Hitachi UX2 - Code Table

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1.4 Code Table
1.4.1 Code Table
(1) Transmission Control
ASCII
Name
Description
02H
STX (start)
Code that is transmitted immediately before text.
03H
ETX (end)
Code that is transmitted immediately after text.
05H
ENQ (enquiry)
This enquiry code is used when the external device checks
whether the IJ printer is ready for signal reception. This code
must be transmitted before data transmission to the IJ printer.
When the IJ printer is ready for reception, the "ACK" code is
transmitted after ENQ code reception. If the IJ printer is not
ready for reception, the "NAK" code is transmitted.
06H
ACK
(acknowledgment)
①①When the IJ printer is ready for reception, it transmits this
code in response to an "ENQ" code reception from the
external device.
②This code reports that text reception is normally completed.
0EH
SO (shift out)
When the 1-byte transmission mode prevails, this code is
positioned at the end of 2-byte code for transmission
purposes.
0FH
SI (shift in)
When the 1-byte transmission mode prevails, this code is
positioned at the beginning of 2-byte code for transmission
purposes.
10H
DLE (start of item)
This code is positioned at the beginning of printings for each
print item for transmission purposes.
12H
DC2
(retransmission)
This code is transmitted if the printings need to be changed
before the printing of the contents transmitted to the IJ printer
while the overwrite-protected mode prevails. After receipt of
this code, the IJ printer transmits the ACK code and becomes
ready for reception. However, if the IJ printer is off-line, the
"NAK" code is transmitted.
13H
DC3
(retransmission)
The same as DC2.
However, when receiving DC3, the IJ printer terminates
printing forcibly.
15H
NAK
(negative
acknowledgment)
①①The IJ printer transmits this code if it is not ready for
reception when it receives the "ENQ" code from the external
device.
②This code reports that text reception is not normally
completed (when, for instance, the received data is in
transmission error or an unregistered print data number is
received).
1BH
ESC
(start of header)
This code is positioned at the beginning of a header for
transmission purposes. The header is a code that recognizes
the transmission data type and is transmitted next to STX.
(Existing machine / message specs.)
1FH
ESC2
(start of header)
This code is positioned at the beginning of a header for
transmission purposes. The header is a code that recognizes
the transmission data type and is transmitted next to STX.