2711P-K15C15A6
2711P-K15C15A6
2711P-K15C15A6
相应的功能要求
一般小型(低档)PLC具有逻辑运算、定时、计数等功能,
对于只需要开关量控制的设备都可满足。
对于以开关量控制为主,带少量模拟量控制的系统,可选用能带A/D和D/A转换单元,具有加减算术运算、数据传送功能的增强型低档PLC。对于控制较复杂,要求实现PID运算 、
闭环控制、通信联网等功能,可视控制规模大小及复杂程度,选用中档或高档PLC。
但是中、高档PLC价格较贵,一般用于大规模过程控制和集散控制系统等场合。
响应速度要求
PLC是为工业自动化设计的通用控制器,不同档次PLC的响应速度一般都能满足其应用范围内的需要。如果要跨范围使用PLC,或者某些功能或信号有特殊的速度要求时,则应该慎重考虑PLC的响应速度,可选用具有高速I/O处理功能的PLC,或选用具有快速响应模块和中断输入模块的PLC等。
CUTLER HAMMER D120-PM32 USPP D120PM32
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CUTLER-HAMMER CH32L150D 1 Phase Loadcenter 150AMP, MAIN LUG; V
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