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MELSEC-Q
3 WHEN COMMUNICATING WITH MELSECNET/H, MELSECNET/10
RELAY
3 WHEN COMMUNICATING WITH MELSECNET/H, MELSECNET/10 RELAY
The Ethernet network system can be in the same class as the MELSECNET/H,
MELSECNET/10 network system. External device or Ethernet module installed QCPU
station can give access to the other stations via Ethernet networks and
MELSECNET/H, MELSECNET/10 within the MELSECNET/H, MELSECNET/10
specification range.
In this chapter, the MELSECNET/H, MELSECNET/10 relay communication functions
are described, to perform data communication with other station PLC CPUs via
Ethernet module or MELSECNET/H, MELSECNET/10 from the QCPU at external
device or Ethernet module installed QCPU station.
3.1 MELSECNET/H, MELSECNET/10 Relay Communication
The MELSECNET/H, MELSECNET/10 relay communication is a function to perform
the following data communication to the other station PLC via Ethernet or
MELSECNET/H, MELSECNET/10 from the external device or Ethernet module
installed QCPU station.
By setting the parameter described in Section 3.3, the other station access becomes
possible with the MELSECNET/H, MELSECNET/10 relay communication function.
Communication range
Function that can be
used for
communication
When using this function
When not using this function
Communication
request source
Function reference
section
Communication using
the MC protocol
External device
Reference Manual
Communication using
the data link
instructions
Network module
installed QCPU
station
Chapter 4
Communication with
other stations using
GX Developer
Possible to read/write data
from/to other station's PLC,
which is the access request
destination, from an access
source device via multiple
MELSECNET/H,
MELSECNET/10 and
Ethernet network systems.
Only possible to read/write
data from/to the PLCs of other
stations in the same Ethernet
or MELSECNET/H,
MELSECNET/10 network
system as that of the station
in which the Ethernet module
is installed.
(Example) Only access 1)
shown in the diagram in
Section 3.2.1 is possible.
GX Developer
GX Developer
Manual
3
Содержание QJ71E71-100 Series
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