W&T 62008 User manual

W&T
Manual
RS422 > Centronics Interface
Model 62008, 62009
Release 1.40
W&T

12
W&T RS422 > Centronics Interface, 4+4 KByte, Model 62008
© 11/2005 by Wiesemann & Theis GmbH
Subject to errors and changes:
Since we can make mistakes, none of our statements should be
used without checking. Please let us know of any mistakes or
misunderstandings you are aware of, so that we can recognize
and eliminate them quickly.
Perform work on and with W&T products only as described here
and only if you have read and understood the manual fully. Un-
authorized use can result in hazards. We are not liable for the
consequences of unauthorized use. When in doubt, check with
us or consult you dealer!

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W&T RS422 > Centronics Interface, 4+4 KByte, Model 62008
Subject to error and alteration
Interface 20mA > Centronics, 4+4KByte, Model 62008
Function
Interface 62008 allows you to connect parallel printers or
plotters to any data source to a serial RS422 port. Installation
requires that the data format of the interfaces be adapted to
the format of the data source. The serial parameters can be set
either using DIL switches inside the port (see table) or using
automatic format detection in „Learn-Mode“.
Learn-Mode: To initialize Learn Mode, the black button on the
side of the interface converter must be actuated when the port
turns on. After releasing the button the current setting of the
port is output on the connected printer. Following this, approx.
1 page of any desired text should be sent to the interface for
the purpose of format detection. The serial parameters which
are detected are automatically stored in a non-volatile EEPROM.
The next time the port is activated (button does not need to be
pressed), the port carries out its normal function using the
newly detected parameters. Learn Mode can be repeated as
often as desired.
In normal operation, pressing the red button once clears the
built-in buffer (Clear). Pressing twice prints out the buffer
contents again (Copy).
Handshake: The interface performs hardware handshake and
XON/XOFF handshake. The built-in overrun buffer ensures that
no data are lost when the computer sends up to 4 KBytes after
Handshake Stop.
Code conversion: The interface can convert in either direction
between German ASCII and IBM code.

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W&T RS422 > Centronics Interface, 4+4 KByte, Model 62008
Manually setting the serial parameters
In addition to Learn Mode, the interface allows you to set the
serial parameters manually using DIL switches, which are
accessible after opening the interface housing. The meaning of
the DIL switches is described in the following tables:
Handshake
The Interface uses Hardware handshake and XON/XOFF hand-
shake. To suppress one of these methods, leave the corres-
ponding line unconnected. The built-in Overrun Buffer ensures
that no data are lose even when the computer sends up to 4kB
of data after the handshake stop.
Baudrate S1 S2 S3
300 Bd off off off
1200 Bd ON off off
2400 Bd off ON off
4800 Bd ON ON off
9600 Bd off off ON
19200 Bd ON off ON
38400 Bd off ON ON
76800 Bd ON ON ON
Data bit S4
7ON
8 off
Parity S5 S6
no ON off
odd off ON
even ON ON
Learnmode off off
Code conversion
S7 S8
no ON ON
GRASCII > IBM off ON
IBM > GRASCII ON off

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W&T RS422 > Centronics Interface, 4+4 KByte, Model 62008
Subject to error and alteration
Signal Pin#
Data Out A (-) 10
Data In A (-) 11
Signal GND 14
Hands. Out A (-) 15
Hands. Out B (+) 16
Data Out B (+) 22
Data In B (+) 23
Connector and pinouts
The RS422 connection on the interface is configured as a 25-
pin SUB-D female connector. The pinouts for this connector
must in general be adapted to the pinouts of the data source
when installing the device. This can be done using an adapter
cable or by modifying the interface plug assignments. The
interface pin assignments are shown in the following table.

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W&T RS422 > Centronics Interface, 4+4 KByte, Model 62008
Technical Specifications
Baud rate: 300..76800 baud
Data format: 7,8 data bits, No, Even, Odd Parity
Handshake: DTR-, XON-/XOFF-Handshake
Buffer: 8 KByte (4 KByte + 4 KByte overrun buffer)
Power supply: AC adaptor provided
Current draw: typ. 50 mA
Input: 25-pole SUB-D female connector
incl. 2m connection cable on the device
Output: 36-pin Centronics male, Interface
can be plugged directly into the printer
Housing: Plastic enclosure, 75x61x20 mm
Weight: 425 g incl. power supply
Packing list: Interface RS422 > Centronics
AC adaptor for office use

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W&T RS422 > Centronics Interface, 1+1 KByte, Model 62009
Subject to error and alteration
RS422 > Centronics Interface, 1+1KByte, Model 62009
The 62009 Interface permits parallel printers or plotters to be
connected to any data source having a serial RS422 port.
Function
When installing, the data format of the Interface must match
the format used by the data source. The RS422 parameters can
be set either by using DIL switches inside the Interface (see
table) or using automatic format detection in „Learn-Mode“.
Learn-Mode
To initialize Learn-Mode you must press the key on the
interface converter as the Interface is being turned on. After
releasing the key the current setting of the Interface is output
on the connected printer. Next a page of any desired text
should be sent to the Interface for purposes of format
detection. The detected RS422 parameters are output on the
printer and automatically stored in a non-volatile EEPROM. The
next the the Interface is turned on (without holding the red key
down), the Interface carries out its normal function using the
newly detected parameters. Learn-Mode can be repeated as
often as desired. In normaly operation pressing the key once
clears the built-in buffer (Clear). Pressing it twice prints out the
buffer contents again (Copy).
Manual setting of the RS422 parameters
In addition to Learn-Mode, the Interface allows you to set the
RS422 parameters manually using DIL switches accessible by
opening the Interface housing.

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W&T RS422 > Centronics Interface, 1+1 KByte, Model 62009
The number of stop bits may be any. Only the format 7 data
bits, no parity, 1 stop bit is not supported by Learn Mode of the
interface.
Handshake
The Interface uses Hardware handshake and XON/XOFF hand-
shake. To suppress one of these methods, leave the corres-
ponding line unconnected. The built-in Overrun Buffer ensures
that no data are lose even when the computer sends up to 1kB
of data after the handshake stop.
The meaning of the DIL switches can be taken from the table
below:
baudrate S1 S2 S3 data bit S4
300 off off off 7 ON
1200 ON off off 8 off
2400 off ON off
4800 ON ON off parity S5 S6 S7 S8
9600 off off ON no ON off ON ON
19200 ON off ON odd off ON ON ON
38400 off ON On even ON ON ON ON
76800 ON ON ON learn mode off off ON ON

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W&T RS422 > Centronics Interface, 1+1 KByte, Model 62009
Subject to error and alteration
Connectors and pinouts
The RS422 connection on the interface is configured as a 25-
pin SUB-D female connector. The pinouts for this connector
must in general be adapted to the pinouts of the data source
when installing the device.
This can be done using an adapter cable or by modifying the
interface plug assignments. The interface pin assignments are
shown in the following table.
Signal Pin#
Data Out A (-) 10
Data In A (-) 11
Signal GND 14
Hands. Out A (-) 15
Hands. Out B (+) 16
Data Out B (+) 22
Data In B (+) 23

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W&T RS422 > Centronics Interface, 1+1 KByte, Model 62009
Technical Data
Baud rate: 300..76800 baud
Data format: 7,8 data bits, No, Even, Odd Parity
Handshake: DTR-, XON-/XOFF-Handshake
Buffer: 2 KByte (1 KByte + 1 KByte overrun buffer)
Power supply: AC adaptor provided
Current draw: typ. 50 mA
Input: 25-pole SUB-D female connector
incl. 2m connection cable on the device
Output: 36-pin Centronics male, Interface
can be plugged directly into the printer
Housing: Plastic enclosure, 75x61x20 mm
Weight: 425 g incl. power supply
Packing list: Interface RS422 > Centronics
AC adaptor for office use