[UMAC Macro problem]

This is not something common.

 

Where do you see fluctuations in feedback?

 

What is the MACRO hardware is at the other end?

 

Typically you would follow the register map back to the source of the feedback to identify where the issue begins (controller ECT, controller MACRO node, MACRO station node, MACRO station ECT, MACRO station feedback hardware register).

 

What were the sent configuration files intended to show? They were done with different upload schemes (multi-file vs single file) so there is no easy way to compare them.

 

Thanks for the reply. The configuration is like this:

[UMAC Macro problem]

 

Hello Sina,

 

We have very similar symptoms and major issues at the Australian Synchrotron. There have been a long history of "changed positions" and "unwanted motions" across two different beamlines which use the same setting. I now think, these are most likely due to corrupt raw encoder readbacks from a MACRO ring.

 

Two MACRO rings are setup, each with a "Turbo PMAC2 PCI Ultralite" card (on the same PC). MicroMech stations are each connected to 2x16 MicroMech stepper drivers.

 

In one instance I have recorded 4 encoder counts changed at the same time, two of them exactly doubled. This happened while I was uploading a backup from the Ultralite.

 

I am attaching a backup I got minutes before this happened (1514), and the second backup which with the jumps happened while it was being uploaded (1517).

 

Are these symptoms common? Any information helping us with diagnostics is very much appreciated.

 

Best regards,

Nader Afshar

SR05ID01IOC01_pmac1_2016-03-02-1517.zip

SR05ID01IOC01_pmac1_2016-03-02-1514.zip