Mitsubishi Electric Q80BD-J61BT11N, User Manual

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MELSEC
4 FUNCTIONS
(2) Communication between the master station and the intelligent
device station by transient transmission
The transient transmission is a transmission method that sends and receives
data in 1 : 1 mode by designating an opposite station at an arbitrary timing.
[When writing data to the buffer memory of the intelligent device
station using the mdSend function]
1) The program uses the mdSend function to write data from the master station
to the designated buffer memory of the intelligent device station.
2) When writing is completed, 0 is stored as a return value.
mdSend
Personal computer
Buffer memory
Master station Intelligent device station
(1st station)
1)
2)
Return value
CC-Link Ver.2 board
Program
[When reading data from the buffer memory of the intelligent device
station using the mdReceive function]
1) The program uses the mdReceive function to read data from the designated
buffer memory of the intelligent device station to the variables of the program
in the master station.
2) When reading is completed, 0 is stored as a return value.
mdReceive
Personal computer
Buffer memory
Master station
Intelligent device station
(1st station)
Value, return value
CC-Link Ver.2 board
Program
1)
2)