Mitsubishi Electric QJ71C24N User Manual page 314

10 DEDICATED INSTRUCTIONS
Function
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(1) This function clears reception data in the OS area. It does not clear the user data
reception area in the buffer memory.
(2) If the CSET instruction is executed while the reception data read request (X3/XA)
or reception abnormal detection signal (X4/XB) is turned on, the CSET instruction
is kept waiting until the signal is turned off.
(3) Simultaneous execution of dedicated instructions
The following table lists the handling for when executing another instruction during
execution of the CSET instruction or executing the CSET instruction during
execution of another instruction in the same channel.
Availability of
1
Instruction simultaneous
execution
ONDEMAND
OUTPUT
PRR
BIDOUT
BIDIN
INPUT (the right column)
CSET
PUTE
GETE
BUFRCVS
SPBUSY
UINI
1 The same channel cannot be used for the CPRTCL and CSET instructions
because different communication protocols are used for them.
Using these instructions on the same channel will cause a communication
protocol setting error (7FF2
Handling of simultaneous execution
 Dedicated instructions simultaneous execution error (7FF0
occurs in the dedicated instruction attempted later.
(However, simultaneous execution is available when channels to
be used are not the same.)
[When instructions are executed in order of INPUT
 Dedicated instructions simultaneous execution error (7FF0
occurs in the CSET instruction.
(However, simultaneous execution is available when channels to
be used are not the same.)
[When instructions are executed in order of CSET
 Simultaneous execution is available.
 The next instruction will be ignored until the active instruction has
been completed.
(However, simultaneous execution is available when channels to
be used are not the same.)
 Dedicated instructions simultaneous execution error (7FF0
occurs in the dedicated instruction attempted later.
).
H
MELSEC-Q
CSET]
INPUT]

: :
Available Not available
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)
H
)
H
)
H