FOR Loops ZBI Reference

What FOR Loops does

FOR Loops is part of the ZBI Programming reference. Use it when working with for loops on compatible Zebra printers. This independent reference focuses on the command shape, configuration inputs, defaults, and the surrounding commands that are commonly used with it.

Syntax

FOR Loops

Parameter quick reference

• FOR <I> = <A> TO <B> [STEP <C>]
• <I> = indicates a numeric variable is used. <I> increments each time through the FOR#LOOP.
• <A> = the value assigned to <I> the first time through the loop
• <B> = the last value through the loop
• <C> = (Optional) the amount <I> increments each time through the loop
• FOR I=1 TO 10 {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
• FOR I=10 TO 1 {10, 9, 8, 7, 6, 5, 4, 3, 2, 1}
• FOR I=1 TO 10 STEP 2 {1, 3, 5, 7, 9}
• FOR I=10 TO 1 STEP 2 {10, 8, 6, 4, 2}
• FOR I=10 TO 1 STEP 2 { } FOR LOOP skipped

Implementation guidance

• Confirm that the printer model and firmware support the command before deployment.
• Test the smallest valid command first, then add optional parameters one at a time.
• Keep units in printer dots unless the command explicitly defines another unit.
• Verify the result on the target media, because resolution, orientation, and stored settings can change the output.

Troubleshooting

If the printer ignores the instruction, check the command prefix, delimiter characters, firmware support, and whether the command belongs inside a ^XA and ^XZ format. For output commands, also confirm that the field is closed with ^FS where required.

Source note

This independently written page was checked against the Zebra programming guide revision supplied for this project (reference page 482). Zebra, ZPL, and related product names are trademarks of their respective owners.