OPC instance deadband

[Maryam]

DeadBand—Sets the percent of change within a range that a value from the OPC server must change before the OPC server communicates the value to the Shared Variable Engine.

I can't understand how OPC Server relize data range for different OPC items, where it can't see the range we set for each variable in shared variable configuration dialog box.

I will appreciate any help.

[EmmaR]

Hi Maryam,

Can I just clarify your question: are you asking how you configure the deadband value of your OPC server?

In order to be able to provide you with instructions on how to do this I need to know what you are using:

What OPC server are you using?

Are you trying to use the shared variable engine as an OPC server?

Have you got the NI Industrial Automation OPC Servers CD?

Or have you got a third party OPC server? - If so which?

Also are you using LV DSC to subscribe to the OPC?

If not what are you using? Datasocket? NI Lookout?

If you are using LV DSC what version are you using?

What are you using the OPC server to communicate with?

PLC? RTU? Hardware?

Via what client are you trying to communicate?

Are you using a software based client?

If so what piece of software are you using? and what version of the software?

LabVIEW? LabWindows/CVI, Measurement Studio?

Many thanks

Emma Rogulska

NIUK & Ireland