8300 | 8315 L&J Tankway Software Description |
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4 8315 L&J Tankway Software Description
The TankGate software platform is based on a real-time, multi-tasking operating system. The software consists of I/O scanning functions for data acquisition, a database/database manager and communication functions for data transfer.
Figure 4-1: Software Block Diagram
4.1Software Features
4.1.1Real-Time / Multitasking Executive
The operation of the TankGate is based on a highly reliable, field-proven real-time multitasking executive. It provides task switching based on real-time events and interrupts, message passing and task priorities. Its capabilities also include timed suspension of tasks, queue handlers and interrupt processing tasks.
4.1.2Real-Time Clock
Integral to the real-time executive is the system’s real-time clock. All timed events of the TankGate are coordinated by this clock. In addition to the real-time executive interaction, all field data scanning is coordinated by the real-time clock.
4.1.3Automatic Fault Recovery
The TankGate has a watchdog timer that is periodically strobed by the microprocessor. Should the processor suffer a lapse due to hardware or software failure, the watchdog timer will time out and the TankGate will then be reset and normal operation will resume.
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