1st time

RogerBrunner · Feb 28, 2017

I'm new to PLC programming, however my system seems very simple compared to others I've been reading on this site. I have layout my 1st system diagram and 95% of it appears to be working correctly.

I4 and I5 trigger Q5, Q6, Q7, Q8, Q9 for 30 Sec. and drop out if I4 clears before 30 Sec., however I5 is only a momentary button.

Any suggestions!!!!

nhatsen · Feb 28, 2017

RogerBrunner said:
I'm new to PLC programming, however my system seems very simple compared to others I've been reading on this site. I have layout my 1st system diagram and 95% of it appears to be working correctly.

I4 and I5 trigger Q5, Q6, Q7, Q8, Q9 for 30 Sec. and drop out if I4 clears before 30 Sec., however I5 is only a momentary button.

Any suggestions!!!!

Are you working with a Siemens Logo? Anyway, in Logo there's a block named Wiping Relay: it receives a trigger signal (pulse) and the output is activated only during a period of time. Look for a similar block in your software instead of using a simple timer.

RogerBrunner · Feb 28, 2017

IDEC Smart Relays

nhatsen · Feb 28, 2017

Ok. Use Edge–Triggered Interval Time – Delay Relay instead of Interval Time–Delay Relay - Pulse Output (B010 in your diagram).

RogerBrunner · Feb 28, 2017

That works, However i need that output to clear upon both inputs returning to normal

osmanjdt · Feb 28, 2017

test

1st time

RogerBrunner

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nhatsen

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RogerBrunner

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nhatsen

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RogerBrunner

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osmanjdt

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