Mitsubishi Electric QJ71C24N User Manual page 298

10 DEDICATED INSTRUCTIONS
Function
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(1) The function sends data stored in the device designated in (S2) and succeeding
devices according to the control data of the device designated in (S1) and
succeeding devices, via the bidirectional protocol of the module designated in Un.
(2) Simultaneous execution of dedicated instructions
The following table lists the handling for when executing another instruction during
execution of the BIDOUT instruction or executing the BIDOUT instruction during
execution of another instruction in the same channel.
Availability of
1
Instruction simultaneous
execution
BIDOUT
BIDIN
CSET
PUTE
GETE
BUFRCVS
SPBUSY
UINI
1 Because the dedicated instructions listed below use a different
communication protocol from that for the BIDOUT instruction, they are not
used in the same channel.
• ONDEMAND, OUTPUT, PRR, INPUT, CPRTCL
If the dedicated instructions above are used in the same channel with the
BIDOUT instruction, the communication protocol setting error (7FF2
occurs.
(3) Whether a BIDOUT instruction was completed normally or abnormally can be
checked by the completion device ((D)) or status display device at completion
((D)+1).
(a) Completion device: Turns on at the END processing of the scan where the
(b) Status display device
at completion
Handling of simultaneous execution
 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.
(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.
BIDOUT instruction is completed, and turns off at the next
END processing.
: Turns on and off depending on the completion status
of the BIDOUT instruction.
• Normal completion
• Abnormal completion: Turns on at the END
MELSEC-Q


: Available : Not available
H
: Off with no change.
processing of the scan
where the BIDOUT
instruction is completed, and
turns off at the next END
processing.
10 - 16
)
H
)
H
)