Conditions That Cannot Communicate With Direct Connection - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

■Conditions that cannot communicate with direct connection

Communication with a direct connection may be disabled if the following conditions apply. If connection is not possible, review
the settings for the Ethernet-equipped module and personal computer.
• When all bits of the IP address for the Ethernet-equipped module that correspond with the 0 section of the subnet mask for
the personal computer are on or off
Ex.
IP address for the Ethernet-equipped module: 64.64.255.255
IP address for the personal computer: 64.64.1.1
Subnet mask for the personal computer: 255.255.0.0
• When all bits of the IP address for the Ethernet-equipped module that correspond with the host address of each class in the
IP address for the personal computer are on or off
Ex.
IP address for the personal computer: 192.168.0.1  192.x.x.x., class C and the host address is the fourth octet.
Subnet mask for the personal computer: 255.0.0.0
IP address for the Ethernet-equipped module: 64.64.255.255  each bit turns on because of the fourth octet is 255
The IP address for each class are as follow.
• 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
The host address for each class is the 0 section shown below.
• Class A: 255.0.0.0
• Class B: 255.255.0.0
• Class C: 255.255.255.0
1 FUNCTIONS
26
1.1 Connection with MELSOFT Product and GOT