Restoration Starts Once Cpu Is Supplied With Power; Cpu Error Log - Delta AS Series Operation Manual

7.8

Restoration Starts Once CPU is supplied with Power

When the backup file in the memory card is consistent with the specific path and file name, the CPU can
perform restoration once it is supplied with power. During restoration, the CPU LED and Error LED blinks
alternatively and SM452 flag is ON. After restoration is done, the CPU LED and Error LED stops blinking and
SM452 flag is OFF.
Operation Steps:
(1) Set up the backup file path and file name for the memory card backup file. The filename of the backup file
is AUTOEXEC.dup and the root directory path of the memory card is \PLC
CARD\AS300\SysDup\AS300_BACKUP.dup
(2) Insert the memory card into the card slot when the CPU power is off.
(3) When the CPU power is on, it automatically checks if the memory card data is consistent with the PLC data.
If not, the restoration begins. The data check is specifically on the data in CPU programs and HWCONFIG
parameters.
(4) During the restoration, the CPU LED and Error LED blinks alternatively. Once the restoration is done, the
blinking stops.

CPU Error Log

7.9
The system stores CPU error messages in the memory card whenever the quantity of the error messages
reached to 20. You can also use special flag SM36 and special device SR36 to read the CPU error messages
and state change logs. If there is error logs recorded in the memory card, the memory card keeps storing the
error logs. You can change the file path to store other error logs or change the file name to store other error
logs.
Special Device
a. when the value is 0, it indicates there is no recording.
b. when the value is 1234, it indicates the logs are stored in the memory card.
SR36
c. when the value is 3456, it indicates the error logs and state change logs are stored in
the memory card.
Operation Steps to read CPU error logs and state change logs:
Make sure the memory card is in the slot before reading the CPU error logs and state change logs.
(1) Set SM36 to ON and the value in SR36 to 1234 or 3456 to read the CPU error logs and state change logs.
(2) The root directory path of the memory card for error log is \PLC CARD\AS300\Log\Error.log
(3) Use ISPSoft to read the error logs. ISPSoft Tools -> Review Error Log File -> Open Log File
C h a p t e r 7 M e m o r y C a r d
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