Mitsubishi Electric L02SCPU User's Manual And Reference page 321

(b) Reading
The reading of the link device range of the CC-Link IE Field Network master/local module can be done.
The writing/reading by the link direct device can be done only for a single CC-Link IE Field Network
master/local module per network number. For instance, when more than two CC-Link IE Field Network
master/local modules are connected with the same network number, the writing/reading by the link direct
device can be done only for the network module with the smaller slot number.
Ex. When the CC-Link IE Field Network master/local modules (Station No.1 and Station No.2) are connected
as Network No.1 as shown below, the usage of the link direct device is allowed only for the network
module of Station No.2.
(4) Difference between the link direct device and the link refresh
The following table shows the difference between the link direct device and the link refresh
Notation in the program
Number of steps
Access range of the CC-Link IE Field Network master/local
module
Guaranteed range of access data
Remark
For the network parameters, common parameters, and refresh parameters, refer to the following.
MELSEC-L CC-Link IE Field Network Master/Local Module User's Manual
Network No.1
Station Station
No.2 No.1
Writing/reading using link
direct devices allowed
Item
Link register
Link special relay
Link special register
Writing/reading using link
direct devices not allowed
Link direct device
J\W0 to
J\SB0 to
J\SW0 to
2 steps
J\0 to 3FFF
2 words (32 bits) unit
CHAPTER 5 DEVICES
Link refresh
W0 to
SB0 to
SW0 to
1 step
The range that is set in the
Refresh Parameter
319
5