EtherCAT master xml file for Yaskawa Sigma Servo motor?

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19 Dec 2025 06:25 #340299 by tar_san
I'm trying to use Yaskawa sigma servo(EtherCAT) for LinuxCNC.

But my trial does not work.
I get Alarm A12 (EtherCAT Output Syncronization Error)

Does anyone know good example master settings ?

my trial 

ini
loadusr -W lcec_conf ethercat-conf.xml

ethercat-conf.xml

<masters>
  <master idx="0" appTimePeriod="1000000" refClockSyncCycles="1">

    <slave idx="0" type="generic" vid="00000539" pid="02200901" configPdos="true">
      <dcConf assignActivate="300" sync0Cycle="*1" sync0Shift="0"/>     

      <sdoConfig idx="2701" subIdx="02" ><sdoDataRaw data="00 00 00 04" /></sdoConfig> 


<< ERROR.
LCEC: slave 0.0: Failed to execute SDO download( 0x2701:0x02, size4, bite0=0, error -5, abort_code 00000000)

...


 

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19 Dec 2025 09:36 #340300 by Hakan
I think you know this already, but you have the output of "sudo dmesg" with the last lines being relevant.

In this case, do the following commands work "ethercat -p 0 upload 0x2701 2" and "ethercat -p 0 download 0x2701 2 1"?
You are aware that bytes in sdoDataRaw are LSBF so your number "00 00 00 40" is 67108864?
 

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