IC800SSD107RS1-CC一：触摸屏的参数。查看一下触摸屏的参数设置这里面有几个参数需要特别注意的：
1：通信口的设置－－－一定要确认清楚PLC连接触摸屏的COM1口还是COM2口2：设备类型－－－这个是0重要的，如果协议没选对的话，其他就不用说了3：连接方式－－－PLC跟触摸屏的连线，确认好事RS485，还是RS232C4：接口参数跟PLC站号－－－一定要跟PLC里面的设置一致。二：如果参数确认设置好了，接下来就排查线路的问题确认RS485,RS232C的做线是否正确，触摸屏与各种PLC接线的做法不一样。这个可以参照维控(plc与触摸屏通信线接法帮助文档）查看，这个是正常排查通信问题的基本方法。接下来教大家如何绕开触摸屏的问题－－－在线模拟。在通讯不上的时候，有的客户会猜测可能是触摸屏的问题，或者接口的问题。在线模拟就是绕开触摸屏，直接用PLC跟电脑进行连接。
具体的做法：                       

这样子做就可以很明显查看PLC能不能跟PC通信上。如果可以通信上就可以排除PLC方面的问题，跟参数设置的问题。

在短短数十年间，计算机科学与技术取得了突破性的进展，并且广泛应用于多个行业之中，同时，在行业发展过程中，也将计算机科学与技术的应用效果与质量作为一项重要衡量指标。在教育领域中，计算机科学与技术作为一种有效的教学资源，有助于提高教学质量以及教学管理效率。在课堂教学中应用计算机科学与技术，有助于提高学生的学习积极性，为培养“互联网+”时代下的新型人才打好基础。在社会的发展过程中，计算机科学技术的发展具有十分显著的影响力，科学技术是社会发展的0一生产力，对提升人们的生活水平具有十分显著的应用价值。处于信息技术高速发展的时代中，各行各业都对计算机科学与技术进行了合理运用，尤其是教育领域计算机科学与技术的应用具有十分显著的效果，但就现阶段的初中教学工作而言，教师未能合理利用计算机科学与技术展开教学工作。

一、初中计算机科学与技术现代化应用中存在的问题

（一）缺乏计算机科学与技术的现代化应用意识在信息化技术快速发展的背景下，人们的生活与计算机科学与技术之间存在密不可分的联系，将计算机技术应用在初中教学工作中是未来发展的必然趋势。但就目前的初中教学实际情况而言，学校对计算机科学技术的现代化运用缺乏重视，计算机一周只设置一节课程，而计算机是具有较强应用性的学科，学校的课程设置无法满足学生进行实践操作的学习需求，导致学生对计算机科学与技术的学习依然局限于理论知识。其次，大部分家长更重视学生的学习成绩，忽视了学生学习计算机科学与技术的重要性[1]。

（二）计算机科学与技术在教学与管理中缺乏普遍性

在初中教学过程中，现代化教学与管理必须以计算机为依托，但在实际教学中，大部分初中教师依然使用传统教学模式，无法在教学过程中合理应用计算机资源与教学手段，导致课堂教学内容枯燥、乏味，学生不能积极主动地投入课堂学习中，并且在教学管理中也未能妥善应用计算机科学与技术。

二、初中计算机科学与技术的现代化应用策略

（一）建立现代化教学管理体系

通过利用计算机科学与技术建立教学管理体系，从而提高学校对学生的管理效率。例如，学校可以利用计算机技术建立学生档案，包括学生的个人基本信息、兴趣爱好等，这对教师在教学工作中实施针对性教学具有重要意义，同时有助于提升学生管理工作的质量。其次，还可以通过利用计算机技术建立课程评价体系，学生在学习结束后可以利用网络对教师的课堂教学工作做出点评，从而有助于学校更合理地设置课程。0后，提高管理教师队伍质量[2]。教师在实际教学过程中可以通过利用计算机科学与技术开会，减少了不必要的时间浪费，有助于提高教师绩效考核的准确度。

（二）提升现代化教学模式质量

首先，通过在初中教学工作中应用计算机科学与技术，能够转变传统教学模式，提高现代化教学的质量。初中教学过程中，在传统的教学模式下，有限的教学时间无法确保学生对知识难点、重点进行更好的把握，而通过计算机科学技术展开教学，学生在学习新知识之前可以做好课前预习工作，同时，教师也可以明确学生的知识预习掌握情况，有助于在课堂教学中为学生实施针对性教学，从而提高学生成绩。其次，教师教学过程中利用计算机科学与技术，将各个学科枯燥乏味的理论知识转变为生动的情境，使知识能够在学生脑海中形成画面，提高学生对知识的学习兴趣。0后，在教学中利用计算机科学与技术，能够提高学生的自主学习能力，有助于学生形成独立思考的思维模式[3]。

三、结语

在初中教学中，应用计算机科学与技术是时代发展的必然需求。在课堂教学中，通过计算机科学与技术的现代化应用，促使学生积极分享生活中的学科知识，为学生提供交流讨论的平台，对培养学生的创新思维以及自主学习能力有一定的积极意义，有助于提高教学效率。GE 发电机管理继电器的部件号 489-P5-HI-A20-E 中的 E 代表什么？ 部件号 489-P5-HI-A20-E GE 发电机管理继电器中的 E 代表增强型显示器，其 LCD 比基本显示器更大。
如何更改值的范围？ 按下帮助按钮，它将显示有关设定点的敏感内容。值的范围以及如何更改设定值在帮助消息中。
489-P5-HI-A20-E GE发电机管理继电器如何显示发电量？ 在部件号为 489-P5-HI-A20-E 的发电机管理继电器上，产生的功率为正瓦特。按照惯例，感应发电机通常需要无功功率，形成励磁系统。
489 发电机管理继电器有什么作用？ 489 GE 发电机管理继电器管理发电机的同步和感应，它是一种基于微处理器的继电器，旨在保护和管理发电机。
基于微处理器或固态继电器通常用于提供多种设置和曲线选项。
介电耐压是参考标准 EN60255-5。
耐冲击电压是参考标准 EN60255-5。
绝缘电阻为参考标准 EN60255-5。
阻尼振荡是参考标准 IEC61000-4-18/IEC60255-22-1。
静电放电是参考标准 EN61000-4-2/IEC60255-22-2。
RF 抗扰度是参考标准 EN61000-4-3/IEC60255-22-3。
快速瞬态干扰是参考标准 EN61000-4-4/IEC60255-22-4。
浪涌抗扰度是参考标准 EN61000-4-5/IEC60255-22-5。
传导射频抗扰度是参考标准 EN61000-4-6/IEC60255-22-6。
辐射和传导发射是参考标准 CISPR11/CISPR22/IEC60255-25。
正弦振动是参考标准 IEC60255-21-1。
电源磁抗扰度为参考标准 IEC61000-4-8。
电压骤降​​和中断是参考标准 IEC61000-4-11。
入口保护是参考标准 IEC60529。
环保（冷）是参考标准IEC60068-2-1。
环保（干热）参考标准IEC60068-2-2。
相对湿度循环是参考标准 IEC60068-2-30。
EFT 是参考标准 IEEE/ANSI C37.90.1。
阻尼振荡是参考标准 IEEE/ANSI C37.90.1。
ESD 是参考标准 IEEE/ANSIC37.90.3。
安全性是参考标准 UL508、UL C22.2-14 和 UL1053。
相对湿度循环是参考标准 IEC60068-2-30。
EFT 是参考标准 IEEE/ANSI C37.90.1。
阻尼振荡是参考标准 IEEE/ANSI C37.90.1。
ESD 是参考标准 IEEE/ANSIC37.90.3。
安全性是参考标准 UL508、UL C22.2-14 和 UL1053。
相对湿度循环是参考标准 IEC60068-2-30。
EFT 是参考标准 IEEE/ANSI C37.90.1。
阻尼振荡是参考标准 IEEE/ANSI C37.90.1。
ESD 是参考标准 IEEE/ANSIC37.90.3。
安全性是参考标准 UL508、UL C22.2-14 和 UL1053。一、事例
有一个客服工单体系，会从邮件服务器中获取客服邮箱收到的邮件，而且将这些邮件主动生成工单并主动分配给相应的客服组，每次客服人员从工单列表中选取一个工单进行处理，每处理一次就会发生一个工单处理记载，直到工单被客服封闭间断。
该体系现已运行了一年，在这一年中一共发生了一千万个工单和五千万条工单处理记载。因为全部工单和处理记载都存储在一个数据库中，因而每次客服查看工单列表时会很慢，可是客服还能忍耐。直到某天，公司选择将其他几种类型的客服邮件也都参加到客服工单体系中，就呈现了很大的问题，工单数量急剧增加，导致工单列表翻开速度越来越慢，乃至构成客服工单体系溃散。
开发人员收到反应后，剖析如下：

工单数量每天的增加量是本来的3倍；
工单总量现已超越3000万；
工单处理记载现已过亿。
依据上面的剖析，不难看出是因为数据量过大构成的，所以开发人员进行了0常见的操作：优化库结构、优化体系代码、加索引等操作。虽然体系不再呈现溃散的状况，可是工单列表的查询依然很慢。经过开发组内部评论，拟定了如下两个计划：

数据库分区
数据冷热别离
下面咱们就来具体看一下这两种计划的思路和优缺点。

二、数据库分区
2.1 什么是分区
分区，并不是呈现新的数据表，而是在不创立新表的状况下，将表中的数据依照必定规矩分配存储到不同的位置（硬盘、体系乃至是服务器中）。

Tip：因为本专题阐明的是架构常识，因而在大部分状况下不会涉及到某项技能、某种言语的阐明。

数据库分区有如下四个利益：

分区能够存储更多的数据，因为表中数据都被存储在的不同的硬盘、体系或服务器中；
跟着数据的增加，能够随时增加新的分区来存储数据；
在整理数据的时分，能够直接删去分区；
优化了查询速度，每次查询数据时咱们不需求查询全部数据，只需求查询特定分区即可，例如数据表依照日期分区，每个年月是一个分区，那么当咱们查询某年某月的数据时，只需求一个分区的数据即可（当然，这儿说的查询或许不谨慎，这儿仅仅举例子算了，不用介怀，关于查询的处理我将在后边的文章中介绍）。
那么该怎样分区呢？下面咱们就以客服工单体系为例来阐明一下。
随着特大城市的出现

更环保的电气解决方案

成为全球电气行业的共同追求

它将在低碳发展中起到举足轻重的作用在过去，中压气体绝缘电气设备通常采用SF6作为绝缘气体，SF6具有良好的绝缘性能，满足用户对可靠、稳定的需求，但它也同时是一种强效温室气体，100年的GWP值可达23900，在大气中的影响时间将长达3000多年。



通过ABB和3M多年的联合研究，我们开发出一种可持续的SF6替代气体：AirPlus™，这是ABB突破性的创新，一种首创的混合气体 ，可将温室效应潜能值降低近100%。这种绿色、可持续的SF6替代气体则在环保型气体绝缘开关设备 ecoGIS™中得以运用。AirPlus™由约85%的干燥空气和15%的3M Novec™ 5110 绝缘气体组成，GWP（全球变暖潜能值）小于1，相比SF6气体，降幅超过 99.99%，大幅提升了中压开关设备的气候友好性。



以一个有20台40.5kV开关设备的典型站为例，采用以上环保气体方案后，在其全生命周期内合计可以实现2550吨CO2的碳减排，这相当于约14万颗松树在1年内吸收的CO2总量。

使用AirPlus™ 环保气体的ecoGIS™设备采用微正压运行可提高安全性并延长正常运行时间，更低的材料应力水平和更低的泄漏或故障风险，意味着开关柜在整个生命周期内都具备高效的性能。顺应“双碳”目标的要求，全球对ecoGIS™ 的需求在不断增长，自2015年以来ecoGIS™ 解决方案已有9000多台成功应用在多个项目上，基于成熟技术所带来的可靠表现令ecoGIS™ 解决方案深受客户信赖。随着各国环保政策升级和相关法律法规出台，无SF6开关柜将成为趋势。为满足客户的个性化需求，ABB在多款开关设备中采用“Eco Ready理念”解决方案，用户可以在开关站建设时使用SF6作为绝缘介质，轻松通过AirPlus™ 进行环保升级。ecoGIS™ 在为经济发展

提供澎湃动力的同时

也为环境带来积极的改变

让您的开关设备变得“更绿色”

让可持续发展成为现实

书写安全、智慧和可持续的电气化未来

ABB一直在行动
2.2 针对客服工单体系的处理计划
在客服工单体系中，咱们有一个工单表，首要的表结构由：工单编号、工单创立日期、工单状况（进行中、无人处理、已封闭）、客服究竟操作时刻、究竟处理人以及究竟处理人地点组组成。针对工单表的查询操作如下：

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.