Plot Mode Graphics Operational Description. Genicom P600, 5000 Series, GEK 00031B, GEK 00031B

PLOT MODE GRAPHICS OPERATIONAL DESCRIPTION

Plot Density

Plot density refers to the number of dots per inch (dpi) printed in a single dot row. Two types of plot density are available in this emulation:

▪ Normal density plot mode

▪ Double density plot mode

Normal Density Plot Mode

▪ Selected using the odd dot plot control code ENQ (05 hex) or the

“SFCC e” control sequence.

▪ The odd-numbered dot columns (120 DPI grid) are addressed to produce a horizontal density of 60 DPI.

Double Density Plot Mode

▪ Selected using the even dot plot control code EOT (04 hex), or the

“<SFCC> d” control sequence. The even dot mode must be used in conjunction with the odd dot plot control code ENQ (05 hex) or

“<SFCC> e” sequence.

▪ The even dots are sent first, followed by the odd dots, allowing a maximum of 1632 dots in a single dot row at 120 dpi (13.6 inch line).

▪ The vertical density remains the same as in normal density plotting.

Plot Mode Format

▪ Each data byte specifies six possible dot columns.

▪ Using odd dot plot, bits 1 to 6 of the data byte address the oddnumbered dot columns; using even dot plot, bits 1 to 6 of the data byte address the even-numbered dot columns.

▪ Bit 6 and/or bit 7 of the data byte must be a 1 (true) bit in the

Plot mode.

▪ Bit 8 of the data byte is ignored in Plot Mode; it can be either 1 or

0.

▪ The binary equivalent of the plot data bytes must be known in order to accurately address specific dot positions.

Chapter 4. Printronix P Series Emulation

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GEK-00029B