FS-6700
Replace the main controller board back into the printer. Secure the board by the
three screws.
Serial port pin assignment
The pins of the parallel interface connector carry the signals listed below. The RS-
422A specific signals are noted in the Definition.
Table A. 5 Serial port assignment
No.
Signal
Flow
Definition
1
FG
—
Frame ground
2
TxD
Printer to host
Transmit data: RS-232C
3
RxD/RDA
Host to Printer
Receive data/receive data (Reversed)
4
RTS
Printer to host
Transmit request
5
CTS
Host to printer
Transmit permitted
6
DSR
Host to printer
Data-set-ready
7
SG
—
Signal ground
9
SDA
Printer to host
Transmit data (Reversed): RS-422A
10
SDB
Printer to host
Transmit data: RS-422A
18
RDB
Host to printer
Receive data: RS-422A
20
DTR
Printer to host
Data-terminal-ready
Other Not con-
nected
Undefined
—
Table A. 6 Meaning of signals—1/2
Signal
Pin
Meaning
FG
1
This pin is connected directly to the printer frame.
TXD
2
RS-232C only: This output carries asynchronous data sent
by the printer to the computer. It is used mainly in hand-
shaking protocols.
RXD/RDA
3
This input carries serial asynchronous data sent by the
computer to the printer. In RS-422A, this carries the
inversed differential data (RDA).
RTS
4
This output is always held high (above 3 V).
CTS/DSR
5/6
Unused.
RS-232C
position
RS-422A
position
Содержание Ecosys FS-6700
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Страница 11: ...B 5 FS 6700 ...
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Страница 83: ...Disassembly Disassembly Option paper feeder 5 22 FS 6700 This page left blank intentionally ...
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