.5 seconds). The spacing signal is a voltage b3 and +30 VDC.
Short Break
When defining key output, enter
BB
as the two HEX digits to specify a break of 250 ms.