Keith and friends, Your quest got me looking at the FDD on my machine again. I originally thought the 3.5” drive was the problem as everything else worked after I had cleaned up all the contacts

Hello Marty ! I think you help me on centroid forum (but down since 1 week, I'm Gordon1234) It's 6 tools turret, of course. Attached files of my relay wiring, and turret files from Emco. It's optical

Hi JG, Some progress this afternoon. I tested the FDD with my bench PSU feeding the 5 Volts in past the now removed link. The FDD draws a standing current of 200mA and around 350mA when the disk is

Keith Ah, I was thinking you had sorted the 5v matter. I don't think you'll get anywhere till that is done ! The alarms are a big clue there I think. Sounds like the FDD controller was designed for

Hi JG, Thanks for the two attachments I'm sure they will be very useful. As far as soldering goes I would at one time have thought nothing of unsoldering a 40 pin chip with an iron and de-soldering

So I got a tip to tip then machine on its side (protect the hinge with some wood) and after that you can find some holes from the bottom side where you can access the screws. You needs to turn the

You don't have a 6 axis turret. You mean you have a 6 Tool turret? What sensors are on your turret? Pictures and descriprion please. It sounds like you are trying to use the 4bit gray logic truth

Hello guys ! I have a 6 axis turret on my emco pc turn 50, I follow emco pc turn 55 schematics (S14986-ACORN_rev4_EMCO_PC55_2_SENSOR_TURRET_LATHE_STANDARD_CONNECTIONS) and instructions file, but I

Hi, 4 years ago I made a clone of such a board, I can collect the same board for you, if it is relevant.

Hi All, I replaced the 6821 PIA this morning. As they are soldered in the only way to get them out without specialist soldering equipment is to cut the pins off and then remove the pins from the

Hi All, An update on the FDD. This afternoon I monitored the pins from the PIA on the CPU board by connecting my Chinese 8 channel logic analyser. First I loaded a CNC programme from the PC to the

Hi, I'm happy that other people likes the old electronics to. I can only confirm (I'm not a good programmer) that the soft is somewhat curious, sometimes you find highly good code and then really

Hi JG, Thanks for your reply. As you say the black box approach is probably best. I do have quite a lot of test gear but it doesn't seem to be getting me too far at the moment. I used a double beam

Keith I do have a snapshot from my EMCO spreadsheet detailing the PIO map for the Stepper Drive/Tape Drive Interfaces which may or not be useful to you as a start. The data is only for an F1 Mill

OOPS forgot the sketch. Keith

Hi, My machine stores 210 lines of G Code. I have the same ideas about vintage machines and prefer to get them working "as designed" if possible. I have two CNC lathes the Compact 5 and a Conect Cadet

Hi Keith, Also impossible to find a CPU diagram. I forgot it, you have already mentioned the "SAVING TO DISK", but I'm interested in your EMCO software version, do you have the possibility to readout

Hi Dieter, It isn't easy to get at the back of the lathe at the moment due to restricted space in my workshop. I assume that it is one of the later EPROMS as the instruction to save brings up the

Hi Keith, Which EPROM version is installed on your CPU and what is the highest possible CNC block number? (209 or 221) I can compare with my version and if they are identical the floppy controller

Good morning to everyone, My name is Carlos from Barcelona, and I am new user in this Emco Forum and It is a pleasure , I am owner of a EMCO PC MILL 155, and I have problem with this machine, the