Mitsubishi Electric MELSEC iQ-R Series User Manual page 93

■Operation when the "Number of Multi-Transaction Queues For PLC Receiving" has been
configured multiple times
Messages of the number of specified by "Number of Multi-Transaction Queues For PLC Receiving" are interleaved
(accumulated). Interleaved messages are processed after transactions being processed are completed.
Programmable
controller CPU
Receive
notification A
detection
Transmission request
relay A on
Receive
notification B
detection
Thereafter, the same
processing in proportion
to queued (accumulated)
content continues
Precautions
When the Number of Multi-Transaction Queues For PLC Receiving becomes full, messages that come later are aborted.
Device SECS/GEM communication
Receive notification A
Queuing
(accumulation)
Receive notification B
software
Primary A
Primary B
Primary C
Transmission request
A detection
Secondary A
Implementation of
processing of queued
(accumulated) content
7 BASIC FUNCTIONS
7.7 Option Setting
Host
7
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