Modern electricity metering systems require reliable data transmission, and the use of wireless interfaces is becoming the de facto standard. Metering device Mercury 185F It's one of the most popular solutions in this field, offering flexibility in communication methods. However, for the device to transmit readings automatically, its built-in communication module must be properly configured.
The configuration process may seem complicated at first glance if you're new to industrial interfaces. In reality, the steps are strictly defined and repeatable for most firmware versions. The key point The problem here is the presence of specialized software and an adapter, since it is impossible to change the network parameters through the menu of the meter itself.
In this article, we'll cover all the steps involved in preparing equipment, configuring network parameters, and troubleshooting the connection. You'll learn which parameter values are mandatory and where variability is acceptable. We'll also cover security and data transfer stability, which are critical for commercial metering.
Necessary equipment and preparation
Before you begin setting up a wireless connection, you need to make sure you have all the required equipment. The meter itself Mercury 185F There are no buttons or screen for entering WiFi passwords, so all operations are performed remotely. You'll need a PC or laptop running Windows, as the built-in software runs on that operating system.
The central element of the setup chain is the communication interface. The adapter is most commonly used. Mercury 221 or similar devices that support optical fiber or RS-485. Without this device, physical connection to the meter's terminal block is impossible. Make sure the adapter drivers are installed correctly and the system sees the connected device in Device Manager.
- 💻 A laptop or PC with Windows OS (7, 10 or 11) installed.
- 🔌 Interface converter (for example, Mercury 221 or USB-RS485).
- 🔧 Software "ACS Configurator" or "Terminator".
- 📡 Authorization data for the provider's network or the parameters of your local network.
It is important to check the integrity of the wires and the reliability of the contacts before applying power. Optical port The meter's front panel must be clean, free of scratches and dust that could interfere with readings. If you are using an RS-485 adapter, ensure that wires A and B are connected to the appropriate terminals (10 and 11, respectively) without reversing the polarity.
⚠️ Attention: All work involving connecting wires to the terminal block must be performed only with the meter's power supply disconnected. Failure to do so may result in electric shock or damage to the interface equipment.
Installing and running software
To configure the metering device, specialized software provided by the manufacturer is used. The most universal tool is the "ASU Configurator" program, which supports a wide range of devices in the series. MercuryYou can download the latest version from the manufacturer's official website, in the technical support or documentation section.
After installing the program, you need to create a new project or open an existing one. In the main interface window, select the type of connected device from the list. Find the model in the device tree. 185F Make sure you've selected the correct firmware version if the program prompts you for this information automatically. Selecting the wrong model may result in incorrect settings.
The communication port can be configured in the "Settings" menu or via a dedicated toolbar. You need to select the COM port number assigned to the adapter when connected to the computer. The data transfer rate for an optical port is typically 9600 bit/s, and for RS-485 it can vary, but the standard value is also often 9600 or 4800.
What should I do if the program doesn't see the counter?
Make sure the correct COM port is selected. Check that the port isn't occupied by another application. Try changing the baud rate in the program settings. Make sure the adapter is securely inserted into the meter's optical port.
Connecting to the meter and authorization
The physical connection is complete, the drivers are installed, and the software is running—it's time to establish a connection with the device. Click the "Connect" button in the software. If the port settings are correct, you'll see the current readings and the device's status. However, to make changes to the WiFi settings, you'll need to log in to administrator mode.
Authorization is a critical step that protects the meter from unauthorized access. By default, the password on new meters often matches the device's serial number or is a universal one. For "Administrator" or "Operation" access levels, you will need to enter the correct password. If the device has been previously used, the password may have been changed by the energy company.
In the authorization window, select the access level that allows you to change connection settings (usually "Administrator"). Enter the password in the appropriate field. After successfully logging in, previously blocked tabs will become available. You can now proceed to configuring the network interface.
☑️ Check before setup
Configuring WiFi module parameters
Let's move on to the main step—configuring the wireless module. In the "ASU Configurator" software, navigate to the section responsible for communication parameters. This section may be called "Communication Settings," "Wi-Fi Settings," or located in the device profile under the corresponding tab. Here you'll see fields for entering network data.
First, you need to select the module's operating mode. The "Subscribe" mode is usually used to transfer data to the server system. Client (Client) mode if the meter connects to an existing router. If the meter itself distributes the network to collect data from other devices (less common for the 185F, but possible in cascaded configurations), AP (Access Point) mode is selected. In 95% of cases, Client mode is required.
Fill in the following fields according to your wireless network settings:
- 📶 SSID: the name of your WiFi network (the exact name of the router).
- 🔐 Security Mode: encryption type (usually WPA2-PSK or WPA/WPA2).
- 🔑 Key/Password: WiFi network password.
- 🌐 IP Mode: IP acquisition mode (Static, DHCP – dynamic).
Pay special attention to the password field. In some software versions, characters may not appear as you type, or may be hidden by asterisks. Make sure CapsLock is not enabled and the correct keyboard layout is selected. After entering all the data, be sure to click the "Save" or "Save Parameters" button to save the configuration to the meter's memory.
⚠️ Attention: When entering your WiFi password, make sure you use special characters supported by the module. Some older firmware versions may not handle rare special characters correctly. It's best to use a combination of letters and numbers.
Setting up the server and transmission protocols
Simply connecting to WiFi isn't enough—the meter needs to know where to send data. To do this, configure the data collection server (ASTUE). In the same communication settings section, find the "Telemetry" or "Server" subsection. Here, enter the IP address or domain name of the energy company's server and the connection port.
The data transfer protocol is another important parameter. For meters Mercury protocols are often used Mercury-TCP, Modbus TCP or specific AMR protocols. The choice of protocol depends on the requirements of the receiving party. If you're setting up a meter for your own use (private use with your own server), you can choose any convenient protocol supported by your software.
The polling interval determines how often the meter communicates. Too short an interval can waste resources, while too long an interval will delay data collection. The optimal value for commercial metering is considered to be between 15 minutes and 1 hour, but the exact value is determined by the contract with the power grid.
The table below provides approximate parameter values for a typical server connection setup:
| Parameter | Meaning | Description |
|---|---|---|
| Opening hours | Client | Connecting to an existing network |
| Protocol | Mercury TCP / Modbus | Depends on the server |
| Server port | 40001 / 502 | Standard telemetry ports |
| Interval | 900 sec | 15 minutes between dispatches |
Checking the connection and diagnostics
After saving all settings, you must reboot the meter or communication module for the changes to take effect. The software should display a signal quality indicator (RSSI). If the signal level is high (e.g., above -70 dBm), the physical connection to the router has been established successfully.
Next, check the event log. The counter keeps a log of connection attempts, successful authorizations, and transmission errors. If you see the status "Connected" or "Connection established," this means the WiFi is working. However, this doesn't guarantee that data is being transmitted to the server.
For a complete diagnosis, use the built-in tests in the configurator. You can send a test data packet or request instantaneous readings over the network. If the data arrives, the setup was successful. If not, check that the gateway IP address and DNS servers are correct in the TCP/IP settings.
Common mistakes and how to fix them
During setup, users often encounter common problems. One of the most common is the "No connection with the device" error during the cable connection process. This is usually resolved by checking the COM port or reconnecting the adapter to a different USB port. Restarting the program with administrator rights also helps.
Another common issue is that the meter sees the WiFi network but won't connect. This could be due to MAC address filtering on the router. In this case, you need to find the MAC address of the meter module (indicated on the label or in the "About" menu) and add it to the router's whitelist. Also, check if you're using a hidden network (SSID), which the module might not see.
If the meter connects to WiFi but doesn't send data to the server, check your firewall and antivirus settings on your PC (if the server is local) or make sure the ISP's server address is correct. Sometimes the issue stems from incompatible WiFi security standards (for example, attempting to connect to WPA3 through a module that only supports WPA2).
⚠️ Attention: Communication module specifications and software interfaces may be updated by the manufacturer. Always consult the latest operating manual for your specific firmware version and hardware revision of the meter.
Conclusion
Setting up WiFi on the meter Mercury 185F — a process that requires attention to detail, but is quite accessible with the right instructions. A properly configured wireless module ensures reliable and transparent energy metering, eliminating the need for manual monthly readings.
The key is to follow the correct sequence: preparing the equipment, installing the software, physically connecting, logging in, and entering network parameters. Keep security in mind and always verify the results with a test request. If you encounter any difficulties, consult the technical documentation or contact your energy service provider's support team.
What is the default password for the Mercury 185F meter?
The factory password is often the same as the device's serial number (8 digits) or is a universal password (e.g., 111111 or 777777). The exact information is provided in the device's datasheet.
Why doesn't the meter see my WiFi network?
The module may not support the 5 GHz standard (it only works at 2.4 GHz), may not detect hidden networks (SSID Hide), or may be located too far from the router. Encryption incompatibility is also possible.
Do I need to pay for WiFi data transfer?
Using WiFi is free if you own the network. However, traffic is drawn from your home internet connection. Transmitting meter readings consumes minimal data.
What to do if you forgot your administrator password?
If the password has been changed by the user and lost, the device will need to be reset to factory settings (which may require calling a specialist) or contacting the organization that performed the last setup.
Is it possible to use an external antenna module?
Some 185F models allow for connecting an external antenna to improve signal strength if the meter is installed in a metal enclosure. Check the housing for the connector.