● For information on the troubleshooting for the CPU unit, also refer to FP7 CPU Unit User's
Manual (Hardware).
10.1.3 Serial Communication Unit's Operation Monitor LED
The serial communication unit has a self-diagnostic function which identifies errors. Indications
concerning self-diagnosis are as follows.
■
LED indications concerning self-diagnostic errors
LED
indication
Status Status Countermeasures
ERROR
ON
Parameter setting error or
transmission/reception error occurs.
Refer to "10.2 What to Do If an Error
Occurs (For Each Communication
Mode)".
Flashing
(Flashing
cycle: 100 ms)
The factory acceptance test switch
is ON.
Turn OFF the factory acceptance test
switch on the side of the unit.
Flashing
(Flashing
cycle: 500 ms)
A cassette that cannot be combined
is attached.
Confirm the type of the cassette, and
replace it.
ALARM ON Hardware error occurs. Please contact your dealer.
■
CPU operation when an error occurs in Serial Communication Unit
● If an alarm or error occurs in the serial communication unit, the CPU unit will stop the
operation. The operation can be changed to "Continue" using the CPU configuration.
● In the programming tool, a message of "Unit alarm (80)" or "Unit error (81)" can be confirmed
on the "status display" dialog box.
● Even if a communication error occurs, the ERROR LED of the serial communication unit will
turn off once communication is completed normally with other COM. ports. For confirming error
contents, execute PMGET instruction and confirm communication parameters or monitor
information.
10.1 Self-diagnostic Function
WUME-FP7COM-07 10-3