IBM 3270 Operator's Manual page 95

screen. The field names are still displayed, however, and the
operator begins keying from the next source document.
Errors that turn on the only error indicator on your display
station (INPUT INHIBITED) are those that you can make while
keying from a source document. If we watched long enough, we
might see our experienced operator make a mistake that would
immediately cause the input from the keyboard to be inhibited.
However, we could have a long wait. For this reason, listed below
are the operator mistakes that cause the keyboard input to be
inhibited.
When the cursor is located within a protected field, the
INPUT INHIBITED indicator will turn on if the operator:
1. Attempts to change the protected data by keying any
alphameric character.
2. Attempts to erase protected data by pressing the ERASE
EOF key or the DEL key.
3. On a Data Entry keyboard, attempts to enter an alphabetic
character in a numeric field without first pressing the
ALPHA shift key.
When the display is in Insert Mode, the INPUT INHIBITED
indicator will turn on if the operator:
4. Attempts to insert too many characters in a field. (As a
general rule, the number of characters that can be inserted
is limited. Usually, the limit is one character less than the
nu mber of blank positions between the last displayed
character and the first displayed character in the next field.
For an example of the I nsert limit, reread the discussion of
the INS MODE key.)
Before pressing the RESET key to turn off the indicator, you
should determine why it turned on. The INPUT INHIBITED
indicator informs you that the input from your keyboard has
been inhibited. If you have made an error or attempted an
incorrect procedure, you want to be able to correct your mistake
quickly and continue with your work.
The User's Guide for the program that you are working with
explains the rules and procedures you must follow when doing
your job. Violation of one of these rules or procedures is not
considered an error by your display station; therefore, no
indicator will come on. However, this type of error is detected
by the program, and a message will normally be displayed on
your screen to inform you of your mistake and tell you how to
correct it.
Operating the 3270
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