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6 Ethernet COMMUNICATION FUNCTIONS
6.1 Connection with MELSOFT product or GOT
Precautions
■
Connection with LAN
Do not connect with LAN and set the direct connection. Since the data will be sent to all the target devices on the LAN, this
may increase the line load and affects communication with other target devices.
■
Connections that are not a direct connection
• Do not use a configuration in which C Controller module and target devices are connected via hub. Direct connection will
not be established when the devices are connected via hub.
• If two or more Ethernet ports are set to "Enable" in the network setting on the personal computer, a direct connection
cannot be established. Review the setting of the personal computer so that only the Ethernet port for the direct connection
is set to "Enable", and the other Ethernet ports are set to "Disable".
■
Conditions that cannot communicate directly
A direct connection may not be established if any of the following conditions are met. In this case, review the settings.
The examples of the error occurrence are as follows:
• When all the bits of the C Controller module-side IP address that correspond to 0 part of the personal computer-side subnet
mask are ON or OFF
• When all the bits of the C Controller module-side IP address that correspond to the host address of each class of the
personal computer-side IP address are ON or OFF
IP addresses of each class are as follows:
• Class A: 0.0.0.0 to 127.255.255.255
• Class B: 128.0.0.0 to 191.255.255.255
• Class C: 192.0.0.0 to 223.255.255.255
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
Item
Description
IP address of a C Controller module
64.64.255.255
IP address of a personal computer
64.64.1.1
Subnet mask of a personal computer
255.255.0.0
Item
Description
IP address of a C Controller module
64.64.255.255
IP address of a personal computer
192.168.0.1
Subnet mask of a personal computer
255.0.0.0
Содержание MELSEC iQ-R C R12CCPU-V
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