13: T
ROUBLESHOOTING
13-4
FC5A M
ICRO
S
MART
U
SER
’
S
M
ANUAL
FC9Y-B1268
CPU Module Operating Status, Output, and ERR LED during Errors
Error Items
Operating
Status
Output
ERR LED
Checked at
Power failure
Stop
OFF
OFF
Any time
Watchdog timer error
Stop
OFF
ON
Any time
Data link connection error
Stop
OFF
OFF
Initializing data link
User program ROM sum check error
Stop
OFF
ON
Starting operation
TIM/CNT preset value sum check error
Maintained
Maintained
OFF
Starting operation
User program RAM sum check error
Stop *1
OFF
ON
During operation
Keep data error
Maintained/
Stop *2
Maintained/
OFF *2
OFF
Turning power on
User program syntax error
Stop
OFF
ON
Downloading user program
User program writing error
Stop
OFF
ON
Downloading user program
CPU module error
Stop
OFF
ON
Turning power on
Clock IC error
Maintained
Maintained
ON
Any time
Memory cartridge program transfer error *3
Stop
OFF
ON
Turning power on
I/O bus initialize error
Stop
OFF
ON
Turning power on
User program execution error
Maintained
Maintained
ON
Executing user program
*1: When a program RAM sum check error occurs, operation is stopped momentarily for reloading the user program. After complet-
ing the reloading, operation resumes.
*2: Operation starts to run and outputs are turned on or off according to the user program as default, but it is also possible to stop
operation and turn off outputs using the Function Area Settings on WindLDR. See page 5-3.
*3: Memory cartridge program transfer error bit is available on FC5A-D12K1E and FC5A-D12S1E only.
Error Causes and Actions
0001h: Power Failure
This error indicates when the power supply is lower than the specified voltage. This error is also recorded when the
power is turned off. Clear the error code using the HMI module or WindLDR on a computer.
0002h: Watchdog Timer Error
The watchdog timer monitors the time required for one program cycle (scan time). When the time exceeds approxi-
mately 340 ms, the watchdog timer indicates an error. Clear the error code using the HMI module or WindLDR on a com-
puter. If this error occurs frequently, the MicroSmart CPU module has to be replaced.
0004h: Data Link Connection Error
This error indicates that the Function Area Settings for data link communication are incorrect or the cable is not con-
nected correctly. Make sure that slave stations are set to station numbers 1 through 31 using WindLDR. No duplication of
station numbers is allowed. See page 11-8.
To correct this error, make corrections in the Function Area Settings and download the user program to each station, or
connect the cable correctly. Turn power off and on again for the slave station. Then take one of the following actions:
Turn power off and on for the master station.
Initialize data link communication for the master station using WindLDR on a computer. See page 11-12.
Turn on special internal relay M8007 (data link communication initialize flag) at the master station. See page 11-7.
0008h: User Program ROM Sum Check Error
The user program stored in the MicroSmart CPU module EEPROM is broken. Download a correct user program to the
MicroSmart, and clear the error code using the HMI module or WindLDR on a computer.
When a memory cartridge is installed on the CPU module, the user program in the memory cartridge is checked.
0010h: Timer/Counter Preset Value Sum Check Error
The execution data of timer/counter preset values is broken. The timer/counter preset values are initialized to the values
of the user program automatically. Note that changed preset values are cleared and that the original values are restored.
Clear the error code using the HMI module or WindLDR on a computer.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
