10 - 8 10 - 8
MELSEC-Q
10 DEDICATED INSTRUCTIONS
Function
(1) Data stored in the device designated in (S2) and succeeding devices are sent
according to the control data of the device designated in (S1) and succeeding
devices, via the non procedure protocol of the module specified in Un.
b15 b0
to
(S2) + 0
+ 1
+ 2
Channel 1
Channel 2
QCPU
Q series C24
Send
Send
Channel to be
used is set by
the control data.
(2) Simultaneous execution of dedicated instructions
The following table shows the handling for when executing another instruction
during execution of the OUTPUT instruction or executing the OUTPUT instruction
during execution of another instruction in the same channel.
Instruction
1
Availability of
simultaneous
execution
Handling of simultaneous execution
OUTPUT
• 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.)
INPUT
⎯
PRR
CSET
• Dedicated instructions simultaneous execution error (7FF0
H)
occurs in the dedicated instruction attempted later.
(However, simultaneous execution is available when channels to
be used are not the same.)
PUTE
GETE
BUFRCVS
SPBUSY
⎯
UINI
• Dedicated instructions simultaneous execution error (7FF0
H)
occurs in the dedicated instruction attempted later.
:
Available : Not available
1 Since the dedicated instructions shown below use a different
communication protocol from that for the OUTPUT instruction, they are not
used in the same channel.
• ONDEMAND, BIDOUT, BIDIN, CPRTCL
If the dedicated instructions shown above are used in the same channel
with the OUTPUT instruction, the communication protocol setting error
(7FF2
H) occurs.
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