Thread: Mysterious Z axis errors
-
31-03-2017 #11
To clarify, in case anyone else is reading this, step signals and dir signals are two very different things. Generally, step signals must be active high because that is what drivers generally need as they trigger on the rising edge of each step pulse. Dir signals are not pulses. The dir signal will be high all the time that the axis is going in one direction, and low for the other direction. What the motion controller does not know, when you first set up the machine, is whether high or low will make the motor turn, say, clockwise. That depends on how the motor is wired. First thing you do when you start configuring is see if the axis goes the right way and if not, change dir active high to active low. Perfectly normal, perfectly usual. There is no "right" setting for dir active low/high - it depends on the machine. Swap motor wires, swap active high to low - same thing done different ways.
As for this pulse frequency discussion - I don't follow the argument.
CAM tolerance - haven't pushed my machine to the point where this matters so have not looked into it at all, although I am doing more F360 CAM these days.
-
01-04-2017 #12
Regarding the CAM tolerance, it's less about the machine, and more about the fact that you design a part of dimension X, and then after cutting end up with dimension y
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
mach3 csmio ips errors
By Web Goblin in forum Artsoft Mach (3 & 4)Replies: 7Last Post: 07-01-2017, 10:47 PM -
Axis scaling errors - is this just to be expected with C7 screws?
By GND in forum Gantry/Router Machines & BuildingReplies: 22Last Post: 23-11-2016, 11:19 PM -
Motorcalc spreadsheet errors
By jimbo_cnc in forum General DiscussionReplies: 7Last Post: 10-03-2015, 07:02 PM -
NEW MEMBER: Goal - Enable 3-Axis CNC Bed Mill to Perform 5-Axis Milling
By LoveLearn in forum New Member IntroductionsReplies: 2Last Post: 25-01-2012, 08:46 PM -
Precision metal processing (3 axis, 5 axis, 7 axis) OEM
By 7AxisCNC in forum Manufacturer NewsReplies: 0Last Post: 17-05-2011, 02:04 PM
Bookmarks