IDEC FT1A-B12RA, User Manual

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FT9Y-B1378 14-3
14: T
ROUBLESHOOTING
Special Data Registers for Error Information
Two data registers are assigned to store information on errors.
Example: This ladder program clears the error information using the error clear bit of special data register D8005.
General Error Codes
The error code is stored in special data register D8005.
If '1' is stored in each bit of D8005, the corresponding error is occurring.
D8005 General Error Code
D8006 User Program Execution Error Code
Turn on M0 and turn on the upper bit of D8005.
The error information is cleared at the end of the ladder scan.
Bit 15 2 1 0
Power failure
D8005
3 6 5 4 7 8 9 12 11 10 13 14
Watchdog timer error
Reserved
User program ROM sum check error
Timer/counter preset value sum check error
Reserved
Keep data sum check error
User program syntax error
User program writing error
System error
Reserved
Reserved
Memory cartridge program transfer error
User program execution error
SD memory card access error
Error clear bit
Error information bits