W
EB
S
ERVER
CPU M
ODULE
U
SER
’
S
M
ANUAL
FC9Y-B1278
13-3
13: T
ROUBLESHOOTING
3.
On the right of the
Error Status
in the PLC Status dialog box, click the
Clear
button.
This procedure clears the error code from special data register D8005 (general error code), and the error is cleared from
the PLC Status dialog box.
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.
Error Cleared
Clear Button
D8005
General Error Code
D8006
User Program Execution Error Code
Power failure
Watchdog timer error
Data link connection error
User program ROM sum check error
Timer/counter preset value sum check error
User program RAM sum check error
Keep data sum check error
User program syntax error
User program writing error
CPU module error
Clock IC error
Reserved
Memory cartridge program transfer error
I/O bus initialize error
Reserved
Error clear bit
Error information bits
Bit 15 14 13
12
11
10
9
8
7
6
5
4
3
2
1
0
D8005
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