Toshiba GR200 Series Instruction Manual page 484

Supervision of RAM (RAM error)
9.2.3
The read-write operation on RAM circuit of the CPU module is verified at any time; 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 RAM 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 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 9.2-6 Error messages provided by the supervisor in CHK_RAM
Message and level
CP*_(RAM) error
Error level
Table 9.2-7 Detailed information in Hexadecimal in CHK_RAM
Display
area
Top
row
Middle
row
Bottom
(No information displayed)
row
Error detection in the RAM located on the following module
instructed with "CP*_" as follows:
CP1M:
Serious error (Level 1)
Meaning of the detailed information
Left column
Read value
Error address
- 470 -
) for the supervision; checking errors on
1
Technical description: Signal processing
Meaning of the information
CPU module
Right column
Write value
(No information displayed)
(No information displayed)
6F2S1931 (0.20)
. Clearing the error message
1
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)