Setting the Interface Functions: Centronics-Compatible Parallel Interface
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cutting or plotting operation. When the specified operation is completed, the plot-
ter awaits the input of subsequent DATA signals.
CAUTION: The interface cable should be no longer than two meters.
Specifications • While the parallel interface is used, data cannot be output from the plotter (that
is, READ commands cannot be used with the exception of the “BS” command).
• Asynchronous transmission by handshaking is based on STROBE and BUSY
signals by way of the synchronization method.
Electrical Char-
acteristics
Electrical characterisics are based on TTL-level compatibility with the logic
states outlined below.
Input/Output Cir-
cuitry
Positive logic “1” + 2.2V or more
“0” + 0.8V or less DATA, BUSY
Negative logic “1” + 0.8V or more
“0” + 2.2V or less
ERROR
ACK, STROBE
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