What interfaces does rtu support?
Each manufacturer has different research and development directions, so the interfaces provided are also different. For example, the common interface provided by RTU for hydrology is a 12-bit Gray code interface (reserved), which is compatible with various types of flow meters, pressure, and water quality analyzers. , liquid level, industrial serial camera, PLC and other instruments. In addition, it also provides RS485, RS232, pulse interface, analog input/output interface, relay output/input interface, etc. This type of equipment is expensive, costing several thousand yuan each.
The other is a general-purpose RTU, often used for remote switch control. Application scenarios include: pipe network monitoring, industrial automation supervision, etc. The interfaces provided include common RS485, RS232, analog input/output, and relay input/output. Compared with the above equipment, the price is much cheaper. The current price on the market ranges from 300 to 600.
Universal RTU:
For example, this 4G full network type RTU (model: ZHC4941) developed by our company – Zongheng Intelligent Control Technology provides 8 relay inputs, 8 relay outputs, 8 analog inputs, 1 RS485, and 1 RS232. This product is a multi-interface type, so the price is slightly higher. ￥684.
Of course, there are multi-interface devices and RTU devices with fewer interfaces. For example, this 4G full network RTU developed by our company (model: ZHC493C) provides 1 RS232, 1 RS485, 2 DI, 1 DO, 1 AI. The price is only ￥258. There are many functions too.
If you need to know more functions, you can click to visit the product center of this site to view.
Extensions:
Compared with DTU, RTU has more interfaces and more functions, and can meet more application scenarios. For example, the RTU of Zongheng Intelligent Control supports local logic operations, active collection and reporting, wet and dry node monitoring, etc.