Local station failure

In this section

This section describes what happens if a local station fails during a method run. The run may continue but the results generated after the failure cannot be saved unless a CU-950 Advanced or CU-960 Advanced controller is used.

Systems with CU-950/CU-960 Advanced controller

The table below describes what happens when these conditions are fulfilled:

  • A CU-950/CU-960 Advanced controller (with a memory card) is used

  • Data recovery = ON

  • Method behaviour = CONTINUE

    Note: Data recovery and Method behaviour is described in CU-950/CU-960 settings.

  • The communication is lost between the local station and the CU-950/CU-960 due to a computer crash.

Step

Action

1

  • The run continues under the control of CU-950/CU-960 during the communication loss.

  • The run data is saved in the CU-950/CU-960 memory card.

2

When the local station is up and running and the connection between the local station and the CU-950/CU-960 has been reestablished,

  • UNICORN uploads backup files from the hard drive of the local station

  • UNICORN requests the missing data from the CU-950/CU-960

  • the missing data is uploaded to the local station

  • during the upload the message Uploading is displayed under Instruments in the Run Data pane of the System Control module.

3

The run continues as normal

Systems without CU-950/CU-960 Advanced controller

When the local station is restarted after the failure, the temporary result file will be transferred to either of the following locations:

  • the original result file destination, usually on a network drive

or

  • the Failed folder, if the original destination is on a network drive which is not available. If C: is the UNICORN installation drive, the path to the Failed folder is C:\Unicorn\Local\Fil\Failed.

The result file will contain the results of the run up to and including the last auto save time (see explanation below) before the failure. Results after this time will be lost.

Auto save feature

An auto save feature saves a temporary result file on the local station every five minutes during runs, see System definitions.

If the local station is not logged on

If a run is performed on a local station which is not logged on to the network, the result file cannot be saved on a network drive. Instead the results will be saved in the Failed folder on the local station.

2005-06-15