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(5) When the ERR. LED turns on or flashes
Check item
Is the transmission speed/mode setting switch set
within the setting range?
Are there multiple CC-Link master stations on the
same line?
Is the CC-Link cable normal?
Is there any noise affecting the system?
Is the same station number used for multiple CC-Link
stations?
If the ERR. LED still turns on or flashes even after the above items have been checked, connect the engineering
tool to the master station. Then identify the cause of the error using the CC-Link IE Field Network diagnostics,
and take a corrective action. ( Page 78, Section 9.3)
(6) When the L ERR. LED turns on or flashes
Check item
Is the CC-Link cable normal?
Is there any noise affecting the system?
Has the setting for the transmission speed/mode
setting switch been changed while the module is on?
Corrective action
Set the transmission speed/mode setting switch within the setting
range.
Change the configuration so that only one CC-Link master station is
connected on one line.
• Check the cable for disconnection, short circuit, incorrect wiring,
poor contact, and usage not meeting the specifications
(transmission distance, station-to-station distance, coexistence of
different types of cables, and FG connection).
• Check if a transmission cable other than a CC-Link dedicated
cable is used.
• Check that a terminating resistor is connected.
Check the wiring condition.
Set a unique station number for each CC-Link remote station.
Corrective action
• Check the cable for disconnection, short circuit, incorrect wiring,
poor contact, and usage not meeting the specifications
(transmission distance, station-to-station distance, coexistence of
different types of cables, and FG connection).
• Check if a transmission cable other than a CC-Link dedicated
cable is used.
• Check that a terminating resistor is connected.
Check the wiring condition.
After setting the transmission speed/mode setting switch, turn on
the module.
CHAPTER 9 TROUBLESHOOTING
93
9
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Table of Contents
Troubleshooting
