Robust Xon; Rs-422 Polarity - Lexmark W820n User Manual
Lexmark w820n: user guide
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Also See for W820n:
- Setup manual (126 pages) ,
- Quick reference (2 pages) ,
- Specifications (2 pages)
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Robust XON
Purpose:
To determine whether the printer communicates availability to the computer.
Values:
Off*
Printer waits to receive data from the computer.
On
Printer sends a continuous stream of XONs to the host computer to indicate that the serial
port is ready to receive more data.
This menu item only applies to the serial port if Serial Protocol is set to XON/XOFF.
RS-232/RS-422
Purpose:
To specify the type of serial communication.
Values:
RS-232*
RS-422
Note: Selecting RS-422 automatically sets Serial Protocol to XON/XOFF.
RS-422 Polarity
Purpose:
To establish the behavior of the positive and negative signals when using RS-422 serial
communication.
Values:
Normal*
Uses default definition of one and zero.
Reverse
Reverses the definition of one and zero, thereby allowing a positive connection to a host
computer negative terminal without changing the physical cable.
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