EGX300 Custom Web Page Help.zip

[JamesJeanette]

How To: Helpful information when creating custom web pages in the EGX300 (using logged data).

[Anonymous user]

James, can we read multiple devices at one page? What about floating point data type?

[Randi_Dolan]

Hi Cheng,

When creating a custom page, you can read from as many devices as you like.  The data received from each device is a comma delimited array of the data returned by the Modbus request.  Therefore, the data returned is "raw" data and needs to be formatted based on the expected data type.  This means, to support floating point numbers, you will have to convert it from 2-16 bit integer numbers to a IEEE754 floating point number.

I hope this helps.

[Anonymous user]

got it to work Randi   thanks.

However seems like the different function code in the PL tag is not applicable. In my case, i just use PL__2^3903[2]__PL to read from PM1200, ID 2. Any idea?

There's a reference for the conversion on the web, it work for me:

http://stackoverflow.com/questions/6887003/convert-32bit-unsigned-real-data-type-splitted-into-two-1...