NB2W56R-11

①Allen-Bradley(美国AB)系列产品》

②Schneider(施耐德电气)系列产品》

③General electric(通用电气)系列产品》

④Westinghouse（美国西屋）系列产品》

⑤SIEMENS(西门子系列产品)》

⑥销售ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic、Robots、MOTOMAN Robots。

⑦estinghouse（西屋）： OVATION系统、WDPF系统、MAX1000系统备件。

⑧Invensys Foxboro（福克斯波罗）：I/A Series系统，FBM（现场输入/输出模块）顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数据通信及处理等。Invensys Triconex: 冗余容错控制系统、基于三重模件冗余（TMR）结构的zui现代化的容错控制器。

⑨Siemens(西门子)：Siemens MOORE， Siemens Simatic C1，Siemens数控系统等。

⑩Bosch Rexroth（博世力士乐）：Indramat，I/O模块,PLC控制器,驱动模块等。

◆Motorola（摩托罗拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。
采购美国、德国、法国、意大利等欧盟国家工控产品、备品备件

Here a / D, mostly current, or voltage, also has temperature. A in d/a, mostly voltage, or current. The change scale of voltage and current is mostly 0-5V, 0-10V, 4-20mA, and some can also deal with positive and negative values. The D and minicomputers here are mostly 8-bit binary numbers, and the medium and large ones are 12 bit binary numbers. A/d and d/a have single way and multi-channel. There are many input and output relays with multiple channels. With a/d and d/a units, the remaining processing is digital, which is not difficult for PLC with information processing ability. Medium and large PLC can be processed more strongly. It can not only add, subtract, multiply and divide numbers, but also open square and interpolation, but also carry out floating-point operation. Some PID instructions can perform share, differential and integral operations on error system, and then produce corresponding output. It can be calculated by the computer.
So it is possible to use PLC to control analog quantity.
PLC can control analog quantity, and a / D / a unit, and can control with PID or fuzzy control algorithm, which can get high quality control. The advantage of using PLC to control analog quantity is that the switch can also be controlled when the analog quantity is controlled. This advantage is not available by other controllers, or the completion of control is not as convenient as PLC. Of course, if the system is purely analog, PLC may not be better than regulator in performance price ratio.