IBM OS/390 User Manual

Page of 673
NetView Consoles
TSCF Consoles
Programmed Operator Subsystems
This chapter will only deal with MCS and SDSF consoles.
28.2.1 Controlling Consoles
There is more to operating an OS/390 system than just entering commands and
reading the messages. You should also be familiar with various console
configuration options. See Chapters 2 and 3 in 
MVS Commands for a description
of these console operations:
Defining and Changing Console Characteristics
Potential Effects of Altering Console Attributes
Changing Console Characteristics
Controlling System Messages and Commands
Defining Program Function Keys (PFKs)
Hardcopy Processing
28.2.2 Managing Display Consoles
For MCS consoles (those attached to non-SNA control units), you will need to
understand how to use some of the basic CONTROL (alias K) command
parameters when you first start operating an OS/390 system. Otherwise, you
can easily get your console 
locked up
″ 
by non-deletable messages or not
scrollable.
Here are some examples of the basic 
K
″ 
commands:
K - clear the screen.
K S - show the current settings so they can be over-typed.
K E,4 - delete the message on line 4.
K E,4,10 - delete the non-action messages on lines 4-10.
K E,D - delete a status display from a display area.
K A,NONE - get rid of display areas on this console.
Use the 
D C,K
″ 
command to display the CONTROL command functions and 
D
C,A
″ 
to display the status of active consoles.
See Chapters 2 and 3 and Section 4.7 in 
MVS Commands for details. (Most of
these do not apply to Extended MCS consoles.)
28.2.2.1 Console Modes
There are several 
modes
″ 
by which MCS consoles can operate and by which
messages are cleared from the screen. Type 
K S
″ 
to see the current setting of
the console you are sitting at, and then you can over-type what parameter
values you want to change. Here is an example of 
Roll
″ 
mode which is
recommended for unattended console operation:
 K S,DEL=R,SEG=28,CON=N,RNUM=14,RTME=001,MFORM=(T,J)
If there is always an operator present, you can use 
D E L = R D
″ 
which rolls the
deletable messages, but not those messages requiring action.
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