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INTERFACE INFORMATION
D-2
Compatible Mode
Pin Return
Signal
No. Pin No.
name
1
19
Data Strobe
(DSTB)
2–9
20--27 Data 1 to 8
10
28
Acknowledge
(ACK)
11
29
Busy
12
30
Paper Empty
(PE)
Direc-
Description
tion
Input
This signal is a strobe pulse
for reading data (Data 1 to 8).
The printer reads data when this
signal is low. The pulse width
must be 1 µs or more at the
receiving terminal.
Input
Data 8 (pin 9) is the most
significant bit; however, this pin
is not used in 7-bit ASCII
communications.
Logical 1 signals must go high at
least 1 µs before the falling edge
of the Data Strobe signal and
must stay high for at least 1 µs
after the rising edge.
Output This pulse signal indicates
that the printer has received data
and is ready to accept the next set
of data.
This signal is also sent when the
printer is switched from offline to
online.
Output Data cannot be received when
this signal is high. This signal is
high during data entry, when the
printer is offline, when the buffer
is full, or when an error occurs.
Output This signal is high when the
printer is out of paper.
User's Manual
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