Blog Archives

RS-422 stands for "Recommended Standard 422." It is a technical standard developed by the Electronic Industries Alliance (EIA) that specifies the electrical characteristics of balanced voltage digital interface circuits. RS-422 is commonly used for serial communication between devices over relatively short distances, typically up to several hundred meters. The standard defines the electrical signaling characteristics, transmission line requirements, and communication protocols for differential signaling, which involves transmitting data using two complementary voltage signals, known as "positive" and "negative," to represent binary data. RS-422 supports full-duplex communication, allowing simultaneous transmission and reception of data, and provides high noise immunity and signal integrity, making it suitable for use in industrial automation, telecommunications, instrumentation, and other applications where reliable and high-speed data transmission is essential. Additionally, RS-422 specifies the physical connector and pinout arrangements for connecting devices using this standard, facilitating interoperability and compatibility between different manufacturers' equipment. By providing a standardized interface for serial communication, RS-422 simplifies system integration, reduces implementation costs, and ensures reliable data exchange between devices in diverse applications and industries.