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At any given time the current state (enabled/disabled) of
caps lock mode is reflected in the
"Cap!! Lock"
field of the
terminal configuration menu. When you enable or disable
the mode by altering the menu field from the keyboard and
then pressing the
"SAVE CONFIG"
key, you alter both the
active and non-volatile memory versions of that field.
When you enable or disable the mode using the escape
sequence, however, you only change the active value ofthe
"Cap!! Loc k"
field in the terminal configuration menu.
After a hard reset or turning off the power, the terminal
reverts to the mode specified by the
"Cap!! Loc k"
field in the
terminal configuration menu in non-volatile memory.
Caps lock mode, when enabled, has no effect upon data
received over a data comm line.
USER-DEFINABLE KEYS
The eight function keys
(D-B),
besides performing
their usual terminal control functions, can be defined ei-
ther locally by the terminal operator or remotely by a
program executing in a host computer. By "defined" it is
meant that:
1. You can assign to each key a string of ASCII al-
phanumeric characters and/or control codes (such as
<CR>
or
<LF».
2. You can specify each key's operational attribute:
whether its content is to be executed locally at the
terminal
(L),
treated as normal keyboard input
(N),
or
transmitted as a block to a host computer
(T).
3. You can assign to each key an alphanumeric label (up to
16 characters) which, in user keys mode, is displayed
across the bottom of the screen.
In the same manner you may also define the _
key,
except that there is no displayed label for it.
When defining a key from the keyboard, the key content
may include explicit escape sequences (entered using dis-
play functions mode) that control or modify the terminal's
operation. In addition the key content may include implicit
escape sequences that enable and disable various display
enhancements; they are implicit in that if you include
them by using the video enhancement keys the particular
enhancement shows in the user key definition but the
associated escape sequence does not.
The definition of each user key may contain up to 80 dis-
playable characters (alphanumeric characters, ASCII
control characters, and explicit escape sequence charac-
ters) plus a variable number of implicit escape sequences.
Defining Keys Locally
To define one or more keys from the keyboard first press the
_
and •
keys simultaneously. The user keys menu
shown in figure 3-2 then appears on the screen. Note that
the menu in figure 3-2 contains the default values for all of
Keyboard Control
fO
N
f~ETURN
f'1
Ii
LRBEL
I
f .-,
L
Ii
LRBEL
I
fJ
Ii
LRBEL
Ii
f4
Ii
LRBEL
Ii
f5
Ii
LRBEL
Ii
n;
Ii
LRBEL
I·
f?
Ii
LRBEL
I
f8
Ii
LRBEL
1=
Figure 3-2. User Keys Definition Menu
the fields. While the menu is displayed on the screen you
can reset the entire menu to the default values by pressing
the
"DEFAULT VALUES"
function key ( . . ).
Whenever the user keys menu is displayed on the screen,
the terminal is implicitly in format mode. The menu con-
tains a set of unprotected fields that you access using the
_
and. keys.
For each user key the menu contains four unprotected
fields:
ATTRIBUTE FIELD. This one-character field always
contains an uppercase
L, T,
or
N
signifying whether the
content of the particular user key is to be:
a. Executed locally only
(L);
b. 'fransmitted as a block to the host computer only
(T);
or
c. 'freated as normal keyboard input
(N).
If the terminal
is in local mode, then the content of the key is ex-
ecuted locally. If the terminal is in remote mode and
local echo is disabled
(OFF),
then the content of the
key is transmitted to the host computer. If the ter-
minal is in remote mode and local echo is enabled
(ON),
then the content of the key is both transmitted to
the host computer and executed locally.
The alphanumeric keys are disabled when the cursor is
positioned in this field. You change the content of this
field by pressing the
"NEXT CHOI CE"
and
"PREVIOUS
CHOI CE"
keys
(m
and _ , respectively).
LABEL FIELDS. The pair of eight-character fields to
the right of the word
"LABEL"
allows you to supply the
user key's label. When the terminal is in user keys mode,
the key labels are displayed from left to right in ascend-
ing order across the bottom of the screen (each displayed
key label occupies two lines). The first
LABEL
field in the
3-5
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