On 09/02/16 05:20, Kirk Wallace wrote:
> (Bottom of page here:
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?AVR
> has it been five years already?)
Sounds about right ... must get some of these longer term projects
finished ;) That includes a nice modbus module for additional inputs and
control ...
If they are anything like the manufacturer of the drives I'm using with modbus.
You pretty much will have to contact them and have them send you the modbus
manuals for the drive. Googling up the drive did bring up a different manual
that had a more ordinary looking pinout labeling for the modb
On 02/08/2016 12:54 PM, andy pugh wrote:
> On 8 February 2016 at 20:34, Bertho Stultiens wrote:
>> But, I should not hijack the thread with information theory...
>
> In theory Modbus should be better, but I don't have any information
> about the VFD interface.
>
> That's the version of information
LinuxCNC 2.7.4 has been released.
This release fixes bugs all over: in hm2 sserial, GUIs, xhc-hb04,
hy-vfd, stepconf & pncconf, and in the docs. 2.7.4 adds support for RTAI
5.0, though we have no debian packages yet, sorry. It also adds a
component to help drive some kinds of gantry machines (name
On 2/8/2016 3:54 PM, andy pugh wrote:
> On 8 February 2016 at 20:34, Bertho Stultiens wrote:
>> But, I should not hijack the thread with information theory...
> In theory Modbus should be better, but I don't have any information
> about the VFD interface.
>
> That's the version of information theo
On 8 February 2016 at 23:10, Bertho Stultiens wrote:
> I'd start with writing the manufacturer for the right docs.
I tried.
http://www.lovatoelectric.co.uk/Information-request/cnt
Appears to have a "Send" button that doesn't do anything.
--
atp
If you can't fix it, you don't own it.
http://www.
On 8 February 2016 at 23:10, Bertho Stultiens wrote:
>> I thought of that, but they only document writable parameters. None of
>> them look like a likely place to read currents or voltages.
>
> Often you have r/w registers, where you read a measured value and write
> a parameter. However, you are
On Monday 08 February 2016 14:21:35 Ed wrote:
> Rifled Breech Loader
Thanks Ed. Educational reading to be sure.
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page
On 2/8/2016 1:03 PM, Bertho Stultiens wrote:
> Telephony has been digitalized completely today. Television has
> transitioned from analog to digital, freeing more than 50% of the
> bandwidth, while increasing the number of channels. Radio will follow
> (currently running parallel).
There have bee
Andy,
This isn't the worst thing I've seen. Rs485 is a two wire differential half
duplex signalling system. The doc says that it can run up to 38.4kbps.
So you one 1 wire to the plus of the master and the vfd and the other wire
to the minus. It will run on anything twisted that is better than tin
On 02/08/2016 11:56 PM, andy pugh wrote:
>> My best guess is that they have mapped the entire register space from
>> the front-panel config (page 4-9 and forward), as documented, to the
>> communications register map. That should be possible to test with a few
>> read commands.
>
> I thought of th
On 8 February 2016 at 22:20, Bertho Stultiens wrote:
> My best guess is that they have mapped the entire register space from
> the front-panel config (page 4-9 and forward), as documented, to the
> communications register map. That should be possible to test with a few
> read commands.
I thought
On 02/08/2016 11:03 PM, andy pugh wrote:
>> Try and try again, or get a hold of the documentation. ;-)
>
> The documentation is silent on the subject:
> http://www.lovatoelectric.com/Single-phase-supply-200-240VAC-50-60Hz-EMC-suppressor-built-in-PNP-24VDC-programmable-inputs/150005010/spd
Interes
On 8 February 2016 at 21:42, Bertho Stultiens wrote:
> Try and try again, or get a hold of the documentation. ;-)
The documentation is silent on the subject:
http://www.lovatoelectric.com/Single-phase-supply-200-240VAC-50-60Hz-EMC-suppressor-built-in-PNP-24VDC-programmable-inputs/150005010/spd
On 02/08/2016 10:12 PM, andy pugh wrote:
>> I thought that ModBus was pretty standardized:
> So which register do I write to to set output frequency?
Do you have the original documentation of the VFD? I guess not.
Do you have any "old" VFD control or test software, If you have, you can
reverse eng
On 8 February 2016 at 21:04, Bertho Stultiens wrote:
> I thought that ModBus was pretty standardized:
So which register do I write to to set output frequency?
Which register do I read to monitor motor current?
(And, back to the original question, how do I wire the 8 pins on the
VFD to the 2 pi
On 02/08/2016 09:54 PM, andy pugh wrote:
> On 8 February 2016 at 20:34, Bertho Stultiens wrote:
>> But, I should not hijack the thread with information theory...
> In theory Modbus should be better, but I don't have any information
> about the VFD interface.
>
> That's the version of information
On 8 February 2016 at 20:34, Bertho Stultiens wrote:
> But, I should not hijack the thread with information theory...
In theory Modbus should be better, but I don't have any information
about the VFD interface.
That's the version of information theory that matters to me here.
--
atp
If you can
On 02/08/2016 09:12 PM, Peter C. Wallace wrote:
>> The number of bits required goes to the root of Shannon's information
>> theory. We see how effective it is in our daily life everywhere and it
>> is better than analog.
>>
>> Telephony has been digitalized completely today. Television has
>> trans
> On 02/08/2016 08:52 PM, Nicklas Karlsson wrote:
> >> Noise in analog will reduce the effective resolution, whereas noise in
> >> digital can be easily filtered and the resolution stays constant.
> >> Analog signals cannot be isolated easily and trying so results in
> >> awkward non-linearities th
On 02/08/2016 01:56 PM, Nicklas Karlsson wrote:
Screwed breeches of the Welin or de Bange type are only used with
bagged charge guns. They both use a de Bange obturator for sealing
whereas a brass-case gun used the case for obturation.
This might mean they need no lead, but the
On 02/08/2016 09:01 PM, Nicklas Karlsson wrote:
>> I agree with the sentiment that it is less than ideal to have something
>> that certainly has a local microprocessor that then creates an analog out
>> which you then read in. It's a lossy channel and subject to any number of
>> problems. That assu
On Mon, 8 Feb 2016, Bertho Stultiens wrote:
> Date: Mon, 8 Feb 2016 21:03:44 +0100
> From: Bertho Stultiens
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] Modbus wiring
>
> On 02/08/2016 08:52 PM, Nicklas Karlsson wrot
On 02/08/2016 08:23 PM, Jerry Scharf wrote:
> I agree with the sentiment that it is less than ideal to have something
> that certainly has a local microprocessor that then creates an analog out
> which you then read in. It's a lossy channel and subject to any number of
> problems. That assumes you
On 02/08/2016 08:52 PM, Nicklas Karlsson wrote:
>> Noise in analog will reduce the effective resolution, whereas noise in
>> digital can be easily filtered and the resolution stays constant.
>> Analog signals cannot be isolated easily and trying so results in
>> awkward non-linearities that need to
On Mon, 8 Feb 2016 11:23:23 -0800
Jerry Scharf wrote:
> Bertho,
>
> I agree with the sentiment that it is less than ideal to have something
> that certainly has a local microprocessor that then creates an analog out
> which you then read in. It's a lossy channel and subject to any number of
> pr
> >> Screwed breeches of the Welin or de Bange type are only used with
> >> bagged charge guns. They both use a de Bange obturator for sealing
> >> whereas a brass-case gun used the case for obturation.
> >> This might mean they need no lead, but the pictures seem to indicate
> >> one.
>
> Krupp s
> On 02/08/2016 07:01 PM, Dave Cole wrote:
> >>> RS485 is two wire, half duplex.
> >>> I think you have a RS422 connection that can run full duplex.
> >>> I don't recognize the D and R pins??Perhaps Data Ready and Request
> >>> to Send ??
> >>> Those aren't normally required for RS422.
> >> I a
Bertho,
I agree with the sentiment that it is less than ideal to have something
that certainly has a local microprocessor that then creates an analog out
which you then read in. It's a lossy channel and subject to any number of
problems. That assumes you have the software skills and documentation
On 02/08/2016 11:14 AM, Gene Heskett wrote:
> On Monday 08 February 2016 11:23:58 andy pugh wrote:
>
>> On 8 February 2016 at 16:12, Gene Heskett wrote:
>>> One question remains: Does the thread even have to have a spiral
>>> component, eg does it need to actually advance into the hole as it
>>>
On 02/08/2016 07:01 PM, Dave Cole wrote:
>>> RS485 is two wire, half duplex.
>>> I think you have a RS422 connection that can run full duplex.
>>> I don't recognize the D and R pins??Perhaps Data Ready and Request
>>> to Send ??
>>> Those aren't normally required for RS422.
>> I am becoming inc
> On 8 February 2016 at 17:40, Dave Cole wrote:
> > RS485 is two wire, half duplex.
> > I think you have a RS422 connection that can run full duplex.
> > I don't recognize the D and R pins??Perhaps Data Ready and Request
> > to Send ??
> > Those aren't normally required for RS422.
>
> I am be
On 2/8/2016 12:51 PM, andy pugh wrote:
> On 8 February 2016 at 17:40, Dave Cole wrote:
>> RS485 is two wire, half duplex.
>> I think you have a RS422 connection that can run full duplex.
>> I don't recognize the D and R pins??Perhaps Data Ready and Request
>> to Send ??
>> Those aren't normall
On 8 February 2016 at 17:40, Dave Cole wrote:
> RS485 is two wire, half duplex.
> I think you have a RS422 connection that can run full duplex.
> I don't recognize the D and R pins??Perhaps Data Ready and Request
> to Send ??
> Those aren't normally required for RS422.
I am becoming increasin
RS485 is two wire, half duplex.
I think you have a RS422 connection that can run full duplex.
I don't recognize the D and R pins??Perhaps Data Ready and Request
to Send ??
Those aren't normally required for RS422.
Dave
On 2/8/2016 8:16 AM, andy pugh wrote:
> I am tempted to attempt to contro
On Monday 08 February 2016 11:23:58 andy pugh wrote:
> On 8 February 2016 at 16:12, Gene Heskett wrote:
> > One question remains: Does the thread even have to have a spiral
> > component, eg does it need to actually advance into the hole as it
> > turns? Common sense says it should, in order to
On 8 February 2016 at 16:12, Gene Heskett wrote:
>
> One question remains: Does the thread even have to have a spiral
> component, eg does it need to actually advance into the hole as it
> turns? Common sense says it should, in order to achieve a gas tight
> seal against a shoulder at the bottom
On Monday 08 February 2016 08:39:10 Marcus Bowman wrote:
> On 8 Feb 2016, at 12:49, Peter Blodow wrote:
> > In other words, you pretend to cut a left-hand thread but have the
> > machine run in reverse so it turns out right hand?
> > Peter Blodow
>
> Yes; kind of I prefer to think of it as cut
On 8 Feb 2016, at 12:49, Peter Blodow wrote:
> In other words, you pretend to cut a left-hand thread but have the
> machine run in reverse so it turns out right hand?
> Peter Blodow
>
Yes; kind of I prefer to think of it as cutting a right hand thread upside
down (or is that inside out?).
yea it's a bit short on pins
i use these
http://www.ebay.co.uk/itm/Useful-80mm-USB-2-0-to-RS-485-RS-422-Serial-Converter-Adapter-Cable-ST-/151912461839
On 8 February 2016 at 13:16, andy pugh wrote:
> I am tempted to attempt to control the lathe VFD with Modbus.
>
> I have one of these:
>
> ht
I am tempted to attempt to control the lathe VFD with Modbus.
I have one of these:
http://www.ebay.com/itm/CH340-USB-to-RS485-485-Converter-Adapter-Module-For-Win7-Linux-XP-Vista-/201258967189?hash=item2edbf82095:g:SDAAAOSw2s1UrPYd
I need to connect to 8P8C connector on the VFD which has pins
1 A
In other words, you pretend to cut a left-hand thread but have the
machine run in reverse so it turns out right hand?
Peter Blodow
Am 08.02.2016 11:42, schrieb Marcus Bowman:
> On 8 Feb 2016, at 10:04, andy pugh wrote:
>
>> On 7 February 2016 at 23:37, Marcus Bowman
>> wrote:
>>
>>> Easy. mount
I managed to get the Anilam chief engineer on the phone one day not long
after purchasing the BP and he walked me through the tuning process of
the drives. I'll take a look to see if I have the same cards as you or
not. For the drives part you need the analog velocity pins and the
enable pin. O
On Feb 8, 2016 5:02 AM, "andy pugh" wrote:
>
> On 8 February 2016 at 10:42, Marcus Bowman
> wrote:
> > For an internal right-hand thread, the problem is often that the tool
feeds into the hole from the right, and bumps into the bottom of the hole.
It would be the same for an external thread bumpi
When I worked in the shipyard we cut the gun mounts with pretty
conventional home made boring bars made out of H beams and other stuff
with a star wheel on the outside that hit a stob welded to the wall to
increment the tool out. It was turned by a gear motor attached to the
ceiling. Took about
On 8 February 2016 at 10:42, Marcus Bowman
wrote:
> For an internal right-hand thread, the problem is often that the tool feeds
> into the hole from the right, and bumps into the bottom of the hole. It would
> be the same for an external thread bumping into a shoulder on the left.
Ah, OK. That
On 8 Feb 2016, at 10:04, andy pugh wrote:
> On 7 February 2016 at 23:37, Marcus Bowman
> wrote:
>
>> Easy. mount the tool upside down, and start at the blind bottom.
>
> Sorry, I am not quite understanding your description?
>
Yes; apologies; my rather quick response was a bit cryptic...
For
On 7 February 2016 at 23:37, Marcus Bowman
wrote:
> Easy. mount the tool upside down, and start at the blind bottom.
Sorry, I am not quite understanding your description?
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
Greetings all;
On inspecting the various little subroutine files that go with
camview-emc, the _camon.ngc and _camoff.ngc functions seem to be defined
well enough I can deduce what they do.
Then there is a _camstore.ngc, which records an 8 item array of XY
coords, but whose ultimate function se
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