Atlas Copco PowerMACS 4000, User Manual

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Tightening
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Note 2 When a bolt is ordered to terminate the following rules are used to decide its status:

A bolt that has a termination sequence defined, that is, the parameter Terminate with step is
non-empty, for the last step it executed (in its current state) will get status NOKRM (NOK if it
belongs to the Failing group).

A bolt that ends its cycle before reaching a CE step due to a termination order will get status
NOKRM (NOK if it belongs to the Reject bolts group).

Remaining bolts, that is, those that have reached a CE step and does not have a termination
sequence defined for the last step executed, will keep the status they have before they are
ordered to terminate since the termination order will not cause any action.

Emergency stopped bolts that do not have a termination sequence defined get status OK if all
steps were run successfully and NOK if not.

Emergency stopped bolts that have a termination sequence defined get status TERMNOK
since the termination steps were not run.

All bolts that fail during the termination sequence will get status TERMNOK.
Note 3 If a bolt is ready with initial repair, and has no repair step, it waits for the other bolts to finish their
repair. If any of these other bolts fail when running the “Failing synchronization interval” the failing
bolt will cause a repairable error treated as a
First failure as the repair is ready. The waiting bolt
will do Repair or Terminate according to the Retry in the step from which the repair was started.
Note 4 Bolts that end their cycle at a CE step in the repair part of the program reenters state Running
Normal when the CE step is reached. The repair is finished when all bolts running repair have
reached CE or the Failing synchronization interval. At this point the bolts go back to state Running
Normal. If any bolt still running steps fails while a bolt waits after last step before CE, the waiting
bolt will do Repair or Terminate according to the Retry in the step it is waiting at.
Please note that the above rules controls the status a bolt will have after executing the normal steps but
before evaluating the monitoring checks configured for the CE step. See chapter: Cycle RM for a
description of how monitoring affects the resulting status.
See also chapter: Reject management states for a description of the states of the station and its bolts with
respect to reject management.
Synchronization marks
The usage of synchronization marks is very important for the execution of reject management. The station
will only make decision on reject management action when all bolts have stopped either due to that they
have failed executing a step or that they have reached a synchronization mark. They are also important
with respect to when a bolt is considered done with any repair (see chapter: Reject management states).
In addition to the explicit synchronization marks there are also a number implicit ones, namely:

All Cycle End (CE) and Return from Repair (RE) steps.
6.5.5.3 Configuring Reject Management
Most reject management settings are defined per step using the Rejects group.