Several issues could be the cause of this. A few typical causes are listed below: 

  • Communication cable is unplugged/damaged. 
  • Drive is in a boot up state. 
  • Flash card is unplugged. 
  • Installed hardware revisions are not correct. PG/PC 
  • Programming device has not been assigned in NetPro. 
  • Correct communication path, Device/S7ONLINE, has not been selected.
  • Incorrect communication protocol has been set. Profinet 
  • IP address on the programming device is not set to the range of the drive or is the same address. 
  • Using an eWON connection. Profibus 
  • Baud rate is set incorrectly. 
  • Node address on the programming device is the same as the drive. 
  • “PG/PC is the only master on the bus” is/is not set. This is specific for direct connection to a drive or via a routing method. 


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