8 Application Instructions API 100-149 Program Example 2: 1. Timing diagram and program of the control: M0 T0 Y0 4sec Y1 2sec 1 2 3 4 5sec D0=1 D0=k40 D0=k10 M0 T0 2. Control phases: 1) Phase : When M0 = On, due to that we are not sure about there the valve is, set D0 = K-1 to deliberately close the valve (Y0 = Off, Y1 = On) for 5 seconds and make sure the valve is at the position of 0 second before moving on to the next step. 2) Phase : When T0 = On, allow D0 = K40 to start is action. Open the valve (Y0 = On, Y1 = Off) for 4 seconds, moving the valve to the position of 4 seconds. 3) Phase : Change the position of the valve and D0 = K10.
Due to that the previous position was at 4 seconds, 4) Phase : Switch off M0 and the valve will no longer move (Y0 = Off, Y1 = Off). the valve shall be closed (Y0 = Off, Y1 = On) for 3 seconds, moving the valve to the position of 1 second. DVP-PLC Application Manual 8-69 0 TMR T0 K50 MOV k-1 D0 CVM D0 K50 Y0