5i25 + 7i85s +....

I have to partially recant my previous statement. I based my statement on observation and the fact that many people use common inputs for limits. The machines i've set up have all used independent limits, but to be honest with you I had never really tested what would happen if the machine was jogged the wrong way when a limit switch is active. I tested it on one of our machines on my way out the door and found that Linuxcnc did in fact not let me jog further into the limit (I pressed the switch by hand while the machine was in the middle of travel. When I re-powered the machine with the limit active and the override limits checked, and I tried to jog towards the limit, and an alarm message was generated, and no movement occurred.

I am not sure what the exact behavior is when using a common switch input. (I don't have a machine set up that way to try it.)

I have not noticed any documentation on this subject of exactly how Linuxcnc behaves with different configuration combinations. (that doesn't mean it isn't out there)

As i have my system ready to test it, i will try different setups and i will post the results in this week or the following.

Tahnk you all.

Hi,

Im testing the system, but i dont know what is the name my pins of the 5i25.

I want to use the A,B,INDEX of ENC3 of my 7i85s, how can i call them in the HAL file?

Thank you.

Why do you want A, B and index in HAL? You don't normally need to look at the encoder inputs in HAL, you look instead at the encoder counts and position HAL pins.

You can look at the pins using Show HAL Configuration.

If you were wanting to use these as GPIO it is a little more complicated, because the 7i85 reads the encoders with a mux to save pins. It is reading 12 encoder pins (3pins X 4 encoders) using only 7 pins from the 5i25 port. The rest of the pins in the 5i25 port are your 8 step/dir pins, and 2 for the Smart Serial port.