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AssigneeAllen-Bradley Company, Inc.
InventorsDavid A. DiCarlo, William E. Floro, Mike Keith, John J. Baier, Jeffrey H. Campau, Daniel P. Noonen, Stuart B. Siegel
Estimating the term…
Data is exchanged between two modules of a programmable controller by originator module writing the information in an interface memory in one of the modules and the recipient module reading the information from the memory. An initialization procedure is performed before any information is exchanged in that manner. The module containing the memory writes the size of the memory for reading by the other module. Sets of test data are stored in the memory by each module and checked by the other module to determine if data can be passed accurately between the modules in both directions. Then data identifying the type of one of the modules is exchanged to insure that the other module knows the type of module with which it is dealing.
A programmable controller having a processor module and a functional module in which one of said modules includes a memory that is accessible by both said modules and through which information is exchanged by one module storing said information in said memory and said other module reading said information from said memory, said programmable controller further comprising a mechanism for initializing said exchange of information comprising:
A method of initializing a data interface between a processor module and a functional module of a programmable controller in which data is exchanged by one module writing said data in a commonly accessible memory in one of said modules that then is read by said other module, said steps of said method comprising:
Dependencies are inferred from the claim text.