Toshiba GR200 Series - 10.2.5 Supervision of MRAM (MRAM); (i) Error level; (ii) Error message

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 1240 -
10.2.5 Supervision of MRAM (MRAM)
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.
(i) Error level
The error level has been set at level 1 (Serious error
1
) for the supervision; checking errors on
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
1
. Clearing the error
message is made in 1 second when the error is cleared.
1
Note: The CPU module is discussed in Chapter Technical description: Signal processing
and communication module: Processing module.
(ii) Error message
When detecting an error, an error message can be shown on the LCD screen and an LED is lit.
Table 10.2-11 Error messages provided by the supervisor in CHK_MRAM
Message and level
Meaning of the information
CP*_(MRAM) error
Error detection in the MRAM located on the following module:
CP1M: CPU module
Error level
Serious error (Level 1)
Table 10.2-12 Detailed information in Hexadecimal in CHK_MRAM
Display
area
Meaning of the detailed information
Left column
Right column
Top
row
Address at error occurs
00000001: Error detected with 0xaaaaaaaa
00000002: Error detected with 0x555555555
Middle
row
(No information is displayed)
(No information is displayed)
Bottom
row
(No information is displayed)
(No information is displayed)