Abstract: A fastener assembly includes various features that work in conjunction to compress one structure against another structure thereby detachably coupling the structures together. The features may include one or more of a stud, a lever, a body, a fastener, etc. Some of these features may be pivotable, rotatable, etc. between positions to assist in coupling the structures together. Other example fastener assemblies and systems including one or more fastener assemblies are also disclosed.

Abstract: An industrial controller performance monitoring system includes a detector connected to a controller. The detector is optically coupled to an output, such as a display, of equipment under test and the controller is configured to receive a signal from the equipment under test that is indicative of an instruction to generate the signal monitored by the detector. A comparison of the detection of the signal with the instruction to generate the signal provides an indication of operation of the equipment under test without interfering with operation of the equipment under test.

Abstract: An industrial controller performance monitoring system includes a detector connected to a controller. The detector is optically coupled to an output, such as a display, of equipment under test and the controller is configured to receive a signal from the equipment under test that is indicative of an instruction to generate the signal monitored by the detector. A comparison of the detection of the signal with the instruction to generate the signal provides an indication of operation of the equipment under test without interfering with operation of the equipment under test.