[Emc-users] Korean R8's arrived

Greetings all; I have not spun them up to measure them, but these are the purtiest R8's I ever laid my eyes on. The 7/16x20 threads are far better formed than anything else in my rack of R8's. Coming by USPS, they are cold so I'll leave them in the styro shippers till they have warmed up. A

Re: [Emc-users] Korean R8's arrived

On Wednesday 04 April 2018 21:59:05 Ken Strauss wrote: > Link to the vendor, please? This isn't the same size as I bought, I bought 7/8" but its the same vendor. I couldn't find a link to his ebay store on the shipping notice.

Re: [Emc-users] ESTOP and Drive Enable handling.

The way you have the RS485 wired with the two other resistors does bias it in that direction. I disconnected the two wires and left them floating and step/dir still function. Definitely not what we want.But if you didn't have the two resistors around the 1K would the output not default to

Re: [Emc-users] ESTOP and Drive Enable handling.

> On 4. Apr 2018, at 21:57, John Dammeyer wrote: > > The STMBL AC Servo drive I'm currently working with has an ENABLE high input. > So when Low it's disabled and stepping pulses can't move the motor. its not supposed to be like that. it should be active low. I will

Re: [Emc-users] Korean R8's arrived

Link to the vendor, please? > -Original Message- > From: Gene Heskett [mailto:ghesk...@shentel.net] > Sent: Wednesday, April 04, 2018 7:53 PM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] Korean R8's arrived > > Greetings all; > > I have not spun them up to measure them,

Re: [Emc-users] For the attention of Anyone using a 7i90 through SPI

On Wednesday 04 April 2018 05:20:17 andy pugh wrote: > A bug in the smart-serial driver was, until recently, masking a bug in > the 7i90 SPI firmware. > > Mesa have fixed the bug and re-issued the bitfiles. > > The problem probably only affects systems using a 7i90 controlled > through an SPI

Re: [Emc-users] One servo system

Hi Marius Maybe a small Delta Plc from Electro Mechanica could do the job. I managed to control a stepper with one of them. On Wed, 28 Mar 2018, 17:46 Marius Liebenberg, wrote: > Hi all > I have to put together a system that will use one servo to drive a small > platform

Re: [Emc-users] One servo system

On 4 April 2018 at 09:26, Marius Liebenberg wrote: > Would the ladder logic route be good enough or are there some other > suggestions? it doesn't matter if there is "wasted" code running on the controller. If you run a whole LinuxCNC instance on the board, and that does

Re: [Emc-users] Making a steper pulse generator, would like comments

On Wednesday 04 April 2018 12:33:26 Jon Elson wrote: > On 04/03/2018 11:50 PM, Chris Albertson wrote: > > Yes the faster you go the bigger the jumps. With my 1MHz clock I > > can only make pulses with periods that are a whole number of > > microseconds. > > > > So I ask again: What is the

[Emc-users] ESTOP and Drive Enable handling.

In the past ESTOP appeared to be pretty simple a 12V or 24V control signal was routed through any number of Normally Closed (NC) switches and then run into relays and or opto-isolated inputs. Any ESTOP even would then interrupt the control voltage and relays would open dropping all power.

Re: [Emc-users] For the attention of Anyone using a 7i90 through SPI

On Wed, 4 Apr 2018, Gene Heskett wrote: Date: Wed, 4 Apr 2018 07:40:53 -0400 From: Gene Heskett Reply-To: "Enhanced Machine Controller (EMC)" To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] For the attention of Anyone

Re: [Emc-users] For the attention of Anyone using a 7i90 through SPI

On Wednesday 04 April 2018 16:17:08 Peter C. Wallace wrote: > On Wed, 4 Apr 2018, Gene Heskett wrote: > > Date: Wed, 4 Apr 2018 07:40:53 -0400 > > From: Gene Heskett > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > To:

Re: [Emc-users] ESTOP and Drive Enable handling.

On Wed, 4 Apr 2018, John Dammeyer wrote: Date: Wed, 4 Apr 2018 12:57:03 -0700 From: John Dammeyer Reply-To: "Enhanced Machine Controller (EMC)" To: "'Enhanced Machine Controller (EMC)'" Subject:

Re: [Emc-users] ESTOP and Drive Enable handling.

Ideally the e-stop would be fail safe. This means if a wire comes loose, something gets shorted or whatever the machine stops.It is designed so that some positive action is required to make the motors spin. Alarm systems are like this to. The normal signal is a "hot" wire so that if the

Re: [Emc-users] One servo system

Machinekit + PocketBeagle is good combo if you are looking for something running Linux. Chris Albertson writes: > Of course. Write a PID based control loop and put it an something > like an Arduino. I've done this a few times the control the wheels of > a mobile robot. > > The details depend

Re: [Emc-users] One servo system

I just looked at the PocketBeagle and it seems to be a good choice for servo or stepper. It will have to be headless so I would imagine that I will be using ladder to control the system with. The track length is 6m, a button is pressed and I accelerate to 8m/s and stop at the other end

[Emc-users] For the attention of Anyone using a 7i90 through SPI

A bug in the smart-serial driver was, until recently, masking a bug in the 7i90 SPI firmware. Mesa have fixed the bug and re-issued the bitfiles. The problem probably only affects systems using a 7i90 controlled through an SPI link and _also_ using smart-serial peripherals connected to the 7i90.