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34 Applied Instructions (FX3U-CF-ADP)
34.3 FLWR / Data write
784
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
Cautions
1) The FLWR instruction is completed abnormally if a CompactFlash
TM
card is not mounted.
2) The user should pay close attention to the number of times data is written when the writing destination is
set to the CompactFlash
TM
card because data is written every time the FLWR instruction is executed.
For example, if data is written to the CompactFlash
TM
card every one minute, data is written 100,000
times in approximately 2 months.
3) Even if the writing destination is set to the buffer inside the CF-ADP, data is written to the
CompactFlash
TM
card in the case of overwriting.
4) The FLWR instruction writes data to the CompactFlash
TM
card after the internal buffer inside the CF-ADP
becomes full when the writing destination is set to the buffer. Data stored in the internal buffer inside the
CF-ADP is erased when a (instantaneous or long) power interruption occurs.
5) When the data type is a data name (K8), the user can specify only the head line position before writing
other data. Index and DATE TIME are added automatically.
6) The FLWR instruction may require several scans to acquire data. Take proper measures such as saving
acquired data in another device if data consistency is required.
7) It is necessary to set the device number in multiples of 16 when a bit device is specified in and the
data type is set to anything other than bit type. When a word device is specified in and the data type
is set to bit, the FLWR instruction acquires data to be written from the least significant bit of the specified
device.
8) When is "K7" or "K8", 00H, which indicates the end of the string, must be added to the end of the
character string.
9) It is not permitted to use an "FLCRT, FLDEL, FLWR, FLRD, FLCMD or FLSTRD" instruction and a
following instruction for the same port:
- "RS or RS2" instruction
- "ADPRW" instruction
- "IVCK, IVDR, IVRD, IVWR, IVBWR or IVMC" instruction
10) The instruction is provided in the FX
3U and FX3UC PLCs Ver. 2.61 or later.