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Parallel Interface
C-5
Paper Empty [PError] (Pin 12)
This signal goes high when the printer runs out of paper.
On-Line [Select] (Pin 13)
This signal is high when the printer is on-line and low when the printer is off-line. It goes low when the
upper unit is raised, or when the
ON LINE
key is pressed to set the printer off-line.
Note______________________________________________________________________
The Paper Empty and On-Line signals are not used unless enabled by the FRPO command (O2
parameter).
Auto-Feed [nAutoFd] (Pin 14)
This signal is used in the Epson version of the Centronics interface to receive a carriage return. In
high-speed mode, it is used as an interrupt.
+5 V DC (Pin 18)
This line is connected to the printer’s +5 V DC line (+5 V ±0.5 V, 250 mA [Serial and Parallel total]
maximum, fused).
Prime [nInit] (Pin 31)
This signal is used in the standard Centronics interface to enable the computer to reset the printer. It is
ignored by the printer.
Error* [nFault] (Pin 32)
When the high-speed parallel line control is on (FRPO O2=2), this line returns error status.