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It sounds like a large voltage spike (>25V) is being coupled into the encoder input.
I guess this could be a wiring error. I would disconnect the encoder connector at the 7I96S
and verify that there is no connection from any THCAD digital side pin to the
plasma source GND

Is the cable shielded? If so the shield should be terminated at 7I96S TB2 pin 9 (GND)

 

Hi everyone,

I am part of a research group here at Iowa State and we are using LinuxCNC to build a laser based directed energy deposition system. We have some Omron G5 R88D-KN01L-ECT drivers that a few other people have seemed to have gotten working on here and I was hoping you might be able to provide some input if this describes you.

Right now I'm just trying to get position exchange information in the HAL viewer for a single axis.

Thanks to the Ethercat installation from repositories - how to step by step , and EtherCAT: How to use the dedicated OmrG5 lcec driver? I think I have the XML setup correctly, as the driver is happy and displays "--" (preop, waiting, no error) until I launch LinuxCNC, which about 1-2s after the main UI loads the driver drops into the '90' error. This occurs regardless of if I have the drive configured as a "generic" device or if I use the OmrG5 driver. I've also tried changing the servo thread cycle time through all of the supported cycle times listed in the documentation (0.5, 1, 2, & 4ms) and no change in behavior.

I've also tried Beckhoff's Ethercat Configurator to make sure that the cycle time was set appropriately

I've attached a snippet of the documentation for the communications synchronization error. Any help/thoughts would be incredibly appreciated as I've been banging my head against this wall for a few days now. The XML, INI and HAL files have also been attached.

Thanks!
 

Hi PCW,

My connections are in twisted pair cables and are connected as follows:
 

From TB4 (200XT plasma system) to THCAD-300 to TB2 (7i96s)

Edit:
 
 

If in question about hardware pin, parameter names, type this
at a terminal when LinuxCNC is running:

halcmd show all hm2

or to save all the names in a file (as a copy_paste source) :

halcmd show all hm2 > hm2names.txt

5:

For faster normal encoders, here is firmware that adds 6 encoders on P1:

 




 

I would expect the THCAD300 to connect to the 7I96S TB2 pins:

7  A+
8  A-
9 GND
12 +5V
A+ and A- should be a twisted pair

Its also very important that none of those pins connect to _anything_
inside the plasma source.

Hello everyone.
I have an error with the reading of arc voltage (-45 V) after one piercing.
Before piercing I was reading 0 V.

My plasma source is AutoCut 200XT from Thermal Dynamics.
I am using a 7i96s mesa card with THCAD-300 also from mesa.
The interface I am using is QTPlasmaC.

The THCAD-300 is mounted inside of the plasma source connected directly to raw Arc Voltage.
The output from THCAD-300 is connected to the encoder from 7i96s (TB2.7 and TB2.8).

Already switch the THCAD-300 and 7i96s to brand new ones and at start the readings of arc voltage seems to be ok.
But when I put Torch On the Arc Voltage goes to -45 V, after that the value doesn't change. No matter if plasma is on or off.
If I look to halshow I get no readings at all in encoder counts signal.

Looks like for some reason that I cannot understand I am damaging the encoder input on the 7i96s board.
I've made the exactly same connections on Hypertherm Plasma Systems and works fine.


   

Did a little tweaking on the themes




JT

 Hello everyone. This is my first time posting here.
 I have a question about M6 Remap and Carousel on Lathe. System work Ok. In .ini file i have REMAP= M6  modalgroup=6  prolog=change_prolog ngc=toolchange epilog=change_epilog.
  If i want add ignore m6 (Remap=M6 python=ignore M6), i get an error that it Remap=M6 is already in use.
  If I want Remap=T (REMAP=T python=index_lathe_tool_with_wear), I have error "M6: no tool prepared" (message from stdglue.py file)
I can use these functions if the tool change is work on the ladder. But the carousel is a more convenient tool.
 Maybe someone knows how this works?

Using Fusion to generate the g code. LinuxCNC post processor.

1. yes, older Mesa cards
2. No
3. 7i96S does not need flashing, except when other non standard features are required, and does not need to load firmware from HDD, it has it's own memory for it, twice i think as there is a fallback in case of mishaps on almost all new-ish Mesa boards.
4. and 5. i am not sure, so i'll shut up!

Left everything on overnight and came back to it this morning. Thought maybe I did a pause rather than stop so fiddled a bit with the step, run, and stop buttons thinking stop might clear out things when pause would not. Not sure exactly what happened but it now doesn't give the error. Would be good to know why it happened and what to do to avoid the error or reset things if it happens again.

Hi,
i have answered your email. Checked both things listed above and had no success flashing new firmware

You can also try your luck with the somewhat dated 'bridgemill'
configs/sim/axis/vismach/5axis/bridgemill

Have a look at
configs/sim/axis/vismach/5axis/table-rotary_spindle-rotary-nutating

Set the nutation angle to 90° and ignore the table rotary.

 

Hello,
How should I add RTCP feature to a 5-axis machine with the same joints as the machine in the video?