GE 10BASE-T
冗余CPU和其它PC系统CPU的比较
下面的特性是不同的:
■I/0和模块中断:包括从离散型输入模块发出的单脉冲触发的中断,各种从模拟量输入
模块发出的报警中断,和VME总线模块发出的中断。声明I/0中断的触发不能存储在冗余CPU内。
■不支持14点中断的模块(IC697MDL671)
■中断功能块(I/O, 时间,模块) :包括中断的逻辑不能存储在CPU里。不支持VME综合机架。
■停止I/O扫描模式:如果试图将PLC设置于停止模式,PLC 会拒绝执行并返回一个错误。
■不能使用#OVR_ PRE %S参考值,冗余CPU不支持此功能。
使用CRE020的CPU操作和其它PAC系统的CPU的不同: 使能错误检测和纠正功能(ECC)。
■运行/锁使能模式:详细的见第四章,操作。
CPU在同步时不能使用用户自定义的错误方式。
■停止到运行模式的转换。细节参见第四章冗余CPU的同步。
支持以下的以太网界面特性:
■冗余的IP地址
■网上监视PLC的数据。支持最多总共16个Web服务器和FTP连接。
■支持最多255个以太网全局数据(EGD)交换组,每个交换组可包含100个变量。
■EGDEGD上传和可选择的EGDEGD交换数据
■上传和下载用户配置参数文件(AUP) ,包括用户定义的内部以太网操作参数。
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