Key operations in the control lifecycle are wrapped by a pair of events, one firing before the operation takes place and one firing immediately after the operation has completed.
控件生命周期中的关键操作被包装在一对事件中，一个在操作发生前触发，另一个在操作完成后立即触发。
2
Two complete front-panel settings (parameter selection and the sweep control) can be stored in a non-volatile memory and recalled at any time with a single keyoperation.
Directly from the PLC PID operation to the temperature controller, DT3, as the temperature control core, reduce the PLC computation and improve the control effect of heating key process.