Dascom T2250 User Guide IGP for Dot Matrix Printers - Manual (Page 41)

Chapter 2: Emulations
41
Plot Mode
When Plot Mode is selected, all input data is treated as plotting data. All graphics in Plot Mode
are designed and printed one dot-row at a time.
In Plot Mode the data stream dictates each dot to be printed. Data bytes are either bit images of
the dots to be printed, or they are commands to repeat the previous bit image one or more times.
Both the density of dots in the horizontal row, and the density of rows can be varied.
When switching from Character Printing to Plot Mode and vice versa, any data in the print buffer
is printed. After the data prints out in Character Mode, the print position moves to the left margin
of the current line. In Plot Mode it stays at the current dot row. If no paper motion command is
issued, printing continues at the current print position.
When the printer enters Plot Mode, it starts plotting at the left margin, at the top row of the
character dot matrix. When the printer exits Plot Mode, the position of the next print location
depends on the setting of the M o d P l o t Parameter.
Plot Mode Commands
In Plot Mode, all control codes and escape sequences may be used. All of the commands work
the same except the following:
Line Feeds advance by the dot-row instead of line distances.
Horizontal Tabs are not recognized.
Forward Index commands are not recognized.
Reverse Index commands are not recognized.
Entering Plot Mode
To enter Plot Mode, use the escape sequence:
ESC [ < 3 h
1B 5B 3C 33 68
You need to use this escape sequence only once. After entering Plot Mode, you simply send Plot
Data, instructions, and the usual control codes and escape sequences.
Exiting Plot Mode
To exit Plot Mode and enter Character Mode, use the escape sequence:
ESC [ < 3 l l = lower-case L
1B 5B 3C 33 6C
When the Modplot Parameter is set to ON, the printer automatically performs an Align to Line
Boundary function and moves the print position to the next line down instead of the next dot row
down. The default for this parameter is ON. The examples that follow show the actual results of
both Modplot ON and Modplot OFF in MT660 Emulation.