Organizing retail operations on the move or in locations with complex wired infrastructure requires a reliable communication channel for the fiscal storage device. Cash register Mercury 185F It's one of the most popular wireless networking solutions for small businesses. However, initial connection setup often presents difficulties for users unfamiliar with the device's menu system.
Modern requirements for online cash registers require instant data transfer to the fiscal data operator (FDO), which is impossible without a stable internet connection. Using a smartphone as a hotspot (tethering) is the most flexible option, allowing you to work in areas without a wired internet connection. In this article, we'll detail the process of pairing your cash register with your mobile device's Wi-Fi network.
It's worth noting that proper configuration affects not only the receipt processing speed but also the integrity of fiscal data. Configuration errors can lead to the fiscal drive memory being overflowing if receipts aren't sent to the cloud. Therefore, it's important to carefully follow the steps described below.
Preparing the cash register and checking the completeness
Before you begin setting up a wireless connection, you need to make sure that the device itself is in good working order. Cash register It must be fully charged or connected to a power source, as the screen may remain lit for an extended period during setup. Make sure you have a SIM card if you plan to use a GSM modem as a backup channel, although in this case, we're specifically interested in the Wi-Fi module.
Turn on the device by pressing the "ON" button on the keyboard. After the operating system loads, you will see the main menu. Make sure the correct date and time are displayed on the screen, as this is critical for receipt fiscalization. If the time is incorrect, it must be corrected before beginning the network settings.
⚠️ Attention: Make sure your cash register model has a Wi-Fi module physically installed. Basic models may not have one, and software configuration will be unsuccessful in this case.
To work in hotspot mode, your smartphone must have an active data plan with an Internet traffic package. Mercury 185F It doesn't create internet; it only connects to an existing network. Also, find out the password for your Wi-Fi network in advance, as data entry will be done using buttons on the checkout, which isn't always convenient.
Setting up a hotspot on a smartphone
The first step is to properly set up internet sharing from your mobile device. The Android and iOS interfaces differ, but the steps are similar. You need to activate "Access Point" or "Tethering" mode. In this mode, the phone creates a local wireless network to which the cash register can connect.
Go to your phone's settings and find the section responsible for connections. It's usually called "Connections," "Network & Internet," or "Tethering & Personal Hotspot." Select "Wi-Fi Hotspot." It's important to set a descriptive network name (SSID) here to avoid confusing it with other networks in public areas.
Pay special attention to the type of security. Encryption protocol must be set to WPA2 PSK. Older or experimental protocols may not be supported by the cash register. Create a strong password that is easy to enter using the cash register's numeric keys, avoiding complex special characters.
- 📱 Turn on mobile data on your phone to ensure internet access for the cash register.
- 📡 Set maximum compatibility in the access point settings (2.4 GHz band).
- 🔒 Write down your Wi-Fi network password to avoid entering it incorrectly at the checkout.
Once the hotspot is enabled, your phone will begin broadcasting a signal. The smartphone screen will typically display the number of connected devices—currently, there should be zero. Don't turn off your phone's screen completely, or the system will suspend Wi-Fi to save power.
Step-by-step instructions for connecting the Mercury 185F to Wi-Fi
Now let's move on to the fiscal registrar settings themselves. All actions are performed through the cash register menu. The sequence of keystrokes must be precise, as navigation is limited to a limited set of buttons. First, log in to administrator mode if a password is required (often 30 or 1111, depending on the software version).
In the main menu, select "Settings" (or press the corresponding function key if it's displayed on the screen). Then, go to "Network Settings" or "Interfaces." Here you'll see a list of available connections. Select "Wi-Fi Setup."
Menu → 7. Settings → 3. Network → 1. Wi-Fi → OnThe checkout will begin searching for available networks. In the list that appears, find the name (SSID) of the hotspot you set up on your phone. Select it and press the confirmation key (usually "B" or "Enter"). A password entry field will open.
☑️ Connection algorithm
When entering your password, use the navigation buttons to select characters. Numbers are entered directly, while letters are selected by cycling through the corresponding keys. After entering the entire string, confirm the action. The cash register will attempt to obtain an IP address from your phone. If successful, a Wi-Fi icon will appear in the status bar.
⚠️ Attention: When entering your password, be careful with letter case. The cash register distinguishes between uppercase and lowercase characters; a single letter error will result in connection failure.
Configuring network and data operator parameters
After successfully connecting to the router (phone), you need to ensure that the cash register is correctly configured to work with the fiscal data operator. Go to the "Fiscal Data Operator Settings" section. Your operator's address and port should be specified here. This information is usually sent via SMS or email after the agreement is signed.
Check if the "Enable OFD" box is checked or checked. If this option is disabled, receipts will be stored in the fiscal data recorder's memory but will not be sent to the internet, which will eventually lead to overflow. Also, make sure the correct connection type is selected—in our case, it's Wi-Fi, not Ethernet or GSM.
| Parameter | Default value | Recommended value | Status |
|---|---|---|---|
| Network type | Wi-Fi | Wi-Fi | Actively |
| DHCP | Included | Included | Actively |
| Port OFD | 20161 | 20161 (or yours) | Check |
| Time-out | 30 sec | 30-60 sec | Norm |
It's important to check the time settings via the NTP protocol. Enable internet synchronization in the time settings menu. This will allow the cash register to automatically adjust its clock every time it connects to the network, preventing fiscalization errors due to time desynchronization.
What should I do if my cash register can't see the network?
Make sure your phone isn't using a hidden SSID. Also, try resetting your phone's access point and retrying the checkout search.
Connection diagnostics and test check
Once the settings are complete, you need to run diagnostics. In the cash register menu, find "Diagnostics" or "Connection Test." Run a connection test with the OFD server. The device will send a test data packet and a response. Successful completion of the test is confirmed by the message "Connection established" or similar.
If the test fails, the cash register will display an error code. The codes can be deciphered in the user manual, but most often the problem is related to an incorrect password, a weak signal, or incorrect date settings. Try moving your phone closer to the cash register to rule out signal issues.
The final step is to print a test receipt. Print any item worth 1 ruble and check the printed result. The receipt should contain a QR code and a message confirming data transfer to the OFD. If you see the message "Fiscal indicator: Transferred to OFD," the connection was successful.
- ✅ Run a payment status report to see the connection status.
- ✅ Run a test receipt and check for the phrase about the OFD.
- ✅ Make sure the receipt is not marked as "Not Transmitted."
Possible errors and how to fix them
During use, you may encounter a situation where a previously working connection has disappeared. This is often due to the phone changing the access point's IP address or entering power-saving mode, disabling the Wi-Fi module. Check that the access point is active on your smartphone.
Another common issue is a cash register clipboard overflow. If the cash register has been offline for a long time, a large number of receipts may have accumulated. When the connection is restored, it will begin sending them one by one. At this point, the cash register may operate more slowly than usual. Wait for the transfer to complete.
If the cash register displays "No connection to the OFD" but your phone has internet access, check that you've entered the correct login and password for the OFD website in the cash register settings. Sometimes users confuse the password for their personal account and the password for connecting the equipment.
⚠️ Attention: Carrier interfaces and access point settings on smartphones may be updated. If the standard menu paths don't match, please refer to the instructions for your specific phone or provider.
If the issue persists, try resetting the cash register's network settings to factory defaults and reconnecting. Updating the cash register's firmware via a USB cable can sometimes help, as new software versions contain fixes for Wi-Fi modules.
Why does the cash register lose Wi-Fi connection?
Most likely, your phone is blocking background activity or the screen is turning off, interrupting the connection. Set your phone to always use modem mode.
Frequently Asked Questions (FAQ)
Is it possible to connect Mercury 185F to 5 GHz Wi-Fi?
In most cases, no. The modules installed in cash registers of this class operate only in the 2.4 GHz band. Make sure your phone is broadcasting in this standard.
What should I do if the cash register displays "Error connecting to OFD"?
Check your SIM card balance (if using a modem) or your phone's internet connection. Also, double-check your OFD username and password entered in the cash register settings.
How many receipts can be stored in memory if there is no Wi-Fi?
The fiscal storage device is designed to store thousands of records, but the law requires them to be transferred within 30 days. However, it's best to limit the data to 3-5 days without internet access to avoid issues with the transfer buffer overflowing.
Do I need to reconfigure Wi-Fi after turning off the cash register?
No, the settings are saved in non-volatile memory. When turned on, the cash register will automatically attempt to connect to the last known network if it's within range.