Unisys E-@CTION EFP9800 - Manual (Page 134)

EFP9800 ESC/POS Commands
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The command is ignored if:
•
Data is present in the print buffer.
•
A downloaded bit image is not defined.
•
The value of m is out of range.
Hexadecimal Decimal ASCII Value of m
1D 2F m 29 47 m GS / m (See table below)
Horizontal Direction
m Dot Density Adjacent Dot Specification Max. Dots
0 Double-Density Prohibited 400
1 Single-Density Permitted 200
Printer Status Commands
These commands enable the printer to communicate with the host computer
following the selected handshaking protocol, DTR/DSR, XON/XOFF, or bi-
directional parallel. They are stored in the printer’s data buffer as they are
received, and are handled by the firmware in the order in which they were
received.
When a fault occurs, the printer goes busy at the RS-232C interface and does not
respond to the Printer Status commands. If the fault causing the busy condition
can be cleared, such as by loading paper the printer will resume processing the
data in its receive buffer.
If a paper jam caused the busy condition and the application is not using Real
Time commands for status and recovery, clear the jam and press the reset
button to cycle the printer. See the following section, “ Real Time Commands”
for details about the Real Time commands.
The commands are listed numerically by hexadecimal code.