AMT Datasouth Documax 5380 User Manual
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2.
Pin description:
3.
Signal description:
Typical pin out ~
Input signal: RXD and DSR
Output signal: TXD and DTR
RXD: The printer receives data
DTR: High level denotes that the printer is ready to receive the data from the
HOST; contrarily, denotes the printer is BUSY and it is forbidden to receive
the data from the HOST.
TXD: The printer sends data
Data bit format ~
Data bit is fixed 8 bits, Stop bit is fixed 1 bit
Baud Rate ~
Serial communication baud rate can be set through menu setting:
1200 bps, 2400 bps, 4800bps, 9600bps, 19200 bps
Interface Protocol ~
The DTR from printer controls the data stream between printer and HOST. When
DTR is high level, the printer is READY, it can receive the data from HOST. DTR
is high level in the following conditions:
The printer is online.
The data buffer of the printer is larger than limited value.
The printer has no error.
Pin
Signal Name
Direction
1
FG Frame Ground
2
TXD Transmit Data
OUT
3
RXD Receive Data
IN
4
RTS Request to Send
OUT
5
CTS Clear to send
IN
6
DSR Data set ready
IN
7
GND Ground
8
DCD Data carrier Detect
IN
…
…
20
DTR Data terminal
ready
OUT
…
…
DTR
GND
TXD
DSR
DCD
CTS
GND
RXD
2
0
7
2
3
5
2
3
6
1
8
Printer 25 PIN connector
HOST 9 PIN connector
DTR
GND
TXD
RXD
DSR
DCD
CTS
GND
RXD
TXD