MAch3 CNC question

Dave38

Dave38

theemperorhasnoclotheson
Silver Member
I am getting ready to wire up my home switches and was wondering why Mach3 recommends that you hook them up in series when they also have separate pins for each axis? I would think using each separate axis would be better, wouldn't it?
I am using prox. sensors that are normally open and therefore doesn't play into the series setup well. I know its recommended to be using normally closed switches, but I had these on hand already and don't want to wait another 3 weeks for the NC from China before I can even play with the mill. I will be ordering them this weekend and will change them out once they arrive.
Dave
 
i would never wire home switches in series, only limits. I'm not even sure how you would wire a proxi in series.
 
LGSM3 said:
where did you read that NC switches are recommended?
Click to expand...

Normally closed switches would be my preference because if a wire broke or got loose you would find out immediately, not when the machine blew past it's stop. I see no other advantage to either scheme. But I'm not an expert.

JC
 
LGSM3 said:
where did you read that NC switches are recommended?
Click to expand...

In the Mach3 setup guide it says to use NC, and connect in series. I read thru the Mach3 forums and other forums and the it was recommended also, and I understand the reasoning, as JC stated above, I just had these on hand already. Tomorrow I will be playing with hooking them to the individual inputs and see what happens.
Dave
 
I was a system repairman on large NC and CNC machine tools............. it is common for all Estop switches to be NC for safety reasons.

Kim
 
The reason Mach manual shows them in series is to minimize the number of inputs used. I am fairly certain that prox switches can't be wired in series like that. I also don't like mechanical switches or prox switches for this job as the trigger point varies. If there are good prox switches out there I have not tried them. I use optical switches.

Jim.
 
Mc2 said:
The reason Mach manual shows them in series is to minimize the number of inputs used. I am fairly certain that prox switches can't be wired in series like that. I also don't like mechanical switches or prox switches for this job as the trigger point varies. If there are good prox switches out there I have not tried them. I use optical switches.

Jim.
Click to expand...

I agree but there a ***** to wire. Wish there were some more readily available like the pmdx that was discontinued.
 
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