RELANCE 800756-21B 频率模块
0-57C407-4H分散控制系统支持现场总线应用，能够从变送器、执行机构、电气保护装置等智能控制装置用数字通信方式获得过程数据和诊断信息，以提高信号传输精度和速度，降低投资，提高现场设备的智能化和信息化水平。
0-57C407-4H具有基于工业以太网的多种现场总线冗余解决方案，将能够支持Hart、Profibus、FF、Can等多种现场总线的高可靠性混合应用。
0-57C407-4H 组态灵活。相较于PLC，DCS是更为庞大复杂的体系。DCS经四代技术变革，核心始终是借助于先进的计算机技术、通讯技术和控制技术等不断优化，以实现分散控制、集中操作、分级管理、配置灵活和组态方便等。如0-57C407-4H，简化了系统下载过程，并支持同一 OS 项目的工艺流程图多用户组态。新版的0-57C407-4H组态更为灵活，可并行组态，最大程度缩减工程时间成本。
0-57C407-4H支持IEC标准的顺序功能模块（SFC）的组态方式，能够以自然语言的方式描述复杂的顺序控制过程。
在传统DCS中，一般以顺控功能块的方式提供顺控的组态手段，这种组态手段对于没有控制分支的顺控程序是可能满足要求的。当分支增加、步序变多，功能块组态方式的程序量会呈现几何级的增长，也就限制了顺序控制的设计和实现水平。这也是很多DCS不能很好地实现主机自启停功能和辅助车间顺序控制的部分原因。
0-57C407-4H支持的SFC组态方式，适用于描述复杂的顺序控制逻辑，程序结构直观易于理解，当设计复杂度提高时，SFC的程序量仅呈现线性增加。采用了SFC的技术，0-57C407-4H的控制水平和适用范围会得到进一步提高和扩大。
Flexible configuration. Compared to PLC, DCS is a larger and more complex system. Through four generations of technological transformation, DCS has always relied on advanced computer technology, communication technology, and control technology to continuously optimize and achieve decentralized control, centralized operation, hierarchical management, flexible configuration, and convenient configuration. Like Siemens SIMATIC PCS 7 V8.1, it simplifies the system download process and supports multi-user configuration of process flowcharts for the same OS project. The new SIMATIC PCS 7 V8.1 configuration is more flexible and can be configured in parallel, minimizing engineering time and costs.
The SFC configuration supported by NT6000 is suitable for describing complex sequential control logic. The program structure is intuitive and easy to understand. As the design complexity increases, the program quantity of SFC only shows a linear increase. By adopting SFC technology, the control level and applicability of NT6000 will be further improved and expanded.
The 0-57C407-4Hdistributed control system supports fieldbus applications and can obtain process data and diagnostic information through digital communication from intelligent control devices such as transmitters, actuators, and electrical protection devices, in order to improve signal transmission accuracy and speed, reduce investment, and enhance the intelligence and informatization level of on-site equipment.
0-57C407-4Hhas multiple redundant fieldbus solutions based on industrial Ethernet, which will be able to support high reliability hybrid applications of various fieldbuses such as Hart, Profibus, FF, Can, etc.
The 0-57C407-4Hof NT6000 has powerful computing power, rich module support, and flexible secondary development capabilities, providing powerful tools and a broad stage for engineering.
The 0-57C407-4Hsupports the configuration of sequential functional modules (SFC) according to the IEC standard, which can describe complex sequential control processes in natural language.
In traditional DCS, configuration methods for sequential control are generally provided in the form of sequential control function blocks, which may meet the requirements for sequential control programs without control branches. When the number of branches increases and the number of steps increases, the program size of the functional block configuration method will show a geometric increase, which limits the design and implementation level of sequential control. This is also part of the reason why many DCS cannot effectively achieve the host's self start stop function and auxiliary workshop sequence control.