Telemecanique

La Telemecanique Electrique

Rene Doucet

Jean-Francois Karcher

Bernard Aguilhon

Rene Desserrieres

Dominique Thillet

Arbitration between collisions is performed by means of a special arbitration path ARB conveying access requests expressed in the form of arbitration frames ARB %. An arbitration frame includes a priority field defining different classes of traffic, and a numerical field identifying each station, together with bits that relax priority constraints. The application of arbitration frames is subordinate to recognizing that a delimiter channel of the data path DATA is in an active state. The invention is applicable to industrial networks or buses.

Arbitration method and bus for serial data transmission

Process for transmitting data between entities capable of emitting

A terminal for generating programs usable by a programmable controller comprising: a screen; a keyboard having more especially a set of keys assigned to graphic symbols and a processor for generating, from the data entered on the keyboard, a program usable by the controller and storage thereof. The symbols of at least one contact type graphic representation mode and a sequential type representation mode are assigned to said graphic keys.

Processor generating control programs for a programmable controller

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Le Touvet, France

Rene Doucet