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Function Keys
fCHGl
~
MODE SEL/DIAG
Pressing MODE SEL causes the mode selection display to
appear on the screen.
This display lists the available
operating modes. These modes, and how to use them, are
described in the section "Procedures".
Mode selection can be requested at any time; it does not
affect the state of the machine other than breaking into a
chain of messages that is about to be written onto the
screen (if any).
The display on the screen when MODE SEL
is pressed is automatically stored by the system and can be
recalled later.
Do not, however, keep this display, nor
any other manual operations display, on the screen any
longer than necessary as, during this time, the system can
neither use the screen nor record errors.
The DIAG (diagnostic) function of this key is for service
personnel only.
CNCL
CNCL (cancel) is used to stop operations that have been
started but not completed (the ENTER key has not been
pressed). The operation is terminated according to the mode
that the screen was in when data entry started:
•
If the screen was under control of the system, and if
the command set is 3270, the message or reply is
de l etec.!.
If the command set is 1052, the message or
reply is marked with an asterisk.
•
If the screen was in manual operations mode, the display
is deleted, control returns to the system and the last
full picture that was displayed before manual operations
began is restored to the screen.
CHGDPLY
The CHG DPLY (change display) key causes the screen display
to change from the system message buffer to the manual
operations buffer, and vice versa. During manual operation,
the screen and keyboard are made available to the operating
system. During system operation the screen and keyboard
(except START, STOP and INTR) are made available for manual
operation.
INTR/LINE DISC
The INTR (interrupt) key is used to request an external
interruption.
The LINE DISC (line disconnect) function of this key is for
service personnel only.
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43 31 Processor Operators Guide
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