4
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4.1 Cyclic Transmission Function
4.1.5 Assurance of cyclic data integrity
4
FUNCTIONS
(a) Link refresh
Link-refreshing the link devices that satisfy the conditions for 32-bit data
assurance will ensure the integrity of 32-bit data.
POINT
For assuring data of more than 32 bits, use the station-based block data
assurance or interlock programs.
(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.
POINT
For assuring data of more than 32 bits, use interlock programs.
Figure 4.26 Link refresh
Figure 4.27 Direct access to link devices
Station
No.1
32-bit
data 1
32-bit
data 2
32-bit
data 3
Station
No.2
Station
No.3
LW0
Link refresh in 32-bit units
Link refresh
LW1
LW2
LW3
LW6
LW7
Link register (LW)
CC-Link IE controller
network module
Link register (W)
CPU module
Link refresh
Link refresh
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
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