7 Application Instructions API 50-99 Part of the example program: Application 3 Using auto-tuning on the parameter for the temperature control. Purpose: Using auto-tuning to calculate the most suitable parameters for PID temperature control. Explanation: You may not be familiar with the temperature environment for the first time, so you can use auto-tuning ( S 3 + 4 = K3) for an initial adjustment. After this, PID instruction will become exclusively for temperature control ( S 3 + 4 = K4). In this example, the control environment is an oven. See the example program below.
M1002 M1013 M0 DVP-PLC APPLICATION MANUAL 7-144 M1002 MOV K1000 D40 M0 MOV D0 D1 M1 MOV K0 D5 M3 MOV D40 D30 M2 ADD D30 D31 D32 > D32 K3000 MOV K3000 D32 D32 K255 MOV K255 D32 MOV D32 D1116 M1 PID D1 D1110 D10 D5 PID D1 D1110 D10 D5 MOV K1000 D40 MOV D0 D1 MOV K0 D5 MOV D40 D30 ADD D30 D31 D32 MOV K3000 D32 MOV K0 D32 DIV D32 K11 D32 MOV K255 D32 MOV D32 D1116 MOV K4000 D20 MOV K400 D200 MOV K800 D10 TO K0 K2 K2 K1 FROM K0 K6 D11 K1 MOV K3 D204 RST M0