Semantic Designs

Dow Chemical renews its annual support contract with Semantic Designs for the 10th year running. SD is providing custom services to continuously enhance its Sequoia reverse engineering tool, that reads Dowtran 1970s legacy factory process control programs, and automatically extracts process-control models from the code. This model is then used to generate controller code for modern controllers. Dow has replaced the legacy controllers/code on several hundred Dow factories, and expects to continue doing this for another 5-10 years.