802
7 APPLICATION INSTRUCTIONS
7.19 Other Instructions
• In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into SD0.
• The program which writes the ten points of data from D100 to the device data storage file in the standard ROM when M0
turns ON.
• The value written to the standard ROM is the value at execution of this instruction.
• The standard ROM write count index (SD687 and SD688) is increased by the execution of the SP.DEVST instruction. If the
standard ROM write count index exceeds one hundred thousand times, FLASH ROM ERROR (error code: 1610) occurs.
• To prevent the increase in the number of writes to ROM due to the unconsidered execution of instructions, set SD695
(Specification of the number of writes to standard ROM) to limit the number of writes in a day. The limitation on the number
of writes is 36 times (default value). Set the number of writes in SD695 as needed. When the number of writes exceeded
the set number, OPERATION ERROR (error code: 4113) will occur. The number of executions of write instructions to the
data memory in a day is initialized to 0 at the following timing.
• Data is written to the device data storage file when the END instruction is executed. Data is written to the device data
storage file when the END instruction is executed right after the execution of the SP.DEVST instruction. Therefore, writing
to the device data storage file may take multiple scans depending on the number of write points. Determine if data has been
written by checking a completion device.
Error
code
Error details Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
1610 The write frequency into standard ROM exceeds 100,000 times during
execution of SP.DEVST instruction.
2410 The device data storage file is not set at "PLC file" of PLC parameter on.
4100 The range of the write offset specified in n1 is out of the device data storage
file range.
The number of n2 points from the write offset specified at n1 is out of the
device data storage file range.
The value specified in n2 is 0 or a negative value.
4101 The range of the device specified by (S) exceeds the range from (S) to
(S)+n2 (including (S)).
The device specified by (D) exceeds the range of the corresponding device.
4113 The value out of the given range is specified in the SD695 during execution
of SP.DEVST instruction.
The write frequency into standard ROM at the current day exceeds the value
specified by the SD695 during execution of SP.DEVST instruction.
[Ladder Mode] [List Mode]
• When the CPU module is powered off and on, or reset
• When the date (year, month, day) of clock data is changed due to temporal progress
• When clock data (year, month, day) in the CPU module is changed due to a function that changes clock data
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