Switching to online cash register equipment requires a stable internet connection to transmit fiscal data to the fiscal data operator (OFD). Business owners often choose Mercury They are renowned for their reliability, but setting up a wireless connection can be challenging for inexperienced users. Proper network configuration ensures uninterrupted operation of retail equipment and eliminates queues.
The setup process depends on the specific terminal model and software version. Modern devices Mercury-115F, 130F or 185F have a built-in Wi-Fi module that requires activation and router settings. It's important to understand that connection stability is critical to complying with legal requirements.
In this guide, we'll cover technical details that are often overlooked during initial setup. You'll learn how to avoid common mistakes and ensure your cash register is always online.
Checking compatibility and preparing equipment
Before you begin setup, you need to make sure your fiscal registrar model supports wireless communication. Not all models in the line support wireless communication. Mercury Equipped with a built-in Wi-Fi module by default. The presence of an antenna or a corresponding menu item usually indicates support for the technology.
To use this feature, you'll need a router with a configured broadcast channel. Please note that most cash registers only operate in the 2.4 GHz band. If your router is broadcasting in the 5 GHz band, the terminal simply won't see the access point, even if the password is entered correctly.
You'll also need to know the Wi-Fi network password. Make sure the network name (SSID) and password don't contain Cyrillic characters, as the firmware may misread Russian letters, resulting in an authorization error.
β οΈ Note: If you're using a corporate network with web-based authentication (captive portal), the checkout will be unable to connect. Use a guest network or mobile sharing without additional verification.
Prepare the cash register itself: it should be connected to a power source and turned on. It's best to perform the setup close to the router to avoid any issues with a weak signal during testing.
Setting up Wi-Fi on Mercury 115F and 130F cash registers
Models 115F And 130F are among the most popular mobile solutions. The interface of these devices is based on sequential menu logic. To begin, log in to administrator mode by entering the password (by default, this is often 30).
Go to the network settings section. Here you need to select the connection type. If you plan to use a wireless connection, make sure that the value is selected in the interface settings. Wi-Fi, not Ethernet or USB.
Next, it searches for available networks. The cash register will scan the air and display a list of SSIDs. Select the desired network from the list. If the network isn't listed, check if the SSID name is hidden in your router settings (SSID Hide). In this case, you'll have to enter the name manually.
After selecting a network, the device will ask for a password. Enter the password carefully, observing capitalization. After saving the settings, the cash register will attempt to establish a connection. A successful connection is usually indicated by the appearance of an antenna icon on the screen.
βοΈ Connection check
Network configuration for the Mercury 185F model
Model 185F It has more advanced functionality and is often used as a standalone cash register. Configuration can be done not only through the machine's menu but also through the utility. Test KKM on the computer if the device is connected via USB.
In the cash register menu, go to the "Settings" section and select "Network." It's important to set the IP parameters correctly. The default setting is to obtain the address automatically (DHCP). This is the simplest option for most home and office routers.
If your network requires a static IP address, you must manually enter the IP address, subnet mask, gateway, and DNS servers. Even a single digit error will prevent the cash register from connecting to the fiscal data operator (FDO) server.
To enter parameters via a PC, launch the utility, select the connection port, and go to the network settings tab. Enter the data and click "Save." After rebooting, the cash register will apply the new parameters.
β οΈ Important: When using a static IP, make sure the selected address is not already occupied by another device on the network, otherwise an address conflict will occur and both machines will lose internet access.
Using the Test KKM utility for configuration
Entering parameters using the small buttons on the cash register is time-consuming and inconvenient, especially if the Wi-Fi password is complex. Test KKM Incotex's software allows you to configure all parameters from your computer, significantly speeding up the process.
Connect the cash register to your computer via a USB cable. Launch the utility, select your model and COM port number. Go to the "Network Settings" section. Here you will see all available fields.
In the "Network Type" field, select Wi-Fi. Enter the SSID (network name) and access key. You can also check the current firmware version here and, if necessary, update it to improve the stability of the communication module.
Where can I download Test KKM?
The official version of the utility is always available on the manufacturer's website in the support section. Using third-party builds may cause the drivers to malfunction.
After entering all the data, click the Save Settings button. The program will send a command to the cash register. Once the save is complete, disconnect the USB cable and test the cash register in standalone mode.
Troubleshooting connection and driver issues
A common issue is when the cash register sees the network but fails to connect. This may be due to incorrect encryption. Make sure the router is set to the correct standard. WPA2-PSK (AES). Older encryption methods may not be supported by new cash register software.
It's also worth checking the virtual COM port drivers. If the device displays with a yellow exclamation mark in Windows Device Manager, configuration via a PC will be impossible. Reinstall the drivers from the official website.
Sometimes resetting the network settings to factory defaults helps. To do this, find the "Reset network settings" option in the cash register menu or perform a full reflash of the device and clear the settings.
| Problem | Possible cause | Solution |
|---|---|---|
| No list of networks | The Wi-Fi driver is not running. | Check the software version, update the firmware |
| Password error | Incorrect case or layout | Enter the password via PC in the Test KKM utility |
| Weak signal | Distance from the router | Use a Wi-Fi repeater or amplifier |
| No connection with the OFD | Incorrect time or date | Synchronize time in the cash register settings |
Common mistakes and how to fix them
One of the most common errors is an incorrect date and time. Security protocols require the correct time to establish a secure connection to the server. If the checkout date is 2015, the SSL certificates will be considered invalid.
Another problem is a full fiscal storage device or document queue. If unsent receipts have accumulated in memory, the cash register may block new connections by attempting to send old data. It's necessary to wait for the archive to be sent or check the connection to the fiscal data operator.
Check your router settings. Sometimes changing the Wi-Fi channel to a clearer one (1, 6, or 11) can help. Interference from neighboring networks can interrupt the connection at the most inopportune moment.
β οΈ Note: The menu interface and item names may differ depending on the firmware version installed. Always check the firmware version specifications for your model.
Firmware update for stable Wi-Fi operation
The manufacturer regularly releases updates that fix Wi-Fi module bugs. If your cash register is experiencing instability, first check the software version. You can do this in the "About device" section or through the utility on your PC.
To update, download the latest firmware file for your model. Connect the cash register to your computer, run the update program, and follow the on-screen instructions. The process may take several minutes and cannot be interrupted.
After updating, we recommend resetting the settings and re-entering the network parameters. This will help prevent conflicts between old configuration files and the new software code.
What should I do if the cash register can't see my Wi-Fi network?
Make sure your router operates in the 2.4 GHz band. 5 GHz networks are not supported. Check if MAC address filtering is enabled on your router. Try temporarily disabling SSID hiding.
Is it possible to connect to Wi-Fi using SMS authentication?
No, cash registers don't have a browser for entering codes from SMS. For such networks, you need to use a separate router or modem mode on your smartphone, which doesn't require web authentication.
How can I find out the cash register's IP address after connecting?
In the cash register menu, go to "Settings" -> "Network" -> "Status." The current IP address assigned by the router will be displayed there. This is also visible in the Test KKM utility.