How do I control multiple motors using Elmo Gold drives through EtherCAT with cRIO 9039?

Hi,

I need to control multiple motors using Elmo drives through EtherCAT, the master is cRIO 9039, and now I can control the motor directly connected to cRIO 9039 by net cable(e.g. Address 0 in the first figure). But with the same procedure, the second and subsequent motors can't be controlled. The control method are just shown as the second figure. Does there any additional steps to drive multiple motors?

Thanks for your reply.

Eric