Code; Ieee 1284 Parallel Interface; Modes - Epson T88IIIP - TM B/W Thermal Line Printer Technical Reference Manual

A.1.4 Code
The hexadecimal numbers corresponding to the XON/XOFF codes are shown below.
❏ XON code:
❏ XOFF code:
Note:
When the printer goes from offline to online and the receive buffer is full, XON is not transmitted.
When the printer goes from online to offline and the receive buffer is full, XOFF is not transmitted.
When memory switch MSW 1-3 is off, XON is not transmitted as long as the printer is offline, even if a
receive buffer full state has been cleared.
A.2 IEEE 1284 Parallel Interface
A.2.1 Modes
The IEEE 1284 parallel interface supports the following two modes.
Table A-4 Parallel modes
Mode
Compatibility mode
Reverse mode
Compatibility mode
Compatibility mode allows data transmission from host to printer only: Centronics-compatible.
Specifications
• Data transmission:
• Synchronization:
• Handshaking:
• Signal levels:
• Connector:
• Reverse communication:
*A rule above a signal name indicates an
Rev. A
11H
13H
Communication direction
Host → Printer communication
Printer → Host communication
8-bit parallel
Externally supplied STROBE* signals
ACK* and BUSY signals
TTL-compatible connector
ADS-B36BLFDR176 (HONDA) or equivalent product
(IEEE 1284 Type B)
Nibble or byte mode
" "
L active signal.
TM-T88II/T88III Technical Reference Guide
Other information
Centronics-compliant
Assumes a data transfer from an asynchronous printer
Interfaces and Connectors A-3