Re: [Emc-users] Fiber optic control for CNC

On Saturday 29 April 2017 15:17:23 dave wrote: > I finally climbed my shelving and checked the fiber. I found (maybe > 200') of 2.8mm x 2.0 mm. No other information on the reel. In addition > I checked one of my reels of 62.5/125 um Berk-tek plenum fiber. At > least one end is terminated in

Re: [Emc-users] Fiber optic control for CNC

I finally climbed my shelving and checked the fiber. I found (maybe 200') of 2.8mm x 2.0 mm. No other information on the reel. In addition I checked one of my reels of 62.5/125 um Berk-tek plenum fiber. At least one end is terminated in hot-melt connectors: what ever that means. It has simply

Re: [Emc-users] Fiber optic control for CNC

On Monday 24 April 2017 13:11:08 Chris Albertson wrote: > On Mon, Apr 24, 2017 at 3:05 AM, Gene Heskett wrote: > > On Monday 24 April 2017 01:17:33 dave wrote: > > > On 04/23/2017 08:30 PM, Gene Heskett wrote: > > > > On Sunday 23 April 2017 23:14:34 dave wrote: > > > >>

Re: [Emc-users] Fiber optic control for CNC

On Mon, Apr 24, 2017 at 3:05 AM, Gene Heskett wrote: > On Monday 24 April 2017 01:17:33 dave wrote: > > > On 04/23/2017 08:30 PM, Gene Heskett wrote: > > > On Sunday 23 April 2017 23:14:34 dave wrote: > > >> On 04/23/2017 12:44 PM, Chris Albertson wrote: > > >>> Looks like

Re: [Emc-users] Fiber optic control for CNC

On Monday 24 April 2017 01:17:33 dave wrote: > On 04/23/2017 08:30 PM, Gene Heskett wrote: > > On Sunday 23 April 2017 23:14:34 dave wrote: > >> On 04/23/2017 12:44 PM, Chris Albertson wrote: > >>> Looks like this is a dead end technology. Everyone has gone with > >>> HDMI. > >>> > >>> But

Re: [Emc-users] Fiber optic control for CNC

On 04/23/2017 08:30 PM, Gene Heskett wrote: > On Sunday 23 April 2017 23:14:34 dave wrote: > >> On 04/23/2017 12:44 PM, Chris Albertson wrote: >>> Looks like this is a dead end technology. Everyone has gone with >>> HDMI. >>> >>> But really you don't need much to send a differential signal to a

Re: [Emc-users] Fiber optic control for CNC

On Sunday 23 April 2017 23:14:34 dave wrote: > On 04/23/2017 12:44 PM, Chris Albertson wrote: > > Looks like this is a dead end technology. Everyone has gone with > > HDMI. > > > > But really you don't need much to send a differential signal to a > > stepper driver Anything that can invert a 5V

Re: [Emc-users] Fiber optic control for CNC

On 04/23/2017 12:44 PM, Chris Albertson wrote: > Looks like this is a dead end technology. Everyone has gone with HDMI. > > But really you don't need much to send a differential signal to a stepper > driver Anything that can invert a 5V logic signal will work. The drivers > don't want RS422

Re: [Emc-users] Fiber optic control for CNC

Circling back to the start of this thread, these guys already did the work. http://hackaday.com/2016/03/20/add-fiber-optic-control-to-your-cnc/ On Sunday, April 23, 2017, 10:06:55 AM MDT, Gene Heskett wrote:On Sunday 23 April 2017 06:47:12 Gene Heskett wrote: > On Sunday

Re: [Emc-users] Fiber optic control for CNC

Looks like this is a dead end technology. Everyone has gone with HDMI. But really you don't need much to send a differential signal to a stepper driver Anything that can invert a 5V logic signal will work. The drivers don't want RS422 levels, just logic levels. and the receiver is built into

Re: [Emc-users] Fiber optic control for CNC

On Sunday 23 April 2017 10:41:06 Ralph Stirling wrote: > Gene, > > You might find it useful look at how industrial sensors do this. I > use a lot of Automation Direct fiber prox sensors. They have both > thru-beam and diffuse reflective types. In any case, they always have > lenses on the ends

Re: [Emc-users] Fiber optic control for CNC

On Sunday 23 April 2017 10:03:21 dave wrote: > the foxcon stuff looks a bit pricey. However ... > > http://www.mouser.com/Toshiba/Optoelectronics/Fiber-Optics/Fiber-Optic >-Transmitters-Receivers-Transceivers/TOSLINK/_/N-6qrgo?P=1z0zkx4Z1ybqc2 >q > > It actually looks affordable including cables.

Re: [Emc-users] Fiber optic control for CNC

On Sunday 23 April 2017 06:47:12 Gene Heskett wrote: > On Sunday 23 April 2017 02:03:02 Chris Albertson wrote: > > Gene, > > They do make such devices. But there is one fundamental difference > > between a fiber cable and an isolator, the cable can have any length > > and hence a WIDE range if

Re: [Emc-users] Fiber optic control for CNC

Gene, You might find it useful look at how industrial sensors do this. I use a lot of Automation Direct fiber prox sensors. They have both thru-beam and diffuse reflective types. In any case, they always have lenses on the ends of the fibers.

Re: [Emc-users] Fiber optic control for CNC

the foxcon stuff looks a bit pricey. However ... http://www.mouser.com/Toshiba/Optoelectronics/Fiber-Optics/Fiber-Optic-Transmitters-Receivers-Transceivers/TOSLINK/_/N-6qrgo?P=1z0zkx4Z1ybqc2q It actually looks affordable including cables. 10 Mb/s but that should handle anything linuxcnc needs.

Re: [Emc-users] Fiber optic control for CNC

On Sunday 23 April 2017 02:03:02 Chris Albertson wrote: > Gene, > They do make such devices. But there is one fundamental difference > between a fiber cable and an isolator, the cable can have any length > and hence a WIDE range if attenuation.The cable could be short and > with high quality

Re: [Emc-users] Fiber optic control for CNC

On Sunday 23 April 2017 01:58:32 Erik Christiansen wrote: > On 22.04.17 21:24, Gene Heskett wrote: > > I watched the local cable folks install a fiber link from our studio > > output to the cable head end in Enterprise WV, 39 klicks long as the > > cable went. This was in about 1998. Had to send

Re: [Emc-users] Fiber optic control for CNC

Gene, They do make such devices. But there is one fundamental difference between a fiber cable and an isolator, the cable can have any length and hence a WIDE range if attenuation.The cable could be short and with high quality termination and low losses in the conniptions of it could be very

Re: [Emc-users] Fiber optic control for CNC

On 22.04.17 21:24, Gene Heskett wrote: > I watched the local cable folks install a fiber link from our studio > output to the cable head end in Enterprise WV, 39 klicks long as the > cable went. This was in about 1998. Had to send the splicer back and > get new knives or something in it, but

Re: [Emc-users] Fiber optic control for CNC

On Saturday 22 April 2017 20:03:05 dave wrote: > Gene, > I thought about the limit switch thing years ago. The problem is > getting enough energy into a small fiber. > 62.5 um is not a large target. However, 900 um fiber if you can find > it might be just right. For short runs even plastic fiber

Re: [Emc-users] Fiber optic control for CNC

On 04/22/2017 01:01 PM, Gene Heskett wrote: > On Saturday 22 April 2017 14:26:56 Linden wrote: > >> When I worked in the semi con industry we used to have converters for >> regular rs232 serial com at 9200 bod. Was a 9 pin sub d at one end of >> the adaptor then 2 glass fiber cables plugged in

Re: [Emc-users] Fiber optic control for CNC

In other words you just need long distance opto-isolators. On Saturday, April 22, 2017, 2:06:53 PM MDT, Gene Heskett wrote: Gee I wish I could convince folks I do NOT need a serial signal at such and such a baud rate. ALL I want to do is turn on an led shining into the

Re: [Emc-users] Fiber optic control for CNC

Probably. A google for fiber optic USB shows the thing exists. On Saturday, April 22, 2017, 1:46:56 PM MDT, Roland Jollivet wrote:Maybe not for CNC, but would USB-fibre -- fibre-USB cables transcend the terrible 5m limit?

Re: [Emc-users] Fiber optic control for CNC

On Saturday 22 April 2017 14:26:56 Linden wrote: > When I worked in the semi con industry we used to have converters for > regular rs232 serial com at 9200 bod. Was a 9 pin sub d at one end of > the adaptor then 2 glass fiber cables plugged in to the other. The > receptacle and the fiber cable

[Emc-users] Fiber optic control for CNC

Dang..., posted too soon; https://www.corning.com/optical-cables-by-corning/worldwide/en/products/usb- optical-cables.html On 22 April 2017 at 21:42, Roland Jollivet wrote: > > Maybe not for CNC, but would USB-fibre -- fibre-USB cables transcend the > terrible 5m

[Emc-users] Fiber optic control for CNC

Maybe not for CNC, but would USB-fibre -- fibre-USB cables transcend the terrible 5m limit? On 22 April 2017 at 20:26, Linden wrote: > When I worked in the semi con industry we used to have converters for > regular rs232 serial com at 9200 bod. Was a 9 pin sub d at one end of

Re: [Emc-users] Fiber optic control for CNC

When I worked in the semi con industry we used to have converters for regular rs232 serial com at 9200 bod. Was a 9 pin sub d at one end of the adaptor then 2 glass fiber cables plugged in to the other. The receptacle and the fiber cable were made by omron. I think the device itself was made in

Re: [Emc-users] Fiber optic control for CNC

On Friday 21 April 2017 19:10:23 dave wrote: Did you get my PM to you yesterday evening? > Years ago when I thought fiber might catch-on I grabbed some 62.5/120 > plenum fiber at Boeing Surplus. > I got as far as connecting a 10-base2 card to a fiber converter > fishing out both ends of the

Re: [Emc-users] Fiber optic control for CNC

Fiber was 200 megabit, 100 each way. Had to have two fibers for full speed. Then came 100 megabit full duplex wired Ethernet, matching the speed of fiber. For some reason companies quit working on fiber to speed it up as an alternative to Ethernet. Then came gigabit, 2.5 gigabit, 5 and now 10

Re: [Emc-users] Fiber optic control for CNC

Years ago when I thought fiber might catch-on I grabbed some 62.5/120 plenum fiber at Boeing Surplus. I got as far as connecting a 10-base2 card to a fiber converter fishing out both ends of the fiber on the reel and terminating with 3M (?) hot-melt end. It worked nicely but 10 Mhz isn't

Re: [Emc-users] Fiber optic control for CNC

On Thu, Apr 20, 2017 at 8:54 PM, Danny Miller wrote: > Leadshine drives input/output are not just opto, they're differential. > i.e. the step signal has 2 wires and dir has 2 wires, You are right the noise impunity could be VERY good. But I bet 99% of users simply tie one

Re: [Emc-users] Fiber optic control for CNC

On 21.04.17 06:57, Gene Heskett wrote: > On Friday 21 April 2017 04:53:14 Erik Christiansen wrote: > > At Digi-key, this Broadcom offering looks just like one end: > > > > https://www.digikey.com/product-detail/en/broadcom-limited/SP63858 > >/516-2872-ND/2220931 > > > Neat. North of $12? No

Re: [Emc-users] Fiber optic control for CNC

On Friday 21 April 2017 04:53:14 Erik Christiansen wrote: > On 20.04.17 14:51, Gene Heskett wrote: > > The led makers have now had 40+ years to design such a package, and > > I fail to understand why it has not happened. > > Somewhere near the bottom of my junkbox is an envelope with a pair of >

Re: [Emc-users] Fiber optic control for CNC

On Thursday 20 April 2017 23:54:53 Danny Miller wrote: > Leadshine drives input/output are not just opto, they're differential. > i.e. the step signal has 2 wires and dir has 2 wires, there's no > common ground or common anode. So they're not just galvoisolated from > the pulse source, but from

Re: [Emc-users] Fiber optic control for CNC

On 20.04.17 14:51, Gene Heskett wrote: > The led makers have now had 40+ years to design such a package, and I > fail to understand why it has not happened. Somewhere near the bottom of my junkbox is an envelope with a pair of Siemens opto-link (real product name long forgotten) devices, which

Re: [Emc-users] Fiber optic control for CNC

ection so far. I can live with that.  We'll see what falls out of my email box in the next few hours. > - Original Message - > From: "Gregg Eshelman" <g_ala...@yahoo.com> > To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.ne

Re: [Emc-users] Fiber optic control for CNC

From: Gene Heskett [mailto:ghesk...@shentel.net] >>> Sent: Thursday, April 20, 2017 2:51 PM >>> To: emc-users@lists.sourceforge.net >>> Subject: Re: [Emc-users] Fiber optic control for CNC >>> >>> On Thursday 20 April 2017 11:22:03 Todd Zuercher wrote: >>

Re: [Emc-users] Fiber optic control for CNC

fibre patch cables with SMA terminations to avoid making your own. > >> -Original Message- >> From: Gene Heskett [mailto:ghesk...@shentel.net] >> Sent: Thursday, April 20, 2017 2:51 PM >> To: emc-users@lists.sourceforge.net >> Subject: Re: [Emc-users] Fiber optic c

Re: [Emc-users] Fiber optic control for CNC

sts for > more info. W/O the fibers, we're under a $5 bill a connection so far. I can live > with that. We'll see what falls out of my email box in the next few hours. > > > ----- Original Message - > > From: "Gregg Eshelman" <g_ala...@yahoo.com> > > To:

Re: [Emc-users] Fiber optic control for CNC

o: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] Fiber optic control for CNC > > On Thursday 20 April 2017 11:22:03 Todd Zuercher wrote: > > > Fanuc has been using fiber optic connections for more than 30 years. > > And I work with an old SCM machine with a Num 1040 control that

Re: [Emc-users] Fiber optic control for CNC

giKey furiously sending out requests > for more info. W/O the fibers, we're under a $5 bill a connection so > far. I can live with that. We'll see what falls out of my email box in > the next few hours. > >> ----- Original Message - >> From: "Gregg Eshelman" <

Re: [Emc-users] Fiber optic control for CNC

ine Controller (EMC)" > <emc-users@lists.sourceforge.net> Sent: Thursday, April 20, 2017 > 4:39:08 AM > Subject: [Emc-users] Fiber optic control for CNC > > Looks interesting. Can't have a groun

Re: [Emc-users] Fiber optic control for CNC

Gregg Eshelman" <g_ala...@yahoo.com> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Thursday, April 20, 2017 4:39:08 AM Subject: [Emc-users] Fiber optic control for CNC Looks interesting. Can't have a ground loop when there's no wires. ht

[Emc-users] Fiber optic control for CNC

Looks interesting. Can't have a ground loop when there's no wires. http://hackaday.com/2016/03/20/add-fiber-optic-control-to-your-cnc/ -- Check out the vibrant tech community on one of the world's most engaging tech