Communication Error (Err. Led Is On/Flashing); User Program Cannot Access Cpu Modules Other Than Qcpu (Q Mode) And Melsec Iq-R Series Cpu Modules - Mitsubishi Electric MELSEC SW1DNC-CCIEF-B User Manual

Communication error (ERR. LED is ON/Flashing)

When the ERR.LED is ON/flashing due to the communication error, check the following items.
ERR.LED is ON
One of the following error occurred.
• An error is detected in all stations.
• Stations with same station number exist on the network.
• Network parameters are corrupted.
• Network parameters do not match the installation status. (Reserved station specification, number of connected stations,
network number etc.)
Check the following items.
Item
Is the network parameter set according to the actual board
installation status?
Has a board error occurred?
Is the board hardware operating normally?
If the problem is not solved by the above corrective actions, refer to the following section and contact us.
Page 166 Information Required for Inquiries
ERR.LED is flashing
The error station is detected. Check the following items.
Item
Is a disconnected station displayed in the network configuration
of the CC-Link IE Field Network diagnostics?
(Page 119 Displaying diagnostics screen)
"Total stations" set for network parameter of the master station is
different from the number of slave stations connected to the
network.
If the problem is not solved by the above corrective actions, refer to the following section and contact us.
Page 166 Information Required for Inquiries
User program cannot access CPU modules other than QCPU (Q
mode) and MELSEC iQ-R series CPU modules
The 64-bit version user program cannot access CPU modules other than QCPU (Q mode) and MELSEC iQ-R series CPU
modules.
Use 32-bit version user program.
16 TROUBLESHOOTING
152
16.5 Troubleshooting for Data Link
Corrective action
Check the parameter settings. (Page 99 Setting Network Parameter)
Perform the board test. (Page 160 Checking operations with board diagnostics)
Perform the board standalone test. (Page 161 Board test)
Corrective action
Perform a troubleshooting on the disconnected station for when D LINK LED is OFF or
flashing. (Page 162 D LINK LED is turned OFF or flashing)
Correct "Total stations" to match with the number of slave stations.