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MELSEC-Q
10 DEVICES
(3) Differences between "link direct devices" and "link refresh"
The differences between "link direct devices" and "link refresh" are shown in
Table 10.4 below.
Table 10.4 Differences Between "Link Direct Devices" and "Link Refresh"
Item Link Direct Device Link Refresh
Link relay J \K4B0 or later B0 or later
Link register J \W0 or later W0 or later
Link special relay J \K4SB0 or later SB0 or later
Program
notation
method
Link special register J \SW0 or later SW0 or later
Number of steps 2 steps 1 step
Network module access range
All network module link
devices
Refresh parameter
designated range
Access data guarantee range Word units (16 bits)
REMARK
1) For details on the MELSECNET/H network system, refer to the Q Corresponding
MELSECNET/H Network System Reference Manual.
2) For details on network parameters, common parameters, and network refresh
parameters, refer to the following manuals:
• Detailed information : Q Corresponding MELSECNET/H Network System
Reference Manual
• Setting procedures : GX Developer Operating Manual, Windows Version