Ip Address Duplication Detection - Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual

IP address duplication detection

When one network has stations with the same IP address, duplication is detected.
Precautions
When IP address duplication is detected in the master station (error codes: 1802H, 3021H), change the IP address of the
corresponding station, and power off and on the master station, or reset it.
Detection in each station
When adding a slave station, if a station with the same IP address already exists, IP address duplication (error code: 2160H)
is detected in a station to be added, and data link cannot be performed. (Other stations continue data link.)
192.163.3.0 192.163.3.1
Precautions
When adding a slave station that is already connected (linked up) to the TSN switching hub for each TSN switching hub, IP
address duplication will not be detected in a station to be added. If IP address duplication (error code: 1802H) is detected in
the master station, disconnect the relevant slave station from the network. Otherwise, multiple stations with the same IP
address will exist on the same network, possibly leading to transient transmission being sent to an unintended station.
Detection in the master station
■At cyclic transmission startup
If the startup processing of cyclic transmission is executed by powering off and on the master station, when a station with the
same IP address is in the network, IP address duplication (error code: 3021H) is detected in the master station, and data link
cannot be performed.
192.163.3.0 192.163.3.1
■Cyclic transmission in progress
During cyclic transmission, IP address duplication is regularly checked in the master station. When there are overlapping IP
addresses, IP address duplication (error code: 1802H) is detected in the master station, and cyclic transmission cannot be
performed with the relevant slave station. (Other stations continue data link.)
Precautions
In any of the following combinations, IP address duplication is not detected when cyclic transmission starts up in the master
station.
• Ethernet device and CC-Link IE TSN device
• Ethernet device and Ethernet device
192.163.3.2 192.163.3.1
192.163.3.2 192.163.3.1
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4 FUNCTIONS
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4.6 RAS