Centronics Parameters

ACK Polarity

Values: Standard (default) or Inverted.

This parameter must be set to match the ACK signal polarity of your host computer.

The printer sends a low-true signal called ACK (acknowledge) to the host to indicate that it has received a data byte from the host and is ready to accept more data.

Busy Polarity

Values: Standard (default) or Inverted.

This parameter must be set to match the Busy signal polarity of your host computer.

When the printer is busy and is not ready to receive more data, it sends a Busy signal to the host computer.

Slct (Select) Polarity

Values: Standard (default) or Inverted.

This parameter must be set to match the Select signal polarity of your host computer.

The high-true signal Select is sent by the printer to the host computer. The Select signal indicates the printer is online and no error conditions exist and that the printer is ready to receive data.

Fault Polarity

Values: Standard (default) or Inverted.

This parameter must be set to match the Fault signal polarity of your host computer.

When the printer detects a paper error or a fatal machine check, it sends a Fault signal to the host, which in turn stops sending any more data.

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Printronix L5035 user manual Centronics Parameters ACK Polarity, Busy Polarity, Slct Select Polarity, Fault Polarity