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Ml182/183
Super-Speed Serial Interface Signal Requirements:
Pin
Signal
Descri
Frame Ground
FG
Ground
Connected to the printer
frame.
2
Transmit Data
TD
From Ptr
Transmits serial data from
the printer in X-ON/X-OFF
protocol.
3
Receive Data
RD
To Ptr
Serial data received by the
pri nter.
4
Request to Send
RTS
From Ptr
In Printer Ready/Busy
protocol indicates printer
not ready to receive data.
6 Data Set Ready
DSR
To Ptr
Tells the printer the
computer is ready to send
data. The printer receives
data after confirming this
signal as high (+).
7 Signal Ground
SG
Ground
Ground
11
Supervisory
Send Data
SSD
From Ptr
Indicates the printer is
ready to receive data in
Printer Ready/Busy
protocol.
20
Data Terminal
Ready
DTR
From Ptr
Indicates the printer is not
ready to receive data in
Printer Ready/Busy
protocol.
In addition to the cable, this serial interface has a piggyback circuit
board that must be installed in the printer. On the board are 16
function switches (two sets of eight switches) that you may have to
reset depending on the model computer you connect to the
printer.
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