Mitsubishi QJ71MB91 User Manual page 121

5
FUNCTIONS
(d) The Broadcast delay times out
Master
(QJ71MB91)
Slave 1
Slave 2
Slave 3
(e) Receiving response message from slave
Master
(QJ71MB91)
Slave
When the Broadcast delay times out after transmission of a request message, it
means normal completion, and the corresponding bit in the buffer memory's
automatic communication operating status storage area turns OFF. (address:
0C20 to 0C21 /0C22 to 0C23
H H H
Broadcast delay
Request
message
Request
message
processing
Request
message
processing
Request
message
processing
Figure 5.5 Timeout of Broadcast delay
When slave processing is complete, a response message is received.
Request
message
Request
Response
message
Message
processing
Figure 5.6 Reception of response message
)
H
Broadcast delay times out
Request
message
Request
message
processing
Request
message
processing
Request
message
processing
Receiving response message
from the slave
Receiving
Request
response
message
message
Request
message
processing
5.2 Master Function
5.2.1 Automatic communication function
Receiving
response
message
Response
Message
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