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spincycle
spincycle

22 May 2025 08:30

Replied by spincycle on topic Bridgeport VMC760 retrofit

Bridgeport VMC760 retrofit

Category: Milling Machines

Howdy!

I've made some progress the last couple of days with the retrofit. Mainly around the control panel design.

I received a secondhand 27" ELO touchscreen in the post, which I got for an absolute steal. Yet to power it up, but it was sold as functioning and the drivers work on linux. The new control panel is based around this screen and the gmoccapy gui, with a handful on hardware controls I've deemed necessary from the Heidenhain. I'd also like the panel to rotate around to aid interaction while standing in front of the bed/doors. I've orientated the screen vertical, as it's bloody huge.

Attached are some screen grabs of the CAD model. It's designed to take the MX Cherry style switches. Looks like a few of you have used them and I'm a sucker for a "clicky" button. One MPG, e-stop, usb jack, all the usual suspects etc. Control enclosure is to be fabricated from 80x25x3mm aluminium channel for the perimeter frame and cnc routed 3mm sheet for the front and rear panels. I'll glue this together with the TIG and send it out with the next client job batch for powder.

I also received a Delta 11kw VFD. Again, it was removed from a working machine and was considerably better value than a new one. Dug out a Omron encoder that was leftover from another project that never saw life. Planning to use this on the spindle.

Cheers,

J

spincycle
spincycle

22 May 2025 08:05

Replied by spincycle on topic Bridgeport VMC760 retrofit

Bridgeport VMC760 retrofit

Category: Milling Machines

RotarySMP wrote:
Yes, the RS-422 is their smart serial connection between the 7i97T FPGA main board and 7i73 and 7i84 daughter boards. Since there is only one RS-422 configured standard on the 7i97T (on TB4), you can only connect one of those two cards, until you reflash the 7i97T to reconfigure some of the pins of the P2 expansion port to provide a second RS-422.

Glad you are enjoying my videos. It is fun to dick around with this stuff
Cheers,
Mark

Thanks for the clarification Mark.
Apologies on the slow reply, I've had an internet detox the last week!

spincycle
spincycle

22 May 2025 08:03

Replied by spincycle on topic Bridgeport VMC760 retrofit

Bridgeport VMC760 retrofit

Category: Milling Machines

Do you need all new drives?

I thought only one broke.

Sorry Langdons, I've been away the last week and decided to take a breather from the internet.

By the looks of it yes, just one. However, given the likelihood of another dying in the future, I'd rather replace the whole bunch. The quotes to repair them are sky high and secondhand ones are almost as bad.

MTate01
MTate01

22 May 2025 06:17

Replied by MTate01 on topic RTelligent EtherCAT Servo Drive Setup: RS750E

RTelligent EtherCAT Servo Drive Setup: RS750E

Category: EtherCAT

hi Hakan,

Thanks for the recommendation to move to cia402 - the drive runs and i can at least move the motor! I feel like I might have taken some weird workarounds trying to chase linuxcnc compile errors, so I probably need to touch on whether these are "acceptable" - perhaps you can comment on the below?
ethercat-conf_n.xml:

<masters>
 <master idx="0" appTimePeriod="1000000" refClockSyncCycles="1000">
  <slave idx="0" type="generic" vid="00000A88" pid="0a880013" configPdos="true">
   <!-- Joint 0 -->
   <syncManager idx="0" dir="out"> </syncManager>
   <syncManager idx="1" dir="out"> </syncManager>
   <syncManager idx="2" dir="out">
    <pdo idx="1600">
     <pdoEntry idx="6040" subIdx="00" bitLen="16" halPin="cia-controlword" halType="u32"/>
     <pdoEntry idx="607a" subIdx="00" bitLen="32" halPin="target-position" halType="s32"/>
     <pdoEntry idx="60b8" subIdx="00" bitLen="16" halPin="touchprobefunction0" halType="bit"/>
    </pdo>
    <pdo idx="1601">
     <pdoEntry idx="6081" subIdx="00" bitLen="32" halPin="profile-velocity" halType="u32"/>
     <pdoEntry idx="6083" subIdx="00" bitLen="32" halPin="target-accel" halType="u32"/>
     <pdoEntry idx="6084" subIdx="00" bitLen="32" halPin="target-decel" halType="u32"/>
     <pdoEntry idx="6060" subIdx="00" bitLen="8" halPin="opmode" halType="s32"/>
    </pdo>
    <pdo idx="1602">
     <pdoEntry idx="60ff" subIdx="00" bitLen="32" halPin="target-velocity" halType="s32"/>
    </pdo>
   </syncManager>
   <syncManager idx="3" dir="in">
    <pdo idx="1a00">
     <pdoEntry idx="603f" subIdx="00" bitLen="16" halPin="errorcode" halType="bit"/>
     <pdoEntry idx="6041" subIdx="00" bitLen="16" halPin="cia-statusword" halType="u32"/>
     <pdoEntry idx="6061" subIdx="00" bitLen="8" halPin="opmode-display" halType="s32"/>
     <pdoEntry idx="6064" subIdx="00" bitLen="32" halPin="actual-position" halType="s32"/>
     <pdoEntry idx="60b9" subIdx="00" bitLen="16" halPin="touchprobestat" halType="bit"/>
     <pdoEntry idx="60ba" subIdx="00" bitLen="32" halPin="touchprobe1pos" halType="s32"/>
     <pdoEntry idx="60fd" subIdx="00" bitLen="32" halPin="digitalinputs" halType="s32"/>
    </pdo>
    <pdo idx="1a01">
     <pdoEntry idx="606c" subIdx="00" bitLen="32" halPin="actual-velocity" halType="s32"/>
    </pdo>
   </syncManager>
   <dcConf assignActivate="300" sync0Cycle="1000000"/>
  </slave>
 </master>
</masters>

and ethercat.hal:

loadusr -W lcec_conf ethercat-conf_n.xml

loadrt lcec
loadrt cia402 count=1
loadrt pid names=x-pid

##########################################

addf lcec.read-all servo-thread
addf cia402.0.read-all servo-thread

#addf motion-command-handler servo-thread
#addf motion-controller servo-thread

addf x-pid.do-pid-calcs servo-thread

addf cia402.0.write-all servo-thread
addf lcec.write-all servo-thread


#######################################

#net emc-enable => iocontrol.0.emc-enable-in
#sets emc-enable 1

setp cia402.0.csp-mode 1
setp cia402.0.pos-scale 3600000000

#from servo to cia402:
net x-statusword     lcec.0.0.cia-statusword     => cia402.0.statusword
net x-opmode-display lcec.0.0.opmode-display     => cia402.0.opmode-display
net x-drv-act-pos    lcec.0.0.actual-position    => cia402.0.drv-actual-position
net x-drv-act-velo   lcec.0.0.actual-velocity    => cia402.0.drv-actual-velocity

#from cia402 to servo
net x-controlword        cia402.0.controlword         => lcec.0.0.cia-controlword
net x-modes-of-operation cia402.0.opmode              => lcec.0.0.opmode
net x-drv-target-pos     cia402.0.drv-target-position => lcec.0.0.target-position
net x-drv-target-velo    cia402.0.drv-target-velocity => lcec.0.0.target-velocity

net Xpos => cia402.0.pos-cmd
#net x-pos-fb => joint.0.motor-pos-fb <= cia402.0.pos-fb

#from motion to cia
net x-enable    <= joint.0.amp-enable-out => cia402.0.enable
#net x-pos-cmd   <= joint.0.motor-pos-cmd  => cia402.0.pos-cmd

#from cia to motion
#net x-amp-fault => joint.0.amp-fault-in   <= cia402.0.drv-fault
#net x-pos-fb    => joint.0.motor-pos-fb   <= cia402.0.pos-fb

#homing
net x-home-index <= joint.0.index-enable  => cia402.0.home

note with the above: I had to comment out quite a few lines to avoid having to go "deeper" into ini files to remove errors from occuring... one such example was with the cia402.0.motor-pos-fb and cmd, I had errors stating that they were already linked to Xpos - so I just "reassigned" them. basically any line in the above that is commented out is just due to an error. definitely also need to uncomment the fault reporting...

next step for me is to set up a physical axis where I can test homing and rotation distance of a ball screw etc. and get an IO board working