Message Communication - Mitsubishi MELSEC-Q Series User Manual

4
FUNCTIONS

4.4.1 Message communication

The C Controller module can make message communication (message transmission/
reception) by a user program.
Messages can be transferred among the following modules via a MELSECNET/H module
controlled by the C Controller module.
(1) Message transmission
(2) Message reception
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4.4 MELSECNET/H Module Access Function
4.4.1 Message communication
• C Controller module on other station
• Programmable controller CPU
• Personal computer with the MELSECNET/H board built-in
Messages are sent with the user program in which the data link functions for message
transmission are used.
Refer to this section (3) for the data link functions for message transmission.
Messages are received with the user program in which the data link functions for
message reception are used.
The C Controller module has the internal buffer for message reception.
The data stored in this internal receive buffer are read out in message reception.
Refer to this section (3) for the data link functions for message reception.