> 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/device-to-cloud-api/industrial-protocols.md).

# Industrial Protocols

### Introduction

Industrial protocols are used for the communication of various industrial/field instrument with each other. YuDash IoT devices support various industrial protocols to read data from Instruments, Indusial PLC/Assets, Environment sensors etc. This covers major part of [YuDash IIoT Stack](/device-to-cloud-api/yudash-iiot-stack.md):

<figure><img src="/files/FEPVBdUMKutBvGE2x6Ee" alt=""><figcaption></figcaption></figure>

### Supported Industrial Protocols

YuDash IoT devices support various industrial protocols. Please refer to&#x20;

<table><thead><tr><th width="187">Industrial Protocol</th><th>Details and References</th></tr></thead><tbody><tr><td>Modbus/RS485</td><td><p>This is one of the most popular serial protocol for industrial applications like Energy/Power, Process Control.</p><p></p><p>The documentation is covered within <a href="/pages/boyvS5GcUSDCf6Bsonve">LYNX User Manual</a>. Integration with popular RS/485 devices is covered in <a href="/pages/9YszpMLmuP0ZnSzchyL3">Industrial Equipment Integration Guide</a>.</p></td></tr><tr><td>Modbus TCP/IP</td><td><p>Modbus TCP/IP is a popular protocol with PLC/HMI and advanced machine. It uses the simplicity of Modbus, along with reliable TCP/IP network.</p><p></p><p><a href="/pages/t3aQRFuIS7UJ17DccNmI">Modbus TCP/IP section of YuDash LYNX user manual</a> provides necessary documentation.  </p></td></tr><tr><td>Analog Inputs</td><td><p>Analog inputs include 0-20mA, 0-10V devices. <br><br>YuDash LYNX Data Logger supports 0-20m Analog input. The <a href="/pages/nLhKbeOzBFfheG2BwDHf">analog documentation</a> along with <a href="/pages/F4IzIZ1GCsaJWjOfrG1s">data scaling feature</a> is covered in LYNX user manual.</p><p></p><p>For higher channels (or 0-10V DC), one can use various instruments, as covered in <a href="/pages/3REC4e3xCXbq6pLmZBSa">process control integration guides</a>.</p></td></tr><tr><td>HTML Parsing</td><td><p>Many legacy instrument and environment analyzers have on-board local-web server. There is no industrial procotol available to communicate. </p><p>YuDash LYNX provides flexible <a href="/pages/QTySMnR7hv3YZcwOKwiZ">HTML Parsing feature</a> to extract data from local web-server over ethernet!</p></td></tr><tr><td>Digital Sensors</td><td>Latest instrumental sensors use digital protocols like I2C, Two Wire protocols, instead of 4-20mA. This ensures an accurate process. <br>These are documented in <a href="/pages/Yb321MPvIqvRBvxHo49y">Digital Sensors Section of LYNX User Manual</a><br></td></tr><tr><td>SNMP</td><td>SNMP (Simple Network Management Protocol) is typically used for LAN based management. YuDash supports SNMP to read industrial assets (eg: UPS) </td></tr></tbody></table>