屏蔽层：镀锡铜丝高密度编织,屏蔽层覆盖率85%；西门子现场总线|西门子总线电缆6XV1830-0EH10导体:裸铜丝,1*0.64mm导线面积：>0.34mmW线芯颜色:绿色-红色屏蔽层:铝塑带+镀锡铜丝编织护套:PVC3DRX22X02R特性阻抗:150Ω直流电阻:57.5Ω/km工作温度:-30。
一、产品执行标准:企业标准Q/TY二、低烟无卤电缆的说明低烟无卤电缆可分为低烟无卤阻燃系列和低烟无卤耐火系列。低烟无卤电缆是本公司参照法国标准RCCE及NF系列标准、国家标准GB/T18380、GB/T19216、GB/T17651、GB/T17650及****进行生产。
第四的25对是用“白棕”标识线缠着的。第五的25对是用“白灰”标识线缠着的。第六的25对是用“红兰”标识线缠着的。第七的25对是用“红桔”标识线缠着的。第八的25对是用“红绿”标识线缠着的。主要电气性能：1.直流电阻:20℃,0.5mm铜线,小于等于95Ω/km。
This product is suitable for electronic computers with rated voltage of 500V and cables with high requirement of anti-interference. Type K B low density polyethylene with anti-oxidation property is adopted for insulation of cable core. Polyethylene high insulation resistance, good resistance to voltage, small dielectric coefficient and temperature and the influence of variable frequency dielectric loss is small, can not only meet the requirements of transmission performance, and can ensure the service life of the cable. In order to reduce crosstalk and external interference between circuits, the cable adopts shielding structure. The shielding requirements of cables are respectively adopted according to different situations, such as the method of shielding the hinged combination, the method of shielding the hinged combination, and the method of shielding the hinged combination after the hinged combination. Shielding materials are round copper wire, copper belt, aluminum belt/plastic composite belt three. Shielding pair and shielding pair have good insulation performance. If there is potential difference between shielding pair and shielding pair, the signal transmission quality will not be affected.
矿用控制电缆电气性能：1、额定电压450/750v2、电缆导体的长度允许工作温度为70摄氏度3、电缆的敷设温度应不低于0摄氏度，推荐的允许弯曲半径；4、无铠装层的电缆，应不小于电缆外径的6倍5、有铠装或铜带屏蔽结构的电缆，应不小于电缆外径的12倍。
实操过程中同时练习了软件编程和程序上下载、在线修改编辑、在线监控等各项功能。就像“书非借不能读”，花了钱买了硬件，也会促进你的学习欲望，缓解懒惰并发症导致的学业荒废。初学者学习PLC说明一下。1，推荐学习三菱的PLC。三菱的程序是一步一步的。欧美的是一块一块的。当然现在随着融合，好很多了。2，三菱的，西门子的都有仿真软件。下点教程，买两本书看看，编写小程序，感觉一下是否对这个比较热爱。也可以跟别的人，接触过的了解一下。
天津西门子：总线电缆；ProfibusDP电缆.2芯紫色电缆铝箔、金属丝编织双层屏蔽，实心裸铜线导体，2芯并合成对，芯线红绿二色，绿色环保PVC外护套，外观紫色。ProfibusDP电缆采用实心裸铜线导体作芯线，加厚铝箔和加密裸金属丝编织层，屏蔽效果好，紫色PVC外护套。
This product is suitable for the communication bureau (station) and high-rise buildings and other power transmission, distribution systems used in the fire - retardant soft cable.
一、产品简介动力电缆用输配电系统，本公司生产的交流额定电压0.6/1KV聚氯乙烯绝缘动力电缆和35KV及以下交联聚乙烯动力电缆，其性能不仅符合标准GB1276和IEC60502及IEC60840，并且已形成系列，即阻燃型的、耐火型的、耐寒型的和防水型的动力电缆。
This company produces the type refractory power cables for rated voltage 0.6/1 kv copper core cable, can also produce low smoke zero halogen fire-resistant power cable, high flame retardant fire-resistant power cable oxygen insulation layer, the fire-resistant performance in line with the GB/T12666.6 cable fire resistance test method. Therefore, the overall performance of refractory series power cables is good and reliable. The water resistance performance of fireproof cable conforms to iec 502-2.
铠装双绞屏蔽型电缆ASTP-120Ω（forRS485&CAN）onepair18AWG，电缆外径12.3mm左右。可用于干扰严重、鼠害频繁以及有防雷、防爆要求的场所。使用时，建议铠装层两端接地，最内层屏蔽一端接地。
When used in a dc system, the nominal voltage of the system shall not be greater than 1 of the cable's rated voltage. 5 times.
从横向纵向拓展性和发展潜力来看，总的来说嵌入式比单片机更具潜力，单片机比嵌入式容易入行。ARM芯片这么个标题我想说什么呢？意思是单片机跟嵌入式是有区别的。这篇文章就是来分析要如何选择，是学嵌入式还是单片机呢？我们朱老师物联网大讲堂推出的课程就有单片机跟嵌入式两个系列课程，有同学会觉得说单片机就是嵌入式，老师为什么要推出两个呢？这两个课程的内容是不一样的。单片机课程主要是讲51单片机跟STM32，51单片机主要是裸机，没有操作系统，有同学说51单片机也可以上操作系统，话虽如此，但一般不需要这样用。
产品型号及名称 ZR-DJYPV计算机电缆：聚乙烯绝缘铜丝编织分屏蔽聚氯乙烯护套阻燃型电子计算机用电缆 ZR-DJYVP计算机电缆：聚乙烯绝缘铜丝编织总屏蔽聚氯乙烯护套阻燃型电子计算机用电缆 ZR-DJYPVP计算机电缆：聚乙烯绝缘铜丝编织分屏蔽、总屏蔽聚氯乙烯护套阻燃型电子计算机用电缆 ZR-D。
Identification and length marking: there is a sexual identification mark on the cable appearance, and the marking interval is not more than 1m.