Printer Job Language - Technical Reference Manual

OPMSG Command The OPMSG command prompts the printer to display the
specified message and go offline. Use this command to
display a message and halt printing until the operator
presses the On Line, Continue, or Reset key.
Syntax: @PJL OPMSG DISPLAY = " message " [<CR>]<LF>
Parameters:
DISPLAY = "message" — The variable message can be
any combination of printable characters (except
quotation marks, character 34) and spaces or horizontal
tab characters, with a limit of 1 line of 16 characters (see
“Comments” below). The message variable is a string and
must be enclosed in quotation marks as shown in the
command syntax.
Comments: On some HP printers, the first two display characters blink.
To avoid blinking, begin the message with two blank spaces.
Some HP LaserJet printers may have a different limit for
the number of display lines and number of display
characters. To request the display limitations, use the INFO
CONFIG command. The printer returns DISPLAY
LINES=value and DISPLAY CHARACTER SIZE=value as
part of the response message. For example, the HP LaserJet
4 and 4M printers return DISPLAY LINES=1, DISPLAY
CHARACTER SIZE=16, indicating that the displayed
message is limited to 1 line of 16 characters.
Note For HP LaserJet 4PJ, 4V, 4MV, 5Si, 5SiMx, 5Si Mopier
printers, if the LANG variable is set to Japanese, the
message is displayed in the JIS X0201-76 character set.
Parameter Functional Range Default
DISPLAY = "message" Roman-8 characters 33
and 35 – 255, <SP>,<HT>
N/A
8-4 Device Attendance Commands