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4-50 3. MELSECNET/10
• This network system supports cyclic transmission and enables direct reading from link
devices (LB, LW, LX or LY). Also it is possible to directly write data to link devices that
are assigned by the control station.
• Transient transmission is also supported. It is possible to access to memory addresses
such as D or M that are usable with the ordinary 1 : 1 communications. All the memory
areas in the PLCs on NET/10 can be accessed.
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0
1FFF
1Mp1
1Ns2
1Ns3
1Ns4
0 ~ FF
100 ~ 1FF
200 ~ 2FF
300 ~ 3FF
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LW
0
FF
100
1FF
200
2FF
300
3FF
0
FF
100
1FF
200
2FF
300
3FF
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1Mp1
1Ns2
1Ns3
1Ns4
1Mp1
1Ns2
1Ns3
1Ns4
F1
F2
F3
F4
F5
F6
F1
F2
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F4
F5
F6
F1
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F5
F6
F1
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F4
F5
F6
F1
F2
F3
F4
F5
F6
F1
F2
F3
F4
F5
F6
Possible to write to
the assigned areas
Control station (1Mp1) Normal station (1Ns2)
Normal station (1Ns4) Normal station (1Ns3)
Example: When LW is assigned by the control station as shown
below:
Link device
Reading Writing
Possible to read
from any area
Note:
Transient transmission is slower
than cyclic transmission (2- or
3-times longer response time
than cyclic transmission). To
achieve high-speed
communications, use cyclic
transmission.
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F1
F2
F3
F4
F5
F6
F1
F2
F3
F4
F5
F6
F1
F2
F3
F4
F5
F6
Network No. 2
(Station that sends a request)
(Station that
sends a request)
Network No. 1