Illegal Accesses - Siemens SIMATIC S5 Manual

S5-115F Manual
3.6

Illegal Accesses

Various access operations are illegal in the S5-115F. An attempt to access illegal addresses is
rejected with an error message in the case of LIR, TIR and TNB and the PLC stops ( Table 3-35).
Range
0000 to 0FFF
H H
C400 to EFFF
H H
F000 to EFFF
H
F080 to F0FF
H H
(analog input/output
modules)
F080 to F0FF
H H
(analog input/output
modules)
EWA 4NEB 811 6149-02
Table 3-35. Illegal Access Operations
STL operations
LIR, TIR, TNB Area for special intelligent I/Os not used with
the S5-115F
TIR, TNB Operating system data: read only!
LIR, TIR, TNB I/O area,
page area
L PY, L PW Use FB 250 ANEI for reading the coded values of
analog input modules.
If you use a CP 523, you can use L PW, L PY to
access the addresses assigned by the CP 523.
T PY, T PW Use FB 251 ANAU to transfer the coded values of
analog output modules.
If you use a CP 523, you can use T PW, T PY to
access the addresses assigned by the CP 523.
STEP 5 Operations
Remarks
3-75