Cpu 315-2 Dp - Siemens SIMATIC S7-300 Series Reference Manual

1.4.6

CPU 315-2 DP

DP master or DP slave
You can operate the CPU 315-2 DP on your 2nd interface (PROFIBUS-DP
interface) as DP Master or DP Slave in a PROFIBUS-DP network.
For details on PROFIBUS-DP characteristics of CPU 315-2 DP refer to Chapter 2.
CPU 315-2 DP, Technical Data
CPU and Product Version
MLFB 6ES7 315-2AF03-0AB0
S
Hardware version 01
S
Firmware version V 1.1.0
S
Matching programming STEP 7 V 5.0;
Service Pack 03
package
Memory
Work memory
S
integral 64 KB
S
Expandable no
Load memory
S
integral 96 KB RAM
S
Expandable FEPROM Up to 4 MB
S
Expandable RAM no
Backup Yes
S
With battery All data
S
Without battery 4736 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
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
S7 timers 128
S
Adjustable retentivity from T 0 to T 127
S
Preset No retentive times
S
Timing range 10 ms to 9990 s
IEC Timers Yes
S
SFB
Type
Data areas and their retentive characteristics
Retentive data area as a 4736 bytes
whole (inc. flags, timers,
counters)
Bit memories 2048
S
Adjustable retentivity MB 0 to MB 255
S
Preset MB 0 to MB 15
Clock memories 8 (1 memory byte)
Data blocks max. 255 (DB 0 reserved)
S
Size max. 16 KB
S
Adjustable retentivity 8 DB; max. 4096 data bytes
S
Preset No retentivity
Local data (non-alterable) max. 1536 bytes
S
Per priority class 256 bytes
Blocks
OBs See Instruction List
S
Size max. 16 KB
Nesting depth
S
Per priority class 8
S
additional levels within 4
an error OB
FBs max. 192
S
Size max. 16 KB
FCs max. 192
S
Size max. 16 KB
CPUs
1-63