Siemens SIMATIC S7-300 Series Reference Manual page 63
Cpu specifications
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Also See for SIMATIC S7-300 Series:
- Manual (676 pages) ,
- Reference manual (574 pages) ,
- Installation and operating manual (356 pages)
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Technical Specifications of the CPU 314 IFM
CPU and Product Version
MLFB
6ES7 314-...-0AB0
-5AE03-
S
Hardware version
01
S
Firmware version
V 1.1.0
S
Matching programming
STEP 7 V5.0,
Service Pack 3
package
Memory
Work memory
S
integral
32 KB
S
Expandable
no
Load memory
S
integral
48 KB RAM
48 KB
FEPROM
S
Expandable FEPROM
no
S
Expandable RAM
no
Backup
Yes
S
With battery
All data
S
Without battery
144 bytes
Processing times
Processing times for
S
0.3 ms minimum
Bit instructions
S
1 ms minimum
Word instructions
S
2 ms minimum
Double integer math
S
50 ms minimum
Floating-point math
instructions
Timers/Counters and their retentive characteristics
S7 counters
64
S
Adjustable retentivity
from C 0 to C 63
S
Preset
from C 0 to C 7
S
Counting range
0 to 999
IEC Counters
Yes
S
Type
SFB
S7 timers
128
S
Adjustable retentivity
from T 0 to T 7
S
Preset
No retentive times
S
Timing range
10 ms to 9990 s
IEC Timers
Yes
S
SFB
Type
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
Data areas and their retentive characteristics
-5AE10-
Retentive data area as a
whole (inc. flags, timers,
01
counters)
V 1.1.0
Bit memories
S
Adjustable retentivity
S
Preset
Clock memories
Data blocks
32 KB
S
Size
No
S
Adjustable retentivity
S
Preset
48 KB RAM
Local data (non-alterable)
S
Per priority class
Up to 4 MB
Blocks
No
OBs
S
Size
Nesting depth
S
Per priority class
S
additional levels within
an error OB
FBs
S
Size
FCs
S
Size
Address areas (I/O)
Peripheral address area
S
Digital
–
integral
S
Analog
–
integral
Process image (cannot be
customized)
Digital channels
Analog channels
CPUs
max. 2 DB, 144 bytes
2048
MB 0 to MB 143
MB 0 to MB 15
8 (1 memory byte)
max. 127 (DB 0 reserved)
max. 8 KB
max. 2 DB, 144 data bytes
No retentivity
1536 bytes
256 bytes
See Instruction List
max. 8 KB
8
4
128
max. 8 KB
128
max. 8 KB
0 to 123/0 to 123
124 to 127/124, 125
256 to 751/256 to 751
128 to 135/128, 129
128 bytes/128 bytes
max. 992+20 integral/
max. 992+16 integral
max. 248+4 integral/
max. 124+1 integral
1-47
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