Mitsubishi MELSEC-A Series Reference Manual page 120

6. LlNK DATA SEND/RECEIVE PROCESSING
AND PROCESSING TlME
(1) *1............... The link refresh will be executed only after the execution of an END
(2) The link refresh timing of the following modules is the same as that of the CPU
(3) A link scan does not influence the processing time (for example, scan time for the
(4) The processing time (scan time) of the master and local stations is increased by
(5) Link data communication is possible in any of the following ACPU states: RUN,
POINT
instruction in a sequence program when the programs steps between
step 0 and the END instruction are set by the sequence program as a
link-refresh inhibited zone.
The link-refresh inhibited zone can be set by EI/DI instruction.
For details of EI/DI instruction, refer to IB-66250 in the ACPU
Programming Manual (Common Instructions).
module.
• A1SJ71AT21B • AJ71AT21B
• A1SJ71AP21/R21 • AJ71AP21/R21
• AJ71AP21-S3 • AJ71P22/R22
• AJ71AP22/R22
ACPU) of a master station or local station, since link scan is executed in parallel
with master and local station processing.
the link refresh time.
The following chart shows an example of executing link refresh processing after
END processing.
STOP, PAUSE, STEP-RUN.
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