Books:

1. Popovic Bhatkar, "Distributed Computer control for Industrial Automation".
2. Gregory K. McMillan, Douglas M. Considine, "Process/industrial instruments and controls handbook".
3. Douglas M. Considine, Glenn D. Considine, "Standard Handbook of Industrial Automation".

Useful links:

1. https://www2.emersonprocess.com/en-US/brands/deltav