Mitsubishi Electric MELSEC iQ-R Series User Manual page 36

Readable/writable range
Data can be read or written from/to the Motion module mounted on the same base unit as the CPU module.
■ Read
All link devices of the Motion module can be specified. (Page 33 Specification method)
■ Write
The range that satisfies all of the following conditions can be specified.
• Area where data is sent to other stations and outside the link refresh range (Page 20 Communications using RX, RY,
RWr, and RWw)
• Within the link device range of the Motion module (Page 33 Specification method)
Ex.
CPU module
Y
Link refresh
Link refresh
(1) Out of the link refresh range (Data can be written here.)
(2) Area where data is sent to other stations
(3) Area for receiving data from other stations
When writing data to the area in the link refresh range, directly access the link device and write the same data
in the device of the CPU module.
<Bad example (Directly accessing the link refresh target only)>
• Link refresh overwrites the value.
<Good example (Directly accessing the link device as well as writing the same data to the device of the CPU
module)>
• The value written by the direct access is reflected.
1 FUNCTIONS
34
1.1 Cyclic Transmission
Motion module
RY
(1)
CPU module
MOV K20 J1\W100
W100
CPU module
MOV K20 J1\W100
MOV K20 W100
W100
(2)
(3)
W
Link refresh
300
W
Link refresh
20
Motion module
RWw
20 300 RWw100
Motion module
RWw
20
RWw100