Cause : PB/PN clock cycle synchronism not reached comes when the bus is in the data exchange state and clock synchronous operation has been selected using the parameterizing telegram. It was not possible to synchronize to the clock cycle specified by the master.

- the master does not send a clock synchronous global control telegram although clock synchronous operation was selected when configuring the bus.

- the master is using another clock synchronous DP clock cycle than was transferred to the slave in the parameterizing telegram.

- at least one drive object has a pulse enable (not controlled from PROFIBUS/PROFINET either).

- check the master application and bus configuration.

- check the consistency between the clock cycle input when configuring the slave and clock cycle setting at the master.

- check that no drive object has a pulse enable. Only enable the pulses after synchronizing the PROFIBUS/PROFINET drives.