CPU

Model

CPU 314-2PtP

Order No.

UN 314-2AG14-0AB0

Physical properties

Demension（W × H × D）

40 × 125 × 120 mm

Power supply characteristics

Rated voltage（DC）

24 V

Pemissible range,lower limit（DC）

18.0 V

Pemissible range，upper limit（DC）

28.0 V

External fusing for supply lines(recommendation)

Min.3 A

Inrush current,typical value

3.5 A

Power supply at power+,Max.

650 mA

Power consumption,typical value

4 W

环境特性

Working environment temperature

Horizontal installation position: -10℃ to 70℃

Vertical installation position: -10℃ to 40℃

Relative humidity

5% to 95%, non condensing 

Protection level

Protection level of IEC 60529: IP 20 

Interface characteristics

Micro-USB

Directly connecting PC to download users’ program 

DB9（X1）

MPI communication 

DB9（X2）

Point to point RS485 serial communication 

TF

1. Upgrade  firmware; 2. Load  storage ; 3. Data storage 

Memory/ Back-up

Working memory

Built-in

128 KB

Expandable

NO

Loaded memory

Built-in(flash) 

1 MB

Plug-pull (TF card) 

32 GB Max.

Back-up

No battery; built-in FLASH to keep: program and data 

CPU / blocks

DB

Quantity, maximum

1024, range of figure: 1~16000

Capacity, maximum   

64 KB

FB

Quantity, maximum

1024, range of figure: 0~7999

Capacity, maximum   

64 KB

FC

Quantity, maximum

1024, range of figure: 0~7999

Capacity, maximum   

64 KB

OB

Loop block

OB 1

Day clock interrupt block 

OB 10

Delayed interrupt block

OB 20、OB 21

Loop interrupt block 

OB 32、OB 33、OB 34、OB 35

Hardware interrupt block

OB 40

Diagnosis interrupt block

OB 82

Fault response block

OB 80、OB 85

Re-initiate block 

OB 100

Synchronization error response block 

OB 121、OB 122

CPU/ processing time

Bit instructions, minimum

0.05 us

Word instructions, minimum

0.06 us

Integer math, minimum

0.06 us

Floating -point math, minimum

0.20 us

Timer counters and their  holding property

S7 Counters

Quantity 

256

Retentives

Adjustable; Reset: C0~C7

Range of counter    

Lower limit: 0; Upper limit: 999    

IEC counters

Availability  

yes

Type    

SFB

S7 Timers

Quantity

256

Retentive

Adjustable; Reset: without retentivity

Range of timer 

Lower limit: 10ms; Upper limit: 9990s    

IEC timers

Availability  

yes

Type    

SFB; no quantity limit, only be limited by working storage    

Data ares and their retentive characteristics

Mark

Quantity

256 bytes

Retentive

Adjustable; Reset: MB0 ~ MB15

Quantity of timer storage   

8(1 memory byte)    

Data blocks

Quantity, maximum

1024；DB 1 ~ DB 16000

Capacity, maximum 

64 KB

Retentive

Adjustable; not retained features by DB  

Local data

Every priority, maximum    

32 KB

Address area

Input 

1024 bytes

Output 

1024 bytes

Process image 

Input 

1024 bytes

Output 

1024 bytes

Digital channels

Input 

1024

Output 

1024

Analog channels

Input 

256

Output 

256

Configuration

Rack，maximum

4

I/O module quantity  rack, maximum

8

Time 

Timer 

Hardware timer

Yes

Buffer  

Yes；12 days (in the ambient temperature of 40 ° C)

Error for every day, maximum  

10 s

Operation hours counter

Quantity

1

Number

0

Range Value

0 ~ 2    hours (when using SFC 101)

Selectivity

1 hours

Retentive

Yes; need to reclock when restarting  

Synchronization with upper computer time

Yes

Testing and commissioning functions

Monitor function

Status/control variable

Yes 

Variable 

Inputs, outputs, flags bit, DBs, times, counters 

Variable number, maximum

30

Monitor variables, maximum 

30

Modify Variables, maximum

14

Force 

Supporting 

Yes

Variable 

Inputs, outputs

Number, maximum

10

Availability

Yes 

Number of entries, maximum 

500

Alterable

No

Basic communication 

Supporting 

Yes

Interface 1

Interface type

Built-in RS 485 interface 

Isolation

No

Interface power

15 ~ 30 V DC, maximum: 200 mA

Functionality  

MPI

Supporting

Connection quantity

2

Transmission rate, maximum

187.5 KBit/s

Interface  2

Interface type

Built-in RS 485 interface

Isolation

Yes

Interface power supply

4.5 ~ 5.5 V DC，Max：200 mA

Functionality 

MPI

No

Point to point

Yes

CPU / programming

Programming language

Compatible IEC 61131-1

Nesting levels

8

User program security/ password protection

Yes 

System function (SFC)

SFC（0、1、2、3、4、5、6、20、21、28、29、30、31、32、33、34、36、37、38、39、40、41、42、43、44、46、47、49、50、52、64、65、66、67、68、69、101、120、121、122、123、124）

See the system function list (SFC)"

System function blocks (SFB)

SFB（0、1、2、3、4、5）

See the system function list (SFC)"