- vcf-midatlantic - lists.vcfed.org

Re: Okuma Reader
by Jeffrey Golas 20 May '20

20 May '20

Interesting, so thats a slightly different design with mostly the same stuff. I’m working on mine and it seems to function with ~18v and 5v, but the motor control seems to be scatterbrained, sometimes it powers up stuck, other times it picks a direction and runs. I also notice only one led in the array is lit up, but since they seem to be in series im suspecting theyre all infrared. Just brought in the oscope to confirm signals. Attaching a pic of mine. Jeff > On May 19, 2020, at 8:11 PM, Duane Craps <duaneb.craps(a)cox.net> wrote: > > Jeff, > > Attached is Photos of my reader project. I can control it from the Arduino serial monitor or the front panel switches. The data scrolls into the serial monitor's input window, and I cut and paste it into a file. There is a similar unit on ebay that has a metal case vice the nice plastic on on my unit. Either it was an earlier model or someone made a replacement after the plastic one was broken. They were used in machine shops and the case looks home made.. > > MY notes: > > PIN 1-8 -- Bits 0-7 > > Pin 11 -- strobe > > pin 20 -- run > > Pin 13 -- reverse > > I put a mean well +24/+5 volt supply And A Teensy micro controler in the case. Thought it might have been too much to run the logic from the USB > > -- > Duane Craps > sdɐɹɔ ǝuɐnp > > <20180912_105647.jpg> > <20181012_115146.jpg>

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Re: Paper Tape readers from CNC machines
by Jeffrey Golas 19 May '20

19 May '20

Bill, let me know how you make out but it looks like Duane gave you the info on the Fanuc model. Duane I saw one of those cases on ebay and thought it was cool! If you have notes/info on the 2702 please pass them along, as its likely the same as the 2701. On the 2701, one side of the ribbon connector is almost completely ground, on the other side pins 1-5 appear to be control (possibly outputs like strobe), the next 8 pins are bits, the next 3 may be Fwd/reverse control, one after that is ground and not sure about the last 3-4. This is a 40 pin connector. Mine has a seperate screw terminal on the opposite side for power, although it may take 3 voltages, not sure. Motor is 12v but judging by the MASSIVE ceramic resistor it may be set up for 24v. Jeff

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Re: [vcf-midatlantic] Paper Tape readers from CNC machines
by Neil Cherry 18 May '20

18 May '20

Not yet, I have one but I haven't found the time to figure it out. -- Linux Home Automation Neil Cherry ncherry(a)linuxha.com http://www.linuxha.com/ Main site http://linuxha.blogspot.com/ My HA Blog Author of: Linux Smart Homes For Dummies

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Re: [vcf-midatlantic] Paper Tape readers from CNC machines
by Duane Craps 18 May '20

18 May '20

Jeff, The Fanuc unit I have is an old pinch roller unit with a 50 pin connector. It Uses +24 V0lts and +5 for logic 24 volts seems to be standard for machine tool servos. Pins 23-24 are +24 Volts 22-21 are +5 Volts Pins 1-8 are Bits 0-7 Pin 9 is the Data strobe I think pin 10 is the run/stop but It had a manual switch on the unit and used that I have pin 12 written as ground but am not sure as I jumpered to a capacitor on the board The control signal is high-active so it should take off running with the supplies energizes The other UNIT is an sanyo demki 2702 in an OKUMA case that had a round connector to plug into the machine tool. I put in power supplies and aTeency Arduino clont to convert it to USB It has a standard 44 pin edge connector on the logic board. It was on EBAY and I noticed that no one was bidding so I got it for $4.50 I have some pictures but I dont think the list allows. If you want the signals on the 2702 board let me know. Good luck. On 5/18/2020 12:44 PM, Jeff G via vcf-midatlantic wrote: -- Duane Craps sdɐɹɔ ǝuɐnp On 5/18/2020 12:44 PM, Jeff G via vcf-midatlantic wrote: -- DuaneCraps sdɐɹɔ ǝuɐnp

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Re: [vcf-midatlantic] Paper Tape readers from CNC machines
by Bill Degnan 18 May '20

18 May '20

Jeff, I have one coming to me in the mail today...FANUC A860 with a A20B-0004-0270 controller, so I am right there with you. I have found that what you need to dump tapes from one of these is a "behind the tape reader" (BTR) that attaches to the punch / OUT port of the reader. You can buy a used BTR compatible with the reader or create your own with an arduino. In my case the DOSTEK-440A appears to be the ticket, but there are others out there. New ones are pricey so I can see why people make them with Arduino's. Reader --> punch port--> BTR --> PC RS232 port. There are a few vendors out there but they're not too helpful to the vintage computing enthusiast IMHO....so I learned everything I needed to through a few hours of Google. DOSTEK is a program that runs on the PC that can manipulate tape images, but I am sure TeraTerm and a HEX editor would also work. Bill On Mon, May 18, 2020 at 12:45 PM Jeff G via vcf-midatlantic < vcf-midatlantic(a)lists.vcfed.org> wrote: > Hey all, some of you may have grabbed one (or more) of the paper tape > readers readily available on ebay that likely have come from CNC machines. > I was just wondering if anyone has actually made these work? > > It seems many of these have a standard pinout/spec depending on what CNC > controller they were connected to.I had one I bought some time ago, a > Sanyo-Denki 2401 model, and it seems this was often used on a Yasnac 2000G > controller, and has a 40pin ribbon cable connection, whereas others use a > 50pin ribbon cable (on Fanuc controllers). > > Just wondering if anyone has ever gotten one of these running, or perhaps > knows anything about them? I spent a couple hours with mine yesterday and > determined most of the pinout, but I don't know what voltages the power > input should be. > > I have a bunch of notes and the data side is relatively simple, its the > control side I'm struggling to sort out. > > Jeff aka Bags >

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Paper Tape readers from CNC machines
by Jeff G 18 May '20

18 May '20

Hey all, some of you may have grabbed one (or more) of the paper tape readers readily available on ebay that likely have come from CNC machines. I was just wondering if anyone has actually made these work? It seems many of these have a standard pinout/spec depending on what CNC controller they were connected to.I had one I bought some time ago, a Sanyo-Denki 2401 model, and it seems this was often used on a Yasnac 2000G controller, and has a 40pin ribbon cable connection, whereas others use a 50pin ribbon cable (on Fanuc controllers). Just wondering if anyone has ever gotten one of these running, or perhaps knows anything about them? I spent a couple hours with mine yesterday and determined most of the pinout, but I don't know what voltages the power input should be. I have a bunch of notes and the data side is relatively simple, its the control side I'm struggling to sort out. Jeff aka Bags

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OSI Floppy diagnostics
by David Gesswein 18 May '20

18 May '20

At the last workshop my machine was having problems with B drive and two other OSI machines people brought the floppy drives weren't working at all. I didn't find any floppy diagnostics for the OSI so I wrote on. http://www.pdp8online.com/osi/osi-floppy-test.shtml With some floppy testing info here http://www.pdp8online.com/osi/floppy-repair.shtml If you try it let me know how it goes. Bill got his machine working before I finished this. Jeff, hows your machine doing?

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Re: [vcf-midatlantic] LINC-EIGHT pictures
by Michael Thompson 17 May '20

17 May '20

> > > From: David Gesswein <djg(a)pdp8online.com> > Subject: [vcf-midatlantic] LINC-EIGHT pictures > Some pictures are here. > > http://www.pdp8online.com/linc-eight/linc-eight.shtml > > Nothing I have seen looks too bad but will still take a lot of time to > go through and get working. > The foam between the FlipChip handles keeps the air from the cooling fans flowing between the FlipChips. Our PDP-9 has the same. We had one flexprint cable to the front panel of the PDP-9 that looked like your flexprint cables. I replaced the cable with modern ribbon cable and it works fine. -- Michael Thompson

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OSI floppy diagnostics
by Crawford Griffith 17 May '20

17 May '20

David, First, congrats on the Linc-8, I look forward to helping you load it for VCFE if you ever decide to do that. Second, thanks for the OSI disk diagnostics. My 8” drives are giving me issues, and Bill Dromgoole has been coaching me via email on them. We both want to get our 8” drives working with a data separator (Klyball D-13). Bill got his working with a Gotek/Flashfloppy emulator also. Hope all is well with everyone, and you stay safe! -Cr

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LINC-EIGHT pictures
by David Gesswein 17 May '20

17 May '20

Some pictures are here. http://www.pdp8online.com/linc-eight/linc-eight.shtml Nothing I have seen looks too bad but will still take a lot of time to go through and get working.

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