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XEROX APPLICATIONS
General Information
Xerox printers supported by the ALLY PLUS include the following
models: 2700, 3700, 4010, 4011, 4030, 4045, 4197, 4213, 4220, 4235 and
4700. The ALLY PLUS has a number of special features that support Xerox
printer functions.
Normally, the ALLY PLUS controls the formatting of documents received
from the IBM host by using the SCS (SNA Character String) commands
embedded in the document. The ALLY PLUS translates the SCS codes into
sequences of PFSs (programmable function strings).
If the user chooses a value of 00 for Option #00, the ALLY PLUS will
automatically program the PFSs for resetting, bolding, underlining and
overstriking appropriately for Xerox printers. If the user selects a value of
02 for Option #00, special escape sequences for a Xerox 4213 laser printer
will be programmed.
The ALLY PLUS also supports Xerox transparency, triggered by 36h in the
data stream. Refer to Option #61 in Section 3 Configuration for details
on Xerox 36h transparency. Additionally, PFSs %61-%63 are reserved for
Xerox applications that require special tray commands (refer to Section 4
Programmable Function Strings).
Other special Xerox features supported include Metacode, UDKs (user-
defined keys) and XPAF. ALLY PLUS implementation of these features is
described below.
User-Defined Keys (UDKs)
The ALLY PLUS offers special support for Xerox printers in XDPM mode,
also referred to as XES mode or UDK mode. XES mode is the native Xerox
print mode for Xerox 2700, 3700, 4030, 4045 and 4213 printers. The
XDPM mode on the 4235 also provides the XES command set.
Commands that control these printers are always preceded by an escape
character. The escape character is sometimes not a legal character in a
mainframe environment. Therefore, UDKs (or User-Defined Keys) were
implemented to allow any one of 256 different characters to be assigned as
the escape character. The ALLY PLUS keeps track of which character is
currently being used as the UDK.
SECTION 9