EXIT:
shut down the camera server
This page is part of the ING document
INS-DAS-24:
client-server interface for control of cameras
Purpose: shut down the camera-server programme for one camera.
Actors: cmd client; udas_camera server; camera.
Outline: the client invokes the EXIT action on the server. The
server abandons any other actions it was doing, closes down the camera
and exits.
Normal course of events:
-
Client invokes the EXIT action on the server, with no arguments.
-
Server abandons all actions other than EXIT.
-
Server tells camera to power down its analogue stages (this protects the
detectors) while leaving the camera processors on-line.
-
Camera says that the power-down is complete.
-
Server sends good status to the client.
-
Server exits.
Variations:
-
At step 4, camera rejects the power-down command or does not reply. Camera
writes an error message directly to the log at debug level and goes on
to step 5.