Siemens SIMATIC S5-100U System Manual page 95

S5-100U
Table 5-6. Mnemonics Used for the Interrupt Display
Mnemonics Used
for the Interrupt Display
ANZ1/ANZ0
ASPFA
BAU
ERAB
FKT
KE1...KE6
KEINAS
NAU
NINEU
NNN
OR
OVFL
PEU
STATUS
STOPS
STS
STUE
SUF
SYSFEH*
TRAF
UAW
VKE
ZYK
*
Relevant only for CPU 103 version 8MA03 and higher
EWA 4NEB 812 6120-02b
Condition codes for various operations (see section A.1.4)
Illegal memory submodule
Battery failure
First scan
0 : O( 1 : A(
Nesting stack entry 1 to 6 entered for A( and O(
Insufficient S5 statement memory available
Power failure
Cold restart not possible
Statement cannot be interpreted in the PLC
OR memory (set by command "0")
Arithmetic overflow (+ or -)
I/Os not ready:
• First bus unit not connected
• Expansion module not connected
• I/O bus malfunction
• Maximum shift register length exceeded
• Unknown module
• Module in the wrong slot
STATUS of the operand of the last binary statement executed
Operating mode switch on STOP
Operation interrupted by a programmer STOP request or
programmed STOP statements
Block stack overflow: The maximum block call nesting depth of 16
has been exceeded.
Substitution error
Error in DB1
Transfer error for data block statements:
• When accessing a data word even though no corresponding data
block was opened or
• When the data word number is larger than the data block length
Interrupt display word
Result of logic operation (RLO)
Scan time exceeded: the set maximum permissible program scan
time has been exceeded
Diagnostics and Troubleshooting
Explanation
5-7