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Integration between OPC and Webservcies
Posted: 29 Oct 2012, 08:44
by Haitham
I have Building managment system using OPC client and server and need to read from Cisco the alarm and device status, the only way that cisco is providing is Web service access. but the BMS can send only OPC request.
Is there any way to resolve this issue??
Re:Integration between OPC and Webservcies
Posted: 31 Oct 2012, 15:56
by Support Team
Hi,
The easiest way would be to implement an OPC UA server that wraps the cisco web services with OPC UA methods. The BMS would be able to call the OPC UA methods if it supports OPC UA.
But I assume the BMS does support only classic (COM based) OPC Data Access.
In this case it would be necessary to implement an OPC server that is using the services to read device status and alarm information and provides this information as OPC data access items. If the client supports classic (COM based) OPC Alarms & Events, the alarm information can be provided as OPC Alarm.
It would be also possible to implement an OPC UA server for the data acquisition and event/alarm generation and to use UaGateway to provide access for clients limited to the old OPC interfaces.
Best Regards,
Unified Automation Support Team