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Parallel Port breakout boards, motherboards, and dedicated accessories / problem with paralel port pin 10 running onpdmx 126 with mach3
« on: October 19, 2016, 11:01:49 AM »
First , my english is not accurate , as i?m Brazilian. sorry about that.
i have a cnc machine ( router with servo motors ) driven by a PMDX 126 .
the estop function is working fine : when emergency button is pressed the mach 3 resets and turn to off line, and whwn i turn off the machine the same occurs .
But when turn off the pmdx after a established connection f , , clicking the reset button on mach 3 it lights and appears to be on line , virtually.
i checked the voltage on pin 10 and notice that after turned off the pmdx doesn't reset the 5v that comes from the pc parallel port in order to doesn't let the mach 3 turn on line . Only if i turn off the pc or disconnect and reconnect the parallel cable mach3 returns to know that the pmdx is out of service and the voltage becomes 5 V again . ( that voltage is generate t from pc?s parallels port - of course )
with the mach 3 and pmdx connected and working fine this voltage is about 0v . After a cnc power down it doesn?t returns to 5 v . the tension is about 1,30V vdc witch is sufficient to mach 3 think that the system is on line .
there is a capacitor and resistor between the pin and his way to the Ci ( i think it is the parallel controller. is any possibility that this capacitor is out of range and grounded after the first connection ?
tks
Don
i have a cnc machine ( router with servo motors ) driven by a PMDX 126 .
the estop function is working fine : when emergency button is pressed the mach 3 resets and turn to off line, and whwn i turn off the machine the same occurs .
But when turn off the pmdx after a established connection f , , clicking the reset button on mach 3 it lights and appears to be on line , virtually.
i checked the voltage on pin 10 and notice that after turned off the pmdx doesn't reset the 5v that comes from the pc parallel port in order to doesn't let the mach 3 turn on line . Only if i turn off the pc or disconnect and reconnect the parallel cable mach3 returns to know that the pmdx is out of service and the voltage becomes 5 V again . ( that voltage is generate t from pc?s parallels port - of course )
with the mach 3 and pmdx connected and working fine this voltage is about 0v . After a cnc power down it doesn?t returns to 5 v . the tension is about 1,30V vdc witch is sufficient to mach 3 think that the system is on line .
there is a capacitor and resistor between the pin and his way to the Ci ( i think it is the parallel controller. is any possibility that this capacitor is out of range and grounded after the first connection ?
tks
Don