> For the complete documentation index, see [llms.txt](https://docs.yudash.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yudash.com/integration-guides/industrial-instruments/energy/l-and-t-wl-4040.md).

# L\&T WL 4040

<table><thead><tr><th width="327">Parameter</th><th>Description</th></tr></thead><tbody><tr><td>Instrument Type</td><td>Dual Source Energy meter</td></tr><tr><td>Model Number</td><td><a href="https://www.lntebg.com/ems/pdf/4.%20WL-WC%204040%20Dual%20Source%20meter.pdf">WL-4040</a></td></tr><tr><td>Brand</td><td>Larsen and Toubro</td></tr><tr><td>Category</td><td>Energy Meters</td></tr><tr><td>Protocol</td><td>RS485/Modbus </td></tr><tr><td><strong>Modbus/RS485 Setting</strong></td><td></td></tr><tr><td>Default Baud Rate </td><td>9600 8N1</td></tr><tr><td>Typical Data Type</td><td>Float LSB</td></tr></tbody></table>

## Communication Wiring

<figure><img src="/files/5VKuZ9ugPH0GZvpDSsJa" alt=""><figcaption></figcaption></figure>

## Modbus Configuration in YuDash

<figure><img src="/files/QCf09dy0qyeFPWHXhDiI" alt=""><figcaption></figcaption></figure>

## Instrument Read in Modscan Software

<figure><img src="/files/KmCr5kU02bfo40BO7Y6V" alt=""><figcaption></figcaption></figure>