Mitsubishi Electric Melsec Q Series User Manual page 232

6 DEDICATED INSTRUCTIONS
1, 2
Setting data
Length of data read
n2 Designates the number of data (word count) to
be read.
Read complete device (local station)
Designate device that is turned on for one
(D2) scan by the read completion
(D2) off : Incomplete on: Complete
(D2) + 1 off : Normal
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Description
on: Abnormal
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 ZNRD instruction is executed using the
following fixed values.
Channel used by own station: Channel 1
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 reading from Q/L/QnA/
AnUCPU
1 to 230 (Constant)
When reading from
programmable controller CPUs
other than Q/L/QnA/AnUCPU
1 to 32 (Constant)
—
MELSEC-Q/L
3
Set by ( )
Data type
User Binary 16 bits
System Bit
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