Siemens SINUMERIK 840D sl Series Diagnostics Manual page 670

Overview of Alarms
Cause: PROFIBUS is in the data exchange state and clock synchronous operation has been
selected using the parameterizing telegram. Synchronization with the master sign-of-life
(STW2 bits 12-15) could not be completed because the sign-of-life is changing differently
than configured in the Tmapc time grid.
Remedy: - ensure that the master correctly increments the sign-of-life in the master application clock
cycle.
- check the interconnection of the master sign-of-life (p2045).
201950 <location>PROFIBUS: Clock synchronous operation, synchronization
unsuccessful
Reaction: OFF1 (NONE)
Acknowledge: IMMEDIATELY (POWER ON)
Cause: Synchronization of the internal clock cycle to the global control telegram has failed. The
internal clock cycle exhibits an unexpected shift.
Remedy: Siemens-internal
201951 <location>CU DRIVE-CLiQ: Synchronization, application clock cycle
missing
Reaction: OFF2 (NONE)
Acknowledge: IMMEDIATELY (POWER ON)
Cause: If DRIVE-CLiQ components with different application clock cycle are operated at a DRIVE-
CLiQ port, then this requires synchronization with the control unit.
This synchronization routine was not successful.
Fault value (r0949, decimal):
Only for internal Siemens troubleshooting.
Remedy: - carry-out a POWER ON (power off/on) for all components.
- upgrade the motor module software.
- upgrade the control unit software.
201952 <location>CU DRIVE-CLiQ: Synchronization of components not
supported
Reaction: OFF2 (NONE)
Acknowledge: IMMEDIATELY (POWER ON)
Cause: The existing system configuration requires at the connected DRIVE-CLiQ components
support the synchronization between the basic clock cycle, DRIVE-CLiQ clock cycle and
the application clock cycle.
However, not all DRIVE-CLiQ components have this functionality.
Fault value (r0949, decimal):
Component number of the first faulted DRIVE-CLiQ component.
Remedy: Upgrade the firmware of the component specified in the fault value.
Note:
If required, also upgrade additional components in the DRIVE-CLiQ line.
201953 <location>CU DRIVE-CLiQ: Synchronization not completed
Reaction: NONE
Acknowledge: NONE
Cause: After the drive system is powered-up, the synchronization between the basic clock cycle,
DRIVE-CLiQ clock cycle and application clock cycle was started but was not completed
within the selected time (tolerance).
Alarm value (r2124, decimal):
Only for internal Siemens troubleshooting.
Remedy: Carry-out a POWER ON (power off/on) for all components.
201954 <location>CU DRIVE-CLiQ: Synchronization not successful
Reaction: OFF2
Acknowledge: IMMEDIATELY (POWER ON)
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005