自营HE693THM809C备件

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HE693THM809C统主要由被控对象、传感器、I/O接口、计算机及执行机构等部分组成。
本次实训是借助MCGS组态软件平台来完成组态监控系统人机界面制作和程序的设计的。MCGS(Monitor and Control Generated System, 通用监控系统）组态软件是北京昆仑通态软件公司研发的基于Window平台的，用于快速构造和生成上位机监控系统的组态软件系统。通过对现场数据的采集处理，以动画显示、报警处理、流程控制、报表输出等和多种方式向用户提供解决实际工程问题的开发平台。

由于是国人开发的软件，所以它是全中文的，很适合我们使用，还有它可提供近百种绘图工具和基本图符，快速构造图形界面，此外还提供上千个精美的图库元件及渐进色等多种

动画方式可以快速的构建精美的动画，它还支持温控曲、计划曲线、时实曲线、历史曲线、XY等多种工控曲线。总之使用MCGS软件可以较快速的完成一个运行稳定、功能成熟、维护量小并且具备专业水准的计算机监控控制系统的开发工作。下面我来介绍在使用MCGS组态软件来完成任务的详细过程及遇到的问题和解决的办法。

任务一 水泵运行控制

打开MCGS通用版组态软件，我们会看见5个部分，分别为主控窗口、设备窗口、用户窗口、实时数据库和运行策略。

首先我们先新建一个工程，将其命名为水泵控制系统并进行保存。

然后打开用户窗口完成相关图符的建立，老师在建工程时先建立了实时数据库，是因为对图符的控制属性有较清楚的认识，所以对于初学者来说，先画图符是0先的选择。

（1）在用户窗口中新建一个窗口0，并将其重命名水泵运行控制，在动画窗口中用标签建立动画的标题“水泵控制”

（2）绘制水泵

在软件中，已经为我们提供了“对象原件库”我们可以在其中选择所要的原件，所以接下来添加一个“泵30”图符再确定，可以调节图符的大小，以至达到美观的效果

（3）在泵下面添加两个“按钮”分别将名称改为“启动”和“停止”也可以双击来改变按钮的背景颜色。

（4）因为要展示停止和启动时的状态所以再添加两个指示灯，为了更为清楚的展现启动和停止的状态，也可以自己改造一个指示灯，其改造方法为先用一个库提供的指示灯作为改造对象先分解单元在将0前面的图符拖走，将底层的图符分解图符再改变其颜色和添加一个“可见度”属性并在表达式里填入@开关量，然后再对另一只指示灯做相关属性的设置。

（5）为了显示时间我们再添加两个按钮分别为“定时器启动”和“定时器复位”再添加 两个标签分别为控制“计时时间”和“时间到”。

（6)添加四个输入框将其属性设置为数值型，

（7）现在我们来进行实时数据库里相关数据的添加，分别为 水泵、启动、复位、定时器启动、定时器复位都是开关量，而“计时时间”和“时间到”为数值型。

(8)实时数据建立完成后，再进行用户窗口里图符的相关表达式的关联，由于要有时间控制所以在运行策略里我们要添加一个定时器，和一个脚本程序，在定时器属性里设置时间值为35秒，在脚本程序里用IF-THEN语句来编写控制程序。记住要用EXIT来划分步骤，在0后要进入运行环境测试前，应调节循环策略的属性，将定时循环时间改为200s。

任务二 水泵运行监控

前期仅是利用MCGS系统的“设备无关性”在水泵控制组态工程中借助定时器和脚本策略，初步实现了水泵控制系统的模拟运行，并未达到实时监控的目的，所以接下来要监控设置。

我们知道，水泵运行控制主要是使用PLC来控制的，而MCGS系统，一方面需要从PLC采集相关数据，改变实时数据库中对应变量的值，然后以画面中图符构件的动画形式显示出来，从而达到监视运行的目的；另一方面还需要将上位机组态环境中设置的暂停和运行时间写入PLC中，实现对水泵运行时间到调整，以及通过上位机启动和停止按钮实现对水泵硬件系统的运行和停止的控制。

打开前一个“任务一”将其另存为“水泵运行监控”在将“任务一”组态工程动画及属性设置进行改进。

（1）删除定时器策略及脚本程序策略。【在联机时，PLC完成控制任务，所以组态工程

中的定时器和脚本程序就无用了】

（2）修改数据库中与定时器相关的4个数据对象，分别为“定时器启动”“定时器复位”计时时间和时间到，以提高运行环境效率。然后在添加4个新的数据对象，分别为“运行时间显示”、“运行时间调整”、“暂停时间显示”和“暂停时间调整”，对象类型为数值型。

（3）在“动画组态水泵控制”窗口中删除与定时器相关的图符，并且制作6个新的文字标签。

（4）制作如图的动画窗口。

在设备窗口中添加一个“通用串口父设备”再添加一个“西门子_S7200PPI”。

（5）选择好后就对设备进行属性设置，以便与MCGS进行通信。

（6）在通用串口属性设置”串口端子号为“COM1”数据校验方式为“偶校验”采集数据为“同步采集”。0小采集周期设为200ms.【依据所接PLC型号进行设定】

（7）设置西门子PPI属性，添加4个i寄存器、2个Q寄存器、3个M寄存器和4个VW寄存器。

（8）在图纸上先画出PLC程序，注意为了较为正确的控制组态，所以在程序设计过程中要进行数据转换。加入转移指令和整数除法指令，将计时器时间除以10放到寄存器中。还要添加“上位机启动”和“上位机停止”。

（9）在联机监控操作时，打开MCGS时需要关闭Step7软件，然后进行通连道接，直到显示为0是就表示连接成功了，便可进行监控测试。

任务三机械手控制系统1： Touch screen parameters. Check the parameter settings of the touch screen



There are several parameters that need special attention:



1: The setting of communication port -- be sure to confirm whether the COM1 port or com2 port connecting the PLC to the touch screen



2: Device type - - this is the most important. If the protocol is not selected correctly, it goes without saying anything else



3: Connection mode - the connection between PLC and touch screen, confirm whether it is RS485 or RS232C



4: Interface parameters and PLC station number must be consistent with the settings in PLC.





2： If the parameters are confirmed and set, then check the line



Confirm whether the wiring of RS485 and RS232C is correct, and the wiring method of touch screen is different from that of various PLC. This can be checked by referring to the maintenance control (help document of communication line connection between PLC and touch screen). This is the basic method for normal troubleshooting of communication problems.





Next, I will teach you how to bypass the problem of touch screen - online simulation. When communication is not available, some customers will guess that it may be the problem of the touch screen or the interface. Online simulation is to bypass the touch screen and connect directly with the computer with PLC.

Specific measures:

In this way, it is obvious to check whether PLC can communicate with PC. If you can communicate, you can eliminate the problems of PLC and parameter setting.



In just a few decades, computer science and technology have made breakthroughs, and are widely used in many industries. At the same time, in the process of industry development, the application effect and quality of computer science and technology are also regarded as an important measurement index. In the field of education, computer science and technology, as an effective teaching resource, help to improve the quality of teaching and the efficiency of teaching management. The application of computer science and technology in classroom teaching helps to improve students' learning enthusiasm and lay a good foundation for cultivating new talents in the era of "Internet +". In the process of social development, the development of computer science and technology has a very significant influence. Science and technology is the primary productive force of social development, and has a very significant application value to improve people's living standards. In the era of rapid development of information technology, all walks of life have made rational use of computer science and technology, especially in the field of education. The application of computer science and technology has a very significant effect. However, as far as junior middle school teaching is concerned at this stage, teachers have failed to make reasonable use of computer science and technology to carry out teaching work.



1、 Problems in the application of computer science and technology modernization in junior middle school



（1） Lack of modern application awareness of computer science and technology in the context of the rapid development of information technology, there is an inseparable link between people's life and computer science and technology. The application of computer technology in junior high school teaching is an inevitable trend of future development. However, in terms of the actual situation of junior middle school teaching at present, the school lacks attention to the modern application of computer science and technology. Computers are only set up one course a week, and computers are a subject with strong applicability. The curriculum setting of the school cannot meet the learning needs of students for practical operation, resulting in students' learning of computer science and technology is still limited to theoretical knowledge. Secondly, most parents pay more attention to students' academic performance, ignoring the importance of students' learning computer science and technology [1].



（2） Computer science and technology lack universality in teaching and management



In the process of junior middle school teaching, modern teaching and management must rely on computers, but in actual teaching, most junior middle school teachers still use the traditional teaching mode, unable to reasonably apply computer resources and teaching methods in the teaching process, resulting in dry and boring classroom teaching content, students can not actively participate in classroom learning, and computer science and technology can not be properly applied in teaching management.



2、 Modern application strategy of computer science and technology in junior middle school



（1） Establish a modern teaching management system



Through the use of computer science and technology to establish a teaching management system, so as to improve the efficiency of school management of students. For example, schools can use computer technology to establish student files, including students' basic personal information, interests and hobbies, which is of great significance for teachers to implement targeted teaching in teaching work, and help to improve the quality of student management. Secondly, by using computer technology to establish a curriculum evaluation system, students can use the network to comment on Teachers' classroom teaching work after learning, which helps schools set up courses more reasonably. Finally, improve the quality of management teachers [2]. In the actual teaching process, teachers can use computer science and technology to hold meetings, which reduces unnecessary waste of time and helps to improve the accuracy of teacher performance appraisal.



（2） Improve the quality of modern teaching mode



First of all, through the application of computer science and technology in junior high school teaching, we can change the traditional teaching mode and improve the quality of modern teaching. In the teaching process of junior middle school, under the traditional teaching mode, the limited teaching time can not ensure that students have a better grasp of the difficulties and key points of knowledge. Through the teaching of computer science and technology, students can do a good job of pre class preview before learning new knowledge. At the same time, teachers can also clarify the students' knowledge preview and grasp, which is conducive to the implementation of targeted teaching for students in classroom teaching, So as to improve students' grades. Secondly, teachers use computer science and technology in the teaching process to turn the boring theoretical knowledge of various disciplines into vivid situations, so that knowledge can form a picture in students' minds and improve students' interest in learning knowledge. Finally, the use of computer science and technology in teaching can improve students' autonomous learning ability and help students form a thinking mode of independent thinking [3].



3、 Conclusion



In junior middle school teaching, the application of computer science and technology is the inevitable demand of the development of the times. In classroom teaching, through the modern application of computer science and technology, students are encouraged to actively share subject knowledge in life and provide a platform for students to exchange and discuss, which is of certain positive significance to cultivate students' innovative thinking and autonomous learning ability, and is conducive to improving teaching efficiency. What does e stand for in part number 489-p5-hi-a20-e of Ge generator management relay? Part number 489-p5-hi-a20-e e e in Ge generator management relay stands for enhanced display, whose LCD is larger than the basic display.

How to change the range of values? Press the help button, which will display sensitive content about the setpoint. The range of values and how to change the set value are in the help message.

489-p5-hi-a20-e how does the Ge generator management relay display power generation? On the generator management relay with part number 489-p5-hi-a20-e, the power generated is positive watts. By convention, induction generators usually require reactive power to form an excitation system.

489 what is the function of generator management relay? 489 Ge generator management relay manages the synchronization and induction of generators. It is a microprocessor-based relay designed to protect and manage generators.

Microprocessor based or solid state relays are often used to provide a variety of settings and curve options.

Dielectric withstand voltage refers to en60255-5.

Impulse voltage resistance refers to en60255-5.

The insulation resistance is the reference standard en60255-5.

Damping oscillation refers to iec61000-4-18 / iec60255-22-1.

Electrostatic discharge refers to the standard en61000-4-2/iec60255-22-2.

RF immunity refers to the standard en61000-4-3/iec60255-22-3.

Fast transient interference refers to the standard en61000-4-4 / iec60255-22-4.

Surge immunity refers to the standard en61000-4-5/iec60255-22-5.

Conducted RF immunity refers to the standard en61000-4-6 / iec60255-22-6.

Radiation and conducted emissions refer to the standard cispr11/cispr22/iec60255-25.

Sinusoidal vibration refers to iec60255-21-1.

The magnetic immunity of power supply is the reference standard iec61000-4-8.

Voltage dips and interruptions refer to iec61000-4-11.

Entrance protection refers to IEC60529.

Environmental protection (cold) is the reference standard iec60068-2-1.

Environmental protection (dry heat) refers to iec60068-2-2.

The relative humidity cycle is the reference standard iec60068-2-30.

EFT is the reference standard ieee/ansi c37.90.1.

Damped oscillation is the reference standard ieee/ansi c37.90.1.

ESD is the reference standard ieee/ansic37.90.3.

Safety refers to standards ul508, UL c22.2-14 and ul1053.

The relative humidity cycle is the reference standard iec60068-2-30.

EFT is the reference standard ieee/ansi c37.90.1.

Damped oscillation is the reference standard ieee/ansi c37.90.1.

ESD is the reference standard ieee/ansic37.90.3.

Safety refers to standards ul508, UL c22.2-14 and ul1053.

The relative humidity cycle is the reference standard iec60068-2-30.

EFT is the reference standard ieee/ansi c37.90.1.

Damped oscillation is the reference standard ieee/ansi c37.90.1.

ESD is the reference standard ieee/ansic37.90.3.

Safety refers to standards ul508, UL c22.2-14 and ul1053. 1、 Examples

There is a customer service work order system, which will obtain the emails received from the customer service mailbox from the mail server, and actively generate work orders from these emails and actively allocate them to the corresponding customer service group. Each time the customer service staff selects a work order from the work order list for processing, a work order processing record will occur each time, until the work order is closed and interrupted by customer service.

The system has been running for one year, during which a total of 10 million work orders and 50 million work order processing records have occurred. Because all work orders and processing records are stored in one database, customer service will be slow every time when viewing the work order list, but customer service can tolerate it. Until one day, the company chose to include other types of customer service emails in the customer service work order system, which presented a big problem. The number of work orders increased sharply, resulting in the slower and slower opening of the work order list, and even the collapse of the customer service work order system.

After receiving the response, the developer analyzed it as follows:



The daily increase in the number of work orders is 3 times that of the original;

The total number of work orders has exceeded 30million;

The record of work order processing has exceeded 100 million.

According to the above analysis, it is not difficult to see that it is caused by the excessive amount of data, so developers have carried out the most common operations: optimizing the library structure, optimizing the system code, adding indexes and so on. Although the system is no longer collapsing, the query of work order list is still very slow. After internal comments of the development team, the following two plans are drawn up:



Database partition

Hot and cold data separation

Now let's take a look at the ideas, advantages and disadvantages of these two plans.



2、 Database partition

2.1 what is zoning

Partitioning is not to present a new data table, but to allocate and store the data in the table to different locations (hard disk, system and even server) according to certain rules without creating a new table.



Tip: because this topic clarifies the common sense of architecture, it will not involve the clarification of a certain skill or a certain language in most cases.



Database partitioning has the following four benefits:



Partitions can store more data, because the data in the table are stored in different hard disks, systems or servers;

With the increase of data, new partitions can be added at any time to store data;

When sorting data, the partition can be deleted directly;

The query speed is optimized. Each time we query data, we don't need to query all the data, but only need to query specific partitions. For example, the data table is partitioned according to the date, and each year and month is a partition. Then when we query the data of a certain year and month, You only need the data of one partition (of course, the query here may not be cautious. Here is just an example. Don't worry, I will introduce the query processing in the following article).

So how to partition? Let's take the customer service work order system as an example to illustrate.

With the emergence of Megacities



More environmentally friendly electrical solutions



Become the common pursuit of the global electrical industry



It will play a decisive role in low-carbon development. In the past, medium voltage gas insulated electrical equipment usually used SF6 as the insulating gas. SF6 has good insulation performance to meet users' needs for reliability and stability, but it is also a powerful greenhouse gas. The GWP value in 100 years can reach 23900, and its impact time in the atmosphere will be more than 3000 years.





Through years of joint research by ABB and 3M, we have developed a sustainable SF6 alternative gas: Airplus ™， This is ABB's breakthrough innovation, a first mixed gas, which can reduce the greenhouse effect potential by nearly 100%. This green and sustainable SF6 alternative gas is used in ecogis, an environmental friendly gas insulated switchgear ™ Can be used in. AirPlus ™ By about 85% dry air and 15% 3M novec ™ The composition of 5110 insulating gas, GWP (global warming potential value) is less than 1, compared with SF6 gas, the decrease is more than 99.99%, which greatly improves the climate friendliness of medium voltage switchgear.





Taking a typical station with 20 sets of 40.5kV switchgear as an example, after adopting the above environmental gas scheme, a total of 2550 tons of CO2 can be reduced in its full life cycle, which is equivalent to the total amount of CO2 absorbed by about 140000 pine trees in one year.