Centroid Community CNC Support Forum

I could kid you and ask you "how you could let that happen one or two times". -------- I didn't let the "accidental start of the program" happen. I meant only that the machine has (only once or twice) come up in a state where an axis limit prevented homing.<G> I was mistaken abou...

I am vary new to this so, if there is a limit switch error sometimes and I can't get it to home, I will hit cycle start again. Sometimes this causes the machine to run the last program loaded. This is not the cnc11's programs fault but mine.(Inexperience) ---------- I don't mean to sound critical, b...

Wow... there must've been a LOT of noise on that ground! Usually, push-pull inputs like that aren't disturbed much unless the common-mode excursions exceed the V-lo or V-hi voltages (or go so high the inputs clamp). I have to admit, though, that I don't know what receivers the AIODC uses, so I have ...

Are you using the original encoders, or ones supplied by Ajax? If you get transitions on other lines when Z is making excursions, it has to be a ground fault. Just to be clear, Z- is NOT ground, although you probably know that. However, your encoders might be single-ended, in which case, Z- might be...

Limit switches may be configured either way, but for safety's sake, it is best to arrange them as normally-closed, opening upon hitting the limit. In that way, if a switch fails in its most common way (not to make good contact on closure) it fails "safe", in that it shows you hitting a lim...

Well, I have to take back the part about their not giving us the info to re-compile. It's all there. The programming manual is key, but the compiler? It's on the distribution -- mpucomp.exe. All there. It just takes time to figure it all out. One more, one more, then ONE more PLC in the repertoir! <...

Thanks VERY much for that! That's precisely what I need to do. My operators are - well... - operators, not 'machinists', per se. They push buttons. That bunch of code snippets will propel me much faster toward our goal. Without it, I'm sure (in maybe weeks of fiddling) I'd have figured it out. I am ...

Thanks, Scott. Yes, I have the manual already. That's the source from which I derived that it would be necessary to re-compile. Like I said, THAT isn't getting done until I'm dead-certain we can have some down-time on the machine. One other thing about that: I read somewhere about someone "bric...

Well, further reading in the PLC programming manual leads me to believe that I need to re-compile the PLC code with some more M94/95 bits set to macro numbers, and then I will have some M94/95 parameters besides just the 4 now defined. I haven't gone into the existing code deeply enough yet to tell,...

If you are looking for CNC system variables you can write to in order to directly make PLC outputs turn on and off, they aren't there. The CNC program can only send a polite request to the PLC program (via M94/M95, or in some cases via Machine Parameter value settings). It is always up to the PLC pr...