Figure 2. The ISA112 SCADA model architecture diagram is a functional diagram outlining how most SCADA systems are structured, and how this relates to other architectural models. The committee’s first ...

The primary security separation issue in a SCADA system architecture is that remote access from an MTU to a given RTU must be properly mediated according to a strong access control policy.

The ISA112, SCADA Systems, standards committee is developing a comprehensive ... ISA112 has now released interim drafts of its SCADA life-cycle diagram and reference model architecture as it moves ...