[Emc-users] Subject: Re: Micro stepper driver MSD542 / KL-5042

2008-05-20 Thread Ian W. Wright
'Scuse me for stepping in but I'm a bit confused by a couple of things being said in this thread. 1. Exactly why does a low accel round corners more than a fast accel.? Does this suggest that a machine with slightly underpowered drive motors is inherently less precise than one with big

Re: [Emc-users] Subject: Re: Micro stepper driver MSD542 / KL-5042

2008-05-20 Thread Anders Wallin
Ian W. Wright wrote: 'Scuse me for stepping in but I'm a bit confused by a couple of things being said in this thread. 1. Exactly why does a low accel round corners more than a fast accel.? Does this suggest that a machine with slightly underpowered drive motors is inherently less

Re: [Emc-users] Subject: Re: Micro stepper driver MSD542 / KL-5042

2008-05-20 Thread Jeff Epler
On Tue, May 20, 2008 at 08:14:00AM +0100, Ian W. Wright wrote: why does a low accel round corners more than a fast accel.? By default, the emc trajectory planner tries to keep the greatest speed possible while touching each commanded line (or arc) in at least one spot. It does this by

Re: [Emc-users] Subject: Re: Micro stepper driver MSD542 / KL-5042

2008-05-20 Thread Jon Elson
Ian W. Wright wrote: 'Scuse me for stepping in but I'm a bit confused by a couple of things being said in this thread. 1. Exactly why does a low accel round corners more than a fast accel.? The program calculates all moves based on the specified machine acceleration in the ini file, and