RS485 Serial Communication tutorial скачать в хорошем качестве

RS485 Serial Communication tutorial

#rs485 #serialcommunication #plc #industrialautomation #vfd #hmi #scada RS-485 is a serial communication standard introduced in 1983, allowing communication between 32 devices over distances up to 4000 feet. It supports higher speeds than RS-232 and uses simple twisted pair cables. The master-slave concept is essential, with one device issuing commands and the other responding, facilitating efficient communication in industrial automation. You may be interested in these questions: What are the advantages of RS-485 over RS-232? How does the master-slave concept work in RS-485? What types of cables are used for RS-485 communication? आरएस-485 1983 में शुरू किया गया एक धारावाहिक संचार मानक है, जो 4000 फीट तक की दूरी पर 32 उपकरणों के बीच संचार की अनुमति देता है। यह RS-232 की तुलना में उच्च गति का समर्थन करता है और सरल ट्विस्टेड जोड़ी केबल का उपयोग करता है। मास्टर-स्लेव अवधारणा आवश्यक है, जिसमें एक उपकरण आदेश जारी करता है और दूसरा प्रतिक्रिया देता है, जिससे औद्योगिक स्वचालन में कुशल संचार की सुविधा मिलती है। Highlights: 01:41 The video explains the RS-485 serial communication standard, which was developed in 1983. It provides insights into its applications and the significance of master-slave concepts in industrial automation. -The video series covers various industrial communication topics, including previous lessons on communication protocols and the differences between serial and parallel communication methods. -Understanding RS-485 cables and connectors is essential, as they play a crucial role in establishing reliable communication between devices in industrial settings. -The master-slave concept is fundamental to RS-485 communication, allowing one master device to control multiple slave devices effectively. 02:21 RS485 communication standard offers significant advantages over RS232, including support for multiple devices and longer communication distances. It allows for 32 devices to connect over 4000 feet, enhancing connectivity options. -RS232 can only connect two devices, while RS485 supports up to 32 devices simultaneously, showcasing its scalability for complex systems. -The communication speed of RS485 reaches 10 Mbps, making it faster than RS232, which is crucial for high-speed data transfer requirements. -RS485 is an open-source standard, allowing developers to use it freely in their devices without needing permissions or paying royalties, promoting innovation. 04:39 RS-485 communication does not have specific connectors defined, allowing for flexible connections. Companies typically provide communication terminals for device connectivity, facilitating ease of use in different setups. -RS-232 communication, in contrast, has defined connectors like mini-DIN and DB9. These connectors are commonly used in various applications, highlighting the differences between RS-232 and RS-485. -Communication terminals for RS-485 allow for versatile connections without needing special connectors. Users can choose to install connectors based on their convenience and device requirements. -The maximum data transfer rate for RS-485 communication is 10 Mbps, effective over a distance of 40 feet. This speed is crucial for efficient data transmission between devices. 07:00 Communication speed in RS-485 systems decreases as the distance increases, with a speed of 10 Mbps at 40 feet, dropping to 100 Kbps at 4000 feet. This relationship emphasizes the importance of distance management in communication setups. -The communication speed significantly impacts the performance of devices over long distances. Maintaining optimal distance is essential to ensure efficient data transmission in RS-485 setups. -Understanding the master-slave concept in RS-485 communication is crucial. The master device issues commands, while the slave device accepts and executes these commands. -In practical applications, a PLC can act as the master device in RS-485 communication. It controls a slave device, such as a variable frequency drive (VFD), by sending various commands. 09:19 RS-485 communication involves a master device controlling multiple slave devices, allowing for efficient data exchange. Each slave has a unique ID that helps the master identify and communicate with it specifically. -In RS-485 communication, up to 32 devices can be connected, with one acting as the master and the rest as slaves. This structure facilitates organized data management. -A master device issues commands to specific slaves based on their unique IDs. This targeted communication enhances reliability and reduces errors in data transmission. Thanks for watching Contact details- Email- pkkasganj9@gmail.com website- https://www.plctechworld.com/ Message PLC Tech World on WhatsApp. https://wa.me/919599928341 Contact- +91-9599928341