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The USB
driver is not
installed
Check that the USB driver for the
conversion unit is installed.
If the USB driver has not been installed, the
installation of the USB driver starts
automatically when the conversion unit is
connected to the PC.
For details of the installation procedure refer
to the “LATC-W1 Controller Setting Software
Installation Manual".
The USB driver needs to be installed
individually for every COM port.
If the installation does not start when the
conversion unit is connected to the PC, the
USB driver may have already been installed.
A specific COM port number is assigned to
each COM port the conversion unit is
connected to. Check that the COM port
number match with the COM port the
conversion unit connected to.
The COM port number can be checked using
the Device Manager of the PC. For details of
the COM port checking method refer to the
“LATC-W1 Controller Setting Software
Installation Manual".
Incorrect
COM port
setting
Check that the correct COM port is set to
the Controller Setting Software.
The COM port allocated to the conversion unit
is different for different PC’s. Check and
confirm the COM port number with the
conversion unit connected to the PC. The
COM port number can be checked using the
Device Manager in the PC. For details of the
COM port checking and setting methods refer
to the "LATC-W1 Controller Setting Software
Installation Manual".
Connection
failure
Confirm the connection status.
Confirm that the LATC4 controller
communication cable, conversion unit, USB
cable, and PC are connected correctly.
For example, communication cannot be
established if the connector has been
damaged.
Check that the power supply to the controller
(LATC4) has been turned on.
Communication cannot be established if the
power supply is off.
If any external equipment (PLC and
measurement hardware), except the LATC4
controller, are connected to the PC,
disconnect them. (There is a possibility that
the other equipment connected to the PC
interfere with the communication.)
Communica
tion with the
controller
cannot be
established.
(LATC-W1)
The CPU of
the PC is
busy or
overloaded
Confirm that no other applications except
the Card Motor Controller Setting
Software are running simultaneously, and
that the CPU of the computer is not
overloaded.
Terminate all other applications except the
Card Motor Controller Setting Software.
∗
The page numbers shown in the brackets in the countermeasures refer to page numbers in the
LATC4 series controller operation manual.