Hi, 

I want to read two 16 bit float modbus address as single 32-bit float value in Wincc Runtime SCADA (TIA Portal V13).

Anyone tel me either VB Script or Internal Instruction to SWAP the these data without using PLC. 

I used formula As you said above 
Real value = (value at address 40001 * 65536) + value at address 40002.

I used two 40001 & 40002 tags as Float data type and Real Value tag as Real data type.

When i go online simulation i got   ( ######)  symbol in I/O field. 

Could any one please tel me what is the procedure and solutions.

Thank you.

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Split from Problem in reading Modbus real data type registers .

Hi,

 TIA portal WinCC RT Advaced support directly to the IEEE754 float data type formate, In my project i was used EM6436 Schneider energy meter for RS485 connection.

Please view the below link for Modbus Address format

https://support.industry.siemens.com/tf/ww/en/posts/how-to-read-the-modbus-floating-value-in-wincc-rt-advanced-using-internal-tags/147388/?page=0&pageSize=10