描述
由于电磁干扰的复杂性，要根本消除迎接干扰影响是不可能的，因此在PLC控制系统的软件设计和组态时，还应在软件方面进行抗干扰处理，进一步提高系统的可靠性。常用的一些措施：数字滤波和工频整形采样，可有效消除周期性干扰；定时校正参考点电位，并采用动态零点，可有效防止电位漂移；采用信息冗余技术，设计相应的软件标志位；采用间接跳转，设置软件陷阱等提高软件结构可靠性。
NetApp X243B 72GB 10K Disk for F87
NetApp X221D 18GB 10K ZCS Disk for FC8/FC9
NetApp F740 Filer Head Unit
5 Year Next Business Day Warranty on All NetApp
NetApp X226 72GB 10K ZCS Disk for FC9 Network Appliance
NetApp X2054A QLE2464-NAP 4Gb 4-Port PCI-E QLOGIC *TESD
One-day shipping available
NetApp Network Appliance R150 Base
NETAPP X1049A-R6 106-00200 PCI-E QUAD-PORT 10/100/1000
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Netapp X2054A-R6 111-00285 4gpbs 4-Port FC HBA
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NetApp F820 Filer Head Unit w/ Gigabit Fibre Channel
