A modern retail outlet is unthinkable without a stable internet connection for its cash register equipment. Fiscal registrar Atol 91F It is one of the most popular devices in this niche due to its compact size and reliability. However, initial wireless connection setup often presents difficulties for users unfamiliar with network protocols.
To function correctly, an online cash register must not only "see" the router but also have correctly configured network parameters. Errors at this stage result in receipts not being sent to the fiscal data operator (OFD), and the tax service receiving incorrect data. In this article, we'll cover the network configuration process in detail, using official utilities and manual methods.
The main difficulty is that the device may operate in USB modem mode by default or have incorrect IP addressing settings. You'll need to go through the entire process, from physical connection to verifying the connection with the fiscal server. Let's review each step in detail to avoid common configuration errors.
Preparing equipment and checking drivers
Before proceeding with network settings, you need to make sure that the computer sees the device itself. Drivers — this is the foundation without which the software cannot control the hardware. If you haven't yet installed the manufacturer's KKT driver package, you should download it from the official website and install it first.
Connect the cash register to your computer via a USB cable and power it on. A new device should appear in the Windows Device Manager under "Ports (COM and LPT)" or "Atol Devices." If the system returns an error or the device is marked with a yellow exclamation point, the problem lies with the drivers or cable.
⚠️ Caution: Use only a high-quality USB cable no longer than 1.5 meters. A long or cheap cable may charge but not transfer data at the required speed, which will cause problems when setting up Wi-Fi.
After the drivers are successfully installed, open "Driver Test" or any other check-printing program. The device should be recognized as Atol 91FOnly after ensuring stable operation over a wired connection can you move on to wireless settings.
Using the KKT Installation Wizard utility
The easiest configuration method is to use specialized software. The "KKT Installation Wizard" (or "KKT Properties Configuration" in new driver versions) automates routine processes. Run the utility as an administrator to avoid registry access rights issues.
In the program interface, go to the "Device Properties" tab. Here you will see the current connection method. USB is often the default. You need to switch the mode to Ethernet or Wi-Fi, depending on the firmware version and the presence of the module in your model. In some modifications Atol 91F The Wi-Fi module is optional.
Where can I find the serial number?
The serial number (SN) is located on a sticker on the bottom of the device or on a label under the battery. It consists of 16 characters and is required for registration in the OFD personal account.
Switching to wireless network mode often requires executing a special command or changing a switch in the cash register menu. Click the "Settings" button in the utility, then select "Network Settings." Here, you'll need to enter the IP address, subnet mask, and gateway.
If you don't know your network settings, you can find them out using the Windows command line. Enter cmd in the search, launch the console and write ipconfigFind the "Default Gateway" line—this is your router's address, which you'll need to enter at the checkout.
Setting up a static IP address
A critical point is assigning a static IP address. Dynamic addressing (DHCP) can result in the cash register receiving a new address after a router reboot, and the driver will no longer be able to find it. Therefore, using static IP is a mandatory requirement for stable operation.
The address must be on the same subnet as your computer, but not the same as any other device. For example, if your router has the address 192.168.1.1 and your computer has the address 192.168.1.5, you could assign 192.168.1.150 to your cash register.
Enter the data carefully, following the correct format. Even a single digit error will make the device inaccessible. The subnet mask is usually left at the default value. 255.255.255.0, unless you have specific requirements from your system administrator.
☑️ Check network settings
After entering all parameters, click the "Save" or "Write" button. The cash register may reboot. You can now disconnect the physical USB connection if you're switching to a completely wireless setup, but for initial diagnostics, it's best to leave the cable connected.
Configuration via the web interface and cash register menu
Some firmware versions allow network configuration directly through the menu on the cash register screen or through the built-in web interface. To access the web configurator, enter the cash register IP address in the browser. The standard port for accessing Atol fiscal registers is often 5555.
In the device menu, go to "Settings" → "Network" → "Wi-Fi." A list of available wireless networks will be displayed. Find your router's name (SSID) in the list and select it.
| Parameter | Description | Example of meaning |
|---|---|---|
| SSID | Wireless network name | My_Shop_WiFi |
| Security | Encryption type | WPA2-PSK |
| Password | Wi-Fi password | ComplexPass123 |
| IP Mode | Addressing mode | Static |
Please pay attention to the encryption type. Atol 91F may not support older security standards (WEP) or, conversely, the latest WPA3 if the firmware is not updated. The optimal choice is WPA2-PSK (AES).
Enter your wireless network password. Be careful with capitalization and keyboard layout. After saving the settings, the Wi-Fi indicator on the register should light up or change to a flashing pattern, indicating a successful connection.
Troubleshooting connection issues
Even with the correct settings, conflicts can still occur. One common issue is a frequency band mismatch. If your router only broadcasts at 5 GHz, and the POS module only operates at 2.4 GHz, there will be no connection. Make sure the band is enabled on your router. 2.4 GHz.
⚠️ Note: Router interfaces and driver versions are subject to update. If you don't see the steps described, check your specific router's documentation or contact your ISP.
It's also worth checking your Windows firewall or antivirus settings. They may block connections on port 5555, considering it suspicious. Try temporarily disabling protection for diagnostic purposes.
If the cash register "drops out" after a while, it may be too far from the router or the signal may be shielded by the metal structures of the cash register. In such cases, installing an external USB Wi-Fi adapter with an antenna, if the model supports it, or using a repeater can help.
Checking the connection and testing the operation
The final step is verifying the settings. Open the "KKT Driver Test" on your computer. In the device properties, ensure that the connection type is set to "Network" and the correct IP address is specified. Click the "Connection Test" button.
If the device responds "Communication channel open" or displays the firmware version, the setup was successful. Now you can print a test receipt. It should not only print but also be sent to the fiscal data operator (as indicated by the corresponding message on the receipt).
There shouldn't be any timeout errors in the driver logs. If the receipt prints but isn't uploaded, the issue may not be with the Wi-Fi, but with the time or date settings in the cash register itself. Make sure the time is synchronized.
⚠️ Caution: Never turn off the cash register while a receipt is being printed or data is being transmitted to the fiscal data operator (OFD). This may damage the fiscal storage device, requiring its replacement.
Check your connection status regularly, especially after a power outage. Automatic reconnection isn't always perfect on all router models.
Frequently Asked Questions (FAQ)
Is it possible to connect the Atol 91F to mobile Internet via a phone?
Yes, this is possible using the Hotspot mode on your smartphone. However, make sure your phone is using a 2.4 GHz network and that the cash register is assigned a static IP address so the driver always knows where to send data.
What should I do if the cash register doesn't detect the Wi-Fi network?
Check that the Wi-Fi module is enabled in the cash register menu. Also, make sure the network name doesn't contain Cyrillic characters or special symbols that might be incorrectly processed by the firmware.
What port is used for network connection?
By default, Atol drivers use the port 5555If you changed it in the cash register settings, be sure to specify the new port in the device properties in the driver on your computer.
Do I need to re-register my cash register with the Federal Tax Service if I change my connection method?
No, switching from USB to Wi-Fi does not require re-registration with the tax office, as the fiscal number and cash register data remain the same. Only the data transfer channel changes.