Mitsubishi MELSEC LJ71C24, User Manual

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App. - 57 App. - 57
APPENDIXES
(2) Data communication procedure when the C24 is connected to the
head module
The control is performed using the network parameter setting (refresh parameter
setting) of the master station and the C24 auto refresh setting of the intelligent
device station (head module).
When the C24 is connected to the head module, dedicated instructions cannot
be used.
To communicate with an external device, set data to be sent to the head module
device or the C24 buffer memory in advance, and turn on the Y signal.
The following shows the send data flow in data communication between the C24
and external devices, based on the system configuration example in Section 6.2
(1).