Barcode Widget

Last updated

Draws a barcode or QR code of a value, generated in the browser — a work-order number for a scanner, a serial on a label station screen.

Settings

Setting	Description	Default
Format	Code 128, QR Code, EAN-13, Code 39, Data Matrix, PDF417	Code 128
Show Text Below	Human-readable text under the code	on

Binding

Bind value to a tag, a static value or an expression. With no value the widget shows "Bind a value to generate barcode".

Behavior

• If the value is not valid for the format — letters in an EAN-13, or an EAN-13 with the wrong number of digits — the widget stays blank with no error. Check the value or switch to Code 128 or QR Code, which accept any text.
• Codes are drawn at a fixed scale and shrunk to fit; make the widget large enough for a scanner to read from the screen.

Example

Build a traceable QR payload with an expression binding value, using tag bindings value1 (work order) and value2 (lot):

'WO=' + value1 + ';LOT=' + value2

See also

• Binding Widgets to Data
• Vision: barcodes and QR codes