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[User Guide]
Master Controller Executive
performs
NTMC startup, shutdown, and other functions relevant to all
components of the system. Except system startup and shutdown which must be
operator initiated, execution of this core component is transparent. The
sections below summarize the program’s most important activities.
System Startup
The program controls
timing and order in which other system components are started. The core
components IOEX and RUEX are started first, followed optionally by any modules
consistent with the customer’s license. MCEX also allows starting up of
individual components which are off-line. For Remote
Clients the program
controls startup of corresponding remote client components only.
System Shutdown
The program controls
timing and order in which other system components are terminated. Modules shut
down first, followed by RUEX, MCEX, and finally IOEX, in that order. For remote
clients the program controls shutdown of corresponding remote client components
only.
Subsystem Status Display
MCEX displays
status of all components, core and modules. Each subsystem is shown either
off-line, or on-line. In the latter case, component’s current mode is shown.
Identifier of a host computer running each subsystem is displayed as well.
Midnight Procedures
The program
dictates timing of midnight procedures of all system components, core and
modules. This includes scheduling and queuing of various daily tasks,
re-calculation of selected internal parameters. It also stops all activities
while automatic system backup is being performed. This ensures a consistent set
of files gets backed up every midnight.
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