IBM 3174 Reference Guide

Printing Screen Images (Local Copy)
Using an ASCII Printer as a 3270 Printer
ASCII printers can be used as If they were 3287 printers. They can be used as host
printers, shared printers, and local copy printers.
Here are some Items you should consider when using this function:
• Some features of the 3287 printer, such as Extended Character Set Adapter and
Extended Print Buffer, are not supported.
• The maximum print position (MRP) Is 255.
• Lines per Inch (LPI) Is always set to match the ASCII printer default. It cannot
be changed at the host.
• The ASCII printer must provide upper- and lowercase, or be able to convert
received characters Into all-uppercase or all-lowercase characters.
• The default page length Is 66 lines.
• If the printer does not accept form feeds, the controller sends line feeds (LF)
until the page length count Is reached.
• Printer conditions such as Check and Hold Print can be used, but no Indicator
lights are provided.
• The ASCII printer cannot bring up the Connection Menu or use the test
functions available to the ASCII display station.
IBM 3287 printers provide several operator controls. The ones provided are
available only If the ASCII printer has a keyboard. The following table shows you
the 3270 printer key with the corresponding ASCII printer mapping.
3270 Printer Key ASCII Printer Mapping
ATTENTION CTRL A (Active In SNA SOS mode)
HOLD PRINT CTRL 8
ENABLE PRINT CTRL 0
CANCEL PRINT C (Active in SNA SCS mode)
PA1 1 (Active In SNA SCS mode)
PA2 2 (Active In SNA SCS mode)
FORM FEED CTRL L
INDEX CTRL J
Printing Screen images (Local Copy)
The print screen Images (local copy) function allows you to obtain a printed copy of
your display screen. You can copy to a printer attached to another port of the 3174
controller. The local copy function Is controlled by the printer authorization matrix
Information that Is part of the 3174 configuration viewable In online test mode. The
matrix defines printer classes to be assigned to particular printers, and It also
defines which displays can use which printers.
The copy printer operation Is normally limited to terminals and printers both
operating In 3270 mode. However, this support Is extended to allow a 3270
terminal being used as an ASCII terminal to perform a local copy. The target
printer must be In 3270 mode, and the IDENT process that Is used to alter the copy
printer assignment (If necessary) must be done while the 3270 terminal Is
connected to a 3270 host or Is displaying the Connection Menu.
Chapter 3. Using Your ASCII Terminal 3-21

IBM 3174 Specifications

General

Brand	IBM
Model	3174
Category	Controller
Language	English