601.3531.367

The RS‑485 communication standard, also known as EIA-485, is an electrical and communication protocol that specifies the use of a differential communication signal in multipoint systems. Developed in the 1970s, it offers high data rates, long-distance communication, and low cost for communication up to several hundred meters. Its popularity is due to its ease of use; it is the de facto standard for most industrial applications.

RS-485 is a two-wire medium for balanced transmission, enabling high data rates up to 10 megabits per second, high noise immunity, and limited power consumption. It is the basis for the industrial communication network protocol, Modbus. It can be used in most applications requiring communication between two or more devices. The protocol is popular for industrial automation, transportation, and other applications that require robust communication over large distances, such as building automation.

The number 601.3531.367 represents the serial number assigned to the device, which is used to uniquely identify a particular device or component on the RS-485 network. It also identifies which type of network the device is connected to, such as a Modbus or Ethernet network. Each device or component is issued a unique serial number, and this serial number is used to communicate with the device or component over the RS-485 network. This serial number can be used to determine the status of a particular device or component, diagnose any errors on the network, and configure the device or component according to application requirements.

The protocol defines how the devices will communicate with one another, as well as the types of data sent and received. The RS-485 standard is primarily based on a point-to-point type of connection, whereby one device sends data over a communications link to one or more other devices. It also supports multi-drop connections whereby multiple devices are connected to the same communication bus.

In terms of application field and working principle, the RS‑485 protocol is most commonly used in industrial automation applications. It is widely used in industrial automation systems where control devices, sensors, actuators, and other devices need to be connected for monitoring and control purposes.

RS-485 communication is based on the principle of differential signaling, which means that two lines of communications are used for both transmitting and receiving data, referred to as the "data-in" and "data-out" lines. The data-in line contains the information sent from the source device, and the data-out line contains the information received from the other device. The data rate is determined by the voltage difference between the data-in and data-out lines. The key factor in RS-485 communication is the termination resistor, which is placed at the end of each data line. This resistor ensures that there is no reflection of signals at the end of the line, and it also helps to reduce noise-induced interference. The typical voltage range of an RS-485 signal is between -5 volts and +5 volts.

In summary, the RS‑485 protocol is a robust communication protocol with a variety of industrial applications. Its data rate, high noise immunity, and low power consumption make it ideal for use in industrial automation and transportation applications. The 601.3531.367 application field and working principle illustrate the serial number assigned to the device and the principles of differential signaling, termination resistor, and voltage range used in the operation of an RS-485 network.