I am struggling to connect to a device. What are the potential issues?

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.