Simatic S5 Memory Mapping
A-9
S5 UniLink Adapter Installation and Operation
A.8 Timer — CP 525 ‘T’ Type
The S5 Timer memory, as accessed through a CP module, refers to memory
that is organized by 256 contiguous words of memory. Because the
accessible timer memory is different for different CPUs, the S5 PIM
assumes no knowledge of the accessible memory ranges for timer memory.
The TT types that map to this type of S5 memory are Timer Current (TT
Type 14) and Timer/Counter Current (TT Type 0F). The Timer/Counter
Current TT Type 0F will access S5 Timer memory only, thus no access to S5
Counter memory will be provided through TT Type 0F.
NOTE: If a TIWAY request is out of range, the exception returned will be of
the form 80DD.
S5 Timer MemoryTI500/TI505 Timer Memory Address
Address = XXXX (hex)
Word Address:
XXXX (hex)
S5: Word Address = XXXX (hex) in Timer T memory.
TI500/TI505: XXXX (hex) in Timer memory of Timer/Counter memory.
When converting the value for S5 Timers, the time value of the S5 Timer is
copied directly, and the remaining bits are set to zero.
Contents of S5 Timer Memory
Contents of TI500/TI505 Timer Memory
1514131211109876543210
1514131211109876543210
Time
Set to Zero
Reading the CP 525 T memory with the TT types 0F and 14 is supported.
Writing to the CP 525 T memory with TT types 0F and 14 is not supported
due to the functionality of the CP module itself.
Description
Address Mapping
Value Conversion
Reading and
Writing
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