Toshiba GR200 Series Instruction Manual page 485

Supervision of ECC on memory (ECC error)
9.2.4
The error-correcting code memory (ECC memory), in the CPU module, is verified at any time.
Error level
(i)
The error level has been set at level 1 (Serious error
the ECC is carried out at any time. If the error is detected, the IED restarts its operation
automatically. The supervision function runs on the CPU module
is made promptly when the error is solved.
Note: The CPU module is discussed in Chapter
1
and communication module: Processing module.
Error message
(ii)
When detecting an error, an error message can be shown on the LCD screen and an LED is lit.
Table 9.2-8 Error messages provided by the supervisor in CHK_ECC
Message and level
CP*_ (ECC) error
Error level
Table 9.2-9 Detailed information in Hexadecimal in CHK_ECC
Display
area
Top
row
Middle
Number of detections of bit errors
row
Bottom Number of rewriting failure occurred
row after the correction of single bit error
Error in the ECC is detected on the following module instructed
with "CP*_" as follows:
CP1M:
Serious error (Level 1)
Meaning of the detailed information
Left column
err_cnt value
- 471 -
) for the supervision; checking error on
1
Technical description: Signal processing
Meaning of the information
CPU module
Right column
Error address
Address for rewriting failure occurred after
the correction of single bit error
ECC status
00000001: Completion of correction
00000002: Failure of correction
00000004: Detection of single error
00000008: Detection of several errors
00000010: Writing failure of data correction
6F2S1931 (0.20)
. Clearing the error message
1
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)