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Messages - joshie410

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1
Thanks guys, I will try all of your recommendations and thanks for the speedy replies. I will let you know if they work, and, if you like, post some pics of my machine.
But just so I am clear, you don't have to apply voltage to the input pins?
You can either have N.O. switches that ground out the +5 volts when tripped or
N.C. switches when tripped, open the circut (thus, the +5 volts is still present in the pin)
You can only tell Mach3 how to interpret the presence of +5 volts in the pin i.e. +5 volts = high or +5 volts equals low

Here is the listing description of the limit switch board from Ebay and a scanned page from the manual.
"This board makes connecting limit switches and home switches to your computer from your machine easy and gives the most positive active high input that can be used with virtually any CNC Software. It has a power supply input and a 5 volt DC regulator and pull up resistors that will send positive +5 volt input signals from your limit switch to your computer.  It allows you to use any or all 5 of your computers input pins (any ones that your software allows) to input home or limit switch signals to your software.  It allows multiple limit switches per input.  Comes with complete documentation including description and wiring diagrams.  You will need a 5-20 vdc power supply to power this board, or buy our combo with power supply."


2
Hello,
This is my first post. I have completed my machine and everything works. However, I cannot configure my limit switches. I bought a limit switch board from Hubbard CNC Inc (eBay store, see item # 330196205851). My interpretation of the wiring method is you need the input pins to be 0 volts and when a switch is tripped the limit switch board sends +5 volts to the corresponding input pin. My problem is this, my input pins put out +5 volts and I can't get them to go to 0 volts. When a switch is tripped the "watch dog" is triggered. I have played with the settings on the "input pins" page i.e., checking/un-checking "active low", but no luck. I have also played with the debounce settings but I don't think this is applicable to my situation. I have also downloaded a Printer Port Monitor program that allows you to see the status of each pin (input or output, high or low, and toggle them manually to high or low) The input pins cannot be toggled and they are allways "high" (+5 volts). How can you change input pins so they are allway low (0 volts)Help a noob out
Josh

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