自动操作给电流到Enable并且不给电流到Manual时PID函数执行。PID块将当前的CPU逝去时间与存储在内部变量数列的时间相比较。如果差值大于第三个字(%Ref+2)内存储的采样时间值，PID进行运算。将上一-次运行时间和CV输出更新。
FOXBORO P0913ED USPP P0913ED
DAEDAL MD23-03-202002 USPP MD2303202002
YASKAWA ELECTRIC DDSCRGL60S0V USPP DDSCRGL60S0V
EMERSON DXM-208CB-090 USPP DXM208CB090
SENTROL 532-093-027 USPP 532093027
GE FANUC IC3600AFRB1 USPP IC3600AFRB1
KOLLMORGEN SEIDEL 60WKS-M240/3-PO USPP 60WKSM2403PO
GE FANUC IC600YR560 NSFP IC600YR560
EATON CORPORATION 92-00804-02 USPP 920080402
INDRAMAT KDA-3.2-100-3D0?0-W1 USPP KDA321003D00W1
GE FANUC IC600BF814 NSFP IC600BF814
ALLEN BRADLEY 1336VT-B005-EON USPP 1336VTB005EON
ALLEN BRADLEY 1771-ACN USPP 1771ACN
ALLEN BRADLEY 900337-01 USPP 90033701
SIEMENS 6AV3-515-1MA20 USPP 6AV35151MA20
ALLEN BRADLEY 1756-EN2T NSPP 1756EN2T
RELIANCE ELECTRIC 0-54374 NSFP 054374
SYMAX 8030-RIM-126 USPP 8030RIM126
