smiley0603
I. Overview Germany's Siemens (SIEMENS) produced PLC application in China are very wide, in metallurgy, chemical industry, printing production line applications in such areas. Siemens (SIEMENS) the company's PLC products include LOGO, S7-200, S7-300, S7-400, Industrial Networks, HMI human-machine interface, industrial software. Siemens S7 series PLC Small, fast, standardized, and has network communication capability, more powerful, more reliable. S7 Series PLC products can be divided into micro-PLC (such as the S7-200), small-scale performance requirements of the PLC (such as the S7-300) and in the high performance requirements of the PLC (such as the S7-400) and so on. 1. SIMATIC S7-200 PLC S7-200 PLC is the ultra-miniaturization PLC, it applies to all industries, all kinds of occasions, the automatic detection, monitoring and control. S7-200 PLC's power to run both stand-alone, or even into a network able to implement complex control functions
sylviali1109
Electric heating boilers are commonly used in industrial process equipment, process control temperature control is also an important parameter. However, electric heating boilers because of its large time-delay, non-linear, it is difficult to establish a precise mathematical model of the characteristics of the conventional PID control difficult to achieve good control effect, to that end, many people studied the improved PID algorithm control methods. In this paper, the experimental device THFCS liner boiler temperature control object, the use of the improved PID control algorithm to achieve temperature control. Temperature control part of the main use of the Siemens STEP 7 FB58 standard temperature control function blocks in the basis of FB58 adding the rate of change of temperature, according to the rate of temperature change to dynamically set the temperature of PID control of dead-zone, speed up the adjustment rate of PID. In this paper, Siemens S7-300 PLC as a control unit, in STEP7 environment and control procedures for the preparation of the application of WinCC configuration software to monitor the temperature of the boiler. The test results show that the method has better control effect. Keywords: boiler; temperature control; PLC; WinCC; PID
孤山幽灵
我用西门子S7-300的PLC做过6层电梯的, 而且是功能完善的.4层我要做不难,但是我只有S7-300的软件,没200的.还有那组态软件我家里也没有,我只有西门子的分给我我可以帮你编程序.
接上面。(二)观点要创新 毕业论文的创新是其价值所在。文章的创新性,一般来说,就是要求不能简单地重复前人的观点,而必须有自己的独立见解。学术论文之所以要有创新性
写作点拨:可根据会计这个职业写一写自己的长期、短期内的规划,自己的优缺点、以及自己希望自己专业知识有哪些方面的提升等方面来写,例文如下: 1、职业兴趣 我比较喜
毕业论文没有通过,是无法拿到毕业证的。建议:毕业论文每位同学在答辩的时候,尽量尽早进行答辩,这样可以给自己后期预留更多应对突发状态的时间。论文答辩一次没有通过,
摄影技术是进行艺术摄影创作的重要基础条件。艺术摄影通过照相机表达作品的情感和意境,利用摄影技术增加摄影作品的艺术性,没有摄影技术,艺术摄影就无法实现。下面是我为
内容是不同的。具体区别1、毕业设计:在教师指导下,学生就选定的课题进行工程设计和研究,包括设计、计算、绘图、工艺技术、经济论证以及合理化建议等,最后提交一份报告