In my experience, no one provides better documentation than Huffman Engineering. I’ve provided control system design upgrades for numerous facilities where Huffman Engineering has provided comprehensive documentation. Huffman’s documentation typically includes everything from high level network communication diagrams, annotated PLC logic, equipment manuals, and detailed wiring diagrams. Not only were the documents a real asset to the Facility Owners, but the documents really helped me as the design engineer to be efficient in design and to provide accurate upgrade design documents.