Appendix A Interfaces And Connectors; Rs-232 Serial Interface; Interface Board Specifications (Rs-232-Compliant - Epson T88IIIP - TM B/W Thermal Line Printer Technical Reference Manual

Appendix A
Interfaces and Connectors
A.1 RS-232 Serial Interface
A.1.1 Interface Board Specifications (RS-232-compliant)
Table A-1 Serial interface specifications
Item
Data transfer method
Synchronization
Handshake
Signal level
Bit length
Baud rate
Parity check
Parity selection
Stop bit
Connector
Rev. A
Specifications
Serial
Asynchronous
Select one of the following with DIP SW1-3:
❏
❏
MARK –3 V to –15 V logic "1" /ON
SPACE +3 V to +15 V logic "0" /OFF
Select one of the following with DIP SW1-4:
❏
❏
Select one of the following with DIP SW1-7 and SW1-8:
❏
❏
❏
❏
38400 bps (T88III)
[bps: bits per second]
Select one of the following with DIP SW1-5:
❏ Yes
❏ No
Select one of the following with DIP SW1-6:
❏ Even
❏ Odd
1 or more bits
However, the stop bit for data transfer from the printer is fixed to 1 bit.
Printer side DSUB 25-pin (female) connector
TM-T88II/T88III Technical Reference Guide
DTR/DSR (DIP SW1-3 OFF)
XON/XOFF (DIP SW1-3 ON)
7 bit (DIP SW1-4 ON)
8 bit (DIP SW1-4 OFF)
19200 bps (DIP SW1-7 OFF, DIP SW1-8 OFF)
9600 bps (DIP SW1-7 ON, DIP SW1-8 OFF)default
4800 bps (DIP SW1-7 OFF, DIP SW1-8 ON)
2400 bps (T88ii) or
(DIP SW1-7 ON, DIP SW1-8 ON)
(DIP SW1-5 ON)
(DIP SW1-5 OFF)
(DIP SW1-6 ON)
(DIP SW1-6 OFF)
default
default
Interfaces and Connectors A-1