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5.4 CC-Link IE Controller Network Module Access Function
5.4.5 Link data transfer processing time specifications
5
ACCESS VIA NETWORK MODULES
5.4.5 Link data transfer processing time specifications
This section describes cyclic transmission and processing time of CC-Link IE controller
network modules.
(1) Cyclic transmission function
This function allows periodic data communication between stations on the same
network, using link devices (LB/LW/LX/LY) of CC-Link IE controller network modules.
(a) Processing in cyclic transmission
In the following example, the link relay (B) data on the C Controller module side
are sent to the link relay (B) of another station's C Controller module.
1) B0 in the LB buffer (sending side) is set to ON.
2) By a link refresh, the B0 information in the LB buffer is stored in the link data
storage area (LB) of the sending side CC-Link IE controller network module.
3) By a link scan, the B0 information is stored in the receiving side CC-Link IE
controller network module's link data storage area (LB).
4) By a link refresh, the B0 information in the link data storage area (LB) is stored
in the LB buffer of the receiving side C Controller module.
5) B0 in the LB buffer (receiving side) is set to ON.
* 1 Refresh parameters must be set for link refreshes.
* 2 Network range assignment parameters must be set for link scans.
Figure 5.58 Link data transfer processing
Q06CCPU-V Q06CCPU-V-B
B0 turns ON.
1)
B0 turns ON.
5)
C Controller module
Internal link
device buffer
<LB buffer>
Link device
refresh cycle
C Controller module
Internal link
device buffer
<LB buffer>
Link device
refresh cycle
Link device
refresh
*1
*2 *2
2)
Link device
refresh
*1
4)
Link data
storage area
LB
CC-Link IE controller
network module
Link data
storage area
LB
CC-Link IE controller
network module
Link
scan
3)
Sending side Receiving side
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