
B–61863E/15
M. ALARM MESSAGE LISTAPPENDIX
1561
Alarm number ContentsFaulty location/corrective action
ER16 RAM CHECK ERROR
(PROGRAM RAM)
Replace the master printed circuit board The initialization of the memory used to
store the sequence program failed.
ER17 PROGRAM PARITY 1) Re–input the sequence program.
2) Replace the master printed circuit
board.
The parity of the sequence program is
invalid.
ER18 PROGRAM DATA ERROR BY
I/O
Re–input the sequence program. While the sequence program was being
read, an interrupt command was
generated.
ER19 LADDER DATA ERROR Display the Ladder edit screen again
and exit from editing by using the [<<]
key.
During Ladder editing, the system was
forcibly switched to the CNC screen with
a function key.
ER20 SYMBOL/COMMENT DATA
ERROR
Display the symbol/comment edit
screen again and exit from editing by
using the [<<] key.
During symbol/comment editing, the
system was forcibly switched to the
CNC screen with a function key.
ER21 MESSAGE DATA ERROR Display the message data edit screen
again and exit from editing by using the
[<<] key.
During message data editing, the
system was forcibly switched to the
CNC screen with a function key.
ER22 PROGRAM NOTHING 1) Re–input the sequence program.
2) Replace the master printed circuit
board.
The sequence program is empty.
ER23 PLEASE TURN OFF POWER Turn the CNC off and then back on. With a change in the PMC type, for
example, the power must be turned off
and then back on.
ER25 SOFTWARE VERSION ERROR
(PMCAOPT)
Contact FANUC to reconfigure the PMC
management software.
The PMC management software is
invalid.
(The edition of PMCAOPT does not
match.)
ER26 PMC CONTROL MODULE
ERROR (PMCAOPT)
1) Contact FANUC to reconfigure the
PMC management software.
2) 2) Replace the master printed circuit
board.
The initialization of the PMC
management software failed.
ER27 LADDER FUNC. PRM IS OUT
OF RANGE
Modify the sequence program. Change
the parameter number of the function
instruction to a value within the valid
range.
An out–of–range parameter number is
specified with function instruction TMR,
TMRB, CTR, DIFU, or DIFD.
ER32 NO I/O DEVICE 1) Check that the I/O device is on.
2) Check that the I/O device was turned
on before the CNC was turned on.
3) Check the connection of the cable.
An I/O device such as the I/O Link,
connection unit, and Power Mate is not
connected.
ER33 I/O LINK ERROR Replace the master printed circuit
board.
The LSI of the I/O Link is defective.
ER34 I/O LINK ERROR (xx) 1) Check the connection of the cable
leading to a device in group xx.
2) Check that the I/O device was turned
on before the CNC.
3) Replace that device in group xx in
which the PMC control module is
installed.
In a slave in group xx, an error occurred
in communication with an I/O device.
ER35 TOO MUCH OUTPUT DATA IN
GROUP (xx)
Reduce the amount of output data in
group xx.
The amount of output data in I/O Link
group xx exceeds the limit (33 bytes).
The excess data is nullified.
ER36 TOO MUCH INPUT DATA IN
GROUP (xx)
Reduce the amount of input data in
group xx.
The amount of input data in I/O Link
group xx exceeds the limit (33 bytes).
The excess data is nullified.
ER38 MAX SETTING OUTPUT DATA
OVER (xx)
Modify the total amount of output data in
each group to 128 bytes or less.
The I/O Link I/O area is insufficient.
(The allocation of any group after group
xx on the output side is nullified.)