Modern retail requires high mobility and uninterrupted operation of equipment. Cash registers of the brand Mercury, produced by the company ATOL Online, are among the most popular solutions for small businesses. Situations often arise where a wired connection is impossible or inconvenient, and the entrepreneur needs to use a wireless network. This is where the question arises of how to connect the Mercury cash register to Wi-Fi via a phone to ensure reliable transmission of fiscal data to the fiscal data operator.
The setup process may seem complicated for a beginner, but it actually only takes a few minutes. You won't need specialized equipment or an engineer if you follow the steps. The key is to understand that the phone acts as an access point or control device, transmitting network parameters to the fiscal recorder.
In this article, we'll walk you through the entire setup process, address common mistakes, and offer professional advice on optimizing your connection. You'll learn how to correctly enter settings and check signal quality to avoid trading downtime. The key point is to precisely match the network security settings and the parameters specified in the checkout.
Equipment preparation and compatibility testing
Before you begin any manipulations with the software, you must ensure that the equipment is physically ready. Make sure that your cash register model, whether it be Mercury 115F, 180F or 185F, equipped with a Wi-Fi module. Not all basic configurations have a built-in adapter; sometimes an optional module is required. Check the device's package contents or refer to the markings on the label on the bottom of the case.
Battery health is also critical. The setup process and subsequent data transfer require a stable power supply. If the battery charge is less than 50%, it's best to charge the device, as power consumption may increase in setup mode. A low battery can cause a sudden shutdown while the configuration is being written, resulting in operational problems. fiscal storage device.
You'll also need a smartphone running Android or iOS. A dedicated app must be installed on the device. For Android devices, this could be "ATOL: Cashier" or the universal "Mobile Cashier" app. For iOS devices, you can use the corresponding apps from the App Store. Make sure Bluetooth is enabled on your phone, as initial pairing often occurs via this protocol, even if the goal is to set up Wi-Fi.
β οΈ Important: Before setting up, make sure that the SIM card (if using a hybrid model) is not installed or is disabled in the menu so that the cash register does not try to prioritize mobile Internet over Wi-Fi.
Installation and initial configuration of the mobile application
The first step is installing the control software. Download the official app from your hardware developer. For cash registers ATOL And Mercury The most commonly used app is "ATOL: Kassa" or the specialized utility "Mercury Tool." After installation, launch the program and grant it all requested permissions to use Bluetooth and geolocation.
Turn on the cash register by pressing the power button. A splash screen with the logo and current time should appear on the screen. If the cash register has been used previously, it may immediately go into standby mode. You will need to enter the administrator or technician menu. The standard default password is often specified in the instructions; it is usually a combination of numbers, such as 30 or 0000.
In the mobile app interface, tap the "Search for devices" button. The app will scan the air and find your cash register via Bluetooth. Select the desired device from the list. If the connection is successful, the cash register's current status and firmware version will be displayed on the phone screen. This channel will be used to transmit commands for configuring the Wi-Fi module.
Step-by-step instructions for connecting to a Wi-Fi network
Once your phone and the cash register are successfully paired via Bluetooth, you can begin setting up the wireless connection. In the app menu, find "Settings" or "Configuration," then select "Network Connections" or "Wi-Fi." The interface may vary slightly depending on the firmware version and device model.
Activate the search for available networks. The cash register will scan the surrounding area and display a list of available access points. Select your network from the list. If the network is hidden, you will need to manually enter the SSID (network name). Be careful when entering it: case is important, especially if the network name uses capital letters.
The next step will require a Wi-Fi password. Enter the security key for your wireless network. After entering the information, click "Save" or "Connect." The cash register will attempt to connect to the router. The Wi-Fi indicator on the device (usually an antenna icon) should light or flash, indicating successful data exchange.
βοΈ Setting up a Wi-Fi connection
It's important to understand that cash registers often only support the 2.4 GHz frequency range. If your router only broadcasts the 5 GHz network, the cash register simply won't see it. Make sure the standard is enabled on your router. 802.11 b/g/n.
Configuring TCP/IP and proxy settings
In most cases, it is enough for the cash register to receive the settings automatically via the protocol DHCPHowever, on corporate networks or when using specific routers, manual IP address assignment may be required. If automatic connection fails, go to the advanced network settings in the cash register menu.
Here you will need to enter a static IP address, subnet mask, and gateway address. This information should be provided by your system administrator or internet service provider. DNS settings are also often configured in this section. Incorrect values ββin these settings will result in a physical connection to the router, but no data transfer to the data operator (OFD).
Ports deserve special attention. The standard port for transmitting fiscal data may differ from the standard web ports. Make sure your router settings don't block outgoing connections to non-standard ports used by the fiscal data protocol.
Why do I need a static IP for my cash register?
A static IP address is required if you use the cash register on a local network with a computer (front office), and the inventory management software needs to be able to see the cash register over the network. For simple data transfer to the fiscal data operator (FDO) over the internet, a dynamic IP (DHCP) is sufficient.
Table of typical errors and ways to solve them
Even if you carefully follow the instructions, problems may still occur. Below is a table of the most common issues users encounter when setting up Wi-Fi at checkouts. Mercury, and methods for their elimination.
| Error | Probable cause | Solution method |
|---|---|---|
| Network not found | The router operates at 5 GHz. | Enable 2.4 GHz mode on your router |
| Authorization error | Incorrect Wi-Fi password | Recheck password, case sensitive |
| No connection to the OFD | Invalid date/time | Synchronize time in the cash register settings |
| Weak signal | Distance from the router | Move the cash register closer or use a repeater |
One of the most insidious problems is time desynchronization. The data transfer protocol requires that the time at the cash register, the OFD server, and the router be highly accurate. If the time is out of sync, security certificates fail to validate, and the connection is lost. Always check the date and time in "Settings" -> "Date and Time."
β οΈ Please note: Router interfaces and cash register firmware versions may be updated. If the menu items described differ, please refer to the latest documentation on the manufacturer's official website or in your personal account with the fiscal data operator.
Connection diagnostics and check test
Once the Wi-Fi indicator lights up steadily, you need to check the connection. Don't rush to print a real receipt for the customer. First, complete a test task. In the cash register menu or via the mobile app, find the "Payment Status Report" or "File Data Operator Connection Test" option.
Run the report generation. If the cash register successfully connects to the fiscal data operator's server and receives confirmation, you'll see a success message. This ensures that the IP, DNS, and gateway settings are correct and that firewalls aren't blocking the connection. If the test fails, return to checking the password and bandwidth.
Only after a successful test can you issue your first receipt. Pay attention to the printout: the receipt should have a QR code and fiscalization indicator printed on it. At the bottom of the receipt, the transmission status is often printed: "Fiscal indicator: 1" and the status "Data transmitted to OFD." If the status is "Data not transmitted," the problem persists, and the receipt will be placed in the unsent documents queue.
Frequently Asked Questions (FAQ)
Is it possible to share Wi-Fi with the cash register from a phone (modem mode)?
Technically, this is possible, but highly not recommended for continuous use. Your phone would need to be nearby at all times; its battery would drain quickly, and incoming calls could interrupt your internet connection. Use this method only as a last resort.
The cash register sees the network, but it says "Connection error." What's wrong?
The issue is most likely related to the encryption type. Older models of cash registers may not support the WPA3 protocol. Try switching your router to mixed WPA2/WPA3 encryption mode or temporarily leaving it set to WPA2 (AES).
What should I do if my cash register no longer detects Wi-Fi after an update?
Your network settings may be out of order. Try resetting your network settings to factory defaults (not a full reset!) and re-entering your password. Also, check to see if the broadcast channel on your router has changed (preferably, keep channels 1-11 locked).
Is internet access required for the cash register to operate in offline mode?
Internet access is not required to print a receipt; the fiscal storage device will record the data locally. However, internet access (Wi-Fi or SIM card) is required to transmit this data to the fiscal data operator (OFD). Failure to transmit the data within 30 days (as required by law) may result in the cash register being blocked.