Appendix A Interface And Connectors; Rs-232 Serial Interface - Epson TM-L90 Developer's Manual
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- Technical reference manual (212 pages) ,
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Appendix A
Interface And Connectors
RS-232 Serial Interface
Interface board specifications (RS-232 standard)
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 using Dip switch 3 or the memory switches (switch
operation/command "GS ( E" operation).
J DTR/DSR
J XON/XOFF
MARK
-3 V to -15 V logic "1" /On
SPACE
+3 V to +15 V logic "0" /Off
Select one of the following using Dip switch 4 or the memory switches (switch
operation/command "GS ( E" operation).
J 7 bit
J 8 bit
Select one of the following using Dip switchs 7/8 or the memory switches (switch
operation/command "GS ( E" operation).
J 115200 bps
J 57600 bps (cannot be set using the Dip switches)
J 38400 bps
J 19200 bps
J 9600 bps
J 4800 bps (cannot be set using the Dip switches)
J 2400 bps (cannot be set using the Dip switches)
[bps: bits per second]
Select one of the following using Dip switch 5 or the memory switches (switch
operation/command "GS ( E" operation).
J None
J Yes
J No
Select one of the following using Dip switch 6 or the memory switches (switch
operation/command "GS ( E" operation).
J Even
J Odd
1 or more bits
However, the stop bit of the transfer data from the printer is fixed at 1 bit.
Printer
Dsub-25pin (female) connector
side
TM-L90 Developer's Guide
Interface And Connectors A-1
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