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ELEMENTI AUTOMATIKEELEMENTI AUTOMATIKE

S7S7--300 obitelj300 obitelj programabilnihprogramabilnih

logilogikih upravljakih upravlja

aa

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CPU specifikacijeCPU specifikacijeCPU 314 IFMCPU 314 IFM

Sklopovski ustroj...Sklopovski ustroj...

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CPUCPU--i verzija HWi verzija HW--a i SWa i SW--aa

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CPU 314IFM dostupan je u dvije verzije: with slot for memory card (6ES7314-5EA10-

0AB0)

without slot for memory card (6ES7314-5EA0x-

0AB0/6314ES7314-5EA8x-0AB0)

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SIMATIC Documentation on the

Internet http://www.ad.siemens.de/support

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ControlControl andand DisplayDisplay ElementsElements

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ControlControl andand DisplayDisplay ElementsElements ofof

thethe CPUsCPUs

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DifferencesDifferences BetweenBetween CPUsCPUs

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StatusStatus andand FaultFault DisplaysDisplays

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ModeMode SelectorSelectorSwitchSwitch

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BackupBackup batterybattery//accumulatoraccumulator Exceptions

The CPUs 312IFM and 313 do not have a realtime clock so they do not need an accumulator

battery.

The CPU 312IFM does not have a buffer whichmeans that you can not insert a battery.

Backup battery or rechargeable

battery? Next table shows the differences in the backup

provided by an accumulator and a backupbattery.

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MemoryMemory cardcard Purpose of the Memory Card

With the memory card, you can expand theload memory of your CPU.

You can store the user program and the

parameters that set the responses of the CPUand modules on the memory card.

You can also back up your CPU operating

system to a Memory Card. exceptCPU 318-2. If you store the user program on the memory

card, it will remain in the CPU when the power

is off even without a backup battery.

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AvailableAvailable MemoryMemory CardsCards

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MPIMPI andand PROFIBUSPROFIBUS--DPDP

InterfaceInterface

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MPI interface

The MPI is the interface of the CPU for the programmingdevice/OP and for communication in an MPI subnet.

Typical (default) transmission speed is 187.5 Kbps (CPU

318-2: adjustable up to 12 Mbps).

Communication with an S7-200 requires 19.2 Kbps.

The CPU automatically broadcasts its set bus

parameters (e.g. baud rate) at the MPI interface. This

means that a programming device, for example, canautomatically hook up to an MPI subnet.

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PROFIBUS-DP Interface

CPUs equipped with 2 interfaces provide aPROFIBUS-DP interface connection.

Transmission rates up to 12 Mbps are possible.

The CPU automatically broadcasts its set bus

parameters (e.g. baud rate) at the PROFIBUS-

DP interface. This means that a programming

device, for example, can automatically hookup to a PROFIBUS subnet.

In Step 7 you can switch off automatic transfer

of bus parameter.

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Removing and Inserting Modules in

the MPI Subnet You must not plug in or remove any modules

(SM, FM, CP) of an S7-300 configuration while

data is being transmitted over the MPI. If you remove or plug in S7-300 modules (SM,

FM, CP) during data transmission via the MPI,the data might be corrupted by disturbing

pulses.

You must not plug in or remove modules (SM,FM, CP) of an S7-300 configuration during data

transmission via the MPI!

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ClockClock andand RuntimeRuntime MeterMeter

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S7 314 IFMS7 314 IFM

TechnicalTechnical SpecificationsSpecifications

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SpecialSpecial FeaturesFeatures Integrated I/Os (wired with 40-pole front

connector)

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MemoryMemory cardcard

The CPU 314 IFM is available in 2

versions: with and without Memory Cardslot.

With slot for memory card: 6ES7 314-5AE10-0AB0

Without slot for memory card: 6ES7 314-5AE0x-

0AB0

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IntegratedIntegrated FunctionsFunctions ofofthethe

CPU 314 IFMCPU 314 IFM

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Ch t i tiCh t i ti F tF t ff thth I t t dI t t d

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CharacteristicCharacteristic FeaturesFeatures ofofthethe IntegratedIntegrated

InputsInputs andand OutputsOutputs ofofthethe CPU 314 IFMCPU 314 IFM

TechnicalTechnical SpecificationsSpecifications ofof thethe

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TechnicalTechnical SpecificationsSpecifications ofofthethe

AnalogAnalog InputsInputs ofofthethe CPUCPU314IFM314IFM

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TechnicalTechnical SpecificationsSpecifications ofofthethe AnalogAnalog

OutputOutput ofofthethe CPU 314IFMCPU 314IFM

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pp

SpecialSpecial InputsInputs ofofthethe CPUCPU314IFM314IFM

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p

DigitalDigital InputsInputs ofofthethe CPUCPU314IFM314IFM

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TechnicalTechnical SpecificationsSpecifications ofof thethe DigitalDigital

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TechnicalTechnical SpecificationsSpecifications ofofthethe DigitalDigital

OutputsOutputs ofofthethe CPU 314IFMCPU 314IFM

When the supply voltage is switched on

a pulse occurs on the digital outputs!This can be 50 ms long within the

permissible output current range. You

must not,therefore, use the digital

outputs to trigger high-speed counters.

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WiringWiring diagramdiagram ofofthethe CPU 314CPU 314

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gg gg

IFMIFM For the connection of integrated I/O you

require two 40-pole front connectors

Always wire up digital inputs 126.0 to 126.3with shielded cable due to their low input

delay time. Wiring errors at the analog outputs can cause

the integrated analog I/O of the CPU to be

destroyed! (for example, if the interrupt inputsare wired by mistake to the analog output).The analog output of the CPU is onlyindestructible up to 15 V (output with respectto MANA).

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BasicBasic CircuitCircuit DiagramsDiagrams ofof thethe

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BasicBasic CircuitCircuit DiagramsDiagrams ofofthethe

CPU 314 IFMCPU 314 IFM

SpecialSpecial InputsInputs andand AnalogAnalog

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pp pp gg

InputsInputs//OutputsOutputs

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DigitalDigital InputsInputs//OutputsOutputs

WiringWiring thethe AnalogAnalog InputsInputs22 wirewire measurementmeasurement transducerstransducers

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22--wirewire measurementmeasurement transducerstransducers

WiringWiring thethe AnalogAnalog InputsInputs

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Wiringg the Analogg Inputsp44--wirewire measurementmeasurement transducerstransducers

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CycleCycle andand ReactionReaction timestimes

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IntroductionIntroduction In this section, we explain what the

cycle time and the response time of theS7-300 consist of.

You can use the programming device toread the cycle time of your user

program

The response time is more important for

the process.

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CycleCycle timetime Cycle Time A Definition

The cycle time is the time that elapses duringone program cycle.

ComponentComponent PartsParts ofofthethe CycleCycle

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TimeTime

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ExtendingExtending thethe CycleCycle TimeTime Note that the cycle time of a user

program is extended by the following: Time-controlled interrupt handling process

interrupt processing

Diagnostics and error handling Communication via MPI

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ResponseResponse TimeTime Response Time A Definition

The response time is the time betweendetection of an input signal and modification of

an associated output signal.

Factors The response time depends on the cycle time

and the following factors:

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Shortest Response Time

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ShortestShortest

ResponseResponse

TimeTime

Longest Response Time

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LongestLongest

ResponseResponse

TimeTime

OperatingOperating SystemSystem ProcessingProcessing

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TimeTime Contains all the times needed to

calculate the operating systemprocessing times of the CPUs.

The times listed do not take account of Test functions, e.g. monitor, modify

Functions: Load block, delete block, compress

block Communication

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Process Image Update

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Process Imageg

Updatep

UserUserProgramProgram ProcessingProcessing TimeTime

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gg gg

The user program processing time is

made up of the sum of the executiontimes for the instructions and the

SFB/SFCs called up. These execution

times can be found in the Instruction

List. Additionally, you must multiply the

user program processing time by aCPU-specific factor. This factor is listed

in following table for the individual

CPUs.

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S7 timers

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S7 timers In the case of the CPU 318-2, the

updating of the S7 timers does notextend the cycle time.

The S7 Timer is updated every 10 ms.

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PROFIBUSPROFIBUS--DPDP interfaceinterface

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In the case of the CPU 315-2 DP/316-

2DP, the cycle time is typically extendedby 5% when the PROFIBUS-DP

interface is used.

In the case of the CPU 318-2, there is

no increase in cycle time when the

PROFIBUS-DP interface is used.

IntegratedIntegrated FunctionsFunctions

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With CPU 312-IFM and 314-IFM

operation the cycle time increases by amaximum of 10% when using integratedfunctions. Also take into consideration a

possible instance DB update during thecycle checkpoint.

Next table shows the update times of

the instance DB at the scan cyclecheckpoint, together with the

corresponding SFB runtimes.

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DimensionsDimensions

CPU 314 IFM,CPU 314 IFM, FrontFront ViewView

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CPU 314 IFM, SideCPU 314 IFM, Side ViewView

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