The RS-485 standard (also known as ANSI/TIA/EIA-485) was developed in the 1980s to allow a master device to communicate with multiple slave devices. RS-485 defines a method for serial transmission using differential signal lines shared by up to 32 devices. Its advantages over RS-232 include higher noise immunity, higher speed, and longer distance. Communication is asynchronous (no system clock). A master device controls data flow to and from the slave device(s). (more…)
Recommended Standard 232 (RS-232) was introduced in the1960s by the telecommunications industry. It defines a simple method for serial communication between a Data Terminal Equipment (DTE) device, such as a computer, and a single Data Communication Equipment (DCE) device, such as a modem or computer peripheral. Originally managed by the Electronics Industry Association (EIA-232), the standard is now maintained by the Telecommunication Industry Association as TIA-232. (more…)
The Universal Serial Bus (USB) originated in 1996 as a way to connect peripherals, such printers and scanners, to a personal computer. Since that time, it has evolved into a broadly used interface on a wide variety of products. (more…)
Panel mount digital controllers are commonly used for process control. However, many digital panel meters (DPMs) can also perform process control functions. A panel meter is a good choice when advanced control functions, such as PID, are not required, and on/off or proportional control is sufficient. Why use a panel meter? (more…)
February 21-23, Orange County Convention Center, Orlando FL
The POWERGEN International® conference and exhibition serves as a business and networking hub for electricity generators, utilities and equipment providers engaged in power generation. Each year power producers, suppliers, consultants, OEMs, and large-scale energy users gather at POWERGEN International® to discuss challenges faced by all energy stakeholders and discover new solutions. (more…)