Posts by mortoch

Sensor Sinking or sourcing?

Unless I misunderstand, you do not need to write to the variable. You need to use the status of the variable to trigger something else.

You should be able to do that.

"If $MCR.$ENBL = X Then XXX.

Search the forum for lubrication. There are many.

You are not the first nor will you be the last to fall victim to the corrosion bug.

If it has been working "well before I started working here", that should indicate some new problem.

IMHO.

Congrats.

Check your on board battery holder for corrosion both inside and on the backside where wiring connects. Very common issue when battery alarm will not reset.

A properly set oscilloscope set to record will be a great tool here to catch random spikes.

I have fixed this error several times simply by tightening the grounding clamp/plate where all the cables enter the control cabinet.

Try this first.

Second Shift.

But what time on second shift?

Wouldn't be after external or internal lighting kicks on would it?

A similar issue occurred many moons ago and after much troubleshooting and teeth gnashing it was tracked down to a ballast failing on an outside light. This was spiking the system and causing all sorts of goblin and gremlins.

So now whenever I hear time related issues like that it is the first thing I think of.

You are not the first nor will you be the last.

Does you're PLC output a "Auto OK" bit to you're controller?

That would be my first look.

If something is dropping out it can be hard to see it happen. Put a bit on that output then trigger an RTO counter with that bit and see if it increments.

Then go from there.

Just my 2.

I would make the intruder have to press a reset outside of slow zone to insure that they have left said safe zone.

Just to eliminate any confusion or monkey business.

I have eliminated that error on several robots by merely tightening the grounding clamp that compresses onto the incoming cables at the bottom of the controller.

If you can access PLC program you should be able to find the bit that is triggering the alarm and see what cause is.

I did the industrial automation for our factory in a "different country". They would tell us they were industrial grade batteries and that was denoted the same on the battery. However they would go to the local electrical mall and buy batteries that had been on the shelf since somewhere around the turn of the century. Same issue, 3-6 months and they were dead.

Just saying.

You may want to consider pulling your battery box out and inspecting the back for corrosion or damaged wiring. I have seen it before.

How stable is current company? How stable new company? To me that is most important question.

Old Kfloppy Notes.pdf

This is what works for me.

Depends on where you live. Fanuc has facilities around the US. I went to Rochester Mi. It was great.