Mitsubishi QJ71E71-100 Series, Руководство пользователя

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MELSEC-Q
3 WHEN COMMUNICATING WITH MELSECNET/H, MELSECNET/10
RELAY
a) : For communication request message transmission b) : For response message
transmission
(4) Use-together system
(a) Overview of the Use-together system
1) This method uses both the IP address computation system and the table
exchange system.
2) This method can be designated when accessing other station with the same
Network No., accessing other station in other MELSECNET/H,
MELSECNET/10 network system or accessing an Ethernet with different
Network No., and relaying from the MELSECNET/H, MELSECNET/10 to
the Ethernet network system.
3) The set target Ethernet module can be installed either at a
communication request source station, communication relay station, or
communication request destination station.
(b) Conversion processing of the Use-together system
1) When a communication request message (command frame) to access
other station is received, the communication request message is sent to
the next station obtained by the table exchange system at first.
2) If the IP address of the Ethernet module cannot be obtained by the table
exchange system, the IP address is obtained by the IP address
computation system in order to send the communication request message.
3) The response message (response) to the communication request
message is returned based on the return IP address and the data in the
conversion table or the stored data.
REMARK
The relationship between the Convert Format and definition of the Ethernet module
installed station is as follows.
Ethernet module installed station definition
Communication relay station
Conversion
method
Communication request source station
Relay receiving station Relay sending station
Communication request
destination station
Automatic response system
(
1
)
(
1
)
IP Address computation system
Table exchange system
Use-together system
: Can be designation : Cannot be designated
1 For the external device that completed the communication, the station can be a
communication request source station or a relay sending station.
Ethernet
Ethernet
Communication relay receiving station Communication relay sending station
Communication request
source station
Automatic response system
can be set
E71 QCPU
(Communication relay station)
E71 QCPU
E71 QCPU E71
Communication request
destination station