Many small business owners face the need to quickly transfer fiscal data to the OFD, and this requires a stable network connection. Model Mercury 115F It's one of the most popular fiscal registrars due to its reliability and affordability. However, the device often doesn't come pre-configured for your local network, requiring manual configuration.
Setting up a wireless connection on this device may seem complicated at first glance, but the process is quite logical if you know the steps. You don't need to be a programmer or have in-depth knowledge of network protocols to complete this task. Simply follow the steps described in this article and carefully observe the symbols displayed on the device's screen.
Before you begin navigating the cash register menu, make sure you have access to your router and know the password for your Wi-Fi network. If you plan to use a static IP address, reserve it in advance to avoid address conflicts in the future. This will help avoid most common errors during the first setup.
Preparatory stage and equipment testing
Before starting the setup, you need to make sure that the device itself is in good working order and that all necessary components are available. Fiscal registrar The printer must be connected to a power source and in good working order. Make sure the receipt paper is loaded correctly and the printer lid is closed, as some models may lock up when the lid is open.
You will also need a computer or laptop with the setup utility installed, or access to the web interface if the model supports direct connection. In the case of Mercury 115F The main tool is often specialized software from the manufacturer, which allows you to control network parameters more flexibly than through the buttons on the case.
⚠️ Important: Make sure your device's firmware version is up-to-date. Older versions of the software may contain bugs in the wireless module, which are fixed in newer releases.
It's important to have your wireless network information ready. You'll need the network name (SSID) and password. If your network is hidden, you'll need to manually enter the SSID, as automatic search may not reveal hidden access points. Write this information down or keep it handy to avoid entering it incorrectly.
☑️ Check before setup
Connecting to a computer for initial configuration
To make changes to network settings, a wired connection to a personal computer is most often used. This ensures a stable connection while transferring configuration files. Connect Mercury 115F to the computer via a USB cable, using the appropriate port on the motherboard or laptop.
After physically connecting, you need to run the driver software or configuration utility provided by the manufacturer. In the program interface, you need to select the correct COM port assigned to the system when connecting the device. If the port is incorrect, there will be no connection to the cash register, and you won't be able to change the Wi-Fi settings.
In the program menu, find the section responsible for network settings or interface settings. Here you'll see options for switching between Ethernet, Wi-Fi, and GSM. You'll need to activate the wireless module. Sometimes, a device reboot is required after enabling the module in the software for the changes to take effect.
If the port isn't automatically detected, check the Device Manager in Windows. The device may appear as unknown hardware or require manual installation of a virtual COM port driver. Without a working driver, further configuration is impossible.
Configuring wireless network settings via the menu
After activating the Wi-Fi module in the driver, proceed to entering network parameters. Find the list of available networks in the program interface or on the device screen (if the model supports keyboard input). Select your access point from the list or enter the name manually if the network is hidden.
Pay special attention to the choice of encryption type. For modern networks, the standard is WPA2-PSK or WPA3Older protocols like WEP or WPA (without the "2") are not recommended due to their poor security, although some older routers may require them. Make sure your POS settings match your router settings.
| Parameter | Meaning | Description |
|---|---|---|
| SSID | Network name | The name of your Wi-Fi hotspot |
| Security | WPA2-PSK | Connection protection type |
| Password | Password | Network Access Key (case sensitive) |
| IP Mode | DHCP / Static | IP address acquisition mode |
Entering your password requires care, as characters may be masked by asterisks or not displayed at all on the device screen until confirmation. Use the navigation keys to navigate through the characters and select the desired letters and numbers. Once you've entered all the information, save the configuration.
Using the Configuration Utility (Driver Program)
Configuration software Mercury 115F Provides a more user-friendly interface than buttons on the device's body. The utility often features a "Network" tab, where you can not only set the SSID but also configure a static IP address, subnet mask, and gateway. This is critical for corporate networks with strict security policies.
Some software versions offer a settings copying feature. You can configure one cash register as a master, save the configuration to a file, and then upload it to other devices. This significantly speeds up the process of equipping a retail outlet with multiple fiscal registers.
⚠️ Important: When changing the IP address or network operating mode (from DHCP to static), make sure that the new address is not already occupied by another device on your local network.
You can also check the signal level in the utility (RSSI). If the signal is too weak, the cash register will operate erratically, and receipts may be sent to the fiscal data operator (OFD) with a significant delay. In this case, it's worth considering installing a repeater or relocating the router.
What should I do if the utility doesn't see the cash register?
Make sure the drivers are installed correctly. Try the USB port. Check if the device is blocked by an antivirus or Windows Firewall. Sometimes restarting the print service or the utility itself as an administrator helps.
Connection problems and their solutions
Even with the correct setup, situations may arise when Mercury 115F won't connect to Wi-Fi. One common cause is incompatibility of frequency bands. Many older or budget models of fiscal recorders only support the frequency band 2.4 GHz and do not see 5 GHz networks.
If your router broadcasts a single network with band steering, try separating them into two different SSIDs (e.g., HomeWiFi and HomeWiFi_5G) in the router settings. Connect the cash register to the 2.4 GHz network. This often solves the network "invisibility" issue.
Another common issue is MAC address filtering. If your router settings are whitelisted, you need to find the cash register's MAC address (usually printed on a label on the bottom or displayed in a printout) and add it to the router's allowed MAC addresses.
It's also worth checking the date and time settings on your device. If the time is out of sync, errors may occur when attempting a secure connection (HTTPS) to the OFD servers, which the user may mistake for a Wi-Fi issue.
Checking connection quality and diagnostics
After a successful connection, you need to ensure the channel is stable. For this, you can use a test check, which often contains technical information, including network connection status and signal strength. Look for "Link Status: Connected" or similar indicators.
Check the data transfer speed by sending several test messages. If the messages are sent instantly, the setup was successful. If the process takes more than 10-15 seconds, the signal strength may be insufficient or the channel may be congested by neighboring networks.
For a more thorough diagnosis, you can use a ping to the gateway or OFD server, if the device or utility's functionality allows it. A stable ping without packet loss is a sign of a well-configured network. High ping or packet loss require adjustments to the router's settings.
⚠️ Please note: Software interfaces and device menus may be updated by the manufacturer. The layout of items may differ slightly from that described in the instructions.
Check the device's operation regularly, especially after scheduled router reboots. Some cash register models may not have an automatic reconnection feature if the connection is lost and may require a manual restart.
Frequently Asked Questions (FAQ)
Is it possible to connect the Mercury 115F to a hidden Wi-Fi network?
Yes, this is possible, but it requires manually entering the SSID. You won't see it in the list of available networks. You need to select "Enter manually" or a similar option in the Wi-Fi settings menu and enter the network name exactly, maintaining proper case.
Why doesn't the cash register see my Wi-Fi router?
Most likely, your router only operates in the 5 GHz band or uses the Wi-Fi 6 (ax) standard, which the cash register module may not support. Try enabling compatibility mode (802.11 b/g/n) and the 2.4 GHz band in your router settings.
Do I need to set up a static IP for my fiscal registrar?
For a home network or a small store, DHCP (automatic IP acquisition) is sufficient. A static IP is necessary for larger networks with firewall rules that restrict internet access to specific addresses, or for port forwarding.
Are Wi-Fi settings reset when the cash register is turned off?
No, the settings are saved in non-volatile memory after switching on. Mercury 115F The device should automatically attempt to connect to the last known network. If this doesn't happen, the device's battery may be dead or the firmware may be corrupted.