Epson TM-T20II Technical Reference Guide - Page 90
RS-232 Serial Interface, Interface board specifications RS-232-compliant
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RS-232 Serial Interface Interface board specifications (RS-232-compliant) Item Data transfer method Synchronization Handshake Signal level MARK SPACE Transmission speed Bit length Parity Stop bit Connector Specifications Serial Asynchronous Select one of the following with the memory switch: DTR/DSR XON/XOFF -3V to -15V logic "1"/OFF +3V to +15V logic "0"/ON Select one of the following with the memory switch: 2400/4800/9600/19200/38400/57600/115200 bps [bps: bits per second] Select one of the following with the memory switch: 7 bit 8 bit Select one of the following with the memory switch: None Even Odd 1 or more bits However, the stop bit for data transfer from the printer is fixed to 1 bit. DSUB 25-pin (female) connector 90
90
RS-232 Serial Interface
Interface board specifications (RS-232-compliant)
Item
Specifications
Data transfer method
Serial
Synchronization
Asynchronous
Handshake
Select one of the following with the memory switch:
DTR/DSR
XON/XOFF
Signal level
MARK
-3V to -15V logic “1
”
/OFF
SPACE
+3V to +15V logic “0
”
/ON
Transmission speed
Select one of the following with the memory switch:
2400/4800/9600/19200/38400/57600/115200 bps
[bps: bits per second]
Bit length
Select one of the following with the memory switch:
7 bit
8 bit
Parity
Select one of the following with the memory switch:
None
Even
Odd
Stop bit
1 or more bits
However, the stop bit for data transfer from the printer is fixed to 1 bit.
Connector
DSUB 25-pin (female) connector