wiring & wizard setting for minimal working of simple normal closed limit switch

Dear Forum,

With your help, I am able to run the X,Y, Z motors and thanks for everything.

Now I want to connect my simple normal closed type limit switch for x axis only for testing to the mesa 7i95 card. but it gives "joint 0 limit switch error". If I remove the negative X limit setting, it's working fine in jog/MDI mode. It seems I have error in setting home location (30,30,30) position and limit switch position setting. I have attached all the wiring and setting.

I connect limit common pin to input pin 1 and NC pin to the ground of step0. Is the wiring OK?

suraj9735 wrote:

Dear Forum,

With your help, I am able to run the X,Y, Z motors and thanks for everything.

Now I want to connect my simple normal closed type limit switch for x axis only for testing to the mesa 7i95 card. but it gives "joint 0 limit switch error". If I remove the negative X limit setting, it's working fine in jog/MDI mode. It seems I have error in setting home location (30,30,30) position and limit switch position setting. I have attached all the wiring and setting.

I connect limit common pin to input pin 1 and NC pin to the ground of step0. Is the wiring OK?

I dont know about the wiring of that board but you are using N/C so you need to "not" the input. That would be my guess.

tommylight wrote:

I tried by inverting the pin but same error. can you explain theoretically, what does actually mean by this error?

What about the wiring?
Is it ok take the GND connection from step 0 pin(x axis). Can I take ground connection from anywhere from the mesa 7i95 board?

CR19 led is ON (RED). It should be off for normal operation. Any reason for it?

suraj9735 wrote:

CR19 led is ON (RED). It should be off for normal operation. Any reason for it?

Have you got that card actually on the alli.

This card is working properly for X,Y,Z motors, I have already tested it. This card is bought by my senior and I don't know from where he bought it. When I remove the setting for Input 0(limit switch), then it's working and running my X motor.

I guess error from software side not from card, not from wiring.

Clive wrote:

suraj9735 wrote:

CR19 led is ON (RED). It should be off for normal operation. Any reason for it?

Have you got that card actually on the alli.

Do you mean if it's bought from alli, the input pin may be corrupted or damaged permanently?

If CR19 is illuminated when LinuxCNC is running, it indicates a watchdog bite
which in turn indicates a hal setup error or a real time problem on the host PC