Epson T88IIIP - TM B/W Thermal Line Printer, Technical Reference Manual

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