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1)  S7 API
S7API
1.
Achieving the Communication Between IPC and PLC Using S7 API;
针对工业自动化系统中,实现控制系统与工业控制计算机之间的数据通讯,存在的数据的更新周期长(一般在500ms以上),不能满足工业控制中的特殊应用,即数据量大且要求的数据采样周期短的问题,结合工程实践经验,描述如何使用S7API实现西门子S7系列控制系统与计算机之间的高速大数据量通讯。
2)  S7-300 PLC
S7-300PLC
1.
Application of S7-300 PLC on Automated Packaging Machine
S7-300PLC在全自动包装机中的应用
2.
The computer supervision and control system was built by high reliability and real-time S7-300 PLC, industrial configuration software iFIX and industrial control computer IPC, which ensure that the system is running stable and real-time.
该工艺采用蒸发、常压精馏、变压共沸精馏等方法,有效解决合成乙腈精制工艺中存在的产品纯度低和产品收率低等难题,计算机监控系统采用高可靠性和实时性的S7-300PLC、工业组态软件iFIX和工业控制计算机IPC加以构建,确保系统稳定、实时运行。
3.
In light of the primary grinding circuit of a concentrator,a fuzzy control system for grinding mill feed quantity based on S7-300 PLC and Wincc was designed.
针对某选矿厂一段磨矿回路,设计了一种基于S7-300PLC和WinCC的磨机给矿量模糊控制系统。
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3)  S7-200 PLC
S7-200PLC
1.
The network communication and application of S7-200 PLC;
S7-200PLC的网络通信及应用
2.
Communication Design for Controlling System of Paper Machine Based on S7-200 PLC;
基于S7-200PLC的纸机控制系统通讯设计
3.
CONCEPT OF POSITION CONTROL BY STEP MOTOR USING HIGH-SPEED OUTLETS OF S7-200 PLC;
用S7-200PLC的高速输出口实现步进电机位置控制的设想
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4)  S7-400 PLC
S7-400PLC
1.
According to the characteristics of glass coating process,Siemens S7-400 PLC based control system is designed to with the rapid control responses and high control precision with the system structure and hardware configuration,the control strategies of the subsystems of vacuum pump,power source of magnetic sputtering cathode and servo motor are introduced.
针对镀膜工程玻璃生产线工艺复杂,结构庞大,控制参数众多,镀膜过程控制要求响应快、精度高的特点,设计了以西门子S7-400PLC为核心的生产过程控制系统,结合系统结构与硬件配置方案;详细阐述了真空泵、磁控溅射靶阴极电源和玻璃传送伺服电机等子系统的控制策略和特点。
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5)  Steel S7
S7钢
1.
Influence of heat treatment on microstructure and hardness of steel S7;
热处理对S7钢组织和硬度的影响
2.
Effect of Heat Treatment on Structure and Properties of Tool Steel S7;
热处理工艺研究结果表明 ,S7钢 (0 。
6)  S7 steel
S7钢
1.
Investigation of CCT diagram of S7 steel;
S7钢CCT图的测定及研究
2.
The TTT diagram and the CCT diagram on annealing of S7 steel were determined by means of full automatic transformation testing instrument (Formastor\|Digital).
利用Formastor Digital全自动相变测量仪 ,测定了S7钢退火用CCT曲线和TTT曲线。
3.
The TTT diagram of S7 steel was investigated by means of full -automatic transformation testing instrument (Formastor -Digital) and the influence of alloying element and austenitizing temperature on TTT diagram was studied.
利用Formastor—Digital全自动相变测量仪,测定了S7钢退火用的TTT曲线,研究了合金元素、奥氏体化温度对TTT曲线的影响,为S7钢的软化退火提供了依据。
补充资料：API gravity
分子式：
分子量：
CAS号：

性质：美国石油 学会（American Petroleum Institute简称API）制订的一种量度，用以表示原油及石油产品密度。API度愈大，相对密度愈小，即原油愈轻，价格愈高。其值以下式计算：API度（15.6℃）=141.5/相对密度（15.6℃）-131.5

说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条