Allen-bradley Company, LLC

Jeffrey W Brooks

Charles Martin Rischar

Ronald Edwin Schultz

Otomar S Schmidt

Richard S Gunsaulus

Mohammad S Khan

Amir S Ansari

A decompiler works with a compiler for an industrial controller having a user modifiable instruction table to contain code fragments necessary to compile particular instructions. During compilation, the instructions are replaced with the code fragments. Thus new instructions recognizable by the compiler may be added simply by editing this instruction table. The decompiler identifies a portion of the compiled new instructions by reference to the same instruction table used by the compiler thus maintaining compatibility with the compiler.

Industrial controller decompiler accommodating an expandable instruction

A co-processor interface allows both a general processor and a relay ladder processor to make repeated calls to each other in the execution of subroutines. A register transfer instruction detected by the relay ladder processor triggers a suspension of the general processor. Return of control to the general processor is accomplished at the same time a register value is provided to the general processor that the general processor uses to reinitialize its program counter. For most single level transfers of control, a single transition instruction between the general processor to the relay ladder processor is sufficient to perform a call.

Bi-directional co-processor interface

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Mentor-On-The-Lake, OH, United States of America

Jeffrey W Brooks