Dennis Brandl, a member of MESA International
JSON Schema is a grammar language for defining the structure, content, and (to some extent) semantics of JSON objects. See www.json-schema.org for information on JSON schemas. Schemas specify metadata (data about data) about what an object's properties mean and what values are valid for those properties. B2MML-JSON is derived from B2MML XSD definitions, using XMLSpy2021 from Altova (www.altova.com). B2MML-JSON is a complement to the B2MML XML format and will remain in sync with any changes to B2MML and ISA-95. JSON is typically used with REST based message exchanges, and XML is typically used with web service (SOAP) based exchanges.
The B2MML-JSON schema definition includes all the transactions specified in ISA-95 Part 5, providing one of the first standard syntax for fully qualified JSON message transactions. JSON messages can be exchanged using the ISA-95 Part 6 Message Service model, and the associated implementation OpenO&M implementation. The OpenO&M ISBM (Information Service Bus Model) defines both a web service and a REST interface specification to message exchange systems, and supports the exchange of XML and JSON messages. See www.mesa.org/en/ws-ISBM.asp for more information.
This is the first release of B2MML-JSON and it includes all BatchML and BatchML-GeneralRecipe elements. The current B2MML-JSON has all elements in a single file (rather large), but the MESA B2MML committee is looking for feedback from users on the best way to partition and organize JSON Schema files. B2MML-JSON users are encouraged to pick up B2MML V7 from the MESA web site at http://www.mesa.org/en/B2MML.asp. B2MML V7 is also available on Github at https://github.com/MESAInternational/B2MML-BatchML.
Dennis Brandl is the Chief Consultant for BR&L consulting, specializing in Manufacturing IT and Flexible Manufacturing solutions. He has been involved in MES, batch control, and automation system design and implementation in a wide range of applications over the past 30 years. Dennis is an active member of the ISA 95 Enterprise/Control System Integration committee, the ISA 99 Cyber System Security committee, and the IEC/ISO Smart Manufacturing Working Group, and a regular contributor to industry magazines. Mr. Brandl has a BS in Physics and an MS in Measurement and Control from Carnegie-Mellon University, and a MS in Computer Science from California State University.
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