Timer question

[justwhy2003 0]

Hello On an FX1N i require a timer that will time for over an hour. its to set the on and off times for a pump. The max resolution of the timers available is 100mS and the timers only go as far as 32768 ie 54 minutes. I was trying to use a counter with the minute pulse bit (m8014) but i need the same non-retentive operation of a timer. Is the only solution to use 2 timers in series, im entering the timer values via a D register, this method means i will have to half the register value and give it to both timers. is there a simpler solution like a timer with a larger resolution? Thanks Justin

[Gambit 326]

I was trying to use a counter with the minute pulse bit (m8014) but i need the same non-retentive operation of a timer. Can't you reset the counter when needed?

[justwhy2003 0]

yeah i probably could but i was hoping for a tidier solution. Im going for the 2 timers in series and halving the register value between the 2, it seams to work well. thanks

[Rodney 21]

Justwhy2003 If you used the counter and what ever conditions that become true or false that would reset a timer. You could use the same conditions to reset (RST) a counter. Rodney

[Crossbow 295]

I would use the 1-second clock pulse to trigger a counter, count 60 pulses, that's a minute, then count 60 of those for an hour. As for the non-retentive effect, why not reset the counters when the operation is not active?