T
We just acquired an ABB ACS600 demonstration unit along with an NMBA-01 Modbus adapter unit so that I could test communications between our controller and the ABB drive. I have made all of the power connections, and connected our controller to the drive through the adapter. I have set up the drive parameters so that it knows there is a fieldbus adapter present. I am now experiencing the following problem:
As soon as I send a query from our controller to the drive, the ERROR LED on the adapter comes on and stays on continuously. The receive LED on the adapter continues to flash whenever I send a message to the drive, and the bad messages counter on the drive continues to increment. If I send a message to the drive using incorrect parity, both the ERROR and receive LED's flash briefly, then go out.
Does anyone know if there is any way an error in what I am sending would cause the ERROR LED to come on solid, or would this only be caused by a hardware failure in the adapter module?
As soon as I send a query from our controller to the drive, the ERROR LED on the adapter comes on and stays on continuously. The receive LED on the adapter continues to flash whenever I send a message to the drive, and the bad messages counter on the drive continues to increment. If I send a message to the drive using incorrect parity, both the ERROR and receive LED's flash briefly, then go out.
Does anyone know if there is any way an error in what I am sending would cause the ERROR LED to come on solid, or would this only be caused by a hardware failure in the adapter module?