S5-115F Manual Error Diagnostics
5.1.2 Meaning of the ISTACK Displays
Besides malfunction analysis, the ISTACK provides other information.
Table 5-1. Mnemonics for Control Bits
1
ISR = Interrupt service routine
Control Bit Mnemonics Interrupt Display Mnemonics
UAW Interrupt condition code word
STOPS Mode selector at STOP
SUF Substitution error
TRAF Transfer error for data block statements:
data word number > data block length.
NNN Statement cannot be interpreted in the S5-115F
(e.g. a 150S statement).
STS Operation interrupted by a programmer STOP
request or programmed STOP statements.
STUEB Block stack overflow: The maximum block call
nesting depth of 16 has been exceeded.
FIF
_FEHLER Error in S5-115F with PLC Stop response
NAU Power failure
QVZ Time-out from I/Os: A nonexistent module has
been referenced.
ZYK Scan time exceeded: The set maximum
permissible program scan time of 0.5 sec. has
been exceeded.
SYSFE Error in the SYSID block
PEU I/Os not ready: power failure in the I/O
expansion unit; connection to the I/O
expansion unit interrupted
No terminator in the central controller
BAU Battery failure
ASPFA Illegal memory submodule
ANZ1/ANZ0 00: ACCUM1 = 0 or 0 shifted
01: ACCUM1> 0 or 1 shifted
10: ACCUM1< 0
OVF Arithmetic overflow (+or -)
CARRY Overflow bit
ODER OR memory
(set by ”0” operation)
STATUS STATUS of the operand of the last binary
statement executed
VKE Result of logic operation
ERAB First scan
BEF
_REG Operation register
SAZ Step address counter
DB
_ADR Data block address
BST
_STP Block stack pointer
DB
_NR Data block number
REL
_SAZ Relative step address counter
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FISIN_PR SINEC L1 LAN has been configured
FIALA
_TE Interrupt DI test active
BSTSCH Block shift requested
SCHTAE Block shift active (function:
COMP: PLC)
ADRBAU Construction of address lists
TIMR
_AKT ISR
1
timer(10 msec.) running
FIFEDB
_S Send error DB on SINEC L1 LAN
FISTPS STOP-RUN switch pulse has been
sent
FIFBETR Safety mode
FIBS
_AKT 115 operating system executing, not
user program.
FITL
_AG =0 >>> subunit A
=1
>>> subunit B
FITEKO
_OK Test component check completed,
start up next one
ALARMREQ Interrupt request after interrupt
synchronization, for idle loop.
FIEA
_PER Memory address in I/O range:
Interpreter
FIALA
_SP Interrupt disable active
STOZUS ”STOP” mode (external request)
STOANZ ”STOP” display (internal request)
NEUSTA PLC in Cold Restart
FIURLOE Overall reset: PG request
BATPUF Battery backup okay
FIWINT Interrupt change flag, lesser stop
loop
BARB Program check
BARBEND Request for end of program check
FINT
_GEW Interrupt past
FIQV SINEC L1 internode traffic
FIR
_BUS Redundant SINEC L1 LAN
FIEMPF Receive permission SINEC L1
FISEND Send permission SINEC L1
ABFS
_AKT Interrupt enable
FIWEBI
_2 Change bit for job 2
FIKSTOP Lesser Stop loop
ASPNEP Memory submodule is an EPROM
ASPNRA Memory submodule is a RAM
KOPFNI Block header cannot be interpreted
FIDE
_TE DI test active
ASPNEEP Memory submodule is an EEPROM
FIOBT
_RQ Time interrupt request from 10
msec. ISR
1
FIDE_M_T DI multitest
FIOBT
_FE OB 13 error
KEINAS No memory submodule
SYNFEH Synchronization error (blocks are
incorrect)
NINEU Cold Restart not possible
URLAD Bootstrapping required
EWA 4NEB 811 6149-02
5-3
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