3 . Timer Design Examples 3.2 Delay ON Program Control Purpose: z Enabling the indicator to be ON after a 3 sec delay and OFF immediately by the switch X1 3s T0 Devices: Y1 Control Program: X1 Delay ON for 3 sec T1 Y1 Program Description: z When X1 = ON, TMR instruction will be executed. Timer T1 will be ON and start counting for 3 sec. When T1 reaches its set value, the NO (Normally Open) contact T1 will be activated and indicator YI will be ON. z When X1 = OFF, TMR instruction will not be executed. Timer T1 will be OFF and so will NO contact T1. Therefore, the indicator Y1 will be OFF.
DVP-PLC Application Examples 3-2 Device Function X1 X1 = ON when the switch is turned on T1 3 sec timer, time base = 100ms Y1 Output indicator TMR T1 K30