Specifications

CPUs
1-66
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
1.4.7 CPU 316-2 DP
DP master or DP slave
You can operate the CPU 316-2 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 316-2 DP refer to Chapter 2.
CPU 316-2 DP, Technical Data
CPU and Product Version
MLFB
 Hardware version
6ES57 316-2AG00-0AB0
01
 Firmware version V 1.1.0
 Matching programming
package
STEP 7 V 5.0;
Service Pack 03
Memory
Work memory
 integral 128 KB
 Expandable no
Load memory
 integral 192 KB
 Expandable FEPROM Up to 4 MB
 Expandable RAM no
Backup Yes
 With battery All data
 Without battery 4736 bytes
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 17
Clock memories 8 (1 memory byte)
Data blocks 511 (DB 0 reserved)
 Size max. 16 KB
 Adjustable retentivity max. 8 DB 4096 data bytes
 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. 256
 Size max. 16 KB
FCs max. 256
 Size max. 16 KB