Siemens CPU 31 Series Technical Data Manual page 207

Technical data
Timers/counters and their retentive address areas
S7 counters
•
•
•
•
IEC Counters
•
•
•
S7 timers
•
•
•
•
IEC timers
•
•
Data areas and their retentive address areas
Bit memory
•
•
•
•
Data blocks
•
•
•
Local data per priority class, Max.
Blocks
Total number of blocks
Size, Max.
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
Number
Retentive address areas, configurable
Retentive address areas, preset
Counting range
Available
Type
Number
Number
Retentive address areas, configurable
Retentive address areas, preset
Timer range
Type
Number
Number
Retentive address areas, configurable
Preset retentive address areas
Number of clock memories
Number
Size
Non-retain support (configurable retentive
address areas)
Technical data of CPU 31x
2048
Yes
From C0 to C7
0 to 999
Yes
SFB
Unlimited
(limited only by working memory)
2048
Yes
Not retentive
10 ms to 9990 s
Yes
SFB
Unlimited
(limited only by work memory)
8192 bytes
MB 0 to MB 8191
MB 0 to MB15
8 (1 memory byte)
4095
(in 1 to 4095 range of numbers)
64 Kbytes
Yes
1024 bytes
4096 (DBs, FCs, FBs)
The maximum number of blocks that can be
loaded may be reduced if you are using another
MMC.
64 Kbytes
7.8 CPU 319-3 PN/DP
7-41