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24 MEMORY CARD FUNCTION
24.1 SD Memory Card Forced Stop
Operation of function accessing SD memory card
The following table shows the operation when the main function is executed while SD memory card is being accessed and
when SD memory card is accessed after SD memory card is disabled.
*1 Operation is same as when the SD memory card is not attached.
*2 While being removed, the SD memory card is not accessed. (Page 141 When files are created)
Releasing the SD memory card forced stop status
After the SD memory card has turned to disable status, release the SD memory card forced stop status by the operation
shown below.
1. Load SD card again.
* 1
2. When a forced stop operation is carried out by SM606, turn OFF SM606.
*1 The CARD LED will blinklight up.
Precautions
The precaution regarding SD memory card forced stop is described below.
• When a forced stop operation is carried out by both the SD memory card disable switch and by SM606, operation carried
out earlier becomes valid, and the operation carried out later becomes invalid. For example, after the forced stop by SD
memory card disable switch, when SM606 is turned ONOFF without removing the SD memory card, the disable status of
the SD memory card can be released. After the forced stop by SD memory card disable switch, when SD memory card is
removed and then SM606 is turned ON, SM606 operation is ignored.
Function under execution When main function is executed while
SD memory card is being accessed
When SD memory card is accessed
after SD memory card is disabled
Boot operation After completing execution function, SD
memory card turns to disabled status.
• Access to the label/device comment in the SD memory
card
• Device/label initialization operation at STOPRUN
CPU module error occurs.
*1
Access to the SD memory card by engineering tool/
SLMP/file transfer function (FTP server, FTP client)
Error handling occurs. Error handling occurs.
Data logging function This function works by disabling data writes to
the SD memory card while allowing data
collection to continue.
(Page 194 SD memory card replacement)
Memory dump function Error handling occurs.
Event history function
(Save destination: SD memory card)
Logging of the
event history
After the event history in the internal memory is
stored in the SD memory card, the SD memory
card turns to disabled status.
*2
Viewing/clearing
the event history
Error handling occurs. Error handling occurs.
Data backup/restoration function At completion of the backup/restoration
processing of a file, the SD memory card is
disabled, the backup/restoration function is
completed with an error, and then the cause of
error is stored in a special register.
The cause of error is stored in a special register.
Extended file register (ER) function Extended file register (ER) function is
completed with an error, and SD memory card
turns to disabled status.
Also, a operation error 3586H occurs.
A operation error 3586H occurs.
File operation instruction The function is completed with an error, and the
SD memory card turns to disabled status.
8000H is stored in the completion status of the
file operation instruction.
8000H is stored in the completion status of the
file operation instruction.
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