Siemens CPU 948 Programming Manual page 210

Control Bits and Interrupt Stack
5 - 12
STOP CAUSE (see RS 7)
Bit Meaning
Table 5-2 continued:
UPROG STOP mode caused by user program
USYS STOP mode caused by system program
(warm restart possible)
UANL STOP mode caused by illegal start-up type
AFEL STOP mode caused by errors in the start-up block
SYSFHL STOP mode caused by system error (may be caused by
user error, e.g. overwriting system RAM with a block
transfer or similar (when a system error is marked, a
four-digit hexadecimal number/error code appears at the
bottom edge of the screen - refer to RS 75 in Chapter 8).
Table 5-3 Meaning of the control bits START-UP IDS
START-UP IDs (see RS 8)
Bit Meaning
NEUDEF COLD RESTART was executed as last start-up type.
WIEDF WARM RESTART was executed as last start-up type.
URLDF Overall reset was executed or is active.
NEUZU COLD RESTART permitted as next start-up type.
WIEZU WARM RESTART permitted as next start-up type.
URLER Overall reset required.
AWEG AUTOMATIC WARM RESTART is preset.
ANEG AUTOMATIC COLD RESTART is preset.
MSEG Manual start is preset.
CPU 948 Programming Guide
C79000-G8576-C848-04