In this blog post, I will explain how to wirelessly extend the P1 connection of your smart meter via the (WiFi) network. This is particularly useful, for example, if you have an electric vehicle charging station but it’s not located near your smart meter. Using the Smart Gateways’ Smart Meter Gateway, you can extend the P1 port wirelessly. This is achieved through your existing WiFi network.

Often, the smart meter is not located in close proximity to the device you want to connect. If the distance is too great, typically more than 5 meters, the signal becomes weak and data from the smart meter may not be received. In such cases, the smart meter gateway can act as an extension cable or signal booster. Since the data is transmitted via the WiFi network, you don’t have to worry about signal loss due to long cables. In fact, you don’t need to run any cables at all!

These Smart Meter Gateways are therefore ideal for connecting your Alfen electric vehicle charging station to the smart meter via the network. This enables the use of load balancing in nearly any situation, promoting more efficient and reliable energy distribution.

Extending the P1 port of the Smart Meter wirelessly

The Smart Meter WiFi Gateway with Active Splitter has a second port that can be used either as a splitter or to replicate data from another gateway.

  1. Remote Gateway Mode: In this mode you can connect this gateway to another smart meter gateway via the network. Data from the other gateway, which is connected to the smart meter, is forwarded to the second port of this gateway. This is particularly useful when your smart meter is located in a different place than where it is needed, such as at your electric vehicle charging station.
  2. Active Splitter Mode: in this mode, the second port functions as an active splitter. Data received through the first port is forwarded to the secondary port. This allows you, for example, to connect an additional P1 device.

Extending the P1 port of the smart meter, what do I need?

To wirelessly extend the P1 port of the smart meter via the network, the following is required:

Smart Meter side:

Side where there is no smart meter but it should be available

The diagram below illustrates a scenario depicting how the P1 port of the smart meter can be extended via the (WiFi) network.

How can I extend the P1 connection of my smart meter?

In the following steps, I will explain how you can wirelessly extend the P1 port of your smart meter via the network.

  1. Connect the first Smart Meter Gateway to the P1 port of the smart meter and link it to the WiFi network as described in the provided manual. It is recommended to assign a static IP address to this gateway. Remember this IP address.
  2. Next, connect the Smart Meter Gateway with Active Splitter to the location where the P1 port is needed. Connect it to the WiFi network following the instructions in the manual.
  3. Login to the Smart Meter Gateway with Active Splitter. Browse to http://ip_adres_gateway:82 and login with username: admin and password: smartgateways. *Replace ip_address_gateway with the actual IP address of the gateway. Now go to the Secondary Port Menu of the Gateway with Splitter:
  4. Enter the IP address of the first gateway in the “Remote Gateway IP” field. Then check the box next to “Enable Forwarding”. Now click on “Submit new values”.
  5. This gateway will now connect to the Smart Meter Gateway connected to the smart meter and forward the data via the network to the 2nd port (OUT).
  6. Next, connect the charging station to the OUT port of the gateway with active splitter.
  7. The charging station will automatically recognize the smart meter and begin load balancing. The status of the connection between both gateways can be monitored through the Secondary Port Menu.

Can the device already connected to my smart meter continue to be used?

If there is already a device connected to your meter, such as a HomeWizard P1 WiFi meter, you can continue using it. In that case, you will also need a Smart Meter WiFi Gateway with Active Splitter at the smart meter. Connect the existing device to the 2nd port of the splitter.

What is the advantage of wirelessly extending the P1 connection?

The signal coming from the P1 port of the smart meter is quite weak. For instance, if you use an extension cable to connect your electric vehicle charging station, the signal may not reach due to resistance in the cable. By transmitting data via the network, Smart Meter WiFi Gateways eliminate this issue, ensuring reliable data transfer. Another advantage is that you don’t need to lay any cables.

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