Switch Settings:
Switch SW1
1 2 3 4 5 6 7 8
Character Sets:
English (US) Off Off Off
Italian On Off Off
English (UK) On On Off
German Off Off On
Swedish On Off On
French Off On On
Spanish On On On
Page length:
72 line On
66 line Off
Eighth Data Bit:
Ignore On
Recognize Off
Character Pitch:
Pica Off Off
Elite On Off
Ultracondensed Off On
Elite Proportional On On
Auto linefeed after CR:
Enable On
Disable Off
1 2 3 4 5 6 7 8
Switch SW2
1 2 3 4
Baud Rate:
300 Off Off
1200 On Off
2400 Off On
9600 On On
Data Protocol:
XON/XOF On
DTR Off
Off - Open
On - Closed
Pinouts:
(Order numbers A9M0303P and A9M0305P)
DB-25
Connector Signal Name
1 ...... Frame Ground
2 ...... Transmit Data (Tx)
3 ...... Receive Data (Rx)
4 ...... Request to send (RTS)
7 ...... Signal Ground
14 ...... Fault
20 ...... Data Terminal Ready (DTR)
Pin Out Explanation
Pin 1 (FG) is used to provide a common ground reference for the electronics in
both the ImageWriter and the device it is connected to. This pin is sometimes
not connected. If there is an intermittent problem which can be cured by
turning the IW off and on again, check the cable to see if pin 1 is connected.
Pin 2 (TD) conveys serial data sent from the ImageWriter (EXAMPLE: If the IW's
DIP switches are set for XON/XOFF flow control protocol then this line would
send characters to the connected device to tell it when to start and stop
transmission. This is one of the pins that may need to be crossed over if the
peripheral device is a DTE. A modem eliminator cable can perform this
crossover.
Pin 3 (RD) receives serial data sent from the device the ImageWriter is
connected to. This is one of the pins that may need to be crossed over if the
other device is a DTE. A modem eliminator can perform this crossover.
Pin 5 (RTS) is asserted whenever the ImageWriter is powered on.
Pin 7 (SG) provides a common electrical ground level that the devices can
reference the RS232 signals to. This pin should always be connected.
Pin 14 (Fault) notifies the device connected to the ImageWriter that the
ImageWriter has been deselected (the SEL lamp goes out). This can be due to
normal events such as you pressing the SEL switch or paper running out or it
can be due to a problem such as the ImageWriter's microprocessor experiencing a
glitch.
Pin 20 (DTR) becomes active when the ImageWriter is ready to go on line. If the
IW's DIP switches are set for the DTR flow control protocol, this line will go
on and off to tell the connected device when to start and stop transmission.
This is one of the pins that may need to be crossed over if the device
connected is a DTE. The modem eliminator cable can perform this crossover.
Article Change History:
24 Jun 1994 - Added pinout descriptions to article, revised formatting.
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