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LDmicro Forum - question about eletronic |
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question about eletronic (by silnei santana de souza)
hi, i am from brazil my name is silnei s. de souza
i learn your tutorial and i like so muth . do you can me give for download a program in ladder with ldmicro of a timer of 1 hour . ex. when i put the in 1 the system stay on to 1 hour and befour off or off when i press a botton in the enter 2 . thank you so muth . i hope so can you help me . help a brother brazillian lover from eletronics . see you later .
(no subject) (by Jonathan Westhues)
Numbers in LDmicro are signed sixteen bit integers, so the maximum representable value is 32767. So the longest possible delay with a TON or TOF timer is 32767 cycle times, which for a typical 10 ms cycle time is about five minutes.
To delay for longer, you can use a timer to make an internal relay oscillate at some specified frequency, for example once every second. You can then clock a counter with the internal relay. See the attachment for an example.
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