Abstract: The method and system for an industrial control system network jog control of the present invention provides responsive jogging of a machine for a consistent, fixed duration that minimizes the effects of network and processor delays. A jog message is input at a human machine interface by an operator directly observing the operation the machine. The jog message includes an address indicator corresponding to a network location of the controlled equipment and a jog duration period. The jog message is sent along the network directly to an output device attached to the controlled equipment. A jog pulse is then transmitted for the proper duration by the output device. Clock circuitry within the output device is used to limit the jog pulse to the jog pulse duration period of the jog message.

Abstract: A low profile shunt has an electrically insulated substrate with opposing electrical terminals joined to a sensing device by two electrically conductive layers. The conductive layers are laminated on each side of a shunt layer extending between the terminals. An insulating tape insulates the copper foil conductive and shunt layers from each other between the terminals. The sensing element is a measuring resistor having a resistive value many times greater than that of the shunt layer such that relatively low current measurements may by made at the sensing element.

Abstract: A compact programmable logic controller provides a floating mounting of circuit cards carried by opposed terminal blocks of the industrial controller the latter only which are directly mounted to the housing. Positioning of the cards between opposed connector blocks prevents torsion on the cards resulting from unbalanced forces on the terminal blocks and provides an extremely rigid structure.