6 DEDICATED INSTRUCTIONS
1,
2
Setting data
Data written storage head device (target station)
(D1)
Designate the head device of the target station
to which data is written.
Data written storage head device (local station)
(S)
Designate the head device of the local station
that stores the data to be written.
Length of data written
n2
Designates the number of data (word count) to
be written.
Write completion device (local station)
Designate device that is turned on for one
scan by the write completion.
(D2)
(D2)
off : Incomplete on: Complete
(D2) + 1 off : Normal
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Description
on: Abnormal
setting range
1 The local devices and the file register for each program cannot be used as the
device used for the setting data.
2 In addition to the setting data, the ZNWR instruction is executed using the
following fixed values.
Channel used by own station: Channel 2
Arrival monitoring time (monitoring time until instruction completion): 10 seconds
Number of resends for arrival monitoring timeout: 5 times
3 The "Set by" column indicates the following:
• User: Data is set by the user before executing a dedicated instruction.
• System: The programmable controller CPU stores the execution result of a
dedicated instruction.
Setting range
—
—
When writing to Q/L/QnA/
AnUCPU
1 to 230 (Constant)
When writing to programmable
controller CPUs other than
Q/L/QnA/AnUCPU
1 to 32 (Constant)
—
MELSEC-Q/L
3
Set by (
)
Data type
—
Device name
User
Binary 16 bits
System
Bit
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