3. Timer Design Examples 3.3 Delay ON/OFF Program Control Purpose: z Enabling the indicator to be ON after a 5 sec delay and OFF after a 3 sec delay by the switch 3s X1 Y1 5s Devices: Control Program: Delay ON for 5 sec Delay OFF for 3 sec Program Description: z When X1 = ON, T0 will start counting for 5 sec. When T0 reaches its set value, the NO contact T0 will be ON while NC contact T1 will remain OFF, which makes the indicator Y1 to be ON and latched. z When X1 = OFF, T1 will start counting for 3 sec. When T1 reaches its set value, the NC contact T1 will be activated while the NO contact T0 will remain OFF, which makes the indicator Y1 to be OFF.
DVP-PLC Application Examples 3-3 Device Function X1 X1 = ON when the switch is turned on. T0 5 sec timer, time base = 100ms T1 3 sec timer, time base = 100ms Y1 Output indicator TMR T0 K50 X1 TMR T1 K30 T0 T1 Y1 Y1 TMR T0 K50 TMR T1 K30