I/O Model

System

The I/O Model tree represents the physical infrastructure of the system and the System object is the top object in the tree. The System object contains all the properties for connection to the Mongo DB repository, including security setting.

Core

The Core is the central component of the system. It establishes connections to multiple Connector services to collect data from various different data sources. The Core processes the data, storing all information in the Repository

Connector

The Connector forms the outer layer of the system. It connects to different types of data sources and forwards the data to the central Core service

DataSource

A Data Source is connected to the Core through the Connector. Can be an OPC data source, a relational databases or even a file containing data connected through Dropzone

I/O Item

A named element acquired from an item-oriented system like an OPC UA server, or text imports created by Dropzone or SQL scripts. Can be dynamic and provide updated values or have a static value

GenericItem

A User created item that can generate data OR execute a Lua script periodically

ActionItem

A User created item that can execute a Lua script when triggered by another object or referenced data item

Data Holder Item

A User created item that displays real-time data produced by another referenced data source

Folder

Organizes objects in the I/O model tree – can house Lua script libraries, available to all objects in the folder or in the tree

Variable

A User created item that displays real-time data but has less properties than a Data Holder item. This makes it more memory efficient and is ideal for large systems containing large numbers of objects.

ReportItem

User created item that can be used to generate reports using data from objects in the system. The ReportItem executes a Lua script that returns a JSON string containing the selected data for the report. Can be added to Report Designer and Dashboard displays.

Table Holder Item

A User created item, similar to the Data Holder item except it can be used to store tabular data. The data is stored in the Table Data property of the Object and can be read or written to using any of the the system interfaces (Lua, SCI etc.). The schema of the table is user defined and can also be imported from an existing table (an Excel file for example).

Redundant Item

Redundant items are created to ensure redundancy is maintained and no important data values are lost in the event of loss of service. Redundant items are linked to I/O items under servers and receive values when the I/O item value changes. Multiple identical I/O items can be linked to the same Redundant I/O item.

Time Scheduler

Time scheduler items used to trigger other items in the I/O model to perform actions (execute a Lua script for example) at a set time or date. Multiple items can be linked to one scheduler item and there are multiple options for scheduling available in the settings.

History Transporter

The History Transporter item is used to transfer large amounts of historical data from external historians into the system. These items are created below historian Datasources that the Connector client is connected too. The History Transporter can be used with all OPC HAD historians and OSIsoft PI and Aspentech systems.