Mitsubishi Electric MELSEC Q Series Reference Manual page 80

(b) Direct access to link devices
Directly accessing link devices that satisfy the conditions for 32-bit data assurance will ensure the integrity of
32-bit data.
For assuring data of more than 32 bits, use interlock programs.
(2) Station-based block data assurance
Since link refresh is performed by handshaking between the CPU and CC-Link IE Controller Network modules,
cyclic data integrity is assured in units of stations.
Set the station-based block data assurance in "Supplementary Setting" of "Network Range Assignment" of the
control station. (
78
BMOV J1\W0 W0 K12
CPU module
Link register (W)
W0
W1
W2
W3
W6
W7
WB
Page 201, Section 6.3.6)
CPU module
Link register (W)
Station
No.1
Station
No.2
Link refresh Link refresh
Station
No.3
Station
No.4
32-bit
data 1
32-bit
data 2
32-bit
data 3
CC-Link IE Controller
Network module
Link register (LW)
Station
Data assured
No.1
Station
Data assured
No.2
Station
Data assured
No.3
Station
Data assured
No.4
CC-Link IE Controller
Network module
Link register (LW)
LW0
32-bit
data 1
LW1
LW2
32-bit
data 2
LW3
LW6
32-bit
data 3
LW7
LWB