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| Number | Title | Issue Date |
| 5613115 | Method for using PLC programming information to generate secondary functions such as diagnostics and operator interface A programmable logic controller (PLC) in an operating system such as a machine includes a software development tool having labels in a first field to identify and describe specific input/output (I/O) points in the PLC. Each label assignment can be used in... | 03/18/1997 |
