QMS 4032 Specifications Page 155

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Your QMS 3260/4032 Print System supports PS Protocol, a protocol for
communication between the printer and a host computer over the parallel, optional
serial, and optional network interfaces. This binary communications protocol (BCP)
allows any 8-bit binary value (0-255) to be treated as data, while allowing a few of the
values to function as special control characters. When communicating 8-bit binary
data in binary or binary fixed mode, the printer uses the quoting mechanism of the
binary communications protocol to distinguish between the special control characters
and print job binary data.
To differentiate data from the special control characters, any data that is the same as
one of the following special control characters must be quoted.
A data byte is quoted by replacing it with a two-character sequence. The first charac-
ter is a ^A (ASCII hex 0x01), and the second character is the character itself XORed
with the ASCII value 0x40. For example, to send the value 0x14(^T) as data, send the
two-character sequence 0x01 0x54 (^a T) instead. (ASCII “T” is the result of XORing
^T with 0x40).
This method of quoting guarantees that whenever the printer receives any of the eight
control characters, the control function is intended regardless of whether the preced-
ing character is a ^A. Any data byte not equal to one of the eight special control char-
acters is transmitted by sending the data byte.
ASCII
Keyboard
ASCII Name ASCII Hex Control Function
^A
^C
^D
^E
^Q
^S
T
^\
SOH
ETX
EOT
ENQ
DC1
DC3
DC4
FS
0x01
0x03
0x04
0x05
0x11
0x13
0x14
0x1C
Quote data character
Abort job and flush to end of file
End-of-file marker
(Reserved for future use)
XON in XON/XOFF flow control
XOFF in XON/XOFF flow control
Job status request
(Reserved for future use)
EDNord - Istedgade 37A - 9000 Aalborg - telefon 96333500
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