Testing the User Program and Storing It on the Memory Submodule
S5-95F
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
Abbreviations for Relevant
Causes of Faults
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
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
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14-8
EWA 4NEB 812 6210-02