RecurDyn/Control has two modes to co-simulate RecurDyn with Simulink.
•One mode is that RecurDyn is a host program.
•The other is that Slimulink is a host program.
A control system designer wants Simulink which is a host program, but a dynamic system designer wants RecurDyn which is a host program.
Figure 1 Simulink icon of the Control group in the Communicator tab