Connect a printer over your network (LAN)

Set up a printer that sits on your venue's network, using its IP address.

A LAN printer is one that is plugged into your venue’s own network, either by cable or over Wi-Fi, and the tablet running your till sends receipts straight to it across that network. It is fast, and because nothing has to leave the building it carries on working even if your internet goes down, as long as the local network is still running.

What you need first

• The printer has to be on the same network as the tablet. Not the guest Wi-Fi, and not somebody’s phone hotspot, but genuinely the same network, because devices on separate networks cannot see each other at all.
• You need the printer’s IP address on that network, which is the number the tablet uses to find it.
• You need a tablet set as your printing device, which is explained in Print from the tablet you’re using.

Finding the IP address

Most thermal printers, including the Sunmi NT311, can print their own settings page with the IP address on it. On many models you do this by holding down the paper feed button while you switch the printer on. If that does not work on yours, the quick-start card that came with the printer will tell you the right combination.

It is also worth asking whoever looks after your network to give the printer a fixed address. If the router is left free to hand out a different address whenever it likes, your printing will simply stop working one day, and because nothing changed on your side there will be nothing obvious to explain why.

Add it in Dinerly

1. Go to Settings → your location → Printers and click Add Printer.
2. For Printer Name, use the station it serves, such as Kitchen, Bar or Pass.
3. For Connection, choose LAN (network).
4. For IP address, enter the address you found, for example 192.168.1.50.
5. For Port, the answer is almost always 9100. Only change it if the printer’s own documentation tells you to use something different.
6. If the printer also has an internet connection, add its Sunmi serial (SN) as well. Receipts then fall back to cloud printing on the occasions when the tablet is switched off, which costs you nothing and saves you a service.
7. Save, and then click Test print.

If the test doesn’t print

Work through these in order, because they are listed by how often they turn out to be the cause:

1. Check the tablet is on the same network as the printer. This is the explanation most of the time. Look at the Wi-Fi name on the tablet and compare it with the network the printer is connected to.
2. Check the tablet is set to print. A LAN printer receives its jobs from the tablet rather than from the cloud, so if This device prints receipts is switched off on every device, there is nothing to send the receipt and nothing will print.
3. Check the IP address is still correct. Print the printer’s settings page again and compare it with what you entered. If the address has changed, that is your answer, and it also means your network needs to be told to give that printer a fixed address.
4. Check the printer itself is awake, has paper in it and does not have its lid open. The lights on the front will usually tell you.

A network printer handles one receipt at a time. When several orders land together, Dinerly queues them and sends them one after another, so a short pause before the last of them appears is normal rather than a sign that something has gone wrong.

Last updated 20 September 2026