Appendix A. Protocol Resources
Information in this Chapter:
• Common Industrial Protocol/ODVA
While industrial network protocols were covered at a high level in
Chapter 4, “Industrial Network Protocols”, fully understanding how these protocols work will facilitate the assessment and security of industrial networks. The following organizations provide in-depth documentation and support for the four leading industrial network protocols: Modbus, Distributed Network Protocol (DNP3), OPC, and Common Industrial Protocol (CIP).
Modbus Organization
• The Modbus Organization is a group consisting of independent users and automation device manufacturers who manage the development and use of the Modbus protocols. ...