PID 功能运算法则选择 (PIDISA 或 PIDIND) 和增益 PID 块可以选用独立(PID_IND)运算规则，或者选用标准 ISA (PID_ISA)版本 运算规则。二者区别在于如何定义积分和微分增益。 一般这两种 PID 类型下都有 Error= SP ñ PV，你可以将 Error 项(配置字 %Ref+12 的第 0 位)设为 1，

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