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General Mach Discussion / Mach3 only reads MPG pulses in one direction.
« on: March 11, 2013, 02:19:12 AM »
Hello fellow Mach3 users,
I am coming to the end of a RF-45 build (and hair on my head) and in the process of configuring Mach3.
The system is using 2 Homan Design BOBs with 1 of them used for MPG pendant inputs and a VFD voltage generator.
The issue I’m having is that when using the MPG wheel the stepper motors will only rotate in one direction. When I swap the encoder pin assignments in Mach3 the motors only rotate in the other direction. The LEDs on the BOB work correctly no matter which direction the MPG wheel is turned, i.e. everything seems ok up to the BOB.
Another interesting thing is that when MPG #2 is setup on the Encoder/MPG’s page in Mach3 using the same pin assignments, the motors rotate both directions as they should. I would happily leave it setup that way however, the axis select switch on the pendant will only work when the system is setup to use MPG #1.
It’s been some months since I previously worked on the project but I think the MPG worked like it should back then. Since that time I have installed quite a few things like home & limit optical sensors, spindle VFD & the latest release of Mach3. Because there have been so many hardware & software changes, trying to back track is doing my head in!
Please HELP! I will be truly grateful
I am coming to the end of a RF-45 build (and hair on my head) and in the process of configuring Mach3.
The system is using 2 Homan Design BOBs with 1 of them used for MPG pendant inputs and a VFD voltage generator.
The issue I’m having is that when using the MPG wheel the stepper motors will only rotate in one direction. When I swap the encoder pin assignments in Mach3 the motors only rotate in the other direction. The LEDs on the BOB work correctly no matter which direction the MPG wheel is turned, i.e. everything seems ok up to the BOB.
Another interesting thing is that when MPG #2 is setup on the Encoder/MPG’s page in Mach3 using the same pin assignments, the motors rotate both directions as they should. I would happily leave it setup that way however, the axis select switch on the pendant will only work when the system is setup to use MPG #1.
It’s been some months since I previously worked on the project but I think the MPG worked like it should back then. Since that time I have installed quite a few things like home & limit optical sensors, spindle VFD & the latest release of Mach3. Because there have been so many hardware & software changes, trying to back track is doing my head in!
Please HELP! I will be truly grateful