Mitsubishi Electric CC-Link IE TSN User Manual page 149

Station is disconnected from the network
The following is the action to be taken when a station in data link is disconnected.
Check item
Is the ambient temperature for the module outside the specified
range?
Station is repeatedly disconnected and reconnected
The following lists the actions to be taken when a station in data link is repeatedly disconnected and reconnected.
Check item
Are Ethernet cables used compliant with the relevant standard?
Is the segment length 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?
Communications are unstable
The following lists the actions to be taken when link scan time or transmission delay time is long or when a transient
transmission timeout occurred.
Check item
CC-Link IE TSN side Is the ambient temperature for the
module outside the specified range?
Is there any NZ2GN-GFB error shown in
"Selected Station Communication Status
Monitor" of CC-Link IE TSN diagnostics?
Is there any noise affecting the system?
CC-Link IE Field Network Is the L ERR. LED of the NZ2GN-GFB
side turned off?
Is the ambient temperature for the
module outside the specified range?
Is there any NZ2GN-GFB error shown in
"Selected Station Communication Status
Monitor" of CC-Link IE Field Network
diagnostics?
Is there any noise affecting the system?
Action
Keep the ambient temperature within the specified range by taking action, such as
removing the heat source.
Action
Replace the cable with an Ethernet cable compliant with the relevant standard. (
Page 39 Wiring product)
Change the segment length to 100m or less.
Refer to the manual for the Ethernet cable used, and correct the bending radius.
Replace the Ethernet cable.
• Check if the switching hub in use conforms to standards.
• Power off and on the switching hub.
Action
Keep the ambient temperature within the specified range by taking action, such as
removing the heat source.
If an error is identified, perform a unit test.
( Page 144 Unit Test)
Check the wiring condition.
If it is on, refer to the following and take corrective actions.
Page 142 When the L ERR. LED turns on
Keep the ambient temperature within the specified range by taking action, such as
removing the heat source.
If an error is identified, perform a unit test.
( Page 144 Unit Test)
Check the wiring condition.
10 TROUBLESHOOTING
10.5 Troubleshooting by Symptom
10
147