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