Ethercat random jitter fix

Please share zipped configuration folder, or whatever you are willing to share to shed light on the issue.

Hello,I am updating my test environment to the latest software version.I noticed that the noise issues occur roughly every 36 seconds. 

Attached is the Halscope log.

This is more likely due to a Linux service firing regularly rather than being ethercat related.
What Operating system and kernel version.
What steps have you taken to tune your kernel?
 

Actually, it could be a regular wifi scan. Try this to disable it and report back. Add this text and save
then type

Hallo rodw,

the board is an Orange Pi 5 Plus without Wi-Fi.
kernel: Linux orangepi5-plus 6.12.0-rc7-edge-rockchip-rk3588 #5 SMP PREEMPT_RT
ethercat: IgH EtherCAT master 1.6.9 1.6.9-93-g4f9aa6f3
LINUXCNC - 2.10.0~pre1servo controller: 3 x Bosch-Rexroth HCS01.1EW0009-A-02-B-ET-CE-CE-L3

<master idx="0" appTimePeriod="1000000" syncToRefClock="true">
   The setting results in the described error.

<master idx="0" appTimePeriod="1000000" syncToRefClock="false">
   The setting results in the described error.

<master idx="0" appTimePeriod="1000000" refClockSyncCycles="1">
   With these settings, the function works as intended.

Gruß
      Rüdiger

You did not give linuxcnc-ethercat version


github.com/linuxcnc-ethercat/ethercat/releases
github.com/linuxcnc-ethercat/linuxcnc-ethercat/releases

I made arm64 debs as well...

syncToRefClock="false" without a refClockSyncCycles means free mode, don't use with axis.

syncToRefClock is going away because it is confusing, use refClockSyncCycles=-1 if you want to test having the pi sync to the clock on the drives, in your case it does not seem to work, should be same as syncToRefClock="true" but test with latest version.

refClockSyncCycles="1" if your latency is decent is a good choice.

Hallo,

the linuxcnc-ethercat version is : linuxcnc-ethercat (1.42.2-1)

Gruß
Rüdiger

1.44.0 is the latest version, also ethercat don't get from IGH, please uninstall IGH ethercat, and install the one from here instead

github.com/linuxcnc-ethercat/ethercat/releases

your devices will OP much quicker.

grandixximo wrote:

1.44.0 is the latest version, also ethercat don't get from IGH, please uninstall IGH ethercat, and install the one from here instead

github.com/linuxcnc-ethercat/ethercat/releases

your devices will OP much quicker.

also note this new version needs an additional command in hal
lcec.activate