Process Station ABB FieldController 800
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5.4.3 AC 800F Boot Parameters
Memory These parameters affect the allocation of memory within the process sta-
tion. When there are an extremely large number of objects in the FieldCon-
troller, errors may occur on loading the objects; these settings may be al-
tered to try to make the project loadable.
Under normal circumstances the boot parameters should not be
changed. If they are changed, then the resource is initialized when
the modified boot parameters are loaded.
Attention should also be paid to the system variables PRAM_Free
and RAM_Free after loading. If the variable PRAM_Free has a
value of 0, then the value of PRAM_Size must be increased; if the
variable RAM_Free is set to 0, then both PRAM_Size and the
maximum number of objects must be reduced.
The AC 800F has 4 Mbytes memory. The memory is subdivided into differ-
ent parts as listed below.
ThefollowingarefiledintheFlashmemory:
• Operating system
• Boot-EPROM
ac003us.bmp
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