A method for operating a communications system is provided. A loop is provided to serve as a common loop channel having fiber channel interfaces. Such convertible messages can be sent using a communication means having two or more fields, ports, or the like. The plurality of locking projections are configured to be received in the plurality of guide grooves and moved in the plurality of guide grooves between an insertion section of the groove and a locking section of the groove in response to relative rotation between the planar member and the support member about the axis of rotation.