Operating instructions

Status Message
The PJL USTATUS command makes the printer send automatically status
message to the printer, when the printer's status is changed, a syntax
error occurs, or unsupported option or outranged value is entered. The
status message is formed with status code and display string. The status
code shows the printer's status or an error with a number of five figures.
The Status Code contains a list of the status codes. The display string
shows the printer's status with ASCII characters. The following is a
message example sent to the computer, when a paper jam occurs in your
printer.
Example: @PJL USTATUS DEVICE<CR><LF>
CODE=40022<CR><LF>
DISPLAY="ERROR:PAPER JAM"<CR><LF>
ONLINE=FALSE<FF>
40022 is a status code showing Paper Jam. The display string is
“ERROR:PAPER JAM”. ON LINE=FALSE shows the printer is in off line
mode.