Introduction to S95
Some of you may have noticed that we provide a couple of pretty heavy tutorials for S88, but we’re just providing an “introduction” to S95. This is because:
- S88 is for automation superstars; S95 is for IT weenies.
- Our wives threatened to meet us at our respective courthouses, if we put as much time into the S95 part of our site that we put into the S88 part.
- This site is about batch control, not enterprise-control integration. While S95 certainly applies to batch control, its scope goes far beyond batch control.
Well, the last bullet is much more relevant than the first two.
Ahem, moving on
ANSI/ISA-95 is a multi-part, international standard for the integration of enterprise and control systems. Let’s first look at the classic S95 control hierarchy, as shown in Figure 1.
Figure 1: S95 Control Hierarchy Levels
To put a more practical spin on this, especially in terms of what applications or functions occur at each level, take a look at Figure 2.
Figure 2: S95 Levels with Applications
Figure 2 shows example applications or functions for each level, but others can exist. For example, Level 4 can also have applications like supply chain management (SCM) or customer relationship management (CRM). Level 3 can also contain applications such as laboratory information management systems (LIMS). Levels 1 and 2 contain your classic control systems, and Level 0 is the physical equipment.
Currently, S95 has three parts. Parts 1 and 2 provide a formal model for exchanged data between business systems and manufacturing systems. In other words, Parts 1 and 2 deal with the interface between S95 Levels 3 and 4. The concept of this is shown graphically by Figure 3.
Figure 3: Information Exchange Between Levels 3 & 4
Part 3 provides a definition of Manufacturing Operations Management, or the detail in S95 Level 3. These are the activities on the shop floor that take production schedules and perform the actual work required to manufacture products and provide visibility of production. Graphically, this is shown in Figure 4.
Figure 4: Manufacturing Operations Functions
learning more about S95
Check out some of our quick links near the top right of this section for more information on S95. Also, feel free to browse some of the magazine articles that we list.