Connecting a receipt printer
Which receipt printers work with the POS app and how to connect them to the network.
For kitchen receipts and other documents, the POS app requires a receipt printer. It works with Epson TM-series receipt printers and with network printers from other manufacturers that support ESC/POS via port 9100, such as Sunmi, Star, Citizen, or Bixolon. Setup involves three steps: connecting the printer, adding it to the POS system, and specifying what it should print.
Connect via network cable
Connect the printer to your router or switch using a network cable. Insert the receipt roll, with the smooth thermal side facing outwards, and turn on the printer. Many printers will then print a self-test with their IP address. Save this; you'll need it if the cash register can't detect the printer automatically.
Recommendation
The cable is the most reliable connection for continuous operation. Assign the printer a static IP address in the router settings; this will ensure it remains accessible after a restart.
Other connection types
WLAN – Connect printers with a WLAN module to your network according to the manufacturer's instructions.
Bluetooth – you can connect mobile Epson printers directly to the POS device. This also applies to Star printers on Android.
Built-in Printer – On a Sunmi POS system with a printer, the POS app (Android) automatically sets up the built-in printer upon first opening. It is then called Built-in Printer and prints receipts and reports.
Important: The POS terminal and network printer must be on the same network. A guest Wi-Fi network is usually separate from the main network, so the POS terminal cannot reach the printer from there.