Print Orientation
The ^PO (Print Orientation) instruction inverts the label format 180
degrees. In essence, the label is printed upside down.
The format for the ^PO instruction is:
^POa
where
^PO = Set Print Orientation
a = Invert 180 Degrees
N = Normal {I.V.P. = N}
I = Invert
Once you issue a ^PO command, the setting is retained until you turn
off the printer or send the opposite ^PO instruction to the printer.
The ^POI instruction moves the Label Home position to the furthest
point away from the main frame. Therefore, a different ^LH (Label
Home) can be used to move the print back onto the label.
NOTE: If multiple ^PO instructions are issued in the same label
format, only the last instruction sent to the printer is used.
302 ZPL II COMMAND REFERENCE
^PO
Defining Field Orientation Parameters
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