1. Forum
  3. Search

Advanced Search

Search Results (Searched for: )

  • IronManDylan
  • IronManDylan
30 Dec 2024 00:04
Replied by IronManDylan on topic Fast Hole EDM from Hacked Parts

Fast Hole EDM from Hacked Parts

Category: General LinuxCNC Questions

Another update.  It seemed that I didn't have the Mesa tied to ground properly.  It is now tied to earth ground (I also tied the shielding into earth ground). The jittering all went away and now the 'hm2_7i96s.0.periodm.00.duty_cycle' is sitting at 0 even when the EDM is running.  Anyone have any ideas? 

Is 'hm2_7i96s.0.periodm.00.duty_cycle' the correct pin?
  • MarkoPolo
  • MarkoPolo
29 Dec 2024 22:07
Replied by MarkoPolo on topic qtvismach, a axis toolpath

qtvismach, a axis toolpath

Category: Qtvcp

I have tried various ways to use this code, but so far no results..
  • Cant do this anymore bye all
  • Cant do this anymore bye all's Avatar
29 Dec 2024 20:49
Replied by Cant do this anymore bye all on topic LinuxCNC 2.9.x hand wheel xhc-whb04b OFF/ON problem

LinuxCNC 2.9.x hand wheel xhc-whb04b OFF/ON problem

Category: Installing LinuxCNC

I stay away from USB pendants and the like.
  • Labiman
  • Labiman
29 Dec 2024 20:48
Replied by Labiman on topic stepper driven turret with index and home switch

stepper driven turret with index and home switch

Category: Turning

Did you find a solution to this problem? Having the same issue
 
  • Labiman
  • Labiman
29 Dec 2024 20:46
Replied by Labiman on topic stepper driven turret with index and home switch

stepper driven turret with index and home switch

Category: Turning

Did you find a solution to this problem? Having the same issue
  • Cant do this anymore bye all
  • Cant do this anymore bye all's Avatar
29 Dec 2024 20:45
Replied by Cant do this anymore bye all on topic LinuxCNC on Raspberry Pi 5

LinuxCNC on Raspberry Pi 5

Category: Installing LinuxCNC

Use the one Rod linked to on his google drive as it handles screen resolutions much much better.

With Linuxcnc is somethings works generally users stick with it. There is still many machines running earlier versions of Linuxcnc on Ubuntu 10 series.

Think of a machine running Linuxcnc the same as an ECU on a pre 2000's car or bike, if it works don't mess with it..........unless you're racing ;)
  • PCW
  • PCW's Avatar
29 Dec 2024 20:43
Replied by PCW on topic Raspberry Pi 4 with Mesa 7c81

Raspberry Pi 4 with Mesa 7c81

Category: Driver Boards

You can connect TTL level encoders directly to 7C81 I/O pins
_but_ I would at the minimum add say 220 Ohm resistors in series
with each signal to protect the inputs from negative input spikes.
(encoder signals tend to pick up motor drive noise so are fairly hard
on unprotected inputs)
  • PCW
  • PCW's Avatar
29 Dec 2024 20:38
Replied by PCW on topic 7i92t 7i77 problem

7i92t 7i77 problem

Category: General LinuxCNC Questions

Ha! should have asked about the encoder mode first...
  • Cant do this anymore bye all
  • Cant do this anymore bye all's Avatar
29 Dec 2024 20:38
Replied by Cant do this anymore bye all on topic Raspberry Pi 4 with Mesa 7c81

Raspberry Pi 4 with Mesa 7c81

Category: Driver Boards

I'll answer with experience of using Aliexpress Omron type encoders www.aliexpress.com/w/wholesale-omron-rotary-encoder.html , which are about less than a tenth of the price of the ones you mentioned, it's nice if you mention parts you can provide a link, saves time trying to search and ensures the correct component is being discussed.

With an optocoupler you will need to ensure the optocoupler is fast enough and the encoder can drive the optocoupler's led hard enough.

If the encoder is true TTL output or open collector output it should be fine.

Personally I've just used simple buffers, 74hc540/541, as I have a couple of tubes of them.

Another option would be to use the differential output of the encoder and connect that to a differential line receiver, such as www.futurlec.com/Linear/26LS32pr.shtml.

The schematics for the 7c81 are available, forum.linuxcnc.org/media/kunena/attachments/481/7c81sch.zip , one of the sheets shows the input circuitry.

No doubt Pete from Mesa will chime in.
  • aloOha
  • aloOha
29 Dec 2024 20:18
Replied by aloOha on topic Raspberry Pi 4 with Mesa 7c81

Raspberry Pi 4 with Mesa 7c81

Category: Driver Boards

Hello

I have a question about connecting the encoders in the set:

RPI4 + 7C81 + Mach5 3-axis board.

Since the 7c81 documentation says about a 5V tolerance (inputs), can I connect the encoders directly to the 7c81, or is it better to protect them with an optocoupler?

Will the encoders:
ROD426
ROD420
be suitable?

Thanks in regards, 
Michal
  • thomaseg
  • thomaseg
29 Dec 2024 20:08
EL5112: Change PDO assignments via LinuxCNC? was created by thomaseg

EL5112: Change PDO assignments via LinuxCNC?

Category: EtherCAT

Hi,

I've been struggling with getting an EL5112 encoder to work. I've spent most of the day battling this and i think i need some input/assistance.
The module is this one: www.beckhoff.com/da-dk/products/i-o/ethe...surement/el5112.html
The manual is here: download.beckhoff.com/download/Document/...rminals/el5112en.pdf

The module is an encoder ane it can run as either "1xABC" or "2xAB" encoder(s). I need it to run as "1xAB" encoder, not using the 2nd channel. However, its factory default set to "1xABC". If i look in the manual i find this regarding the "Predefined PDO assignment":
 
...and what i can gather from the manual is that i need to use 0x1A02 for input and 0x1602 for output. I've tried that with this configuration:
<slave idx="1" type="generic" vid="00000002" pid="13F83052" configPdos="true" name="ENC1">
  <syncManager idx="2" dir="out">
    <pdo idx="1602">
      <pdoEntry idx="7000" subIdx="02" bitLen="1" halPin="cmd-EnableLatchPosEdge" halType="bit"/>
      <pdoEntry idx="7000" subIdx="03" bitLen="1" halPin="cmd-SetCounter" halType="bit"/>
      <pdoEntry idx="7000" subIdx="04" bitLen="1" halPin="cmd-EnableLatchNegEdge" halType="bit"/>
      <pdoEntry idx="7000" subIdx="09" bitLen="1" halPin="cmd-SetSoftwareGate" halType="bit"/>
      <pdoEntry idx="7000" subIdx="0a" bitLen="1" halPin="cmd-SetCounterLatchPosEdge" halType="bit"/>
      <pdoEntry idx="7000" subIdx="0b" bitLen="1" halPin="cmd-SetCounterLatchNegEdge" halType="bit"/>
      <pdoEntry idx="7000" subIdx="11" bitLen="32" halPin="cmd-SetCounterValue" halType="s32"/>
    </pdo>
  </syncManager>
  <syncManager idx="3" dir="in">
    <pdo idx="1a02">
      <pdoEntry idx="6000" subIdx="02" bitLen="1" halPin="sta-LatchExtValid" halType="bit"/>
      <pdoEntry idx="6000" subIdx="03" bitLen="1" halPin="sta-SetCounterDone" halType="bit"/>
      <pdoEntry idx="6000" subIdx="04" bitLen="1" halPin="sta-CounterUnderflow" halType="bit"/>
      <pdoEntry idx="6000" subIdx="05" bitLen="1" halPin="sta-CounterOverflow" halType="bit"/>
      <pdoEntry idx="6000" subIdx="07" bitLen="1" halPin="sta-OpenCircuit" halType="bit"/>
      <pdoEntry idx="6000" subIdx="09" bitLen="1" halPin="sta-StatusInputA" halType="bit"/>
      <pdoEntry idx="6000" subIdx="0a" bitLen="1" halPin="sta-StatusInputB" halType="bit"/>
      <pdoEntry idx="6000" subIdx="0c" bitLen="1" halPin="sta-StatusInputGate" halType="bit"/>
      <pdoEntry idx="6002" subIdx="0d" bitLen="1" halPin="sta-Diag" halType="bit"/>
      <pdoEntry idx="6002" subIdx="0e" bitLen="1" halPin="sta-TxPDOState" halType="bit"/>
      <pdoEntry idx="6002" subIdx="0f" bitLen="2" halPin="sta-InputCycleCounter" halType="u32"/>
      <pdoEntry idx="6002" subIdx="11" bitLen="1" halPin="sta-SoftwareGateValid" halType="bit"/>
      <pdoEntry idx="6002" subIdx="15" bitLen="1" halPin="sta-CounterValueOutOfRange" halType="bit"/>
      <pdoEntry idx="6000" subIdx="11" bitLen="32" halPin="sta-CounterValue" halType="s32"/>
      <pdoEntry idx="6000" subIdx="12" bitLen="32" halPin="sta-LatchValue" halType="s32"/>
    </pdo>
  </syncManager>
</slave>
...and if i run a command to see the pdos i also get what i expect with regards to "0x1600/0x1a00" vs. "0x1602/0x1a02"(1xABC vs 2xAB):
$ ethercat pdos -p 1
SM0: PhysAddr 0x1000, DefaultSize  128, ControlRegister 0x26, Enable 1
SM1: PhysAddr 0x1100, DefaultSize  128, ControlRegister 0x22, Enable 1
SM2: PhysAddr 0x1200, DefaultSize    6, ControlRegister 0x24, Enable 1
  RxPDO 0x1602 "ENC RxPDO-Map Control Ch.1"
    PDO entry 0x0000:00,  1 bit, "Gap"
    PDO entry 0x7000:02,  1 bit, "Enable latch extern on positive edge"
    PDO entry 0x7000:03,  1 bit, "Set counter"
    PDO entry 0x7000:04,  1 bit, "Enable latch extern on negative edge"
    PDO entry 0x0000:00,  4 bit, "Gap"
    PDO entry 0x7000:09,  1 bit, "Set software gate"
    PDO entry 0x7000:0a,  1 bit, "Set counter on latch extern on positive edge"
    PDO entry 0x7000:0b,  1 bit, "Set counter on latch extern on negative edge"
    PDO entry 0x0000:00,  5 bit, "Gap"
    PDO entry 0x7000:11, 32 bit, "Set counter value"
SM3: PhysAddr 0x1300, DefaultSize   16, ControlRegister 0x20, Enable 1
  TxPDO 0x1a02 "ENC TxPDO-Map Status Ch.1"
    PDO entry 0x0000:00,  1 bit, "Gap"
    PDO entry 0x6000:02,  1 bit, "Latch extern valid"
    PDO entry 0x6000:03,  1 bit, "Set counter done"
    PDO entry 0x6000:04,  1 bit, "Counter underflow"
    PDO entry 0x6000:05,  1 bit, "Counter overflow"
    PDO entry 0x0000:00,  1 bit, "Gap"
    PDO entry 0x6000:07,  1 bit, "Open circuit"
    PDO entry 0x0000:00,  1 bit, "Gap"
    PDO entry 0x6000:09,  1 bit, "Status of input A"
    PDO entry 0x6000:0a,  1 bit, "Status of input B"
    PDO entry 0x0000:00,  1 bit, "Gap"
    PDO entry 0x6000:0c,  1 bit, "Status of input gate"
    PDO entry 0x6002:0d,  1 bit, "Diag"
    PDO entry 0x6002:0e,  1 bit, "TxPDO State"
    PDO entry 0x6002:0f,  2 bit, "Input cycle counter"
    PDO entry 0x6002:11,  1 bit, "Software gate valid"
    PDO entry 0x0000:00,  1 bit, "Gap"
    PDO entry 0x0000:00,  1 bit, "Gap"
    PDO entry 0x0000:00,  1 bit, "Gap"
    PDO entry 0x6002:15,  1 bit, "Counter value out of range"
    PDO entry 0x0000:00, 11 bit, "Gap"
    PDO entry 0x6000:11, 32 bit, "Counter value"
    PDO entry 0x6000:12, 32 bit, "Latch value"

...so far so good....but it ain't working:
$ ethercat slaves
 0  0:0   OP     +  EK1100 EtherCAT-Koppler (2A E-Bus)
 1  0:1   PREOP  E  EL5112 2K. Inc. Encoder 5V (2xAB oder 1xABC RS422,TTL)
 2  0:2   OP     +  EL3255 5K. Potentiometerauswertung mit Sensorversorgung
 3  0:3   OP     +  EL1008 8K. Dig. Eingang 24V, 3ms
 4  0:4   OP     +  EL1008 8K. Dig. Eingang 24V, 3ms
 5  0:5   OP     +  EL2024 4K. Dig. Ausgang 24V, 2A
 6  0:6   OP     +  EL1859 8K. Dig. Eingang 24V, 3ms, 8K. Dig. Ausgang 24V, 0.5A
 7  0:7   OP     +  EL1859 8K. Dig. Eingang 24V, 3ms, 8K. Dig. Ausgang 24V, 0.5A
 8  0:8   OP     +  EL1859 8K. Dig. Eingang 24V, 3ms, 8K. Dig. Ausgang 24V, 0.5A
 9  0:9   OP     +  EK1100 EtherCAT-Koppler (2A E-Bus)
10  0:10  OP     +  EL1018 8K. Dig. Eingang 24V, 10▒s
11  0:11  OP     +  EL1018 8K. Dig. Eingang 24V, 10▒s
12  0:12  OP     +  EL1008 8K. Dig. Eingang 24V, 3ms
13  0:13  OP     +  EL1008 8K. Dig. Eingang 24V, 3ms
14  0:14  OP     +  EL3052 2K. Ana. Eingang 4-20mA
15  0:15  OP     +  EL3052 2K. Ana. Eingang 4-20mA
16  0:16  OP     +  EL2024 4Ch. Dig. Output 24V, 2A
17  0:17  OP     +  EL2024 4Ch. Dig. Output 24V, 2A
18  0:18  OP     +  EL2024 4Ch. Dig. Output 24V, 2A
19  0:19  OP     +  EL2008 8K. Dig. Ausgang 24V, 0.5A
(note the "PREOP" at pos 1)

If i look at dmesg this is what i get:
$ sudo dmesg | egrep EtherCAT
[...cut...]
[ 5920.784378] EtherCAT 0: Starting EtherCAT-IDLE thread.
[ 5920.784441] EtherCAT ERROR 0-9: Failed to receive AL state datagram: Datagram initialized.
[ 5920.784470] EtherCAT 0: Releasing master...
[ 5920.784474] EtherCAT 0: Released.
[ 5920.969712] EtherCAT 0: Slave states on main device: PREOP.
[ 5921.481681] EtherCAT WARNING: Datagram 000000000caaf331 (master-fsm) was SKIPPED 1 time.
[ 5921.996024] EtherCAT: Requesting master 0...
[ 5921.996031] EtherCAT: Successfully requested master 0.
[ 5922.006960] EtherCAT 0: Domain0: Logical address 0x00000000, 388 byte, expected working counter 43.
[ 5922.006965] EtherCAT 0:   Datagram domain0-0-main: Logical offset 0x00000000, 388 byte, type LRW.
[ 5922.006988] EtherCAT 0: Master thread exited.
[ 5922.006991] EtherCAT 0: Starting EtherCAT-OP thread.
[ 5922.007052] EtherCAT WARNING 0: 9 datagrams UNMATCHED!
[ 5922.350569] EtherCAT ERROR 0-1: Failed to set SAFEOP state, slave refused state change (PREOP + ERROR).
[ 5922.351567] EtherCAT ERROR 0-1: AL status message 0x001E: "Invalid input configuration".
[ 5922.353905] EtherCAT 0-1: Acknowledged state PREOP.
[ 5922.821510] EtherCAT 0: Slave states on main device: PREOP, OP.
[ 5923.009501] EtherCAT WARNING 0: 8 datagrams UNMATCHED!

..."Invalid input configuration"... 

So my question is: Does this "PDO assignment" in TwinCAT do anything else behind the scene that i need to do in my setup aswell? I don't use/have TwinCAT anywhere and i actually don't have a PC that can run it in my workshop, otherwise i would have testet it. But i was hoping others have had similar issues, maybe with other devices that support multiple "modes"...

Have i missed anything obvious?

/Thomas
  • nick.smith
  • nick.smith
29 Dec 2024 19:38
Replied by nick.smith on topic Increase A axis speed, but maintain proper scale?

Increase A axis speed, but maintain proper scale?

Category: General LinuxCNC Questions

That looks like the ticket. Thank you very much.
  • PCW
  • PCW's Avatar
29 Dec 2024 19:11
Replied by PCW on topic Increase A axis speed, but maintain proper scale?

Increase A axis speed, but maintain proper scale?

Category: General LinuxCNC Questions

if you increase the joint velocity, you also need to increase the stepgen max velocity
(typically to 25% greater than the corresponding joint velocity).

If you don't do this, the actual position will lag the commanded position and you
will get a joint following error.
  • nick.smith
  • nick.smith
29 Dec 2024 18:34
Replied by nick.smith on topic Increase A axis speed, but maintain proper scale?

Increase A axis speed, but maintain proper scale?

Category: General LinuxCNC Questions

precious penguins

but actually pathpilot.

I have changed all the max_velocity values in tormach_mill_base.ini with no change in actual 4th axis speed.

I do get speed changes if I change max_velocity in 4th_axis.inc, but it will e-stop and give me a "joint 3" error.

Please advise.
  • RK
  • RK
29 Dec 2024 17:54
Replied by RK on topic 7i92t 7i77 problem

7i92t 7i77 problem

Category: General LinuxCNC Questions

PCW your a life saver!!
This project got shelved for a long time and I forgot about the jumpers. I see I only set the first axis. After setting the others I now have function. Thank you very much.
Displaying 20926 - 20940 out of 21848 results.
  1. Forum
  3. Search
Time to create page: 1.412 seconds
Powered by Kunena Forum