Technical data of CPU 31x
7.2 CPU 312
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
7-3
Table 7-2 Maximum number of loadable blocks on the SIMATIC Micro Memory Card
Size of SIMATIC Micro Memory
Card
Maximum number of blocks that can be loaded
64 KB 768
128 KB 1024
512 KB
2 MB
4 MB
8 MB
Here the maximum number of blocks that can be loaded for
the specific CPU is less than the number of blocks that can be
stored on the SIMATIC Micro Memory Card.
Refer to the corresponding specifications of a specific CPU to
determine the maximum number of blocks that can be loaded.
7.2 7.2 CPU 312
Technical data
Table 7-3 Technical data for the CPU 312
Technical data
CPU and version
Order no. [MLFB] 6ES7312-1AD10-0AB0
• Hardware version
01
• Firmware version
V2.0.0
• Associated programming package
STEP 7 as of V 5.1 + SP 4
Memory
Work memory
• Integrated
16 Kbytes
• Expandable
No
Load memory Plugged in with MMC (Max. 4 MB)
Data storage life on the MMC
(following final programming)
At least 10 years
Buffering Guaranteed by MMC (maintenance-free)
Execution times
Processing times of
• Bit instructions
Min. 0.2 μs
• Word instructions
Min. 0.4 μs
• Fixed-point arithmetic
Min. 5 μs
• Floating-point maths
Min. 6 μs
Timers/counters and their retentive address areas
S7 counters 128
• Retentive address areas
Configurable
• Default
From C0 to C7
• Counting range
0 to 999
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