This example assumes that an SIS module is open in Control Studio and has not been assigned to a Logic Solver.
If there are enough slots available on the corresponding controller, the module is assigned to the selected Logic Solver and a reference is created under its Assigned SIS Modules. The Logic Solver can have as many as four assigned SIS modules. An SIS module can only be assigned to a Logic Solver, and non-SIS modules cannot be assigned to a Logic Solver.