Devices

5Printer & receipt

Plug it in, then open Settings → Devices

Connect and power the printer before installing; leave Set up connected devices checked. Automatic setup currently covers Epson TM-T20/T20II/T20III, Citizen CT-S310II, Bixolon SRP-350plus, and verified Xprinter, Rongta and POS58/POS80 USB variants. USB versions differ; real shop hardware validation is still required. Connecting a supported printer later may ask for one administrator approval. Use Test for a receipt and drawer pulse; connect the drawer to the printer's drawer socket.

The CH340/CH341 driver is included. Assign the COM port to a scale, pole display or drawer, then set baud and protocol in that device's tab. For an unknown device, check power and cable, then Refresh. A missing serial driver shows the chip name and vendor link; send support the model and hardware IDs. For a LAN printer, select the shop network and click Find printers. The scan runs only when requested.

In Devices, choose a category and model for connection guidance. The catalogue includes ZKTeco, Xprinter and Rongta printers; Zebra, Honeywell, Datalogic and Syble readers; and ZKTeco, Star, APG and Posiflex drawers. A listing does not mean the model is connected or hardware-tested. Keyboard-mode readers work even without a catalogue entry: use Barcode input test with an Enter suffix, without making a sale or saving input. A printer-connected drawer has no separate USB identity; match its cable, voltage and pinout. Dedicated USB and serial drawer variants use different commands and are not all supported.

• Printer: choose the thermal printer; “Default” uses the Windows default printer.
• Paper width: 80 mm (most common) or 58 mm. Leave printable width at 0 for automatic.
• Font size: 100% normal; try 110–125% if it prints small.
• Logo width in mm at the top of the receipt (0 = none).
• Print on every sale: enable after the test print works.
• Shop name, address/phone line and the thank-you footer are in the General tab.