What is MTP?
By now, we all know OPC UA is really good at supporting the use-cases for not only horizontal integration like machine to machine, but also vertical integration like device to cloud. Now, most recently, OPC UA is being applied to those industries considered to be process control or hybrid industries with factory automation. PROFIBUS & PROFINET International (PI) is leading the way with a technology called Module Type Package (MTP). For its runtime, MTP applies OPC UA information models to create standardized, non-proprietary, application level descriptions for process automation equipment; OPC UA Client/Server technology is used for communication. Offline engineering utilizes the AutomationML markup language. Rather than have every single I/O point controlled by one large distributed control system (DCS), MTP seeks to modularize the process into more manageable pieces. The point is to construct a plant with modular equipment to ease integration and allow for better flexibility should changes be required. With the help of a Process Orchestration Layer (POL), MTP-enabled equipment can “Plug & Operate” reducing the amount of time to commission a process or make changes to that process… pretty cutting-edge stuff.
The POL is the superordinate software into which an MTP file is imported. When an MTP file is imported into the POL, offline service engineering (orchestration) is performed along with communication configuration (OPC UA). Note: if recipe/batch engineering is applicable, MTP utilizes the ISA 88 standard here. The next step is an Orchestration Test (“Plug”) and then to begin (“Operate”). It is truly “Plug & Operate”.
Why should you care?
MTP files describe Equipment Assemblies. These are individual automated units providing the functionality to realize a step in a process. They have their own mechanical equipment, sensors, actuators, and controller. A great example would be skid integration. Here, an end-user can quickly integrate skids into their plant DCS to reduce engineering effort. The MTP file describing the skid is employed to shorten the time-to-market. According to ZVEI the benefits from first pilot projects can be summarized as follows:
At Hannover Messe 2023, PI is exhibiting a multi-vendor demonstration of MTP to show the power and capabilities of the technology. Keep an eye on this space over the coming months for more information.