Immagine a simple pendant for one axis with three buttons.  X+, X- and speed boost. The idea being that pressing either direction button on its own would jog the axis at a very slow speed but holding down the speed increase button at the same time would make the axis jog much faster in the chosen direction.

Is this a sensible thing to try and do in a brain ? and would anyone be able to help me achieve this ?

Anyone .... ?

I've attached a copy of my brain attempt. So far I am able to hold down one button and get an output and then if I press a second button at the same time it will stop the first output and start a second one. However pressing the buttons individually trigger the same output, where as I need them to trigger different outputs. Does this make sense?

Should I even be attempting this in a brain or is such complexity better suited to the slower VBA macropump implementation?

This may be of help to you I also have only 1 MPG I added 4 buttons for X,Y,Z,A and the attached brains use the buttons to select the axis that the MPG will move. they also watch the limit switches. because I have Separate + and - limit switches these brains can detect which limit switch has been hit and will move the axis off the limit switch when the button for that axis is pressed.

I use these brains with the auto limit switch override feature in mach this way if I hit a limit switch I need to press the reset button then the axis that hit the limit.

 I did this because I I knew that sooner or later I would turn the MPG the wrong way while on the limit switch and break something now it just does the right thing

anyway it is not exactly what you are looking for and I was hoping to add a similar option for changing the MPG rate but never got to it.


Herb