mel_xu Posted May 24, 2022 Share Posted May 24, 2022 Hi, I am working on a communication between 2 Power Bricks LV-IMS Controller. If I am not wrong the Power Brick is set by default as as master. So, I bought a EtherCAT bridge EL6695 which permits communication between 2 EhterCAT masters and this module needs to be configure with TwinCAT. Currently, from Power PMAC IDE, I can activate the EtherCAT network and the two slaves in the EtherCAT bridge can be detected too but not the second Power Brick. Perhaps, does anyone already did this type of communication or does anyone know if it is possible to configure the Power Brick LV-IMS into a Slave ? (I found a document which says how to set Power PMAC as an EtherCAT Slave) Thank you in advance ! Regards Melissa Power PMAC as an EtherCAT.pdf Quote Link to comment Share on other sites More sharing options...
Eric Hotchkiss Posted May 24, 2022 Share Posted May 24, 2022 (edited) I am not familiar with this particular document, but it is about a option that is not currently released for most form factors called PMAC slave. I think of using a bridge to connect two PMAC networks as master to master communication. Here is an application note showing the setup and use of such a device. We have not tested this application note with the EL6695 and cannot comment on whether that would be acceptable hardware for this application. Connecting Multiple Power PMACs over EtherCAT.pdf Edited May 24, 2022 by Eric Hotchkiss PMAC Slave is an option, not a base feature. 1 Quote Link to comment Share on other sites More sharing options...
mel_xu Posted May 25, 2022 Author Share Posted May 25, 2022 13 hours ago, Eric Hotchkiss said: I am not familiar with this particular document, but it is about a option that is not currently released for most form factors called PMAC slave. I think of using a bridge to connect two PMAC networks as master to master communication. Here is an application note showing the setup and use of such a device. We have not tested this application note with the EL6695 and cannot comment on whether that would be acceptable hardware for this application. Connecting Multiple Power PMACs over EtherCAT.pdf 1.53 MB · 1 download Did you tried to connect two PMAC networks as master to master communication with another type of bridge ? Then, which one did you use ? Regards Quote Link to comment Share on other sites More sharing options...
Eric Hotchkiss Posted May 25, 2022 Share Posted May 25, 2022 I personally have only done master to master communication with the ECX-EC EtherCAT Bridge, by esd electronics. This is what is shown in the Application Note I posted. The EtherCAT settings are very generic. It should work for other devices, I just haven't had a chance to try them. Quote Link to comment Share on other sites More sharing options...
mel_xu Posted May 30, 2022 Author Share Posted May 30, 2022 On 5/25/2022 at 10:27 PM, Eric Hotchkiss said: I personally have only done master to master communication with the ECX-EC EtherCAT Bridge, by esd electronics. This is what is shown in the Application Note I posted. The EtherCAT settings are very generic. It should work for other devices, I just haven't had a chance to try them. The bridge ECX-EC should be configured first and can be configured with TwinCAT or esd workbench. I used TwinCAT for the EL6695 but it is no that easy to use it. Which one did you use in order to configure the bridge ? Do you have an application note for that ? Thank you ! Best regards Quote Link to comment Share on other sites More sharing options...
Eric Hotchkiss Posted June 1, 2022 Share Posted June 1, 2022 I took a new ECX-EC out of the box and set it up with only Power PMAC IDE 4. I did not use any other software. I believe the EL6695 would require setup in TwinCAT before following the EtherCAT slave setup from the app note. Quote Link to comment Share on other sites More sharing options...
mel_xu Posted June 1, 2022 Author Share Posted June 1, 2022 So, you directly did the mapping from Power PMAC IDE. Yes absolutely, that is why it was complicated with the EL6695. Not as simple as I thought. I have another question about the wiring of the second master. I know that the port eth1 is reserved for EtherCAT communication on Power Brick LV. But I'm not sure if the Ethernet cable should be plug in the Eth1 port of the second master as well. Quote Link to comment Share on other sites More sharing options...
Eric Hotchkiss Posted June 1, 2022 Share Posted June 1, 2022 You would want to use the ECAT port on both masters. It could be labeled ETH1 or ECAT. On the Power Brick ARM models, for example, the port is labeled "ETH1/ECAT". Quote Link to comment Share on other sites More sharing options...
mel_xu Posted June 2, 2022 Author Share Posted June 2, 2022 If I understand well, the wiring should be like this. The bridge are plug into both masters Eth1 port. But what if I want to add a 3rd Power Brick on my system ? Quote Link to comment Share on other sites More sharing options...
Eric Hotchkiss Posted June 3, 2022 Share Posted June 3, 2022 Two EtherCAT bridge devices can be used to connect three PMACs as shown below. I left out the computer connections on eth0. The EtherCAT port on PMAC is sometimes labeled ETH1 and Sometimes labeled ECAT. I have labeled it "ECAT M" for ECAT Master. Arrows pointing to nothing are to daisy chain extra EtherCAT devices. In this configuration, PMAC 1 must transfer data between PMAC 2 and PMAC 3. They do not talk directly. Once PMAC slave is available, it will be much easier to have multiple slaves together on the same network. Quote Link to comment Share on other sites More sharing options...
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