Use Case:  Monitor Transporter Status

Description:  Monitor the status of the Transporter PLC

Role(s)/Actor(s): 
Primary: Operator,Maintenance
Secondary: Transporter

Priority: Desirable

Performance: 1 second

Frequency: once per minute (TBC)

Package Assignment:  Transporter Subsystem.

Preconditions: 

• ATCS state is LOADED Initialized

Basic Course: 

• TRS trigger on given period
• ATCS sends the command to the Transporter PLC

  Interface:  IfTransporter.TransporterStatus

  Exception Course: Command failed
• ATCS reads and checks the status of the Transporter PLC
  Exception Course: Check failed

Exception Course: Command failed

• ATCS raise an alarm

Exception Course: Check failed

• ATCS raise an alarm

Postconditions: 

• The status of the Transporter is updated:
  • OK: The transporter PLC is operating normally
  • ERROR: The transporter PLC returned a failure

Issues to be Determined or Resolved: 

Notes:

Last modified: Tue Nov 27 09:05:13 UTC 2001