Toshiba GR200 Series - 10.2.1 Mismatch between ROM and RAM data (ROM;RAM error); (i) Error level; (ii) Error message

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 1236 -
10.2.1 Mismatch between ROM and RAM data (ROM/RAM error)
The ROM and RAM on the CPU module are verified every two minutes; 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) for the supervision, checking error on
the RAM and the ROM is carried out periodically. If the error is detected, the IED restarts its
operation automatically. The supervision function runs on the CPU module
1
.
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 10.2-3 Error messages provided by the supervisor in CHK_ROMRAM
Message and level
Meaning of the information
CP*_ (ROM/RAM) error
Mismatch between the RAM and ROM detected on the following
module instructed with “CP*_” as follows:
CP1M: CPU module
Error level
Serious error (Level 1)
Table 10.2-4 Detailed information in CHK_ROMRAM
Display
area
Meaning of the detailed information
Left column
Right column
Top
row
00000001: Read error in ROM
00000002: Mismatch between ROM and RAM
ROM address
Middle
row
RAM address
ROM value
Bottom
row
RAM value
(No information displayed)