Master Click PLC Communication: Ignite your Modbus RS485 passion!

90% of industrial automation systems use Modbus for communication. This open standard protocol is used for everyday applications, including monitoring and controlling equipment such as PLCs (Programmable Logic Controllers), remote terminal units, sensors, and more in automation and process control environments. RS-485 typically utilizes twisted pair cables, which consist of two insulated copper wires twisted together. This configuration helps to reduce electromagnetic interference (EMI) and crosstalk from external sources, ensuring a more reliable signal over long distances. Peer-to-peer (P2P) communication is a decentralized communication where two or more devices connect directly to share data or resources without needing a central server. Using the Modbus RTU Serial Protocol, we will connect two Click PLUS PLCs through RS485 in a peer-to-peer fashion. We will share the following information between the two PLCs: One hundred individual bits (0/1—On/Off) will be written and read between the controllers. We will also share ten words (16-bit), which will also be written and read between the PLCs. In this manner, the individual controls can see all the data from each other. Let's get started. More information can be obtained at our website. This includes all of the links mentioned in this video. https://accautomation.ca/mastering-click-plc-communication-modbus-rs485/ 00:00 Mastering Click PLC Communication Modbus RS485! 01:41 Wiring Click PLC RS485 Ports 04:20 Click PLC PLUS Client (Master) Modbus RTU Program 13:40 Click PLC PLUS Server (Slave) Modbus RTU Program 16:57 Monitoring the Click Modbus RTU RS485 Network using Data View 19:44 Creating a Heartbeat for Modbus RTU Serial Communications 26:28 Monitoring and Resetting the Modbus Client Communication Previously, we looked at the following: Click Plus Software Installation https://accautomation.ca/click-plus-software-installation-version-3-00/ https://youtu.be/6uQQzyZ-O3s Establish Communication https://accautomation.ca/click-plus-establish-communication/