Kongsberg cJoy OT, Operator'S Manual

Page: 140 / 208

Message explanations
385585/C A-19
Estimator velocity limit exceeded
Description: The velocity estimate exceeds fatal limits.
Additional
information:
• Axis
• Velocity limit [m/s]
Possible
consequences:
Velocity estimate is set to the limit value.
Corrective
actions:
Deselect automatic heading control.
Check all sensors and position reference systems connected to the PS.
Event limit exceeded
Description: A cyclic task has not been able to execute for a long period of time.
Several periods have been lost.
Possible
consequences:
Depends on the importance of the functions executed in the task.
•
If strict regularity of the struggling task is crucial, then this alarm is serious.
•
If the task is supervised by software watchdog, the PS (Process Station) may
stop.
Corrective
actions:
•
Clarify the importance of strict regularity of the struggling task.
•
Check the Task Scheduler node in Station Explorer to find out whether the
poor scan regularity is a one-time incident or a permanent problem.
•
Contact Kongsberg Maritime Service.
External Clock: Communication error
Description: The event is reported from a host which is master and synchronized from an
external time source. The external clock is lost.
Possible
consequences:
Synchronization with the external clock is lost.
Corrective
actions:
•
Check that the serial line cable to the external clock is connected.
•
Check that the external clock is powered up.
•
Contact Kongsberg Maritime Service if this does not solve the problem.
External Clock: Limit exceeded
Description: This event is reported from a host which is master and synchronized from an
external time source. The event is reported when the time from the external
source differs more than the time limit set. The new time from the external time
source is rejected.
Possible
consequences:
Synchronization with the external clock is lost.