88
Alarm Check Flowchart Although
the PC
does not stop when the ALARM indicator lights, check and cor
-
rect such errors as soon as possible.
A
B A
ALARM
indica
-
tor lights?
YES
NO
System error
(FAL)?
NO
YES
JMP error?
NO
YES
Indirect DM
BCD error?
NO
YES
Non-fatal SFC
error?
NO
YES
Rack power
failure?
NO
YES
I/O verify error?
NO
YES
(A40215 ON)
(A40213 ON)
(A40212 ON)
(A40211 ON)
(A40210 ON)
(A40209 ON)
(T
o next page)
Check F
AL No. with word
A430 to A461 and remove
cause of error
Destination of JMP is
missing
Contents of indirectly ad
-
dress are not BCD
Check program of SFC
Check Racks recognized
by CPU with word A419
and turn ON power to
Rack No. whose bits are
OFF
I/O Unit has been re
-
moved. Check I/O Units by
verifying I/O table. Correct
-
ly mount Units, or create
I/O table
End
Connect peripheral device
and check error
Troubleshooting Flowcharts Section 5-2
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