Table of Contents
Advertisement
12.4.6
IP communications cannot be performed using the IP packet
transfer function
Before troubleshooting the problem as listed below, execute the IP communication test and take corrective actions
according to the error code. (
If the problem cannot be solved using the IP communication test, execute the actions listed below.
Check item
Is the IP address of the connected Ethernet device correct?
Is the IP address already in use?
Has a communication time over error occurred in the IP
communication test?
Have the routing parameters correctly been set?
Is the network number of the Ethernet device side (the third
octet of the IP address) the same as that of modules and
another Ethernet device? (This applies only when the request
source external device, request destination external device, and
modules between them have the same first and second octets
of the IP address.)
Is the CC-Link IE Field Network gateway setting correct? (This
applies only when the request source device, request
destination device, and modules between them do not have the
same first and second octets of the IP address.)
Are settings configured in modules connected to the Ethernet
device correct?
• First and second octets of the IP address
• Subnet mask pattern
• Default router IP address
Is the firewall enabled on the Ethernet device?
Page 156, Section 8.3.3)
Set an IP address meeting the IP address setting rules.
(
Page 149, Section 8.3.2 (1))
• For the Ethernet device, set the IP address different from that of other
devices on the network, such as a CPU module, master/local module,
and Ethernet adapter module.
• Disconnect the Ethernet device from the line and execute the Ping
command to the IP address of the disconnected Ethernet device. If a
response is received even though the device is disconnected, the IP
address is already in use. Change the IP address.
Check "Relay Network No." in the routing parameters.
• Check and correct the routing parameters. (
8.3.2 (2))
• When the first and second octets of the IP address are the same for
the request source device, request destination device, and modules
between them, set the routing parameters so that the third octet of the
IP address of the Ethernet device is used as "Target Network No.".
Change the network number of the Ethernet device side (the third octet
of the IP address) to the one different from that of modules and another
Ethernet device.
IP address
Ethernet
192.168.
CC-Link
IE Field
Network
Change the network numbers to those not used for other stations.
• Check and correct the setting in the module supporting the CC-Link IE
Field Network gateway setting. (
supporting the CC-Link IE Field Network gateway setting used)
• Use the routing parameters to set the communication route to the CC-
Link IE Field Network gateway setting station.
Check and correct the settings.
Check and correct the firewall settings on the Ethernet device.
Ex.
Is a response to the Ping command (ICMP echo request) enabled?
CHAPTER 12 TROUBLESHOOTING
Action
3
3
.1
192.168.
.30
192.168.1.1
192.168.1.125
(Automatically assigned)
(Automatically assigned)
Master station
Station No.1
Network No.1
Network No.3
Manual for the module
12
Page 152, Section
2
2
192.168.
.30
192.168.
.1
192.168.1.2
Station No.2
Network No.2
437
Advertisement
Table of Contents
Troubleshooting
