SATO CL4NX Programming Reference Manual page 675

(2) Process at the paper end
ESC A..ESC Z (1)
DATA
STROBE
ACK
BUSY
SELECT
PE
FAULT
Receive/Analysis/Edit (1)
Printer Status
*When the paper end error occurs, open the head, set label, close the head and feed.
Note: The paper end error will be released when the head is closed.
Paper end error
ESC A...ESC Z (2)
Online
Receive/Analysis/Edit (2)
*
Printing (1)
Head open
Printer
Offline
673
Head close
Press the LINE button
Online
Printing (1)