508
Error and message Possible remedyError code
(A400)
Flag(s)Probable Cause
Cycle time too long The cycle time has
exceeded the maximum
cycle time set in the PC
Setup.
A40108 809F Change the program or the
maximum cycle time.
3
SFC fatal error The program contains an
error in SFC syntax or an
END(01) instruction is
missing.
A40107 80F3 Correct the program and then clear
the error. (Refer to the next table for
information on SFC fatal errors.)
Check to be sure that all programs
end in END(01).
FALS error FALS has been executed
by the program. Check
the FAL number to
determine conditions that
would cause execution.
A40106 C101 to C2FF
correspond to
FAL numbers
001 to 511.
Correct according to cause
indicated by FAL number.
Note 1. Error codes 80C0 to 80C7 indicate Rack numbers 0 to 7, respectively. Error
codes 80CE and 80CF indicate that the terminator is missing in operating
system 0 and 1, respectively.
2. The total number of I/O words allocated to the CPU, CPU Expansion, and
Expansion I/O Racks is contained in A407. A408 contains the total number
of I/O words allocated to the SYSMAC BUS/2 System, and A478 contains
the total number of I/O words allocated to the SYSMAC BUS System.
3. The maximum cycle time since start-up is contained in A462 and 463, and
the present cycle time is contained in A464 and 465.
The following table describes SFC fatal errors. When an SFC fatal error occurs,
the SFC Fatal Error Flag (A40107) is turned ON, and the error code is output to
A414.
Error Error code
(A418)
Probable cause Possible remedy
No active step 0001 There is not even one active step. Check the program.
No subchart 0002 There is no subchart entry step for the subchart
dummy step, or the subchart number is
incorrect.
Check and then re-transfer
the program.
No initial step 0003 There is not even one initial step in the
program.
Create an initial step and
then re-transfer the program.
No action set 0007 There is no action program set, or the bit
address for the action is incorrect.
Check and then re-transfer
the program.
No transition set 0008 There is no transition program set, or the bit
address for the transition is incorrect.
Interrupt return error 0014 An interrupt return terminal was detected
outside of an interrupt program.
Check the program.
Subchart return error 0015 A subchart return step was detected outside of
a subchart program.
Memory error 0004 to 0006,
0009 to 0013
Memory contents are incorrect. Re-transfer the program.
SFC Fatal Errors
Error Messages Section 8-4
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