DVP-ES3 Series Programming Manual 10 sec X0.0 T0 (PV) SV: K100 _2 B. Accumulative timers When the TMR instruction is executed, the accumulative timer begins to count. When the value of the timer matches the timer setting value, the output coil is ON. As long as you add the letter S in front of the letter T, the timer becomes an accumulative timer. When the conditional contact is OFF, the value of the accumulative timer is not reset. When the conditional contact is ON, the accumulative timer counts from the current value. • When X0=ON and the timer T250 takes 100 ms as the timing unit, the output coil T250 is ON when the value of the timer = timer setting value 100.
• When X0=OFF or the power is off, the accumulative timer ST250 stops counting, and the value of the timer stays the same. When X0=ON, the value of the timer is the accumulating value. When the accumulated value = timer setting value 100, the output coil T250 is ON. T1 T2 T1+T2=10sec SV: K100 T250 (PV) Y0.0 C. Timers used in function blocks T412–T511 are the timers that you can use in the function block or in interrupts. When the TMR or END instruction is executed, the timer in the functional block begins to count. When the value of the timer matches the timer setting value, the output coil is ON.
If you use a general-purpose timer in a function block or an interrupt, and the function or interrupt is not executed, the timer cannot count correctly. 2-46 Y0.0 0.0