Wiring Homing sensor and endstop
- Thread starter jlrumeau
- Start date
breezy
Moderator
@jlrumeau
NO!!
What are you trying to achieve?
MASSO has only ONE limit/homing switch input for each axis, it doesn't need switches at each end of an axis, that is what soft limits are for.
Read this section Homing Switches and setting up homing in our quick setup guides. https://docs.masso.com.au/quick-start-guides/setup-masso-mill
If you want switches at both ends of an axis then you need to use the same type on each axis, NO proximity sensors wired in parallel or NC microswitches wired in series.
Regards,
Arie.
NO!!
What are you trying to achieve?
MASSO has only ONE limit/homing switch input for each axis, it doesn't need switches at each end of an axis, that is what soft limits are for.
Read this section Homing Switches and setting up homing in our quick setup guides. https://docs.masso.com.au/quick-start-guides/setup-masso-mill
If you want switches at both ends of an axis then you need to use the same type on each axis, NO proximity sensors wired in parallel or NC microswitches wired in series.
Regards,
Arie.
Hi @jlrumeau
Your thinking about it wrong.
A single sensor can both home an axis on your machine and provide hard limits at each end on the machines travel if you use it right.
If you install the X axis sensor in the X carriage you can put a trigger at each extreme of travel and the sensor will trip when ever it reached either end.
you can then select one end as the home position as well.
You can do the same with the Y axis. Make the sensor travel and have fixed triggers instead of the other way around.
Wiring is simplified and you need less sensors.
Hope this helps
Cheers Peter
Your thinking about it wrong.
A single sensor can both home an axis on your machine and provide hard limits at each end on the machines travel if you use it right.
If you install the X axis sensor in the X carriage you can put a trigger at each extreme of travel and the sensor will trip when ever it reached either end.
you can then select one end as the home position as well.
You can do the same with the Y axis. Make the sensor travel and have fixed triggers instead of the other way around.
Wiring is simplified and you need less sensors.
Hope this helps
Cheers Peter
spudgun
New member
Hi Peter, Happy NY to you mate.
I've finished wiring up my Masso and set hard limits on both sides of my 3 axes (therefore 6 photoelectric sensors) on 6 inputs. I now understand i have done this wrong as i tried to find inputs to end limits on the Masso but they are not present. Just so I'm clear about your explanation above, do you suggest that say for the "X-axis" which i have wired into "Input 1" for homing if i also wire the "end limit" signal wire on the same input 1, it will act like a hard limit? Therefore, i will wire 6 signal wires into 3 homing inputs. Is this correct? And if so, i probably should add a diode to isolate each signal for the paired input right?
Thanks mate
Last edited:
A happy NY to you as well.
A diode on each one would make a basic logic OR gate but it will depend on the sensors you use and what they output when idle and triggered.
If for instance both sensors output voltage when idle this will not work because both will have to be triggered to change the inputs state.
Some sensors will work nicely when wired together while others will not.
There are only 3 inputs and these are used for both homing and hard limits.
It you want to use 2 sensors per axis you will have to multiplex 2 sensors into one homing input or in your case 6 signal wires into 3 inputs
Cheers Peter
A diode on each one would make a basic logic OR gate but it will depend on the sensors you use and what they output when idle and triggered.
If for instance both sensors output voltage when idle this will not work because both will have to be triggered to change the inputs state.
Some sensors will work nicely when wired together while others will not.
There are only 3 inputs and these are used for both homing and hard limits.
It you want to use 2 sensors per axis you will have to multiplex 2 sensors into one homing input or in your case 6 signal wires into 3 inputs
Cheers Peter
spudgun
New member
Thanks Peter once again for your response!
My switches although are NC are 0v when idle and high when triggered. They are NPN so i needed to run a resistor to get a positive. I think in my instance wiring them both together will work as it will go to High when triggered. I might run a diode on each one just to make sure that a High on one sensor does not impact the other sensor.
Much appreciated and makes a lot of sense.