It also features embedded circuits protection features such as power isolation, ADI magnetical isolation, and TVS diode. Best known for the simplicity of usage it provides, it also features embedded circuits protection features such as lightning-proofing, resettable fuse, ESD protection and TVS diode. Ultimately, it can be thought of in a way that serial communication is more made for this usage as compared to the common USB and ethernet. Now, why don’t companies just use USB or ethernet to transmit data between their devices? Devices will be linked together via a bus configuration as shown in the picture above. It is like the Universal Serial Bus (USB) or ethernet that we can find in many of our modern computers. Compared to serial communication, USB and ethernet are significantly more complex and expensive. These advantages compared to other alternatives made RS485 popular and used in a widespread amount of instances. RS485 main advantages as compared to other serial communication are tolerance to electrical noise, lengthy cable runs, multiple slaves in one connection, and fast data transmission speed. RS485 provides a means of interconnecting multiple devices in a series using a twisted pair of wires to facilitate data exchange.

RS485 at its core with 2 wires allows half-duplex data transmission. In this setup both the TX and RX share a single pair of wires, therefore it is limited to half-duplex data transmission as the data cannot be transmitted simultaneously to and fro each device. B- lines, representing a two-wire half-duplex configuration, which is the most commonly used wiring method in RS485. This is due to the minimal wiring required due to the wiring configuration requirements of RS485. In the central chemical dosing and dispensing system of China's Hingsen Semiconductor, the configuration comprises central chemical storage tanks coupled with dispensing systems at each process point, controlled through valve boxes to regulate the supply of chemical reagents. Within such a system, RS-485 serves a pivotal role as a bridge, establishing communication of flow information between the central control system and each valve box. By adding another 2 wires, making it a 4 wires system, it allows data transmission in both directions to and fro devices at the same time, also known as full-duplex. Variably, this time both TX and RX have their own 2 wires for data transmission. In RS485 standard, data is transmitted via two wires twisted together also referred to as "Twisted Pair Cable".

The RS485 network must be designed as one line with multiple drops, not as a star or ring topology. Different topology designs suit different network needs and applications, affecting performance, reliability, and scalability. It is unquestionably an ideal choice for industrial equipment use due to its high speed, reliability, safety and versatility. It is also an ideal choice for industrial equipment use due to its high speed, reliability and safety. RS485 transmits binary signals by generating high and low voltages, representing binary 0s and 1s (on and off), enabling efficient long-distance communication in electronically noisy environments. This ensures that all security-related information and incidents are transmitted quickly and with high reliability. This utilization of a differential signal transmission mode effectively mitigates interference and enhances overall communication reliability. B line (or Data-), handles the complementary differential signals. Alarm systems: Rs485 cables in alarm systems help transfer alarm signals and information from alarm devices to the control center. There are different serial communication standards such as RS232, RS422 and RS485. Additionally, data can be transmitted at up to 10MBit/s which is faster than most standards.

SenseCAP Data Logger and IoT Platform Compatible: Convert to a SenseCAP LoRaWAN® sensor with SenseCAP Data Logger and take advantage of quick and easy set-up in just 5 minutes with SenseCAP Mate APP. Another major advantage is that there can be more than one slave in the connection. However, in a full-duplex setup, they are limited to a master and slave communication where slaves cannot communicate with each other. The other devices (the slaves) respond by giving the requested data to the master, or by taking the action requested in the query. Up to 32 slaves can be connected in the system. This means that data can be simultaneously transmitted and received between devices. This means data can be transmitted in both directions to and fro devices one direction at a time. As mentioned, RS485 is used to link devices instead of other means as it provides significant advantages. RS485 is also used in performance venues to control lights and systems such as the one shown below.

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