979
3. Instructions
CS/CJ/NSJ Series Instructions Reference Manual (W474)
File Memory Instructions
3
File Memory Instructions
z CMND(490): DELIVER COMMAND
Instruction
Note Make the following settings in CMND(490)'s control words:
Destination network address: 00 hex (local network), Serial port: 0 hex (not used), Destination unit address:
00 hex (CPU Unit), Destination node address: 00 hex (local node), Retries: 0 hex (Set to 0 because retrying
is disabled.)
FINS Commands Related to File Memory
Note There are other FINS commands related to file memory that are not shown in the following table that can be
executed. Refer to the Communications Command Reference Manual (W342) for details on FINS com-
mands.
CMND(490) cannot be executed to the local CPU Unit if another CMND(490) or file memory instruction
is being executed to another CPU Unit, A File Memory Instruction is being executed, the program is
being replaced by an Auxiliary Area control bit operation, or a simple backup operation is being
executed. Be sure to include the File Memory Operation Flag (A34313) as a normally closed condition
to prevent CMND(490) from being executed while another file memory operation is in progress.
If CMND(490) cannot be executed for the local CPU Unit, the Error Flag will be turned ON.
Related Auxiliary Bits/Words
Name Mnemonic Operation
DELIVER COMMAND CMND
(490)
CMND(490) can be used to issue a FINS command to the local CPU Unit itself to perform file
memory operations such as formatting or deleting files.
Name Address Operation
File Memory Operation
Flag
A343.13 ON for any file memory operation. OFF when no file memory operation is in progress.
• Starting Memory Card detection.
• The CPU Unit is processing a FINS command sent to itself using CMND(490).
• FREAD(700) or FWRIT(701) is being executed.
• The program is being overwritten using an Auxiliary Area control bit.
• A simple backup operation is being performed.
Memory Card Detected
Flag
A343.15 ON when a Memory Card has been detected.
OFF when a Memory Card is not detected.
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