IFM Electronic AS-i DP Series - Hardware Error Codes

device manual AS-i DP-Gateway
6.1.8 Hardware error ( --- exception error --- )
--- Exception Error ---
STKOV: STKUN:
Seg: Off:
SP: R0:
CP: TFR:
The main processor has detected an exception error.
All current activities are interrupted. To exit this operating mode the device has to be switched off.
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 STK
OF
STK
UF
- - - - - UND
OPC
- - - PRT
FLT
ILLO
PA
ILL
INA
ILLB
US
Bit Name Possible error source
NMI: interrupt cannot be masked 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
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