Mitsubishi Q00JCPU User Manual page 525

7
COMMUNICATION
PORTS OF CPU MODULE
(b) Precautions
USING
1) Select "Ethernet board" for "PC side I/F".
2) Select "PLC module" for "PLC side I/F".
Check the "Ethernet port direct connection" checkbox on the detailed setting
screen as shown in Figure 7.15.
Figure 7.15 PLC side I/F Detailed setting of PLC module screen
3) Make the setting for "Other station".
1) When the CPU module is connected to LAN line, do not perform
communication using direct connection. If performed, the communication may
put a load to LAN line and adversely affect communications of other devices.
2) If the "Disable direct connection to MELSOFT" checkbox is checked on the
Built-in Ethernet port tab of PLC parameter in GX Developer, the direct
connection is not available.
3) The system configuration that connects a Built-in Ethernet port QCPU with an
external device using a hub as shown in Figure 7.16 is not regarded as direct
connection since the hub is used. Do not check the "Ethernet port direct
connection" checkbox on the detailed setting screen.
Figure 7.16 Non-direct connection
4) Under the following conditions, direct connection communication may not be
available. In that case, check the setting of the CPU module and/or personal
computer.
• In the CPU module IP address, bits corresponding to "0" in the personal
computer subnet mask are all ON or all OFF.
[Example] CPU IP address: 64.64.255.255
Personal computer IP address: 64.64.1.1
Personal computer subnet mask: 255.255.000.000
• In the CPU module IP address, bits corresponding to the host address for
each class in the personal computer IP address are all ON or all OFF.
[Example] CPU module IP address: 64.64.255.255
Personal computer IP address: 192.168.0.1
Personal computer subnet mask: 255.255.000.000
7.3 GX Developer Direct Connection (Simple Connection)
BUILT-IN ETHERNET
Hub
Ethernet cable
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