simatic s7-300 - megaelektrik.net

4
SIMATIC S7-300
Central processing units
CPU 312C to CPU 317F-2 DP
■ Technical specifications (continued)
6ES7 315-
6FF01-0AB0
CPU/blocks
DB
- Number, max. 1,023; DB 0
reserved
6ES7 317-
6FF00-0AB0
2,047; DB 0
reserved
- Size, max. 16 KByte 64 KByte
FB
- Number, max. 2,048; see
instruction list
2,048; see
instruction list
- Size, max. 16 KByte 64 KByte
FC
- Number, max. 2,048; See
instruction list
2,048; see
instruction list
- Size, max. 16 KByte 64 KByte
OB
- Number, max. see
instruction list
see
instruction list
- Size, max. 16 KByte 64 KByte
Nesting depth
- per priority class 8 8
- additional levels within an
error OB
4 4
CPU/processing times
• for bit instruction, min. 0.1 µs 0.1 µs
• for word instruction, min. 0.2 µs 0.1 µs
• for integer math, min. 2 µs 0.2 µs
• for floating-point math, min. 6 µs 2 µs
Timers/counters and their
retentive characteristics
S7 counter
-Number 256 512
• of which retentive without battery
- adjustable Yes Yes
• Counting range
- lower limit 0 0
- upper limit 999 999
IEC counter
- available Yes Yes
- Type SFB SFB
S7 times
-Number 256 512
• Retentivity
- adjustable Yes Yes
- preset
No retention No retention
• Timing range
- lower limit 10 ms 10 ms
- upper limit 9,990 s 9,990 s
IEC timer
- available Yes Yes
- Type SFB SFB
6ES7 315-
6FF01-0AB0
6ES7 317-
6FF00-0AB0
Data areas and their retentive
characteristics
Flags
- Number 2,048 Byte 4,096 Byte
- adjustable retentivity Yes; MB 0
to MB 2047
- Number of clock memories 8;
1 memory byte
Data blocks
- Number, max. 1,023; DB 0
reserved
Yes; MB 0
to MB 4095
8;
1 memory byte
2,047; DB 0
reserved
- Size, max. 16 KByte 64 KByte
Local data
- per priority class, max. 1,024 Byte 1,024 Byte
Address area
I/O address area
- Inputs 2 KByte 8 KByte
-Outputs 2 KByte 8 KByte
• of which distributed
- Inputs 2 KByte 8 KByte
-Outputs 2 KByte 8 KByte
Process image
- Inputs 384 Byte 1,024 Byte
-Outputs 384 Byte 1,024 Byte
Digital channels
- Inputs 16,384 65,536
-Outputs 16,384 65,536
- Inputs, of which central 1,024 1,024
- Outputs, of which central 1,024 1,024
Analog channels
- Inputs 1,024 1,024
-Outputs 1,024 1,024
- Inputs, of which central 256 256
- Outputs, of which central 256 256
Configuration
• Racks, max. 4 4
• Modules per rack, max. 8 8
Number of DP masters
- integral 1 2
- via CP 1 2
Number of FMs and CPs that can
be operated (recommendation)
-FM 8 8
- CP, point-to-point 8 8
- CP, LAN 10 10
4/32 Siemens ST 70 · 2005