Printronix MVP Series user manual Double Density Plot

Double Density Plot

For double density plot, the plot line format contains: the even dot plot control code with plot data bytes, a line terminator to plot the data bytes, the odd dot plot control code and a line terminator. The control sequence for sending P–Series double density plot is as follows:

1.Send the even dot plot control code EOT (04 hex), followed by plot data bytes. (Refer to Table 5–1 on page 5–3.)

2.Send a line terminator. The line terminator allows the printer to plot the data bytes. The paper is not advanced in double density plot; the printer will wait for the second plot command and plot data bytes.

3.Send the odd dot plot control code ENQ (05 hex) and a second line of data, followed by a line terminator:

a.For a Line Feed use 0AH. A line feed plots the contents of the buffer and advances the paper a single dot row, based on the vertical density of the current mode. A CR (if CR = CR + LF is configured) may also be used with the same result.

b.For a Form Feed use 0CH. A form feed plots the data bytes and advances the paper to the top of the next form.

Regardless of which line terminator code is sent, the printer defaults to the previously selected print mode unless further plot control codes are provided with the data.

IMPORTANT

Failure to adhere to this format may cause unexpected results.

Graphics 5–19