Hai this is surendra,currently i am working on modbus communication protocol.I facing a problem with in sinamics G120 drive.My objective is i need to rotate the motor speed with different RPM's from the drive.For this i write the reference speed some 1000 rpm.This reference speed is successfully updates to the belonging register and i wrote the control word with 047F to activate the speed set point and enable all remaining parameters.When i write the control word register at that time the drive should be on.But it is not happening,where i am doing the fault in this?and what should i do know please suggest me on this issue.

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Split from ET200s - Modbus Communication on RS485.