Hi There,
I am trying to get EL7041 Stepper Driver to work.

My environment:
Raspberry Pi MC
EK1100
EL7041, connected to Beckhoff Stepper Motor With Encoder
Codesys 3.5.7.10

Once I added the EL7041 1Ch Stepper Motor Rev24 with external Encoder, the EtherCAT bus stops working.

On the log I get the attached error. Are there an implementation step that I can follow? Supposedly this is a supported drive for Softmotion. Thanks.

P.S.
Prior adding the EL7401 I am able to do motion with EL7221 with no issue

does a scan on Ethercat master lead to a valid/same configuration, there are many firmware revisions out in EL7041.

Hi Edwin,
The one scanned only showed as a grey box and do not have SM_Drive on it. By itself it also does not have EtherCAT to scan. Do I need to connect to TwinCAT and change to certain configuration?

no, no twincat needed for 7041..but check the revision in the scan and plc log. Seems different device version, installed and real hardware

Hi Edwin,
So I did rescan again. This time I did the Device XML install from Beckhoff and find that it's now EtherCAT network is back working.

How do I make it such that Softmotion can use the drive?

More detail on hardware:
EL7041-0000 Revision 23

Current Process Data:
Used to be Velocity was checked, I change it to POS Control
All other still default

Saw on the EtherCAT I/O mapping that I am able to control with variables?

Hi Edwin,
Somehow I cannot edit the EtherCAT I/O mapping in the EL7041.

Any hint that you can give me on how to control the Stepper Driver?

Ideally working in Softmotion be best case. Thanks.

Hi Edwin,
Update on the troubleshooting.

Got EL7041-0000 Revision 23 working with the following Softmotion Driver

EL7041 1 Ch. Stepper motor output stage (50V, 5A) Rev22

Is it good to assume that the hardware revision need to be higher than software revision for Softmotion to work.

From initial testing looks like basic things like enable and basic motion (jog, move) seems to work.

hi,
great thanks for the feedback.