Link Direct Devices (J \ ) - Mitsubishi Electric MELSEC-Q Series User Manual

10 DEVICES

10.4 Link Direct Devices (J \ )

Basic model QCPU
B 0
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(1) Definition
(a) At END processing, a data refresh (data transfer) operation occurs between
the Basic model QCPU and the MELSECNET/H network system modules.
Link direct devices are used at that time to directly access the link devices
in the MELSECNET/H network modules.
(b) Designation method
• Link direct devices are designated by network No. and device No.
Designation method: J
• For link register 10 (W10) of network No.2, the designation would be
"J2\W10"
• For a bit device (X, Y, B, SB), digit designation is necessary.
Designation example : J1\K1X0, J10\K4B0
(2) Designation range
Link direct device designations are possible for all the link devices in network
modules.
Device outside the range specified by the network refresh
parameters can also be designated.
(a) Writing
1) Writing is executed within that part of the link device range set as the
send range in the common parameters of the network parameters that
is outside the range specified as the "refresh range" in the network
refresh parameters.
Network module
LB 0
Refresh
range
Writing range
\
Device No.
Input...........................X0
Output........................Y0
Link relay.................. B0
Link register...............W0
Link special relay.......SB0
Link special register ..SW0
Network No.(1 to 255)
K100 J2W10
MOVP
Link range
send range
MELSEC-Q
Network modules at network No.2
W 0
W10
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