Mitsubishi Electric RFID ECL2-V680D1 User Manual page 117

7. TROUBLESHOOTING
Was the station number setting switch or transmission
speed setting switch changed while the system was
powered?
Has the station number setting switch or transmission
speed setting switch failed?
Did a worker forget to attach a terminating resistor?
Has the module or CC-Link dedicated cable been affected
by noise?
Are the station number and transmission speed settings
7
correct?
Has a CRC error occurred?
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(4) When the "L ERR." LED flashes at a regular interval (0.4 s interval)
Check Item
(5) When the "L ERR." LED flashes at an irregular interval
Check Item
(6) When the "L ERR." LED turns on
Check Item
Description
Properly set the setting switch, and turn ON the reset
switch.
If the "L ERR." LED started flashing even though a switch
setting change was not made during operation, a
hardware error may have occurred. Please consult with
your local representative or sales office, explaining a
detailed description of the problem.
Description
Check if a terminating resistor is attached.
Be sure to tighten the terminating resistor within the
specified torque range (0.42 to 0.58Nm) for the terminal
screw.
If a terminating resistor is not connected, connect the
resistor and turn the power supply ON again.
Ground both ends of the shield wire of the CC-Link
dedicated cable using class D (type 3) grounding via the
SLD and FG of each module. Securely ground the FG
terminal of the module.
When pipe wiring is performed, securely ground the pipe.
Description
Set the correct station number and transmission speed
settings.
The module or the CC-Link dedicated cable may be
affected by noise. Ground both ends of the shield wire of
the CC-Link dedicated cable using class D (type 3)
grounding via the SLD and FG of each module. Securely
ground the FG terminal of the module.
When pipe wiring is performed, securely ground the pipe.
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