Mitsubishi MELSEC L Series User Manual page 372

Functions
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(1) This instruction transmits the user frame data using the non procedure protocol of
the Q series C24 as designated by Un, according to the control data stored in the
device designated by (S) and succeeding devices, as well as the transmission
user frame designation area of the Q series C24.
(2) Simultaneous execution of dedicated instructions
The following table lists the handling for when executing another instruction during
execution of the PRR instruction or executing the PRR instruction during
execution of another instruction in the same channel.
Availability of
1
simultaneous
Instruction
execution
PRR
INPUT
OUTPUT
CSET
PUTE
GETE
BUFRCVS
SPBUSY
UINI
1 Because the dedicated instructions listed below use a different
communication protocol from that for the PRR instruction, they are not
used in the same channel.
• ONDEMAND, BIDOUT, BIDIN
• CPRTCL
If the dedicated instructions above are used in the same channel with the
PRR instruction, the communication protocol setting error (7FF2
(3) Whether the PRR instruction was completed normally or abnormally can be
checked with 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 PRR instruction is
completed, and turns off at the next END processing.
(b) Status display device at completion
Turns on and off depending on the completion status of the PRR instruction.
• Normal completion
• Abnormal completion: Turns on at the END processing of the scan where
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.
: Stays off and does not change.
the PRR instruction is completed, and turns off at the
next END processing.
17 DEDICATED INSTRUCTIONS
⎯
⎯
: Available : Not available
) occurs.
H
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)
H
)
H