Code Tables - Hitachi IJ RX2 Technical Manual

5.4 Code Tables

5.4.1 Code Tables
(1)Transmission control
ASCII Name
02H
(start)
ETX
03H
(end)
ENQ
05H
(enquiry)
ACK
06H
(acknowledgment)
0EH
(shift out)
0FH
(shift in)
DLE
10H
(start of item)
DC2
12H
(retransmission)
DC3
13H
(retransmission)
NAK
15H (negative
acknowledgment)
ESC
1BH
(start of header)
ESC2
1FH
(start of header)
STX
Code that is transmitted immediately before text.
Code that is transmitted immediately after text.
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.
1 When the IJ printer is ready for reception, it transmits this code in
response to an "ENQ" code reception from the external device.
2
This code reports that text reception is normally completed.
SO When the 1-byte transmission mode prevails, this code is positioned
at the end of 2-byte code for transmission purposes.
SI When the 1-byte transmission mode prevails, this code is positioned
at the beginning of 2-byte code for transmission purposes.
This code is positioned at the beginning of printings for each print
item for transmission purposes.
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.
The same as DC2.
However, when receiving DC3, the IJ printer terminates printing
forcibly.
The IJ printer transmits this code if it is not ready for reception
1
when it receives the "ENQ" code from the external device.
2
This 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)
This code is positioned at the beginning of a header for transmis-
sion purposes. The header is a code that recognizes the transmission
data type and is transmitted next to STX.
(Existing machine / message specs.)
This code is positioned at the beginning of a header for transmis-
sion purposes. The header is a code that recognizes the transmission
data type and is transmitted next to STX.
Description
●Code tables 5-37