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68
MO9740 Manual
Parallel (Centronics)
The parallel port is a standard 36-pin Centronics. Its pin
assignments are listed as following.
Pin Direction Definition Pin Direction Definition
1 In /STROBE 13 Out SELECT
2 In Data1 14,15
NC
3 In Data 2 16 - Ground
4 In Data3 17 - Ground
5 In Data4 18NC
6 In Data5 19~30 - Ground
7 In Data6 31
NC
8 In Data7 32 Out /Fault
9 In Data8 33~36 - NC
10 Out /ACK
11 Out BUSY
12 Out PE
Auto Polling
Both the serial port and parallel port of this printer can be activated
at the same time, i.e the printer can simultaneously communicate
with two PC via different port. However as no port contention is
made for this printer, if both PC transmit data at the same time to
this printer, the data may become damaged in the receiving buffer.
69
MO9740 Manual
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