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Epson C82305*/C82306* (Type B, 0KB)

This serial interface card is an interface card that allows synchronous either RS-232D or 20 mA Current loop serial data communication between a host computer and an Epson printer. The main features of the card are:-

  • Handshaking protocol using X-ON/X-OFF or DTR flag control.
  • Selectable data word structure. This allows a user to choose parity (odd, even, none or ignore) and word bit settings (either 7 or 8 bits)
  • Selection of baud rate settings from 75 to 19200 bps. (Data transmission speed is limited to 1200bps when the transmission is set to 20mA Current loop.
Switch No.FunctionOnOff
SW1-1Interface cardEnableDisable
SW1-2Word length selection8 bits7 bits
SW1-3Parity check 1See table 2
SW1-4Parity check 2See table 2
SW1-5Bit rate selectionSee table 1
SW1-6Bit rate selectionSee table 1
SW2-1Bit rate selectionSee table 1
SW2-2Bit rate selectionSee table 1
SW2-3HandshakingDTRX-ON / X-OFF
SW2-4RS-232D/Current loopRS-232DCurrent loop


JumperFunction
J1ON: Pull up TTY-TXD to +12V via 470-ohm resistor.
J2ON: Connect TTY-TXD Return to signal ground.
J3ON: Pull up TTY-RXD to +5V via 200-ohm resistor.
J4ON: Connect TTY-RXD Return to signal ground.
 Flag polarity selection for handshaking
J5JNORON: MARK(not accept data)=Negative EIA level
MARK(not accept data)=Current ON
 JREVON: MARK(not accept data)=Positive EIA level
MARK(not accept data)=Current OFF
JGON: Connect protective ground to signal level

Table 1

Baud RateSW1-5SW1-6SW2-1SW2-2
75ONONOFFOFF
110OFFOFFOFFON
134.5OFFONOFFON
150ONOFFOFFON
200ONONOFFON
300OFFOFFONOFF
600OFFONONOFF
1,200ONOFFONOFF
1,800ONONONOFF
2,400OFFOFFONON
4,800OFFONONON
9,600ONOFFONON
19,200ONONONON

Table 2

Parity CheckSW1-3SW1-4
NoneOFFOFF
IgnoreOFFON
OddONOFF
EvenONON