PDD205A1121 3BHE025335R1121 ABB
PDD205A1121 3BHE025335R1121 ABB
PDD205A1121 3BHE025335R1121 ABB
现场总线是用于现场仪表的数字通信，其信号符号基金会现场总线国际标准。
现场总线双向数字通信特性使得现场仪表和控制设备成为一个完整的在线系统。而且，通过现场总线的多传感功能能够很好地将现场仪表的过程变量如：PV、MV等准确地进行传输。因此，基于基金会现场总线的YEWFLO产品通信功能更强、更灵活，并且在多点接线中减少电缆用量，从而达到降低成本的目的
。technology.
information technology) new trends.
The system is divided into two levels: operation management level and process control level. At the operation management level, not only the traditional control system monitoring operation function is realized
function (operation and display, printing, trend display and alarm), and also complete system hardware diagnosis and data exchange between different systems.
can. The process control stage realizes various loop adjustments including complex control (various PID, ratio, Simith, etc.) and high-speed logic control.
Control, sequence control and batch intermittent control functions.
The internal communication of the process control station (between the controller and various intelligent devices such as I/0 or field instruments) adopts the international standard field controller.
Wire. The field controller supports various field buses such as Profibus. Profibus is the most widely used open field bus in the world.
Line international standard, divided into FMS, DP and PA three levels, DP communication rate can be as high as 12Mb. The CAN (DIN/IS011898 standard) bus
The biggest feature is its super sturdiness and data security. The system of course also supports Modbus. The 
