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3.13.4 Dual Port Option
The Dual Port option allows for simultaneous connection to two hosts with each one alternately enabled using
either the DTR or XON/XOF protocols. A port is enabled for 0.25 seconds or, if data is received, until no
document is present and the buffer is empty. If configuration 05 is selected under 94 FUNCT, the display will
show which port received data.
3.13.5 Parallel Interface Option
A PC type parallel interface is optionally available. This interface accepts all commands defined in 3.11 or
3.12 but does not accept status, key buffer, line count or document length requests since data cannot be
transmitted back to the host through this unidirectional interface. All signals are available on a 36 pin female
connector. A shielded cable with only the PC end of the shield connected to a metal connector cover is
recommended to increase immunity to static discharges and other electrical noise. Pin assignments are as
follows:
Pin
Signal
Pin
Signal
1
Strobe(-)
13
Select
2 to 9
Data Bits 0 to 7
32
Error(-)
10
Acknowledge(-)
35
+5 Volts
11
Busy
18 to 25 Logic ground
12
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