Use "https://yourhost.com/print.php?row=" and add Arguments (SKU, EAN, FNSKU, Cut_ID, Number of Copies, 0 or 1 for FBA or WMS-Label)
with comma but without spaces.
For example: https://yourhost.com/print.php?row=ES-VW-ARTE-SW-20-C,4260670783917,X001BUZBRX,CAR-ES-296,3,1