Siemens Sinumerik 840D sl Diagnostic Manual page 704

Overview of Alarms
SINAMICS-Alarms
Cause: There is no clock cycle synchronization and DSC is selected.
Note:
DSC: Dynamic Servo Control
Remedy: Set the clock cycle synchronization when configuring the bus.
201940 <location>IF1: PB/PN clock cycle synchronism not reached
Message -
value:
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: 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 (that is not controlled from PROFIBUS/PROFINET) has a pulse enable.
Remedy: - check the master application and bus configuration.
- check the consistency between the clock cycle input when configuring the slave and clock cycle set-
ting at the master.
- ensure that the pulses of drive objects that are not controlled by PROFIBUS/PROFINET are not
enabled. Only enable the pulses after synchronizing the PROFIBUS/PROFINET drives.
Note:
IF1: Interface 1
PB: PROFIBUS
PN: PROFINET
201941 <location>IF1: PB/PN clock cycle signal missing when establishing bus
communication
Message -
value:
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: The bus is in the data exchange state and clock synchronous operation has been selected using the
parameterizing telegram. The global control telegram for synchronization is not being received.
Remedy: Check the master application and bus configuration.
Note:
IF1: Interface 1
PB: PROFIBUS
PN: PROFINET
201943 <location>IF1: PB/PN clock cycle signal error when establishing bus
communication
Message -
value:
Drive object: All objects
Reaction: NONE
Acknowledge: NONE
Cause: The bus is in the data exchange state and clock synchronous operation has been selected using the
parameterizing telegram. The global control telegram for synchronization is being irregularly received.
-.the master is sending an irregular global control telegram.
- the master is using another clock synchronous DP clock cycle than was transferred to the slave in
the parameterizing telegram.
2-704
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG 2009 All Rights Reserved
03/2009