Zwave network and group info

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network and group info


The ZWave network info screen is available under Setup > Hardware. If there is a Z-Wave controller in the system (a USB stick for instance), there is a "Setup" button beside it. Click this and the list of controlled nodes appears. At the top right the node management button houses the "groups & network" button. The screen above appears. To the left is a chord diagram that shows which nodes see each other. This is a feature of the Z-Wave mesh network; some devices do not see each other directly but communicate through intermediate nodes. This graph helps you understand how the network communicates. If the Z-Wave network controller has just started up (due to Domoticz start or reboot), it takes a while for the connections to display. Please wait a moment and return to this screen. Hover the mouse over a node to only display the connections for that node; this makes it easier to examine specific connections.

To the right is the group table. It shows the reported groups for each node, plus the nodes that are in the group. Z-Wave groups are an essential part of a functioning system; it operates even without Domoticz or the controller active, so it is a good thing to understand how they work and how they are setup. Groups are not global, but exist per node. Each node has its own group(s), in which you can place other nodes as listeners. If two nodes (devices) have a group 2, this is not the same group. Clicking a node number shows the option to remove the node from that group. If there is a plus symbol in a group, the node has this group enabled. Click the plus symbol to add another node to that group.

An example: the TZ66D Z-Wave Switch has two paddles (left and right). The left paddle controls the lamp attached to it physically. The right paddle only signals groups. The TZ66D has four groups:

  • Group 1: gets a signal when the left paddle is pressed
  • Group 2: gets a signal when the right paddle is pressed
  • Group 3: gets a signal when the right paddle is pressed twice
  • Group 4: gets a signal when the TZ66D is commanded to turn on or off.

Using the group table, you can include another node (lamp for instance) in one of the TZ66D's groups. By putting it in group 2, you can control it though the right paddle. By putting another lamp in group 3, you control that one via a double tap on the right paddle, etc.

Groups also play a big role in where measurement devices (temperature for instance) send their data. Some devices (like the Aeon 4in1) can be configured to send to group 1 (where the controller and thus Domoticz is), but others just send to a fixed group, which requires a receiving device to be put in that group.

The info screen will be extended with more functionality in the future. For now it has the bare necessities ;) There is no scene management (yet), since that can be done through Domoticz itself.

Running Domoticz as a secondary controller

To achieve this, the Domoticz version must be superior to 1660. The actually tested configurations are from Vera systems as master in 3.20 version of Z-Wave and Domoticz running the Aeon S2 (given it will works also with other adapters to Domoticz).

Please remember that Z-Wave device configuration isn't stored in Z-Wave device so it's the master who has stored device parameters, and thus for Domoticz you'll have to re-set all devices parameters.

  • First you have to put the Master in full inclusion power mode, and then set Domoticz (through Hardware / your Z-Wave adapter) in "receive configuration from other controller" after activating Vera to include Domoticz.
  • For the Vera, the Domoticz Z-Wave adapter is recognized as a scene controller, but not well configured.
  • Then the list of device will get transferred to the Domoticz server (Hint: making a heal from Vera may speed-up things).

See also