Epson FX Series Product Support

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EPSON PRINTERS
Table 6-33 Jumper Settings
Jumper Function
Factory-Set
J1
ON: Pull up "TTY-TDX" to + 12V via 470 ohm
resistor (see note 1)
OFF
J2
ON: Connect "TTY-RDX" Return to Signal Ground
(see note 1)
OFF
J3
ON: Connect "TTY-TDX" Return to Signal Ground
(see note 1)
OFF
J4 ON: Pull up "TTY-RDX" to + 12V via 470 ohm
resistor (see note 1)
OFF
J5
ON: Pull up "DSR" and "DCD" to + 12V ON
J6 ON: Send XON/XOFF signal ON
J7 ON: Select 256k bit DRAM
OFF: Select 64k bit DRAM
OFF
JX
ON: XON/ XOFF control is used for handshaking in
Current Loop mode. (See note 3)
OFF
JF
ON: Flag control is used for handshaking in Current
Loop mode. (See note 3)
ON
JCL ON: Receive data in current loop mode (see note 4)
OFF
JRS ON: Receive data in RS-232C mode (see note 4)
ON
JNOR
ON: Flag polarity selection / Positive (see note 5,6)
ON
JREV ON: Flag polarityselection / Negative (see note 5.7)
OFF
6-27
GENERAL
Note:
1. If the host computer is not equipped with the power supply for the
Current Loop interface, these Jumpers must be connected to perform
communication via the Current Loop mode.
2. When either DSR or DCD keeps "SPACE" level, this interface can operate.
DIPSwitch 1-7 can make these signals invalid.
3. Either JX or JF jumper must be connected.
4. Either JRS or JCL jumper must be connected.
5. Either JNOR or JREV jumper must be connected.
6. Positive;
Data Entry Enabled
Data Entry Disabled
7. Negative;
Data Entry Enabled
Data Entry Disabled
Reverse Channel ON (+ BV to + HM)
Reverse Channel OFF (-3V to -IIM)
Reverse Channel OFF (-3V to -27V)
Reverse Channel ON (+ 3\/ to + IIM)

Epson FX Series Specifications

General

Brand	Epson
Model	FX Series
Category	Printer
Language	English