Hello,

There are 2 dives MM440 installed, communicating with S7-300 via profibus. Problem is that both the drives are showing alarm F085. I have tried by disconnecting all digital inputs but the error is still there.

I can view only limited parameters as P0003 is set to 0

 can anyone help mwe what is the reason?

I checked and found p704 was set to 29. Now i set it to 0 and error F085 is gone.

One other problem is that drive is still not running and LED on profibus card is blinking on MM440. Can anyone help please