Chapter 10
ARC – Data archiving
The RexCore executive of the REXYGEN system consists of various interconnected subsystems (real-time subsystem, diagnostic subsystem, drivers subsystem, etc.). One of these subsystems is the archiving subsystem.
The archiving subsystem takes care of recording the history of the control algorithm. The first chapter describes the functionality of the archiving subsystem while the subsequent chapters describe the function blocks of the REXYGEN system.
The function blocks can be divided into groups by their use:
- Blocks for generating alarms and events
- Blocks for recording trends
- Blocks for handling archives
10.1 Functionality of the archiving subsystem
10.2 Generating alarms and events
ALB, ALBI – Alarms for Boolean value
ALN, ALNI – Alarms for numerical value
ARS – Archive store value
10.3 Trends recording
ACD – Archive compression using Delta criterion
TRND – Real-time trend recording
TRNDV – Real-time trend recording with vector input
10.4 Archive management
AFLUSH – Forced archive flushing
10.2 Generating alarms and events
ALB, ALBI – Alarms for Boolean value
ALN, ALNI – Alarms for numerical value
ARS – Archive store value
10.3 Trends recording
ACD – Archive compression using Delta criterion
TRND – Real-time trend recording
TRNDV – Real-time trend recording with vector input
10.4 Archive management
AFLUSH – Forced archive flushing
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