Download Q Corresponding Ethernet Interface Module User`s Manual (Basic)

2 SYSTEM CONFIGURATIONS
(b)
MELSEC-Q
The following functions are available for the MELSECNET/H remote I/O
station. For the QnA/A series compatible MELSECNET/10 remote I/O
station, only read/write of the intelligent function module buffer memory can
be performed.
Available function
Function
Read/write of device memory
Batch read, batch write
Random read, test (random write)
Monitor data registration, monitor
Multiple-block batch read, multiple-block batch write
Read/write of buffer memory
Read/write of Ethernet module buffer memory
Read/write of intelligent
function module buffer memory
Read/write of specified intelligent function module buffer memory
(c)
The following devices of the MELSECNET/H remote I/O station are
accessible by read/write of the device memory.
See the Reference Manual for a detailed explanation.
Device name
Device symbol
Device name
Device symbol
Special relay
SM
Link relay
B
Special register
SD
Data register
D
Input relay
X
Link register
W
Output relay
Y
Link special relay
SB
Internal relay
M
Link special register
SW
(d)
(Remote master station) QCPU
Other station access via the MELSECNET/H remote I/O station enables
access to the MELSECNET/H remote master station and access to the
MELSECNET/H remote I/O station.
1) In the following figure, access can be made from the external device to
the MELSECNET/H remote master station and to the MELSECNET/H
remote I/O station.
QJ71
LP21
-25
QJ72
station
LP25 QJ71
-3
-25 E71
MELSECNET/H
Remote I/O net
station
-1
QJ72
QJ71
LP25
E71
-25
2)
Access allowed
Access prohibited
External device
QJ72
station
QJ71 QJ71
(Remote I/O station)
LP25
-2
E71 E71
-25
Other station access via the following MELSECNET/H remote I/O
stations cannot be made.
• Other station access from the MELSECNET/H remote master station
via the Ethernet module mounted on the MELSECNET/H remote I/O
station. (Station 1 in the above figure)
• Other station access via between the Ethernet modules. (Station 2 in
the above figure)
2 This function is available for the MELSECNET/H remote I/O station of function
version D and later.
GX Developer Version 8.18U or later is required to use the function.
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