PXI

cancel
Showing results for 
Search instead for 
Did you mean: 

PXI with EtherCAT Motor control and FPGA

Solved!
Go to solution

Hello together,

 

I own a PXI 1078 connected to a EtherCAT Expansion Chassis NI 9145. The expansion chassis will be used to implement FPGA I/O. At the same time, we want to control a Kollmorgen AKD drive.

My question is: if I put the ethercat expansion chassis in FPGA mode, how are the data transmitted to & back to the PXI? Can I still communicate with the motor drive or does the whole system have to be in Scan mode?

 

Best regards,

Lysandros



0 Kudos
Message 1 of 4
(1,890 Views)

Hello Lysandros89

 

it depends on your implementation

Programming the FPGA on an NI EtherCAT Expansion Chassis

Programming EtherCAT I/O With FPGA Intelligence

A simple way are user defined variables on the FPGA and use the EhterCAT implementation in parallel with this.

best regards
Alexander
0 Kudos
Message 2 of 4
(1,848 Views)

Hello Alexander,

 

thanks for the links and the advice. I am realizing that by using the Ethercat bus, I am loosing the advantage of the backpane synchronization which is offered with PXI. Would you recommend adding I/O and FPGA cards into the PXI 1078 and running everything there instead of going with remote expansion chassis like the NI-9145?

 

Best regards

Lysandros



0 Kudos
Message 3 of 4
(1,838 Views)
Solution
Accepted by topic author Lysandros

Hello Lysandros89,

 

if this is possible yes, because of better performance an access to the I/Os.

 
best regards
Alexander
0 Kudos
Message 4 of 4
(1,830 Views)