How can write real value from Indusoft web scada down PLC !

[nguyenxuanphu]

Hello ! I'm a newbie !

I have Siemens VFD MM420 and I want to change speed and direction of motor from this VFD ..I could make it before by enter an REAL value for change speed and minus sigh (-) for change direction and write those value .down PLC S7 1200 Siemens.... 

But with Indusoft web i just can enter INTEGER value..i try use REAL value ....the value write down PLC from REAL value change to HEXA value when I see online and the VFD not working... 

Please help me...how can to solve this problem ? or i had any error s when build my project by ? 

Thank you very much !