Mitsubishi MELSEC L Series User Manual page 352

Precaution when using the BUFRCVS instruction
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(1) Use the BUFRCVS instruction when receiving data via an interrupt program.
(2) Simultaneous execution of dedicated instructions
The following table lists the handling for when executing another instruction during
execution of the BUFRCVS instruction or executing the BUFRCVS instruction
during execution of another instruction in the same channel.
Availability of
1
Instruction simultaneous
execution
OUTPUT
PRR
INPUT
BIDOUT
BIDIN
CSET
PUTE
GETE
BUFRCVS
SPBUSY
UINI
1 Because the dedicated instructions listed below use a different
communication protocol from that for the BUFRCVS instruction, they are
not used in the same channel.
• ONDEMAND
• CPRTCL
(3) The device storing data received via the BUFRCVS instruction must have an area that
is large enough to store the maximum size of data received from the external device.
If an area large enough to store the maximum size of data received from the external
device is not secured, the data following the storage device will be overwritten.
Handling of simultaneous execution
INPUT instruction and BUFRCVS instruction cannot be used at the
same time.
(However, simultaneous execution is available when channels to be
used are not the same.)
BIDIN instruction and BUFRCVS instruction cannot be used at the
same time.
(However, simultaneous execution is available when channels to be
used are not the same.)
17 DEDICATED INSTRUCTIONS
⎯
⎯
⎯
: Available : Not available
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