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Chapter 8 P-Series Compatible Plot Mode (Odd/Even Dot Plotting)
Figure 33. P-Series Plot Data Byte Format
See Appendix C, “P-Series Plot Byte Definition,” for a complete definition of
the valid plot data bytes.
Plot Data Line Format
A plot data line may contain the following plot data bytes: When using 132
column paper, the maximum bytes are 132 for a horizontal dot density of 60
dpi or 198 bytes for a horizontal dot density of 90 dpi. If Auto Line Feed is
disabled, any bytes over the maximum are lost. If the maximum is exceeded
and Auto Line Feed is enabled, a Line Feed (LF) is forced and the remaining
plot data is printed as text on the next line.
Normal Density Plot
For normal density plot, the plot line contains: Control Code hex 05, plot data
bytes, and a Line Terminator (hex 0A or hex 0C). The control sequence for
sending the P-Series Normal Density Plot is:
1. Send the plot command code ENQ (hex 05).
2. Send the plot data bytes.
111 1110
BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8
ODD DOT PLOT DATA BYTE
LSB MSB
1357911
NOT
USED
NOT
USED
00 01111
2 4 6 8 10 12
EVEN DOT PLOT DATA BYTE
BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8
LSB MSB
DOT COLUMN #1 OF
NEXT CHARACTER
COLUMN
~~~~~~~~~~~~~~
DOT COLUMN
#12 OF PREVIOUS
CHARACTER
COLUMN
NOTE: IN ACTUAL
PRINTING, THESE
TWO ROWS MERGE
TO PRINT ON THE
SAME ROW.
NOTE: BIT 6
AND/OR BIT 7
MUST BE
1"
FOR PLOT MODE
~~~~~~~~~~~~~~
NOTE: BIT 6 AND/OR
BIT 7 MUST BE “1”
FOR PLOT MODE
