Control Engineering - December 01, 1998
Cover Story
PCs Power Programming Tools
In the past, programmable logic controllers (PLCs) were programmed with proprietary software in relay ladder logic. Screen navigation was with function keys. Almost no way existed to reuse the program from one machine to the next. For some issues from a user's viewpoint see the sidebar from General Motors Power Train.
In the past, programmable logic controllers (PLCs) were programmed with proprietary software in relay ladder logic. Screen navigation was with function keys. Almost no way existed to reuse the program from one machine to the next. For some issues from a user's viewpoint see the sidebar from General Motors Power Train.
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