Toshiba GR200 Series Instruction Manual page 486

Supervision of MRAM (MRAM)
9.2.5
The error detection on the Magnetoresistive Random Access Memory (MRAM memory) of the
CPU module is verified every 1 second; when the error is found, an error message is displayed
by the supervision function.
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 function supervise for the MRAM on the CPU module
message is made in 1 second when the error is cleared.
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 9.2-10 Error messages provided by the supervisor in CHK_MRAM
Message and level
CP*_(MRAM) error
Error level
Table 9.2-11 Detailed information in Hexadecimal in CHK_MRAM
Display
area
Top
Address at error occurs
row
Middle
(No information is displayed)
row
Bottom
(No information is displayed)
row
Error detection in the MRAM located on the following module:
CP1M:
Serious error (Level 1)
Meaning of the detailed information
Left column
- 472 -
) for the supervision; checking errors on
1
Technical description: Signal processing
Meaning of the information
CPU module
Right column
00000001: Error detected with 0xaaaaaaaa
00000002: Error detected with 0x555555555
(No information is displayed)
(No information is displayed)
6F2S1931 (0.20)
. Clearing the error
1
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)