6SE6420-2UD17-5AA1

高可靠性是电气控制设备的关键性能。PLC由于采用现代大规模集成电路技术，采用严格的生产工艺制造，内部电路采取了先进的抗干扰技术，具有很高的可靠性。使用PLC构成控制系统，和同等规模的继电接触器系统相比，电气接线及开关接点已减少到数百甚至数千分之一，故障也就大大降低。此外，PLC带有硬件故障自我检测功能，出现故障时可及时发出警报信息。在应用软件中，应用者还可以编入外围器件的故障自诊断程序，使系统中除PLC以外的电路及设备也获得故障自诊断保护。这样，整个系统将极高的可靠性。

福州卓凯电子科技有限公司联系人：小林      
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SIEMENS 6ES7 315-2AF03-0AB0, SIMATIC S7 CPU315-2 DP as photos, sn:7281, pro 2

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SIEMENS 6ES7 321-1BH01-0AA0, SIMATIC S7 DI 16xDC24V as photos, sn:1240, Pro 1

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Siemens 6ES7 321-1BH02-0AA0, Digital Input Module as photo, Sn:0714.

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SIEMENS 6ES7 321-1BL00-0AA0, SIMATIC S7 as photo, sn:5739.

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Siemens 6ES7 368-3BC51-0AA0, Connecting cable as photo, sn:4344.

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SIEMENS 6ES7 416-2XK02-0AB0, Processor Module as photo,sn:5041,For part not work

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SIEMENS 6ES7 972-0BA20-0XA0, Simatic S7 Profibus connector as photo, Type I

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Siemens 6GK1500-0EA02, Busconnector connector as photo, sn:xx

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Siemens A5E00100846, Power Supply as photo, sn:6131,for Sinumerik Simatic PCU 50

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