Toshiba GR200 Series - 10.2.7 Supervision of program codes (CPU error); (i) Error level; (ii) Error message

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 1242 -
10.2.7 Supervision of program codes (CPU error)
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.
(i) Error level
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
1
.
Clearing the error message is made promptly 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 10.2-15 Error messages provided by the supervisor in CHK_PROGRAM
Message and level
Meaning of the information
CP*_(CPU) error
Error detection in the RAM and ROM located on the following
module:
CP1M: CPU module
Error level
Serious error (Level 1)
Table 10.2-16 Detailed information in Hexadecimal in CHK_PROGRAM
Display
area
Meaning of the detailed information
Left column
Right column
Top
row
00000000: Add error
00000002: Sub error
00000004: Mul error
00000008: Div error
00010000: Detection of overflow in Task stack
Task number causing overflow
Middle
row
Head address of overflowing task
(No information displayed)
Bottom
row
(No information displayed)
(No information displayed)