Cause : Wait for communication comes when the drive waits for communication to be established to execute the safety-relevant motion monitoring functions.

If, after a longer period of time, the message is not automatically withdrawn, the following checks have to be made:
- Check any other PROFIsafe communication messages/signals present and evaluate them.
- check the operating state of the F-Host.
- Check the communication connection to the F Host.
See also: p9601, p9801