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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.
