CPU 314

General information

Hardware product version

01

Firmware version

V3.3

Engineering with

• ● Programming package

STEP 7 V5.5 + SP1 or higher or STEP 7 V5.2 + SP1 or higher with HSP 218

Supply voltage

Rated value (DC)

• ● 24 V DC

Yes

permissible range, lower limit (DC)

19.2 V

permissible range, upper limit (DC)

28.8 V

external protection for power supply lines (recommendation)

2 A min.

Mains buffering

• ● Mains/voltage failure stored energy time

5 ms

• ● Repeat rate, min.

1 s

Input current

Current consumption (rated value)

650 mA

Current consumption (in no-load operation), typ.

140 mA

Inrush current, typ.

3.5 A

I²t

1 A²·s

Power loss

Power loss, typ.

4 W

Memory

Work memory

• ● integrated

128 kbyte

• ● expandable

No

• ● Size of retentive memory for retentive data blocks

64 kbyte

Load memory

• ● Plug-in (MMC)

Yes

• ● Plug-in (MMC), max.

8 Mbyte

• ● Data management on MMC (after last programming), min.

10 y

Backup

• ● present

Yes; Guaranteed by MMC (maintenance-free)

• ● without battery

Yes; Program and data

CPU processing times

for bit operations, typ.

0.06 µs

for word operations, typ.

0.12 µs

for fixed point arithmetic, typ.

0.16 µs

for floating point arithmetic, typ.

0.59 µs

CPU-blocks

Number of blocks (total)

1 024; (DBs, FCs, FBs); the maximum number of loadable blocks can be reduced by the MMC used.

DB

• ● Number, max.

1 024; Number range: 1 to 16000

• ● Size, max.

64 kbyte

FB

• ● Number, max.

1 024; Number range: 0 to 7999

• ● Size, max.

64 kbyte

FC

• ● Number, max.

1 024; Number range: 0 to 7999

• ● Size, max.

64 kbyte

OB

• ● Description

see instruction list

• ● Size, max.

64 kbyte

• ● Number of free cycle OBs

1; OB 1

• ● Number of time alarm OBs

1; OB 10

• ● Number of delay alarm OBs

2; OB 20, 21

• ● Number of cyclic interrupt OBs

4; OB 32, 33, 34, 35

• ● Number of process alarm OBs

1; OB 40

• ● Number of startup OBs

1; OB 100

• ● Number of asynchronous error OBs

4; OB 80, 82, 85, 87

• ● Number of synchronous error OBs

2; OB 121, 122

Nesting depth

• ● per priority class

16

• ● additional within an error OB

4

Counters, timers and their retentivity

S7 counter

• ● Number

256

Retentivity

• — adjustable

Yes

• — lower limit

0

• — upper limit

255

• — preset

Z 0 to Z 7

Counting range

• — lower limit

0

• — upper limit

999

IEC counter

• ● Number

Unlimited (limited only by RAM capacity)

S7 times

• ● Number

256

Retentivity

• — adjustable

Yes

• — lower limit

0

• — upper limit

255

• — preset

No retentivity

Time range

• — lower limit

10 ms

• — upper limit

9 990 s

IEC timer

• ● present

Yes

• ● Type

SFB

• ● Number

Unlimited (limited only by RAM capacity)

Data areas and their retentivity

retentive data area in total

All, max. 64 KB

Flag

• ● Number, max.

256 byte

• ● Retentivity available

Yes; MB 0 to MB 255

• ● Retentivity preset

MB 0 to MB 15

• ● Number of clock memories

8; 1 memory byte

Data blocks

• ● Number, max.

1 024; Number range: 1 to 16000

• ● Size, max.

64 kbyte

• ● Retentivity adjustable

Yes; via non-retain property on DB

• ● Retentivity preset

Yes

Local data

• ● per priority class, max.

32 kbyte; Max. 2 KB per block

Address area

I/O address area

• ● Inputs

1 024 byte

• ● Outputs

1 024 byte

Process image

• ● Inputs

1 024 byte

• ● Outputs

1 024 byte

• ● Inputs, adjustable

1 024 byte

• ● Outputs, adjustable

1 024 byte

• ● Inputs, default

128 byte

• ● Outputs, default

128 byte

Digital channels

• ● Inputs

1 024

• — of which central

1 024

• ● Outputs

1 024

• — of which central

1 024

Analog channels

• ● Inputs

256

• — of which central

256

• ● Outputs

256

• — of which central

256

Hardware configuration

Number of expansion units, max.

3

Number of DP masters

• ● integrated

0

• ● via CP

4

Number of operable FMs and CPs (recommended)

• ● FM

8

• ● CP, PtP

8

• ● CP, LAN

10

Rack

• ● Racks, max.

4

• ● Modules per rack, max.

8

Time of day

Clock

• ● Hardware clock (real-time)

Yes

• ● retentive and synchronizable

Yes

• ● Backup time

6 wk; At 40 °C ambient temperature

• ● Deviation per day, max.

10 s; Typ.: 2 s

• ● Behavior of the clock following POWER-ON

Clock continues running after POWER OFF

• ● Behavior of the clock following expiry of backup period

Clock continues to run with the time at which the power failure occurred

Operating hours counter

• ● Number

1

• ● Number/Number range

0

• ● Range of values

0 to 2^31 hours (when using SFC 101)

• ● Granularity

1 hour

• ● retentive

Yes; Must be restarted at each restart

Clock synchronization

• ● supported

Yes

• ● to MPI, master

Yes

• ● to MPI, slave

Yes

• ● in AS, master

Yes

• ● in AS, slave

No

Digital inputs

Number of digital inputs

0

Digital outputs

Number of digital outputs

0

Analog inputs

Number of analog inputs

0

Analog outputs

Number of analog outputs

0

Interfaces

Number of industrial Ethernet interfaces

0

Number of RS 485 interfaces

1; MPI

Number of RS 422 interfaces

0

1. Interface

Interface type

Integrated RS 485 interface

Physics

RS 485

Isolated

No

Power supply to interface (15 to 30 V DC), max.

200 mA

Functionality

• ● MPI

Yes

• ● PROFIBUS DP master

No

• ● PROFIBUS DP slave

No

• ● Point-to-point connection

No

MPI

• ● Transmission rate, max.

187.5 kbit/s

Services

• — PG/OP communication

Yes

• — Routing

No

• — Global data communication

Yes

• — S7 basic communication

Yes

• — S7 communication

Yes; Only server, configured on one side

• — S7 communication, as client

No

• — S7 communication, as server

Yes

Communication functions

PG/OP communication

Yes

Data record routing

No

Global data communication

• ● supported

Yes

• ● Number of GD loops, max.

8

• ● Number of GD packets, max.

8

• ● Number of GD packets, transmitter, max.

8

• ● Number of GD packets, receiver, max.

8

• ● Size of GD packets, max.

22 byte

• ● Size of GD packet (of which consistent), max.

22 byte

S7 basic communication

• ● supported

Yes

• ● User data per job, max.

76 byte

• ● User data per job (of which consistent), max.

76 byte; 76 bytes (with X_SEND or X_RCV); 64 bytes (with X_PUT or X_GET as server)

S7 communication

• ● supported

Yes

• ● as server

Yes

• ● as client

Yes; Via CP and loadable FB

• ● User data per job, max.

180 byte; With PUT/GET

• ● User data per job (of which consistent), max.

240 byte; as server

S5 compatible communication

• ● supported

Yes; via CP and loadable FC

Number of connections

• ● overall

12

• ● usable for PG communication

11

• — reserved for PG communication

1

• — adjustable for PG communication, min.

1

• — adjustable for PG communication, max.

11

• ● usable for OP communication

11

• — reserved for OP communication

1

• — adjustable for OP communication, min.

1

• — adjustable for OP communication, max.

11

• ● usable for S7 basic communication

8

• — reserved for S7 basic communication

0

• — adjustable for S7 basic communication, min.

0

• — adjustable for S7 basic communication, max.

8

S7 message functions

Number of login stations for message functions, max.

12; Depending on the configured connections for PG/OP and S7 basic communication

Process diagnostic messages

Yes

simultaneously active Alarm-S blocks, max.

300

Test commissioning functions

Status block

Yes; Up to 2 simultaneously

Single step

Yes

Number of breakpoints

4

Status/control

• ● Status/control variable

Yes

• ● Variables

Inputs, outputs, memory bits, DB, times, counters

• ● Number of variables, max.

30

• — of which status variables, max.

30

• — of which control variables, max.

14

Forcing

• ● Forcing

Yes

• ● Forcing, variables

Inputs, outputs

• ● Number of variables, max.

10

Diagnostic buffer

• ● present

Yes

• ● Number of entries, max.

500

• — adjustable

No

• — of which powerfail-proof

100; Only the last 100 entries are retained

• ● Number of entries readable in RUN, max.

499

• — can be set

Yes; From 10 to 499

• — preset

10

Service data

• ● can be read out

Yes

Ambient conditions

Ambient temperature during operation

• ● min.

0 °C

• ● max.

60 °C

Configuration

Configuration software

• ● STEP 7

Yes; V5.2 SP1 or higher with HW update

Programming

• ● Command set

see instruction list

• ● Nesting levels

8

• ● System functions (SFC)

see instruction list

• ● System function blocks (SFB)

see instruction list

Programming language

• — LAD

Yes

• — FBD

Yes

• — STL

Yes

• — SCL

Yes

• — CFC

Yes

• — GRAPH

Yes

• — HiGraph®

Yes

Know-how protection

• ● User program protection/password protection

Yes

• ● Block encryption

Yes; With S7 block Privacy

Dimensions

Width

40 mm

Height

125 mm

Depth

130 mm

Weights

Weight, approx.

280 g