ifm
Device manual AS-i M4 Gateway Profibus DPV1 (AC1375, AC1376)
2012-02-23
Troubleshooting
Hardware errors, exception errors
505
16.11
Hardware errors, exception errors
6046
Exception Error
STKOV: STKUN:
Seg: Off:
SP: R0:
CP: TFR:
OK
ESC
> The main processor has detected an exception error.
> All current activities are interrupted.
►
Switch the device off and on again.
►
If without success: Note down the display indications and contact a
sales specialist.
.
The following entries in the TFR register give further details about the error cause:
TFR register
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
NMI
STKO
F
STKUF
–
–
–
–
–
UND
OPC
–
–
–
PRTFL
T
ILLOPA
ILLINA
ILLBUS
.
Bit
Name
Possible error source
NMI
non maskable interrupt
hardware
STKOF stack
overflow
hardware
STKUF stack
underflow
hardware
UNDOPC
unknown machine command
hardware
PRTFLT
32 bit execution code error
hardware
ILLOPA
invalid access to 16-bit operand
hardware
ILLINA
invalid jump address
hardware
ILLBUS
invalid access to external bus
hardware
.
Examples:
TFR 0004
16
0000 0000 0000 0100
2
Invalid access to 16-bit operand, e.g. by the PLC
TFR 0002
16
0000 0000 0000 0010
2
invalid jump address, e.g. by the PLC
