✅ (Solved) EL7342 | Working

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02 Sep 2021 07:31 - 08 Oct 2021 09:19 #219412 by juniorfi
Hello,

I'm trying to use and EL7342 and two yellow leds are on.
After having a look at the documentation I saw that is because is underpower or some missconfiguration.

- I assume that the configuration it have, is gone once I launch the master. Right? Or that still there in the eeprom?

- Does anyone have tried that EL7342 before?
- Do I have to declare the EL7342 configuration in .hal before launching the HAL/LinuxCNC?


Regards
Last edit: 08 Oct 2021 09:19 by juniorfi.

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02 Sep 2021 09:19 #219418 by db1981
Replied by db1981 on topic EL7342
Hello,

you have to tell the card its configuration. This are the values that are listet under the startup tab in the twincat projekt.
There are two ways:
-sdoconfig objects in the ethercat_conf.xml or
-loading an initcmd xml file for each card . You can snippout the initcmds for each card out of the device export xml in the twincat project.

about initcmds there is an example on the linuxcnc-ethercat github

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02 Sep 2021 09:34 #219421 by juniorfi
Replied by juniorfi on topic EL7342
Hello, Thanks for the reply.

I didn't know that I have to specify the configuration on the EL7342, good to know.

Regards

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07 Sep 2021 08:01 #219825 by juniorfi
Replied by juniorfi on topic EL7342
Hi,

Just trying to figure out about the .xml, if the project was made for TwinCAT 3 there is no a way to export that configuration, right?

I saw how to do in TwinCAT 2 but no for the version 3.

Regards

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07 Sep 2021 08:17 - 07 Sep 2021 08:18 #219828 by db1981
Replied by db1981 on topic EL7342
there is not much difference...

select the device in the left tree -> edit menü -> export xml description.

After this you got an xml file with the complete device description.
In this file there has to exist an chapter <EtherCATMailbox> within this there is an chapter <CoE> and there is the initcmd block. compare if the blocks looks like the example on linuxcnc-ethercat.

Be careful the initcmds blocks exists two times in the file. the first is for the systemmanager to automatical create the device (this is what etherlab/linuxcnc can't do..... spoiler: yet :-)   .) the second block near the end of the file contains the needed data.
Last edit: 07 Sep 2021 08:18 by db1981.
The following user(s) said Thank You: juniorfi

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07 Sep 2021 08:34 #219829 by juniorfi
Replied by juniorfi on topic EL7342
Thanks I will have a look at it and also to the FSOE config I have there in TwinCAT.

Regards.

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13 Sep 2021 09:26 #220417 by juniorfi
Replied by juniorfi on topic EL7342
Hi db1981,

I just tried to export the xml but I did in other way. (Not sure of I did well...)
I'm using Microsoft Visual Studio for the project I have for students.

Here goes from the part I took that info:
pasteboard.co/NtIVHFPEYVMf.png

And this is how the info looks like (I exported individually, but each of those have the same .xml value):

<?xml version="1.0" encoding="ISO-8859-1"?>
<EtherCATMailbox><CoE><InitCmds><InitCmd><Transition>IP</Transition><Timeout>0</Timeout><Ccs>1</Ccs><Index>61569</Index><SubIndex>1</SubIndex><Data>00001400</Data></InitCmd></InitCmds></CoE></EtherCATMailbox>


Could you just let me know if is that enough?.

Best regards.

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21 Sep 2021 07:13 #221250 by juniorfi
Replied by juniorfi on topic EL7342
Hi,


After adding my config in the ehtercat-conf.xml I got the following error when launching:

Note: Using POSIX non-realtime
rtapi_shmem_new failed due to shmget(key=0xacb572c7): Invalid argument
lcec_conf: ERROR: couldn't allocate user/RT shared memory
Waiting for component 'lcec' to become ready...

Any hint?

Regards

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21 Sep 2021 08:23 #221255 by db1981
Replied by db1981 on topic EL7342
hi,

you are trying to run linuxcnc in an sim environment not in realtime....

'Note: Using POSIX non-realtime

Have you configured and build linuxcnc for realtime?
Is the realtime kernel running on this machine 'uname -a' = preempt RT .

lcnc install:

/debian/ ./configure uspace
/src/ ./configure --with-realtime=uspace

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21 Sep 2021 10:29 - 21 Sep 2021 10:33 #221258 by juniorfi
Replied by juniorfi on topic EL7342
Hi thanks for the reply.

I'm actually using right now github.com/grotius-cnc/hal-core to interact with the pins without lcnc installation.

[Edit]
Yes I'm using Preempt RT. In concrete:
Linux linuxcnc 4.19.71-rt24-v7l+ #1 SMP PREEMPT RT Fri Jan 1 21:15:16 GMT 2021 armv7l GNU/Linux

 
Last edit: 21 Sep 2021 10:33 by juniorfi.

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