
APPENDIX
B–64115EN/01
A. ALARM LIST
549
Alarm number ContentsFaulty location/corrective action
WN21 COMMON MEM. ENTRY
ERROR
Modify the ENTRY in the shared memory
GDT in the link control statement.
When a PMC C board is used, the
ENTRY in the shared memory GDT is
out of range.
WN22 LADDER 3 PRIORITY ER-
ROR
Change the value of the TASK LEVEL
(LADDER LEVEL 3) in the link control
statement to 0, 10 to 99, or –1.
When a PMC C board is used, the prior-
ity of LADDER LEVEL 3 is out of range.
WN23 TASK COUNT OVER Change the TASK COUNT in the link con-
trol statement to 16 or less. (To change the
task count, modify the link control state-
ment, build file, and the configuration of the
files to be linked.)
When a PMC C board is used, the num-
ber of user tasks exceeds 16.
WN24 TASK ENTRY ADDR ER-
ROR
Change the GDT table in the build file to 32
(20H) to 95 (5FH).
When a PMC C board is used, the user
task entry address selector is out of
range.
WN25 DATA SEG ENTRY ER-
ROR
Change the DATA SEGMENT GDT
ENTRY value in the link control statement
and the GDT table in the build file to 32
(20H) to 95 (5FH).
When a PMC C board is used, the data
segment entry address is out of range.
WN26 USER TASK PRIORITY
ERROR
Change the TASK LEVEL of each task in
the link control statement to a value from
10 to 99 or –1. (Note that –1 can be speci-
fied for the TASK LEVEL of only one task,
including the third Ladder level).
When a PMC C board is used, the prior-
ity of the user task is out of range.
WN27 CODE SEG TYPE ERROR Change the value of the code segment ac-
cording to the segment setting in the link
control statement and build file.
When a PMC C board is used, the code
segment type is invalid. The setting of
the RENA–MESEG code segment in the
bind control file is wrong.
WN28 DATA SEG TYPE ERROR Change the value of the data segment ac-
cording to the segment setting in the link
control statement and build file.
When a PMC C board is used, the data
segment type is invalid. The setting of
the RENA–MESEG data segment in the
bind control file is wrong.
WN29 COMMON MEM SEG
TYPE ERROR
Change the value according to the seg-
ment setting in the link control statement
and build file.
When a PMC C board is used, the
shared memory segment type is invalid.
The setting of the RENAMESEG seg-
ment in the shared memory bind control
file is wrong.
WN30 IMPOSSIBLE ALLOCATE
MEM.
1) Check that the USER GDT ADDRESS
in the link control statement and the
start address of the code segment in
the build file are correct.
2) Change the PMC system parameter,
MAX LADDER AREA SIZE, to a mini-
mum.
3) Change the stack size in the link con-
trol state to a minimum.
When a PMC C board is used, the
memory area for data, stacks, and others
cannot be reserved.
WN31 IMPOSSIBLE EXECUTE
LIBRARY
1) Check the types supported by the li-
brary.
2) Reconfigure the PMC management
software and contact FANUC.
When a PMC C board is used, library
functions cannot be executed.