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The meaning of PID parameters in the Honeywell PKS system: K_ is the proportional gain； T1_ Integration time, in minutes ； T2_ Differentiation time, in minutes ； Method 1: Trial and error based on experience. When tuning the parameters, it is necessary to carefully observe the system’s response, and decide which parameters need to be adjusted based on that response. To observe the system’s response, one can check the real-time trend curves displayed in the details view of the control loop; it is ideal for the attenuation curve to have a ratio of 4:1. Method two: empirical values. During debugging, it is necessary to set an initial empirical value first, and then make adjustments based on the actual performance. A table providing recommended empirical values is available here. During debugging, the system must not experience divergent oscillations; if this occurs, manual control should be switched to immediately. Once the system stabilizes, K should be reduced and T1 increased, after which automatic control can be resumed. General steps for tuning using the trial-and-error method (PID): First, set T2 to 0, and use the PI control procedure to tune K and T1. Then increase K to 110–120% of its original value while decreasing T1. Next, gradually increase T2 from a low value to a higher one, and observe the overshoot curve until a satisfactory result is obtained. Sharing with everyone. . . . . .