IMS MFS 3270 master terminal format

You can use the IMS™ master terminal for messages, commands, and responses.

The IMS master terminal consists of two components of the IBM® 3270 Information Display System:

A 3270 display screen with 24 lines by 80 columns; a screen size of 1920 characters
A 3270 printer

All IMS system messages for the master terminal are sent to the display screen.

The format of the display screen is normally divided into five areas:

System status area (line 1)
Message area (lines 2-10)
Display area (lines 12-21)
Warning message area (line 22)
User input area (lines 23 and 24)

The following figure shows the format of the master terminal display screen.

Figure 1. Master terminal format

yy/mm/dd hh:mm:ss                                      IMS id
Message Area (9 lines)
--------------------------------------------------------------------------------

 
Display Area (10 lines) 
Warning Message Area (1 line)                         PASSWORD:
User Input Area (2 lines)

The following figure shows the format of the master terminal display screen in an extended recovery facility (XRF) environment.

Figure 2. Master terminal format in XRF environment

85/05/15 14:24:40  RSENAME: DFSRSENM   BACKUP  TRACKING IN PROGRESS   IMSA
Message Area (9 lines)
--------------------------------------------------------------------------------

 
Display Area (10 lines)
Warning Message Area (1 line)                         PASSWORD:
User Input Area (2 lines)

System status area

This area (line 1) displays the date, time, and IMS identifier:

Date: The current date
Time: The current time
IMS Identifier: IMS system ID

If the system is XRF capable, the following information is also displayed on the status line:

RSEname

Recoverable service element name

System

ACTIVE or BACKUP (field is completed following the initialization phase)

Phase

Blank or one of the following:

Initialization: Active or alternate system is in initialization phase
Synchronization: Alternate system processing SNAPQ checkpoint
Tracking in progress: Alternate system synchronized with active system and in the process of tracking active system
Takeover in progress: Alternate system in the process of taking over from active system
Awaiting I/O prevention: New active system is in I/O toleration mode and is awaiting completion of I/O prevention on the failing system prior to becoming a true active system

Message area

This area (lines 2 through 10) displays IMS system messages, messages from other terminals and programs, and responses to IMS commands, except responses to a /DISPLAY command. If the message area is full and more output needs to be displayed, a warning message is sent. Press the PA1 key to receive more output. New data is displayed on the top line followed by a blank line to separate new data from old messages.

Display area

This area (lines 12 through 21) displays the output from a /DISPLAY command. If the response to the command exceeds the size of the area, a warning message is sent.

Warning message area

This area (line 22) can contain one of the following warning messages:

MASTER LINES WAITING: A message being displayed in the message area has exceeded the available space and is only partially displayed.
MASTER MESSAGE WAITING: The message area is full, and a message from another terminal or program is waiting to be displayed.
DISPLAY LINES WAITING: The output of a /DISPLAY command exceeds the size of the display area.
USER MESSAGE WAITING: A message requiring the screen to be formatted differently is waiting to be displayed.

In all cases, press the PA1 key to receive the waiting output.

The literal PASSWORD is followed by an unprotected field with the nondisplay attribute at the end of line 22.

User input area

This area (lines 23 and 24) is used to enter IMS commands. It consists of two 79-character segments, so you can enter multisegment commands such as /BROADCAST, /CHANGE, /RMxxxxxx, and /SSR. For example, to send a message to all active terminals, enter /BROADCAST ACTIVE on line 23 and enter the message text on line 24. The cursor is initially positioned by IMS to line 23, your first input line.