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CHAPTER 5 DEVICES
5
5.6 File Register (R, ZR)
(9) Precautions
(a) If the file register number not registered is used
If a file register file is not registered and writing to or reading from the file register is performed, "OPERATION
ERROR" (error code: 4101) occurs.
(b) If writing to or reading from the file register is performed exceeding the registered
size of points
"OPERATION ERROR" (error code: 4101) occurs.
(c) File register size check
When writing to or reading from the file register, check the file register size so that data can be written or read
within the size (points) set for the CPU module. Check the file register size at step 0 in the program if any file
register is used.
The file register size can be checked in SD647.
Before executing a file register block switching instruction (RSET), ensure that 1K points or more of space are
secured after the switching.
(File register size) > [32K points × (Switching block No.) + 1K points]
4K points specified
Transfer
command
Final file register
range check
Writing to the file
register
Alarm processing
Block switching command
Final file register
range check
Switching to block 1
Alarm processing
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