Use Case: Standard Command

Description:  Process standard command.

Role(s)/Actor(s): 
Primary: User
Secondary: SW Device, HW Device

Priority: Major

Performance:  Up to a couple of minutes.

Frequency:  Any time

Package Assignment:  StandardPackage.

Preconditions: 

• Process ready to receive commands.

Basic Course: 

• Receive new standard command
  Exception Course: Receive failed
  Exception Course: Not a standard command
• Send the command to all dependent sub-systems
  ONLY for the commands OFF, INIT, STANDBY, ONLINE, STOP/BREAK, EXIT/KILL and SELFTST
  Wait for those devices to reply
  Exception Course: Send failed
• Process command:
  

   
  Standard Commands:

  • Subflow: Command OFF
  • Subflow: Command INIT
  • Subflow: Command STANDBY
  • Subflow: Command ONLINE
  • Subflow: Commands STOP|BREAK
  • Subflow: Commands EXIT|KILL

   

  • Subflow: Command SIMULAT
  • Subflow: Command STOPSIM
  • Subflow: Command SELFTST
  • Subflow: Command TEST

   
  Query & Tool Commands:

  • Subflow: Command STATE
  • Subflow: Command STATUS
  • Subflow: Command VERSION

   

  • Subflow: Command GETINIT
  • Subflow: Command GETSIM

   

  • Subflow: Command VERBOSE
  • Subflow: Command GETVERB
  • Subflow: Command DEBUG
  • Subflow: Command GETDEBU
  • Subflow: Command TRACE
  • Subflow: Command GETTRA
  Exception Course: Command failed
• Return OK reply

Subflow:  Command OFF

• Set process to Loaded, ready to receive commands.
  Postcondition: State is LOADED - Not Initialized.

Subflow:  Command INIT

• Initialize process
  Postcondition: State is LOADED - Initialized.

Subflow:  Command STANDBY

• Set process in Stand-By
  Postcondition: State is STANDBY - Idle.

Subflow:  Command ONLINE

• Set process On-Line
  Postcondition: State is ONLINE - Idle.

Subflow:  Commands STOP | BREAK

• Stop on-going activity
  Postcondition: State is unchanged - Sub-state is Idle.

Subflow:  Commands EXIT | KILL

• Terminate process
  Postcondition: State is OFF - Idle
  The process is terminated.

Subflow:  Command SIMULAT

• Set the process to simulation mode
  Postcondition: State is LOADED - Not Initialized.

Subflow:  Command STOPSIM

• Set the process back to normal mode
  Postcondition: State is LOADED - Not Initialized.

Subflow:  Command SELFTST

• Performs a selftest
  Postcondition: State is unchanged Idle.

Subflow:  Command TEST

• Performs complete system tests
  Postcondition: State is LOADED - Not Initialized.

Subflow:  Command STATE

• Return current state (evt. with sub-state)
  Postcondition: State is unchanged.

Subflow:  Command STATUS

• Return current system status
  Postcondition: State is unchanged.

Subflow:  Command VERSION

• Return module version
  Postcondition: State is unchanged.

Subflow:  Command GETINIT

• Return the Initialization status: Not Initialized|Initializing|Initialized
  Postcondition: State is unchanged.

Subflow:  Command GETSIM

• Return simulation flag
  Postcondition: State is unchanged.

Subflow:  Command VERBOSE

• Set verbose mode On|Off
  Postcondition: State is unchanged.

Subflow:  Command GETVERB

• Return verbose mode
  Postcondition: State is unchanged.

Subflow:  Command DEBUG

• Set debug flag On|Off
  Postcondition: State is unchanged.

Subflow:  Command GETDEBU

• Return debug flag
  Postcondition: State is unchanged.

Subflow:  Command TRACE

• Set trace flag On|Off
  Postcondition: State is unchanged.

Subflow:  Command GETTRA

• Return trace flag
  Postcondition: State is unchanged.

Exception Course: Receive failed

• Return Error reply

Exception Course: Not a standard command

• Return Error reply

Exception Course: Command failed

• Return Error reply

Postconditions: 

• Module in requested state - sub-state.

Issues to be Determined or Resolved: None

Notes: 

Possible conflicting situation may occur when a SW device is composed of sub-SW devices and all are declared in the LCC Device Table. The automatic propagation of the standard commands to all registered SW devices may collide with the internal propagation of those commands to the sub-SW devices by the main SW device: The dependent SW devices shall not be registered in the Device Table and rely solely on the command propagation. An error is returned if a dependent SW device is found in the Device Table. This check will be performed once at boot time, when the command SELFTST is sent to all devices found in the Device Table.

Last modified: Thu Jun 28 13:55:43 UTC 2001