Omron SYSMAC CS Series Instruction & Reference Manual page 944

3. Instructions
 Instruction-related Words and Bits
Name
File Write Error Flag
File Write Impossible Flag
File Read Error Flag
File Missing Flag
File Memory Operation Flag
Accessing File Flag
Number of Data to Transfer
 EM File Memory-related Words and Bits
Name
EM File Memory Format Error Flag
EM File Format Starting Bank
910
Address
A343.08 ON when an error occurred when writing to the file.
ON when the file being written is write-protected.
A343.09 ON when the data could not be written because there was insufficient free memory.
A343.10 ON when a file could not be read because its data was corrupted or if it contains the wrong
data type.
A343.11 ON when data could not be read because the specified file does not exist.
A343.13 ON for any of the following:
• The CPU Unit has sent a FINS command to itself using CMND(490).
• FREAD(700) or FWRIT(701) are being executed.
• The program is being overwritten using a control bit in memory.
• A simple backup operation is being performed.
A343.14 ON when file data is actually being accessed.
Use this flag as an execution condition to prevent a file memory instruction from being
executed while another is in progress.
A346 to A347 The contents of these words indicate the status of data file transfers.
When an FREAD(700) or FWRIT(701) instruction is executed, the number of words or fields
to be transferred is written to these words. The value is decremented by 1 as each word or
field is transferred.
A346 contains the rightmost 16 bits and A347 contains the leftmost 16 bits of the 32-bit
binary value.
Address
A343.06 ON when there is a format error in the starting bank of EM file memory.
A344 Contains the starting bank number of the EM Area that has been formatted for use as
EM file memory. Contains FFFF when none of the EM Area has been formatted.
Operation
Operation
CS/CJ/NSJ Series Instructions Reference Manual (W474)