Inductive Limit Switch problem

[dazp1976]

Nope, that's no advantage because if you had a decent board you wouldn't have this problem in first place and this thread wouldn't exist.!! . . . Throw the bag of shite in the Bin and buy a decent board. While you are at it spend a bit more buy one with Ethernet...

I've got a crappy £5 board on my benchtop machine and it works well for me but I only have the estop connected no physical limit switches as yet.
Haven't figured out my spindle wiring either, still doing that manually
1 question from me is that,. If I have a NO estop I'll need NO limit switches yes? Or does it not matter if estop is NO and limits are NC?

I plan on getting an ess in the future and use one board running axis/spindle and one board running estop/limits.

[JAZZCNC]

I've got a crappy £5 board on my benchtop machine and it works well for me but I only have the estop connected no physical limit switches as yet.
Haven't figured out my spindle wiring either, still doing that manually
1 question from me is that,. If I have a NO estop I'll need NO limit switches yes? Or does it not matter if estop is NO and limits are NC?

I plan on getting an ess in the future and use one board running axis/spindle and one board running estop/limits.

You think it works well because you have nothing to compare it against.! When you get the new controller with higher pulse freq etc you'll see the difference.

Regards the N/O question then provided you use separate inputs then you can use different switch types. Obviously if wiring in series and sharing the same input they must all be the same type.

Also if your thinking to buy Warp9 ESS then I'd look at others like UC300 because they are better than ESS and you are not stuck with mach3/4.

[dazp1976]

You think it works well because you have nothing to compare it against.! When you get the new controller with higher pulse freq etc you'll see the difference.

Regards the N/O question then provided you use separate inputs then you can use different switch types. Obviously if wiring in series and sharing the same input they must all be the same type.

Also if your thinking to buy Warp9 ESS then I'd look at others like UC300 because they are better than ESS and you are not stuck with mach3/4.

Thanks. There's eperate connections for estop and each axis limits. 2 switches will be wired in series per axis.

In regard to the controller in the u.k. I can easily get an ESS or a UC400eth but the 400 has limited ports.
I've found a UC300eth-5lpt in Ireland and that's about it.

I'll still end up using the cheap boards on them though but that shouldn't matter too much, should it.

[Voicecoil]

Thanks. There's eperate connections for estop and each axis limits. 2 switches will be wired in series per axis.

I'll still end up using the cheap boards on them though but that shouldn't matter too much, should it.

As mentioned before make sure the "cheap" board has Inputs that are opto-isolated.

[JAZZCNC]

Thanks. There's eperate connections for estop and each axis limits. 2 switches will be wired in series per axis.

In regard to the controller in the u.k. I can easily get an ESS or a UC400eth but the 400 has limited ports.
I've found a UC300eth-5lpt in Ireland and that's about it.

I'll still end up using the cheap boards on them though but that shouldn't matter too much, should it.

And do you think you'll need more than 10 inputs and 24 outputs.? I'm also not sure if some of those Outputs on the second port can be configured as inputs in software.? Only if you plan on having an ATC will you probably need more than 10 inputs.

Regards the Cheap BOB then yes, of course, it will make a difference. It's like having 500HP engine and fitting bald tyres.? Pointless.!

Any machines only as good as the weakest link so fitting a good card with a cheap BOB that probably can't keep up doesn't make sense to me. This whole thread proves this.
I fit good electronics, which yes cost more, but I never have any of this shit to deal with and the extra cost is made back by the fact I'm not running around fixing machines or put another way the owner doesn't have any downtime which costs money.!! . . . . You get what you pay for.!

If your going to use a cheap BOB then save your money don't buy ESS or ETH400 and use Linux CNC. You have half a chance of good machine and won't cost anything other than it's a steep learning curve.

[dazp1976]

And do you think you'll need more than 10 inputs and 24 outputs.? I'm also not sure if some of those Outputs on the second port can be configured as inputs in software.? Only if you plan on having an ATC will you probably need more than 10 inputs.

Regards the Cheap BOB then yes, of course, it will make a difference. It's like having 500HP engine and fitting bald tyres.? Pointless.!

Any machines only as good as the weakest link so fitting a good card with a cheap BOB that probably can't keep up doesn't make sense to me. This whole thread proves this.
I fit good electronics, which yes cost more, but I never have any of this shit to deal with and the extra cost is made back by the fact I'm not running around fixing machines or put another way the owner doesn't have any downtime which costs money.!! . . . . You get what you pay for.!

If your going to use a cheap BOB then save your money don't buy ESS or ETH400 and use Linux CNC. You have half a chance of good machine and won't cost anything other than it's a steep learning curve.

Looks like I can get it ok so I'm leaning towards the UC300eth-5lpt and opting for a UCSB breakout board. Get some cables and NPN-NO sensors too and use it for axis, limit & stop control- http://cncdrive.com/UCSB.html.
Then I'll use my cheap board for spindle control and any relays.
What do you reckon?
Futureproofs it in case I ever get to build a 3 axis ATC or similar at a later date. (likely £3000 ish with tooling....ouch!!!! Don't tell the wife!)

I'd be comfortable with the ESS but like you say. It gives me the option of going away from Mach3.
It's a tricky decision.