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6. RAS Information (except RAS area on communication memory)
This chapter describes the following RAS functions of the DN211.
1. Indicators on the front panel
• Module status / network status LED (MS/NS)
• 7-segment LED (NA/ERROR)
2. Information by reading RAS Information
• RAS history counter
• Event history
See "4.3 The RAS information Area" for the RAS information area on the DN211 communication
memory.
CAUTION
1. This chapter describes the subjects necessary for using many functions of the DN211 from
the T2/T2E/T2N. Try to understand well before writing programs. Chapter 5 explains a sample
program that can read RAS information. Because the sample program is basic, you need to
discuss it before applying to real systems.