Mitsubishi Electric MELSEC iQ-R Series User Manual page 76

Considerations for direct connection
When connecting to a LAN line
Do not perform communication by connecting to a LAN line directly.
This may increase the line load and affect the communications of other devices.
When connecting via a hub
Do not set the direct connection while MES interface module and the configuration personal computer are connected via a
hub.
When applying to the condition where communication cannot be performed
The direct connection may not be performed in the following situations.
If it cannot connect, review the settings of MES interface module and the configuration personal computer.
• When all the bits of the MES interface module IP address corresponding to the '0' parts of the configuration personal
computer subnet mask are ON or OFF
• MES interface module IP address: 64.64.255.255
• Configuration personal computer IP address: 64.64.1.1
• Subnet mask on the configuration personal computer side: 255.255.0.0
• When all the bits of the MES interface module IP address corresponding to the host address of each class for the
configuration personal computer IP address are ON or OFF
• MES interface module IP address: 64.64.255.255
• Configuration personal computer IP address: 192.168.0.1
• Subnet mask on the configuration personal computer side: 255.0.0.0
• The IP addresses of each class are as follows:
Class A: 0.x.x.x to 127.x.x.x, Class B: 128.x.x.x to 191.x.x.x, Class C: 192.x.x.x to 223.x.x.x
• Host addresses of each class are the '0' parts below.
Class A: 255.0.0.0, Class B: 255.255.0.0, Class C: 255.255.255.0
When the Windows firewall setting is enabled
Disable the Windows firewall setting.
When multiple IP addresses are enabled at the same time
The setting for direct connection cannot be set in the configurations where multiple IP addresses are enabled at the same
time as shown below.
• When an IP address is assigned to each Ethernet port of the configuration personal computer with multiple Ethernet ports
• When a wireless LAN setting is enabled in addition to Ethernet port of the configuration personal computer
• When multiple IP addresses are assigned to one network device (Ethernet port) of the configuration personal computer
5 SYSTEM CONFIGURATION
74
5.1 System Configuration