Abstract: A machine segment in an industrial control system, comprising (1) a control system comprising at least a logic controller and safety controller; (2) safety components; (3) motors; and (4) input/output devices. In particular embodiments: (1) the control system is in network communication with a neighboring machine segment via a first network connection; (2) the safety controller is in network communication with a neighboring machine segment safety controller via a second network connection; (3) the logic controller receives input/output data from the input/output devices and transmit it directly to the neighboring machine segment; (4) the logic controller receives second input/output data from the neighboring machine segment; (5) the logic controller receives identifying data for the neighboring machine segment; and (6) the logic controller controls operation of each of the motors based on one or more of the input/output data, the second input/output data, or the identifying data.

Abstract: A retractable cord for mobile phones or other wireless devices. The cord includes an ear piece having a speaker for delivering sound to a user and possibly having a microphone. The retractable cord can be contained within a separate unit with a connector for attachment to a connector on the mobile phone or other wireless device, such as a jack or other receptacle, or it can be contained internally within those devices. The cord can retract onto a spring-loaded spool, or via other retractable mechanisms, and be held at various extended positions with a stop mechanism that prevents retraction of the cord.

Abstract: A retractable cord for mobile phones or other wireless devices. The cord includes an ear piece having a speaker for delivering sound to a user and possibly having a microphone. The retractable cord can be contained within a separate unit with a connector for attachment to a connector on the mobile phone or other wireless device, such as a jack or other receptacle, or it can be contained internally within those devices. The cord can retract onto a spring-loaded spool, or via other retractable mechanisms, and be held at various extended positions with a stop mechanism that prevents retraction of the cord.