Siemens LOGO!

nicknzj · May 10, 2012

Hi all,

I have a question on Siemens LOGO! programming.
I need to size a timer that function as below:
when the EN of the timer is from 0 to 1 the timer start counting, in between this timer is counting, if EN is set 0 to 1, the timer will hold on, again when EN receive signal 1, then the timer will continue counting at the value that hold on just now.

please advise the above function timer.

Homer_BL · May 11, 2012

1. Use flip-flops to make your own timebase, then convert it's output pulses to a single-scan pulses.
2. Use counter in a way that pulses from flip-flop, can increase a counter, only if primary condition is ON.
3. chek the status of a counter for elapsed time (set number of pulses counted).

KalleOlsen · May 11, 2012

nicknzj said:
Hi all,

I have a question on Siemens LOGO! programming.
I need to size a timer that function as below:
when the EN of the timer is from 0 to 1 the timer start counting, in between this timer is counting, if EN is set 0 to 1, the timer will hold on, again when EN receive signal 1, then the timer will continue counting at the value that hold on just now.

please advise the above function timer.

I had a similar problem once, and had to use counters that counted seconds pulses conditionally.
It is at least 10 years ago, so both the code, the LOGO and LOGO software has vanished...

Kalle

nicknzj · May 11, 2012

thank all your reply.
I have done it by counter !

Siemens LOGO!

nicknzj

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Homer_BL

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KalleOlsen

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nicknzj

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