IBM 3174 Reference Guide

ASCII Host Communications
Canceling a Print Request
When a local copy Is requested but has not yet begun printing, that is, 0-*nn is not
displayed, you can cancel it by using the DEVCNCL function. Your keyboard is
unlocked and the print request is discarded. You can cancel a request while
X 0-0 ( ) orX 0-0 ( ) ( ) is displayed on the status line.
Note: If you are typing ahead, DEVCNCL may not take effect. See "DEV CNCL
(Device
Cancel)" on page 3-10.
Host-Initiated Locai Copy
It is possible for the host application you are using to create a local copy of a
screen it has sent to your display. When this occurs, X ( ) is displayed on the
status line from the time of the initial request to the end of the print. The keyboard
is not unlocked until the print is completed or terminated.
ASCIi Graphics Locai Copy
You can display on your terminal a graphics image with text, but when you create a
local
copy of your screen (that is, when you print your screen), you will get only
text, or alphanumeric data, on the printed copy. The printer does not print the
graphics image on a local copy.
ASCII Host Communications
You can begin communicating with the ASCII host when the READY message
appears on your screen.
Note: The READY message appears when your terminal is connected to the modem
for manual call ports on an ASCII host. On a leased line, the host is
assumed to be available and the READY message appears whenever the port
is connected.
To connect to an ASCII host, you can use the procedure shown in "Connecting to a
3270 Host" on page 3-2.
The rules that you need to follow when your terminal is communicating with an
ASCII host are determined by the ASCII host application. Contact your system
administrator if you have questions about the ASCII host.
All key sequences that can be used when you are communicating directly with the
ASCII host can also be used when you are communicating through a 3174
controller to an ASCII host, except for the ESC-Backspace sequence, which is used
to call the Connection Menu.
You do not need to reset all the setup options for your terminal to match the ASCII
host to which you are connecting. The 3174 corrects what is configured for that
host.
Chapter 3. Using Your ASCII Terminal 3-23

IBM 3174 Specifications

General

Brand	IBM
Model	3174
Category	Controller
Language	English