ATV650 ModbusTCP drive profile and M580

[FloRida]

Hello. I am trying to make some sense out of how the request functions in the network card.

In the project I have the ATV650 profile is set up in somove this way:

The request setting is setup this way, so it matches the drive profile:

And it all works.

Question:

But as I can see the read and write registers are overlapping.

How does this make sense, since we are reading the status from the first register and writing the command to that same register. Is this something the drive is handling?

[Hennie_Smith · Accepted solution]

Hi, All the Altivar VSD's are the same where you read and write to the same index 0. The drive manages the correct interpretation based on the modbus request.