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:

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

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: 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

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

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.