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Problemas de ZPL y cómo solucionarlos

Common ZPL problems, each with a minimal label that shows it, the cause, the exact change that fixes it and the corrected render. All renders come from the OpenZPL engine.

11 pages

Text and characters

ZPL imprime caracteres acentuados incorrectamente Los caracteres acentuados se imprimen incorrectamente en ZPL cuando los bytes que envía y el conjunto de caracteres que la impresora espera no coinciden. Guarde el ZPL como …
A ^ or ~ in the data cuts the ZPL field short A `^` or `~` inside `^FD` data starts a new command, so the text stops there and the rest of the field is lost. Add `^FH` before `^FD` …
ZPL text is not centered ZPL centers text only inside a field block: `^FB` with justification `C` centers each line within the block width, starting at the `^FO` position. To center on the …
ZPL text prints too small or the wrong size ZPL text size comes from the height and width in dots in `^A`, or from `^CF` when `^A` leaves them out. A field with no size falls back …
ZPL text overlaps or runs off the label ZPL text overlaps when the gap between two `^FO` y positions is smaller than the font height, and runs off the label when a line is wider than …
ZPL text prints rotated or sideways ZPL rotates a text field by the orientation letter in `^A`: N normal, R 90°, I 180° and B 270°. A field whose `^A` leaves the letter out …

Layout and size

La etiqueta ZPL está cortada Una etiqueta ZPL se corta cuando sus coordenadas fueron diseñadas para una etiqueta más grande o una densidad más alta que la de la impresora. Una etiqueta de …
ZPL imprime una etiqueta en blanco Una etiqueta ZPL imprime en blanco cuando cada campo cae fuera de la etiqueta, cuando el formato nunca se cierra con `^XZ`, o cuando ningún campo tiene datos. …
A missing ^FS makes a ZPL field disappear Every ZPL field ends with `^FS`; without it the field stays open and the next field's commands are applied to it. In the OpenZPL engine the unclosed field …

Barcodes and images

ZPL barcode doesn't scan A ZPL barcode that doesn't scan usually has no quiet zone, bars too thin for the printer, or data the symbology rejects. Leave 10 narrow bars of blank …
A ZPL image prints distorted, slanted or cut A `^GF` image prints slanted or garbled when its bytes per row don't match the image width, and cut short when the data is shorter than the declared …