User's Manual
Table Of Contents
- Front Cover
- Table of Contents
- List of Tables
- List of Figures
- Disclaimer
- Limited Rights Notice
- 1 Introduction
- 2 Overview
- 3 Functional description
- 4 Getting started
- 5 State machine
- 6 Creating a switch configuration
- 7 Diagnosis
- 8 Troubleshooting
- Appendix A List of Built-In Self-Tests
- Appendix B Serial terminal output at start-up
- Glossary
- References
- Index
5. STATE MACHINE
state makes it possible to access the system through the SHOP CLI from a serial terminal.
Transitions
Depending on the DB-25P configuration plug settings and whether errors are detected or not, the following
transition from the SHOP state is possible:
Transition to Shop-Mode Grnd-Mode Maintenance Error
Ð→
QUIET
– – – Catastrophic Failure
5.7 Error handling
The TTE-Switch A664 Lab v2.0’s state machine transitions to either the QUIET or PASSIVE state if it
detects a catastrophic failure or anomaly.
Catastrophic failure examples
• BIST fatal error (e.g., the switch would take permanent damage)
• Unrecoverable position error (e.g., a position could not be read)
• Unrecoverable file error (e.g., no file exists for a given position, CRC error)
Anomaly examples
• Maintenance is ON and Grnd-Mode is OFF
• Shop-Mode is ON and Grnd-Mode is OFF
To avoid these anomalies, set Grnd-Mode to ON by default.
© TTTech Computertechnik AG 2020. All rights reserved.
Confidential and Proprietary Information
23
Document Number:
D-A664Lab-G-05-001