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14 DEDICATED INSTRUCTIONS
14.6 PFWRT
Setting
Internal device
data
Bit
(S)
–
(D)
[Instruction symbol]
PFWRT
[Setting data]
Setting data
QD75 head I/O number
"Un"
(00 to FE: High-order two digits of I/O number expressed in three digits)
(S)
Head number of a device in which control data is stored
Head number of a bit device which turns ON the operation by one scan at the
(D)
time of completion of the instruction.
If the instruction is completed abnormally, ((D) + 1) will also be turned ON.
Note) The file register of each of the local device and the program cannot be used as a device for setting data.
[Control data]
Device
Item
(S)+0
System area
(S)+1
Complete status
1: The data on the setting side is as follows.
• User
: Data before the execution of dedicated instructions is stored by user.
• System: Data after the execution of dedicated instruction is stored by PLC CPU.
2: Refer to Section 15.2 for error codes at abnormal completion.
These dedicated instructions are used to write the QD75 parameters, positioning data
and block start data to the flash ROM.
File
register
Word
–
[Execution condition]
Setting details
The state at the time of completion is stored.
0
Other than 0 : Abnormal completion (error code)( 2)
Usable device
MELSECNET/10
Special
direct J \
module
U \G
Bit
Word
–
–
Setting data
–
: Normal completion
14 - 16
Index
Constant
register
Zn
K, H, $
–
–
ZP.PFWRT
"Un"
(S)
Setting side
( 1)
User
–
System
Setting
Range
–
–
MELSEC-Q
Others
–
–
(D)
Data type
BIN 16 bits
Device
Bit
Setting side
( 1)
–
System
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