Read IEEE 754 format data into Lookout

[Sudhi Mukherjee]

I would like to know how I could read IEEE 754 format data into Lookout. In my application, I have 4 bytes of 8-bits each coming to me over an Profibus OPC Connection. How do I display this data as a numeric? As an example, a temperature reading may come through as:
65,73,112,85
what do I have to do to show this as a real world temperature reading? Any help is greatly appreciated. Thanks.

Sudhi

[andreoliveira 47]

Hi Sudhi,

When doing OPC communication using Lookout, basically what you are doing is bringing inside Lookout a value exposed by an OPC server, so you will have available whatever the OPC server is giving you inside Lookout.
The way you convert the data inside Lookout is up to the application developer, Lookout does not have any built in functionality to convert the data.
In your case you should make reference to the IEEE 754 standard and check on how you could implement the convertion. I was able to find a few links on the IEEE 754 standard just by typing it on a internet search engine (for example google).

Regards

Andre Oliveira
Applications Engineer
National Instruments

[Sudhi Mukherjee]

Thanks Andre. I got around the problem by having the hardware / software acquiring the field data (Applicom IO Profibus) do the conversion. There doesn't seem to be any easy way of doing this in Lookout. Thanks again.

Sudhi