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A.3
Technical Specifications for CPU
Memory
User memory
•
Integrated
•
Expandable
Loading memory
Backup
Processing Times
•
Bit operation
•
Word instructions
•
Fixed-point arithmetic
•
Floating-point maths
Timers/Counters and their Retentivity
S7 counters
•
Retentivity
•
Default
•
Counting range
IEC Counters
•
Type
•
Number
S7 timers
•
Retentivity
•
Default
•
Timing range
IEC timers
•
Type
•
Number
Siemens Controls
C7-635 Control System
A5E00155581-04
64 KB
No
Plug-in (MMC)
Ensured with MMC (maintenance-free)
Minimum 0.1 μs
Minimum 0.2 μs
Minimum 2 μs
Minimum 6 μs
256
Adjustable
From C 0 to C 7
0 to 999
Yes
SFB
Unlimited (limited only by user memory)
256
Adjustable
No retentivity
10 ms to 9,990 s
Yes
SFB
Unlimited (limited only by user memory)
Technical Specifications
A-7
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