Mitsubishi Electric CC-Link IE-NZ2GNSS2-8D User Manual page 108

When the D LINK LED turns off
When the D LINK LED turns off, check the following items.
Check item
Is the safety remote I/O module on the network operating normally?
Are Ethernet cables used compliant with the relevant standard?
Is the station-to-station distance 100m or less?
Does the cabling condition (bending radius) meet the specifications?
Is any Ethernet cable disconnected?
Does the switching hub in use normally operate?
Are other stations connected to the safety remote I/O module
normally operating?
Is the IP address of the safety remote I/O module duplicated with any
of other stations within the access range of CC-Link IE TSN?
Does another station between the master station and the safety
remote I/O module link up at the desired communication speed?
10 TROUBLESHOOTING
106
10.2 Checking the LEDs
Action
Connect the engineering tool to the master station, and check that the safety remote I/
O module is data-linked using the CC-Link IE TSN/CC-Link IE Field diagnostics.
 User's manual for the master station used
Replace the cable with an Ethernet cable compliant with the relevant standard.
 User's manual for the master station used
Change the station-to-station distance to 100m or less.
Refer to the manual for the Ethernet cable used, and correct the bending radius.
Replace the Ethernet cable.
• Check that the power supply of the switching hub is turned on.
• Check that the switching hub compliant with the specifications of the master module
in use is used. ( User's manual for the master station used)
• Disconnect the Ethernet cables and then reconnect them.
• Power off and on the switching hub.
• Check that the power supplies of the other stations are turned on.
• Disconnect the Ethernet cables and then reconnect them.
• Power off and on the switching hub.
Change the IP address so that no IP address duplication occurs in the access range of
CC-Link IE TSN.
Change the communication speed of another station or the switching hub to satisfy the
communication speed conditions.