Cyclic Transmission; Data Flow And Link Device Assignment - Mitsubishi Electric MELSEC-Q Series User Manual

8.3 Cyclic Transmission

Data communication is available periodically among stations on the same network. Link
devices (RX, RY, RWr, and RWw) are used.

8.3.1 Data flow and link device assignment

CPU
module
Device
7)
Sequence
scan
Link refresh
Device
RY,RWw
2)
Sequence
scan
Link refresh
M0
1)
Y
*1: The range from the station No.1 to 4 is valid in the 4-axis module, and the range from the station No.1 to 8 is valid in the 8-axis module.
One-to-one communication is possible between the Simple Motion module (master
station) and the connected device of the station No.17 to 120.
The status information of the link devices (RY and RWw) of the master station is output
to the connected device of the station No.17 to 120, and the input status information
from the connected device of the station No.17 to 120 is stored in the link devices (RX
and RWr) of the master station.
The connected devices of the station No.1 to 16
Motion module. It cannot communicate with the link devices of the Simple Motion
module.
(Note-1): The range from the station No.1 to 4 is valid in the 4-axis module, and the range from the station
No.1 to 8 is valid in the 8-axis module.
Simple Motion
module
Internal memory
(b)
Station
No.1
(b)
Station
RX,RWr
*1
No.16
6)
Station
No.17
6)
Station
No.120
Operation
cycle
Internal memory
(a)
Station
No.1
(a)
Station
*1
No,16
3)
Station
No.17
3)
Station
No.120
Station No.1 Station
Internal *1
No.16
memory
Internal
Station
memory
No.1
Station
*1
No.16
Internal
memory
Internal
memory
Station
No.1
Station
*1
No.16
Area where data is sent to
other stations
8 - 4
Chapter 8 FUNCTIONS
(Note-1)
are controlled by the Simple
Station Station
No.17 No.120
RX,RWr
Station
No.17
RX,RWr
Station
No.120
RY,RWw
Station
No.17
RY,RWw
Station
No.120
5)
External device
4)
External device