Siemens CPU 312 IFM User Manual

CPUs
1-60
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
1.4.5 CPU 315
Technical Specifications of the CPU 315
CPU and Product Version
MLFB
 Hardware version
6ES7 315-5AF03-0AB0
01
 Firmware version V 1.1.0
 Matching programming
package
STEP 7 V 5.0;
Service Pack 03
Memory
Work memory
 integral 48 KB
 Expandable no
Load memory
 integral 80 KB RAM
 Expandable FEPROM Up to 4 MB
 Expandable RAM no
Backup Yes
 With battery All data
 Without battery 4736 bytes, configurable,
(data, flags, timers)
Processing times
Processing times for
 Bit instructions 0.3 s minimum
 Word instructions 1 s minimum
 Double integer math 2 s minimum
 Floating-point math
instructions
50 s minimum
Timers/Counters and their retentive characteristics
S7 counters 64
 Adjustable retentivity from C 0 to C 63
 Preset from C 0 to C 7
 Counting range 0 to 999
IEC Counters Yes
 Type SFB
S7 timers 128
 Adjustable retentivity from T 0 to T 127
 Preset No retentive times
 Timing range 10 ms to 9990 s
IEC Timers Yes
 Type
SFB
Data areas and their retentive characteristics
Retentive data area as a
whole (inc. flags, timers,
counters)
4736 bytes
Bit memories 2048
 Adjustable retentivity MB 0 to MB 255
 Preset MB 0 to MB 15
Clock memories 8 (1 memory byte)
Data blocks max. 255 (DB 0 reserved)
 Size max. 16 KB
 Adjustable retentivity max. 8 DB, 4096 data bytes
in all
 Preset No retentivity
Local data (non-alterable) max. 1536 bytes
 Per priority class 256 bytes
Blocks
OBs See Instruction List
 Size max. 16 KB
Nesting depth
 Per priority class 8
 additional levels within
an error OB
4
FBs max. 192
 Size max. 16 KB
FCs max. 192
 Size max. 16 KB
Address areas (I/O)
Peripheral address area
Digital/Analog 1 KB/1 KB (freely
addressable)
Process image (cannot be
customized)
128 bytes/128 bytes
Digital channels max. 1024/1024
Analog channels max. 256/128

Siemens CPU 312 IFM Specifications

General

Brand	Siemens
Model	CPU 312 IFM
Category	Controller
Language	English