User`s manual

DeviceNet (Master) Function
8-38
8
Display lamp
Error details
Communication
operation
Master
status
*
Treatment
MS/NS/FT
S7 to S0
(error
node)
MS: Keeps the
current
status
NS: Red lamp
lights
F0
A node
address has
been used
twice
The master station
node address has
been assigned to
another node.
Operation
stopped
D16
and D1
turn
ON.
Check the other node addresses.
Eliminate the duplicated node
address and restart the master
module .
F1
Detected a Bus
OFF
The JW-32CUM1 Bus
OFF status is active
(communication was
stopped due to
frequent data errors).
Check the following:
- Make sure the communication
speed of the master station and
slave stations are the same.
- Make sure there are no
disconnected or loose cables.
- Make sure there is not too much
electrical noise.
- Make sure the cable lengths
(trunk and branches) are
appropriate.
- Make sure the terminating
resistances are connected both
ends and only to the ends.
MS: Red lamp
blinks
NS: Goes OFF
F2
Node address
error
Some of the switches
on the JW-32CUM1
are set incorrectly.
D16
and D0
turn
ON.
Check the node address switch.
F3
Communication
speed error
Check the SW8 switch settings.
F4
Module No.
error
Check the Module No. switch
settings.
F5
Other switch
setting errors
Other than
"F2, F3, or F4"
Check the set values of the
system memory.
F6
System
memory setting
error
Some settings in the
JW-32CUM1 system
memory are out of the
specified range.
MS: Red lamp
lights
NS: Goes OFF
F7
Scan list data
error
The EEPROM has a
memory error.
- Unable to read or
write the scan list
parameters since no
data table exists on
the master module.
Recreate the scan list and
recreate the data table in the
master module (JW-32CUM1).
Or, replace the JW-32CUM1.
F8 Serial No. error
F9 RAM error
An error occurred
during a RAM check of
the JW-32CUM1.
—
FA ROMSUM error
An error occurred
during a ROM check of
the JW-32CUM1.
FB DPRAM error
An error occurred
during a common RAM
check of the JW-
32CUM1.
MS: Keeps the
current
status
NS: Keeps the
current
status
—
Watchdog
timer error
A watchdog timer error
occurred on the JW-
32CUM1.
Operation
stopped
—
Replace the JW-32CUM1.
FT: Lights —
Watchdog timer error on the JW-
32CUM1 (Hardware error on the JW-
32CUM1).
Operation
stopped
—
* Master status - See page 8-44.
Error codes are stored in system memory, starting at location #170 in the JW30H (JW-32CUM1).
Remarks
- The error codes stored in system memory start at location #170 and the location is incremented up
to location #177, each time a new error code occurs. Up to 8 error codes can be stored in memory.
These codes will not disappear during RAM operation of the programmable controller, even if the
power to the PLC is turned OFF. System memory locations #170 to #177 will retain the error
codes stored in them, even after a recovery.
- When an error occurs in the JW-32CUM1 (DeviceNet section), error code 53(H) (optional error) will
be stored at system memory location #160.
- When an optional error 53
(H)
occurs, if you monitor system memory location #051, bits indicating
the faulty I/O link master module or DeviceNet master module will be ON (the module number
switch setting value). When an error occurs in the DeviceNet section of the JW-32CUM1, bit 0 (the
module number 0 error) will be turned ON.