Toshiba GR200 Series Instruction Manual page 488

Supervision of program codes (CPU error)
9.2.7
The program code in the ROM and RAM on the CPU module is verified every 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) for the supervision, detecting Program
errors on the RAM and the ROM are carried out every second. If the error is detected, the IED
restarts its operation automatically. The supervision function runs on the CPU module
Clearing the error message 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 9.2-14 Error messages provided by the supervisor in CHK_PROGRAM
Message and level
CP*_(CPU) error
Error level
Table 9.2-15 Detailed information in Hexadecimal in CHK_PROGRAM
Display
area
00000000: Add error
00000002: Sub error
Top
00000004: Mul error
row
00000008: Div error
00010000: Detection of overflow in Task stack
Middle
Head address of overflowing task
row
Bottom
(No information displayed)
row
Meaning of the information
Error detection in the RAM and ROM located on the following
module:
CP1M: CPU module
Serious error (Level 1)
Meaning of the detailed information
Left column
- 474 -
Technical description: Signal processing
Right column
Task number causing overflow
(No information displayed)
(No information displayed)
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
6F2S1931 (0.20)
.
1