Discover all the devices on a network

You can use the ND (Network Discovery) command to discover all devices on a network. When you send the ND command:

1. The device sends a broadcast ND command through the network.
2. All devices that receive the command send a response that includes their addressing information, node identifier string and other relevant information. For more information on the node identifier string, see NI (Node Identifier).

ND is useful for generating a list of all device addresses in a network.

When a device receives the network discovery command, it waits a random time before sending its own response. You can use the NT command to set the maximum time delay on the device that you use to send the ND command.

• The device that sends the ND includes its NT setting in the transmission to provide a delay window for all devices in the network.
• On large networks, you may need to increase NT to improve the reliability of network discovery.
• The default NT value is 0x82 (13 seconds).