Automating Industrial Business Processes with Business Process Modeling Notation

Integrating systems and machines has been in industry for a long time. The next step, integrating human workers, can be made through business process modeling notation (BPMN)—enhancing quality, increasing data integrity, and improving maintenance.

In our previous blog we posed a broad question, where do operators fit with current manufacturing technology trends? More specifically, we asked:

What if we could map out each manufacturing process, execute that process in software and have it delegate tasks to operators to complete via a simple automated task list user interface on a mobile device?

The premise centers on how technology adoption can bring improvement in business process and foster the upskilling of people at the same time, all in the name of improvements in efficiency and implementing Industry 4.0.

Mapping out manufacturing processes and executing them in software
We’ve explained previously how business process modelling provides a solid framework for digital transformation of your business.

Business process modelling notation (BPMN) is a method used to set up a system to execute a process, assign tasks, and automate system integration based on a human readable design.

BPMN has been executing business processes for some time. Many of these processes have become second nature to us, for example, in financial sectors or human resources. The same principles can also be applied to industrial use cases, enhancing quality processes, increasing data integrity, or improving response times to maintenance issues to unlock efficiencies in new ways.

Integrating systems and machines has been possible for a long time but this approach is complex and costly when trying to exclude people from the process entirely. In many use cases, it’s simply not possible yet. Including people in the integration ensures operators fit with current manufacturing technology trends.

This is core to our approach in orchestrating machines, systems, and people by making use of BPMN mapping and execution in software. It allows us to automate a process inclusive of user tasks and provides a more gradual pathway towards lights-out manufacturing.

So, how do we orchestrate people? With an automated task list.

The BPMN 2.0 notation includes articulation of user tasks which allows us to push the right tasks to the right users and user groups at the right time during the execution of a business process.

Example 1: Finished goods put-away
Process map for put-away of finished goods for a food manufacturer.Process map for put-away of finished goods for a food manufacturer.Consider an example where we have a control system PLC controlling a finished goods conveyor. The control system can set a tag to invoke an instance of a BPMN process whenever a pallet has been finished. That process map can include a user task to collect and validate the pallet, and another to put the pallet away in a warehouse storage location.

For repetitive tasks, the solution enabled all testing to be documented during the commissioning process, producing a digital compliance report on completion.For repetitive tasks, the solution enabled all testing to be documented during the commissioning process, producing a digital compliance report on completion.These user tasks can be delegated to a forklift user group at the specific time they need to be performed. Users then work through their task list.

This approach can be used for other use cases like delivering raw materials to a production line or consuming raw materials against a production order.

Process map for testing of electronic motorway signage for a major freewayProcess map for testing of electronic motorway signage for a major freewayExample 2: Equipment testing process
Our sister company, SAGE Automation, delivered Intelligent Transport Systems (ITS) for a busy freeway in Melbourne, Australia. Commissioning required testing of every piece of equipment, including numerous speed signs and hazard signals, and documenting everything that was tested.

Using a solution developed by Nukon, ITS engineers could manage repetitive tests, documenting every step. As the commissioning stage has a defined series of steps, we were able to delegate tasks to operators (including third-party operators), escalate tasks to a supervisor if there was a failure and prove compliance to the client in one printed report.An example of the task list for users to work through as goods are completed.An example of the task list for users to work through as goods are completed.

Example 3: Picking and packing shipping containers
To demonstrate how far we can take this concept, consider the process of fulfilling a sales order by picking and packing a shipping container from a warehouse, booking shipping with logistics, unloading and loading containers on trucks, and preparing a container for packing.

This type of process can be highly complex and involves many user roles including logistics, sales, crane operators, and forklift operators. BPMN can orchestrate all these user roles, delegating user tasks at the right time in the process, as well as interfacing and orchestrating ERP systems for sales orders, and WMS systems for picking stock.

An example of the mapping of a highly complex process with different processes, multiple user roles and tasks.An example of the mapping of a highly complex process with different processes, multiple user roles and tasks.In summary
A change from no integration to full Industry 4.0 lights-out manufacturing is an enormous, complex, and costly undertaking for most businesses.

Including people in the technological advances allows for a more gradual, iterative approach that’s made possible by executing BPMN process maps in software and delegating tasks to users. As businesses grow and more technology becomes available more of those user tasks can be refined, simplified, and possibility fully automated.

In an upcoming article, we’ll explain how this same approach is highly intuitive for users and enables up-skilling users for more advanced Industry 4.0 roles.

Kim Fiddaman is a Senior Consultant at Nukon, a SAGE Group brand. SAGE is a certified member of the Control System Integrators Association (CSIA). For more information about SAGE, visit its profile on the Industrial Automation Exchange.

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