C.ITOH 8510A User Manual page 26

SIGNAL
SELECT
PAPER EMPTY (PE)
FAULT
FUNCTION
• This is an output signal from the printer, indicating whether
the printer is in a SELECT or DESELECT state.
• The signal is HIGH under SELECT and LOW under DESELECT.
• SELECT state occurs under any of the following conditions:
1. The SEL switch is depressed under a DESELECT state. (How-
ever, if the SEL switch is depressed during a PE state, the
printer will temporarily assume the SELECT state and print
one line of data before returning to the DESELECT state.
This override function enables the printing of the last few
lines of a report, even under a PE state.
2. The DCl code is received under a DESELECT state.
3. The power switch
is
turned-on while the selector switch is
closed.
• DESELECT state will occur under any of the following con-
ditions:
1. The SEL switch is depressed under a SELECT state.
2. A DC3 code is received.
3. The printer is in the PE state.
4. The power switch is turned-on while the selector switch is
open.
5. The printer is in a FAULT state.
• This is an output signal from the printer indicating that the paper
end is near (approx. 25 mm from the paper's edge). PE status is
also created when no paper is present.
• This signal is activated by a micro switch located below the platen.
• This signal is HIGH when activated.
• This is an output signal from the printer indicating printer F AUL T
state.
• The signal is LOW during a FAULT state.
• FAULT state occurs under any of the following conditions:
1.
Under a PE state. (However, if the SEL switch is depressed
during. a FAULT state, the FAULT signal will temporarily
become HIGH, enabling the printing of one line before return-
ing to LOW.)
2. Under a DESELECT state.
3. An error or malfunction has occurred in the printer. (e.g.,
no timing pulses are generated)
4. Cover Open is detected.
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