an interface information outputting system that maintains consistency between control parameter data set in a control information terminal by an operator and control parameter data set in an interface output section . in an embodiment , a control instructing section causes a status information generating and sending section to send its own id information signal and a status information signal indicating its own present operational conditions to the control information terminal via a communication line . in the event of an abnormal operational condition , the control information terminal resends the control parameter data to the control instructing section identified by the id information signal .