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Error Diagnostics
5.1.2
Meaning of the ISTACK Displays
Use Table 5-5 to determine the cause of a fault or an error when program scanning is interrupted.
In each case, the CPU goes into the "STOP" mode.
Fault/Error
Cause
Fault/Error
(ID in
ISTACK)
Cold Restart is
NINEU
SYNFEH/
not possible.
KOPFNI
KOLIF
FEST
Faulty
ASPFA
submodule
Battery failure
BAU
I/Os not ready
PEU
Program
STOPS
scanning
interrupted
5-6
Table 5-5. Meaning of the ISTACK Displays
Cause
Faulty block:
•
Compressing has been interrupted by a
power failure.
•
Block transfer between programmer and
PLC was interrupted by a power failure.
•
Program error (TIR/TNB/BMW)
DB1 is programmed incorrectly.
There is an error in the self-test routine of
the CPU.
The submodule ID is illegal:
(AG 110S/135U/150U submodule)
There is no battery or the battery is low
and the retentive feature is required.
The I/Os are not ready:
•
There has been a power failure in the
expansion unit.
•
The connection to the expansion unit
has been interrupted.
•
There is no terminator in the central
controller.
The mode selector is on STOP.
S5-115U Manual
Remedy
Perform an Overall Reset.
Reload the program.
Check the following:
•
ID for interprocessor
communication flag definitions
("MASK01");(see Section 12.1)
•
ID for the part of DB1 to be
interpreted
("DB1");(see Section 11.3)
•
the end IDs in each case for
interprocessor communication
flag definitions or for the part
of DB1 to be interpreted
Replace the CPU.
Plug in the correct submodule.
Replace the battery.
Perform an Overall Reset.
Reload the program.
•
Check the power supply in the
expansion unit.
•
Check the connection.
•
Install a terminator in the
central controller.
Put the mode selector on RUN.
EWA 4NEB 811 6130-02b
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