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15 MEMORY CARD FUNCTION
15.1 SD Memory Card Forced Stop
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15 MEMORY CARD FUNCTION
The following explains the functions that use SD memory card.
15.1 SD Memory Card Forced Stop
SD memory card can be disabled without turning power ONOFF, even when a function that uses SD memory card is being
executed.
Methods of SD memory card forced stop
The methods of SD memory card forced stop are as described below.
■Operation by SD memory card disable switch
1. Press the SD memory card disable switch for 1 second or longer.
2. The CARD READY LED will flash onturn off.
*1
3. Remove the SD card.
*1 If there is a function accessing the SD memory card, the CARD READY LED will flash off after the access of that function is complete.
Therefore, the time from flash on to flash off will be different depending on the function.
■Operation by special relay
1. Turn ON SM606 (SD memory card forcibly disable command).
2. Check if CARD READY LED has turned off or SM607 (SD memory card forcibly disable status flag) has turned ON.
3. Remove the SD card.
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 Set whether an error due to accessing the SD memory card after SD memory card forced stop will be detected or not.
*2 Operation is same as when the SD memory card is not attached.
Function under execution When main function is executed while SD
memory card is being
When SD memory card is accessed after
SD memory card is disabled
Error check not
set
*1
Error check set
*1
Error check not
set
*1
Error check set
*1
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.
*2
Access to the SD memory card by engineering
tool/SLMP function
Error handling occurs. • Error handling occurs.
• CPU module
continuation error
occurs.
Error handling occurs. • Error handling occurs.
• CPU module
continuation error
occurs.
ON
OFF
ON
OFF
SM606 (SD memory card
forcibly disable command)
SM607 (SD memory card
forcibly disable status flag)