Mitsubishi Electric MELSEC-Q Series - Page 80

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(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. ( Page 201, Section 6.3.6)
BMOV J1\W0 W0 K12
32-bit
data 1
32-bit
data 2
32-bit
data 3
32-bit
data 1
32-bit
data 2
32-bit
data 3
LW0
LW1
LW2
LW3
LW6
LW7
LWB
W0
W1
W2
W3
W6
W7
WB
Link register (LW)
CC-Link IE Controller
Network module
Link register (W)
CPU module
Station
No.1
Station
No.2
Station
No.3
Station
No.4
Data assured
Data assured
Data assured
Data assured
Station
No.1
Station
No.2
Station
No.3
Station
No.4
Link register (LW)
CC-Link IE Controller
Network module
Link register (W)
CPU module
Link refresh
Link refresh