My micromaster 440 drives stop randomly with coom's error.Running at 500kbp/s.Change telegram off time on drive to1000 ms.Eleviate part of problem,can see on drive comms still drpop out.Comms very slow.Total length of cable about 400m.Repeater as well as terminator on line.Bus start at plc.Is it fine if I terminate plc side on profibus connector,or do I need two terminators.Total of 8 Drives,20 Simocodes,3Stations,Master and scada.Scada on its own bus.Is there any specific settings on the drive that I need to check.Does the drive accepts the transmission rate of the drive automatically.How will i know if i overload the bus.Is there any communication windowsoftware available.Any info will help.

Cheerio

Willy