Siemens CB155

Hi guys,

If I use PPO3 in the profibus master and I send the start word on PZD1 (447F Hex) with setpoint (2000 Hex) the drive won't start!

I've changed the correct parameters in the drive for profibus communication...

Is there anybody who can help?

Is your control word getting to the drive ? you can monitor it in r733.01 (if it's the first CB board)

Wrong- a CB155 is for the old Combimasters.

Make sure P927 and P928 are set correctly. I typically put both to a 1.

Hello Martin;

A silly question: are you sending Hex 447F only, or a sequence of 447E and 447F?
Siemens drives need to see a rising edge on bit one of the control word to start up.
Hope this helps,
Daniel Chartier