15-2
Equipment
Manual OP7, OP17
Release 04/99
Before
commissioning the OP
, take note of the following:
!
Caution
W
ith the SIMA
TIC S5, compression of the internal program memory of
the PLC (PU ”Compress” function, integrated COMPR FB) is not al
-
lowed when an OP is connected. Compression modifies the absolute ad
-
dresses of the blocks in the program memory
. As the OP reads the ad
-
dress list only during start-up, it does not detect any address modifica
-
tions and accesses the wrong memory areas.
If compression is inevitable during routine operation, turn of
f the OP
prior to compression.
Do not disconnect while circuit is live unless location is known to be
nonhazardous.
Before
commissioning
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