Profibusconnection Mi FX2N-64DPM to Indramat servo

[Guest Bartie]

I've got actually a heavy problem with an Mitsubishi FX2N with Profibusmaster. (configuration in attachment) Problem is scantime. When I run the program with only some MT-modules (remote I/O from Mitsubishi) connected, I have a scantime from +/- 6ms. When I connect the 3 servodrives from Indramat (also by Profibus), the scantime is going to 180ms, which is really to slow. Is there a possibility to reduce the scantime ???? I have only 1 or 2 TO and FROM instructions in my program. Does anybody have experience with this ? Thanks a lot in advance !

[Contr_Conn 4]

Check your ladder make sure you are not using From/To constantly. You have to read "comm ready" signal from the module and use it inline with From/TO. DKC should not be a problem, Profibus module there uses separate processor.