ifm
Basic Device Manual AS-i ControllerE M4 Target V15
2015-10-30
Error description
Hardware error, exception error
270
16.11
Hardware error, exception error
E
E
x
x
c
c
e
e
p
p
t
t
i
i
o
o
n
n
E
E
r
r
r
r
o
o
r
r
STKOV:
STKUN:
Seg:
Off:
SP:
R0:
CP:
TFR:
>
The main processor detected an exception error
>
All current activities are interrupted
► Power the controllere off and on again
► If without success: Note down the displayed information and contact
a sales specialist
O
O
K
K
E
E
S
S
C
C
NOTE
If this error message is shown immediately after power-on, the execution of the PLC program can be
prevented:
► During power-on press the left function key of the device and keep it pressed.
>
The PLC program is declared "non valid", no longer initialised and no longer executed.
The following information in the TFR register provides details concerning the cause of the error:
TFR register
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
NMI
S
T
K
O
F
S
T
K
UF
–
–
–
–
–
UNDO
P
C
–
–
–
P
RT
F
LT
ILL
O
PA
ILL
INA
IL
L
B
US
Bit
Name
Possible error source
NMI
Non maskable interrupt
Hardware
STKOF
Stack overflow
PLC program / hardware
STKUF
Stack underflow
PLC program / hardware
UNDOPC
Unknown machine command
PLC program / hardware
PRTFLT
32-bit execution code error
PLC program / hardware
ILLOPA
Invalid access to 16-bit operand
PLC program / hardware
ILLINA
Invalid jump address
PLC program / hardware
ILLBUS
Invalid access to external bus
Hardware
Examples
:
TFR 0004
Invalid access to 16-bit operand, e.g. by the PLC
TFR 0002
Invalid jump address, e.g. by the PLC
