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General Mach Discussion / Input Pins Are allways high (+5 volts) can not toogle on/off Limit Switch
« on: December 10, 2007, 01:13:20 PM »
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
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