Technical data of CPU 31xC
6.3 CPU 313C
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
6-9
Technical data
IEC Counters Yes
• Type
SFB
• Number
unlimited (limited only by RAM size)
S7 timers 256
• Retentive address areas
Configurable
• Default
Not retentive
• Timer range
10 ms to 9990 s
IEC timers Yes
• Type
SFB
• Number
unlimited (limited only by RAM size)
Data areas and their retentive address areas
Bit memory 256 bytes
• Retentive address areas
Configurable
• Default retentive address areas
MB0 to MB15
Clock memory 8 (1 memory byte)
Data blocks Max. 511
(in the 1 to 511 range of numbers)
• Size
Max. 16 KB
Local data per priority class Max. 510 bytes
Blocks
Total 1024 (DBs, FCs, FBs)
The maximum number of blocks that can be
loaded may be reduced if you are using another
MMC.
OBs see the Instruction List
• Size
Max. 16 KB
Nesting depth
• Per priority class
8
• Additional within an error OB
4
FBs
• Number, Max.
1024
(in the 0 to 2047 range of numbers)
• Size
Max. 16 KB
FCs
• Number, Max.
1024
(in the 0 to 2047 range of numbers)
• Size
Max. 16 KB
Address areas (I/O)
Total I/O address area Max. 1024 bytes/1024 bytes
(can be freely addressed)
I/O process image 128 bytes / 128 bytes
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