Printronix L5035 Printer Configuration Data Polarity, Data Req Request Polarity, Ready Polarity

Chapter 3 Printer Configuration

Data Polarity

Values: Standard (default) or Inverted.

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

There are normally seven or eight data bits that define each ASCII character sent from the host computer to the printer. The bits are usually high-true.

Strobe Polarity

Values: Standard (default) or Inverted.

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

When the host computer sends a data strobe signal, it is indicating that it has placed data on the data bus and that the data is valid (i.e., enough time has elapsed for the data lines to stabilize). The data strobe signal forces the printer to read the data lines into its input buffer.

Data Req (Request) Polarity

Values: Standard (default) or Inverted.

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

Data Request is a high-true signal sent by the printer requesting data from the host.

Ready Polarity

Values: Standard (default) or Inverted.

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

When the printer is ready to receive data, it sends a Ready signal to the host.

86