{"id":39118,"date":"2025-10-20T13:07:51","date_gmt":"2025-10-20T18:07:51","guid":{"rendered":"https:\/\/www.dmcinfo.com\/?p=39118"},"modified":"2025-12-23T09:44:56","modified_gmt":"2025-12-23T14:44:56","slug":"lin-communication-in-labview-with-ni-xnet","status":"publish","type":"post","link":"https:\/\/www.dmcinfo.com\/blog\/39118\/lin-communication-in-labview-with-ni-xnet\/","title":{"rendered":"LIN Communication in LabVIEW with NI-XNET"},"content":{"rendered":"\n

Modern vehicles rely on dozens of low-cost embedded nodes to control everything from window lifts to seat heaters. Many of these devices communicate over LIN <\/strong>(Local Interconnect Network) a simple, deterministic serial bus designed for low-bandwidth automotive applications.<\/p>\n\n\n\n

For engineers working in test and validation, LIN presents a unique challenge: it\u2019s easy to wire up but not always straightforward to automate, especially when diagnostic messages (UDS) come into play. Fortunately, NI XNET<\/strong> provides a unified way to manage both standard broadcast LIN communication and higher-level diagnostic protocols with minimal effort.<\/p>\n\n\n\n

NI XNET Hardware Setup for LIN Communication<\/h2>\n\n\n\n

In the simplest test scenario, we have a PC based bus master and a device under test (slave device).<\/p>\n\n\n\n

\"LIN<\/figure>\n\n\n\n

The bus master is a PC connected to the LIN bus through an NI compactDAQ chassis, NI-9860 XNET module, and a TRC-8456 LIN dongle.<\/p>\n\n\n\n

\"BUS<\/figure>\n\n\n\n

Configuring Broadcast LIN Communication in LabVIEW<\/h2>\n\n\n\n

Configuring broadcast LIN starts by loading the LIN Definition File (LDF) into the NI-XNET Database Editor and assigning it an alias. For this example, we\u2019ll use an example LDF from NI.<\/p>\n\n\n\n

\"Alias<\/figure>\n\n\n\n

Once the LDF is loaded, a simple VI can start communication with the Device Under Test. Here\u2019s what\u2019s happening in the below VI.<\/p>\n\n\n\n

    \n
  1. Create Input and Output Sessions\n