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Supporting arrays (1D, 2D & N-D) & all primitive data types in an OPC Client

Dipika Khera

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05/14/2020 - 08:37

Hi Team,

As there are many data types available in OPC address space to create variables & properties of various types as per requirement of the industries using them. If a client has support for all primitive data types & 1D array & doesn't have support for 2D, N-D array.

Does this means that client is not compliant to OPC specifications ?

Ideally, what all data types should an OPC client supports ?

Thank you

Paul Hunkar

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05/19/2020 - 21:12

Clients typically support the datatypes they require. For example - a trend client might only support numbers, since that is all it trends on a screen. Most clients are generate for a specific purpose, if the client is just a general purpose client, then I would suggest all baseDatatypes and automatic support for Structure and enumeration extension that a server might provided. Support for multi-dimensional arrays and individual indices from arrays are also a good idea for a general purpose client.

Certification will test all datatypes that a client claims to support / appears to support and this result list will be published as part of the certification report.

Paul

Paul Hunkar - DSInteroperability

Dipika Khera

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05/20/2020 - 05:47

Thank you Paul for sharing details on Data Type support. 🙂