Siemens SIMATIC S5-95F Manual page 397

Testing the User Program and Storing It on the Memory Submodule
Table 14-5 provides a list of abbreviations used in the programmer's ISTACK listing.
Table 14-5. Abbreviations for Control Bits and Causes of Faults
Abbreviations for Relevant
Control Bits
BSTSCH Block Shift requested
SCHTAE Block Shift in progress
(COMP:PC function)
ADRBAU Address list structure
NAUAS Mains power failure
STOZUS STOP state (external request,
e.g. via PG)
STOANZ STOP flag
NEUSTA PLC cold restart in progress
BATPUF Backup battery is OK
AF Interrupt Enable
KOPFNI Block header cannot be
interpreted
ASPNEEPMemory submodule is EEPROM
KEINAS No or too little user memory
SYNFEH Synchronization error (block
errors, e.g. bad block header)
NINEU Cold restart not possible
URLAD Bootstrapping required
STOPS Mode switch set to STOP
SUF Substitution error
TRAF Transfer error on data block
instruction. Data word number >
data block length
NNN PLC cannot interpret instruction
STS Operation interrupted by PG Stop
request or programmed Stop
statements
STUEB Block stack overflow. Maximum
block call nesting depth (16)
exceeded
14-8
Abbreviations for Relevant
Causes of Faults
NAU Power failure
ZYK Cycle time exceeded. The
maximum permissible program
scan time was exceeded.
PEU I/O not ready. Power failure in I/O
expansion unit; connection to I/O
expansion unit interrupted; no
connector in basic unit
BAU Battery failure
ASPFA Illegal memory submodule
Miscellaneous abbreviations:
BEF-REG:Instruction register
SAC Step address counter
DB-ADR Data block address
BST-STP Block stack pointer (points to last
entry block stack)
NR Block number (OB, PB, FB, SB,
DB)
REL-SAC Relative step address counter
CC1 See Chapter 8, "Condition Code
Generation"
CC0 See Chapter 8, "Condition Code
Generation"
OVFL Arithmetic overflow (+ or -)
ODER OR memory (AND before OR)
ERAB First input bit scan by pulse
STATUS Status of the operand of the last
binary operation executed
RLO Result of the logic operation
u Unassigned
S5-95F
EWA 4NEB 812 6210-02