End

  1. The Subarray node provides API for End workflow.

  2. The purpose of command is to conclude an observation block: it stops subsystem configuration context (but does not free resources) and moves the subarray from a READY or post-scan condition back to an IDLE state ready either for another configure or for later full release.

  3. The Sub-array node accepts the command if :-

    1. Admin mode reported by each of the system - CSP,SDP subarray are in ONLINE/ENGINEERING/RESERVED

    2. Operational state of the Sub-array node is ON/OFF/INIT/STANDBY/ALARM

  4. The Sub-array Node rejects the command if :-

    1. Admin mode reported by each of the system - CSP,SDP Sub-array are in OFFLINE or NOT FITTED.

    2. Operational state of central node is FAULT/UNKNOWN/DISABLE .

  5. The following state requirements are applied for the command execution :-

    1. TMC Subarray is in ‘observation state’ IDLE or READY .

    2. isSubarrayAvailable is checked to ensure the subsystems (CSP, SDP and MCCS) are available

  6. The command execution involves below key operations :-

    1. Resets or clears any stored scan duration and associated timing or scan completion timers .

    2. The command is then invoked on the relevant TMC CSP, SDP, MCCS leaf Nodes.

      • If leaf node rejects End command , command failure is reported as ‘RESULT_CODE - FAILED’ on Long Running Command Result attribute of the TMC Subarry node.Command will not be sent to remaining subsystems in this case if multiple subsystems are involved .

      • If all leaf node accept command , the TMC Subarry node will wait for command completion.

  7. The Sub-array node monitors the progress of command via the Sub-array node ObsState transitions and the long running command results.

    1. Command is successful when the TMC Subarray Node transitions to IDLE ObsState. This is reported as ‘RESULT_CODE - OK’ on Long Running Command Result attribute of the Subarray node.

    2. Command failure is reported in any of the below cases as ‘RESULT_CODE - FAILED’ on Long Running Command Result attribute of the sub-array node.

      • The CSP Leaf node/SDP Leaf node/MCCS Leaf node reports ‘RESULT_CODE - FAILED’ on its Long Running Command Result attribute

      • The command times out if TMC SubarrayNode does not transition to IDLE within the timeout period specified by CommandTimeOutDefault property specified in helm chart of the TMC Subarray node .

  8. On success the system is ready for Release Resources or next configure; on failure it may revert to READY or FAULT depending on severity.