Personal Computer User Manual

Technical data of CPU 31x
7.2 CPU 312
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
7-3
7.2 CPU 312
Technical data
Table 7-3 Technical data for the CPU 312
Technical data
CPU and version
Order number 6ES7312-1AD10-0AB0
• Hardware version
01
• Firmware version
V2.0.0
• Associated programming package
STEP 7 as of V 5.1 + SP 4
Memory
RAM
• Integrated
16 KB
• 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 operations
Min. 0.2 μs
• Word instructions
Min. 0.4 μs
• Fixed-point arithmetic
Min. 5 μs
• Floating-point arithmetic
Min. 6 μs
Timers/counters and their retentivity
S7 counters 128
• Retentive memory
Configurable
• Default
from C0 to C7
• Counting range
0 to 999
IEC Counters Yes
• Type
SFB
• Number
unlimited (limited only by RAM size)
S7 timers 128
• Retentive memory
Configurable
• Default
Not retentive
• Timer range
10 ms to 9990 s
IEC Timers Yes
• Type
SFB
• Number
unlimited (limited only by RAM size)