Numeric Lock Feature - IBM 3270 Operator's Manual

When installed on a 3270 display station, the Numeric Lock
feature limits the characters that you can key into a field
designated by the program as a Numeric field. This feature was
designed primarily for use with Data Entry keyboards as an aid
to operators who rarely look at the screen. However, it can be
installed on any of the 3270 display station models.
You'll remember that when the cursor enters a Numeric field
on your screen your display station automatically shifts to
Numeric Mode if you have a Data Entry keyboard. When this
happens, if your display station has the Numeric Lock feature
installed, the only keys that you can key into the Numeric field
are the digits 0 through 9, special characters, period (.) and
hyphen (-), and the DUP key. All other keys are "locked out",
and pressing any other key will turn on the INPUT INHIBITED
indicator and disable your keyboard. Therefore, if you key a
non-numeric character into a Numeric field, you will realize your
error without looking at the screen.
In some cases, the job you're doing may require keying into a
Numeric field characters other than the few allowed by the
Numeric Lock feature. Therefore, if you are required to, you can
override this feature and key any "locked out" character into the
Numeric field. This is done by pressing the NUMER IC key or the
ALPHA key, depending on the character to be keyed. For
example, if a comma (,) must be keyed, press and hold the
NUMERIC key and then press the comma key. If you have a
series of characters to enter in Numeric Mode, press and release
the NUM LOCK key; then, press the character keys and again
press NUM LOCK. If an N must be keyed, press and hold the
ALPHA key and, then, press the N key. Using this method, you
can enter II10cked out" characters without error.
Extras for the 3270
10.9
Numeric Lock Feature