WOODWARD 9907-164 伺服控制器

WOODWARD 9907-164   伺服控制器

WOODWARD 9907-164   伺服控制器

工业控制实现自动化与PLC的加入有非常大的关系，PLC在工业生产线中主要功能为：开环控制、模拟量闭环、数字量控制等，这在很多场景下可以取代传统的继电接触器控制系统，让工业控制系统实现自动化生产。此外，PLC除了控制外，还可以实现采集现场数据的功能，并且可以对数据进行统计和记录。

由于PLC大多数都使用了单片微型计算机，所以集成度非常高，这也增加了系统的可靠性。PLC的优势在于输入和输出功能模块兼具，可以针对现场不同的信号，采用与之匹配的模板与对应的设备相连接并采取控制。除此之外，PLC还具备变成容易、组态灵活、安装方便、运行速度快。

当前在PLC领域中，企业基本上都属于欧美日三个地区。欧洲以西门子、施耐德为主，美国市场以罗克韦尔、通用为主，而日本市场则以欧姆龙、三菱和松下。而国产品牌在PLC方面近些年也发展迅速，和利时、信捷电气、南大傲拓、汇川技术、英威腾等自主品牌也在致力研发PLC，不过仍是以中小型PLC为主，大型的PLC系统仍被国际品牌占据，国内自主品牌仍有很大的进步空间。

WOODWARD 9907-164   伺服控制器

工业公司应确保自身网络设计良好，有着防护周全的边界。企业应按ISA IEC 62443标准划分自身网络，保护所有无线应用，部署能快速排除故障的安全远程访问解决方案。公司网络，包括其工业网络基础设施设备，都应列入监视对象范围。运营技术(OT)团队可能会觉得公司的终端受到边界防火墙、专利安防软件、专业协议和物理隔离的防护，可以抵御数字攻击。但事实不是这样的，雇员、承包商和供应链员工将他们的笔记本电脑或U盘带入企业网络时，这些安全防护措施就被绕过了。必须确保所有终端都是安全的，要防止员工将自己的设备接入公司网络。事实上，黑客可以侵入OT环境中基于PC的终端。公司企业还应保护其IT终端不受OT环境中横向移动的数字攻击侵袭。

WOODWARD 9907-164   伺服控制器

The automation of industrial control has a great relationship with the addition of PLC. The main functions of PLC in industrial production line are: open-loop control, analog closed-loop control, digital control, etc. This can replace the traditional relay contactor control system in many scenarios and make the industrial control system realize automatic production. In addition, PLC can not only control, but also realize the function of collecting field data, and can count and record the data.

Because most PLCs use single-chip microcomputers, the integration is very high, which also increases the reliability of the system. The advantage of PLC is that it has both input and output function modules, and it can connect with the corresponding equipment and take control according to different signals in the field by matching templates. In addition, PLC also has the advantages of easy conversion, flexible configuration, convenient installation and fast operation.

WOODWARD 9907-164   伺服控制器

At present, in the field of PLC, enterprises basically belong to Europe, America and Japan. Europe is dominated by Siemens and Schneider, while the American market is dominated by Rockwell and General Motors, while the Japanese market is dominated by Omron, Mitsubishi and Panasonic. Domestic brands have also developed rapidly in PLC in recent years, and independent brands such as Hollysys, Xinjie Electric, Nantah Alto, Huichuan Technology and Invigorate are also working hard to develop PLC, but they are still mainly small and medium-sized PLCs, and large-scale PLC systems are still occupied by international brands, so there is still much room for improvement for domestic independent brands.

Industrial companies should ensure that their networks are well designed and have well-protected borders. Enterprises should divide their own networks according to ISA IEC 62443 standard, protect all wireless applications, and deploy secure remote access solutions that can quickly troubleshoot. The company network, including its industrial network infrastructure equipment, should be included in the scope of monitoring. Operational Technology (OT) teams may feel that the company's terminals are protected by border firewalls, proprietary security software, professional protocols and physical isolation, and can resist digital attacks. But this is not the case. When employees, contractors and supply chain employees bring their laptops or USB flash drives into the enterprise network, these security measures are bypassed. All terminals must be secure, and employees should be prevented from connecting their devices to the company network. In fact, hackers can invade PC-based terminals in the OT environment. Companies should also protect their IT terminals from digital attacks that move horizontally in the OT environment.