- 106 -
No.JXC#-OMX0009-A
Problem
No.
Problem
Possible
causes
Investigation method and
location of possible
causes
Countermeasures
1
LED is OFF.
Power fault
Is the green LED on the
controller ON?
Check the voltage and current supplied to
the controller.
⇒
5. External Connections
⇒
6. Details of Power Supply Plug
Incorrect
wiring
Is the wiring connected
correctly?
Check if the wiring is connected correctly or
if there is broken wire or short-circuit by
referring to this Operation Manual. Correct
the wiring and check that the input/output of
each signal is correct.
Separate the power supply for the
CN1controller and the CN5 I/O signal power
supply.
⇒
5. External Connections
⇒
10. Memory map
2
L RUN or L
ERR
is on/
flashing
CPU ALM
Are both the L RUN
(green) and L ERR (red)
LED ON?
It is possible that the CPU or surrounding
circuits have failed, or the CPU is
malfunctioning due to electrical noise.
If the alarm is still generated when power is
reapplied, please contact SMC.
CC-Link
communication
error
What are the states of the
L RUN (green) and L
ERR (red) LED?
Take appropriate measures by referring to and
following the controller operation manual.
⇒
8. LED display
⇒
17.Alarm Detection for CC-Link
Communication
3
ALM: ON
Alarm
generated
Check if the controller is
in the alarm condition.
Refer to the controller operation manual, and
take appropriate measures. Take appropriate
measures based on the operation manual.
⇒
16. Alarm for Motor Control
4
Communication
fault
(JXC-W2A-C)
The USB
driver is not
installed
Check that the USB
driver for the conversion
unit is installed.
Please install the USB driver of the communication
unit.
The USB driver's installation starts when the
communication unit is connected with PC. Details
of the installation procedure are shown in
"Installation procedure of the JXC-W2 setting
software".
Incorrect COM
port setting
Please confirm if the
correct COM port is set to
the ACT Controller.
The COM port allocated to the controller is
different for different PC’s. Check and confirm the
COM port number with the controller connected to
the PC.
The COM port number can be checked using the
Device Manager of the PC. For details of the COM
port checking and setting methods refer to the
"JXC-W2 Controller Configuration Software
Installation Manual".
Connection
failure
Check the wiring
Please confirm motor controller = communications
cable = USB cable = PC is connected.
As example, cannot make the communication if
the connector has been damaged.
Please confirm the power supply of motor
controller (JXC) has been turned ON.
Communication cannot be established if the power
supply is OFF.
If the equipments (PLC and measurement
hardware) except motor controller is connected
with PC.
(There is a possibility that the
communication with other equipment interferes in
PC.)