Profibus DP

PROFIBUS-DP Product Development

Steffen SchleierSteffen SchleierProduct Manager: Product Manager:

SPEED7SPEED7--PLCPLC--Processor, PLC7100/PLC7200 PLC on Chip,Processor, PLC7100/PLC7200 PLC on Chip,Slice I/O Backplane Controller Master/SlaveSlice I/O Backplane Controller Master/SlaveSpeedbus Backplane FPGAsSpeedbus Backplane FPGAs

[email protected]@profichip.com

AIMEX 2010 PROFIBUS-DP Product Development 3

The Job

The Job:

Bringing your

product(I/O, sensors, drives …)

to


Don‘t waste your time with the Profibus Basics!

Your Product

FDL, Target_Rotation_Time,SD1, SAP, tsd_min,idle_time, GSD, …


Agenda

OverviewThe Physical InterfaceThe Protocol ASICThe Profibus Software StackGSD FileTest

PROFIBUS-DP Product Development


Overview

Transmission Technologies

BasicProfiles


The Physical Interface

: These signals are mandatory.

D-Sub9 Connector – Signal Assignment

The signal assignment of the D-Sub9 Connector is defined as follows:

Pin No. Signal Description

1 Shield Shield/functional ground

2 M24 Ground for +24V output voltage

3 B-Line RxD/TxD-P Receive Transmit data - plus

4 CNTR-P Repeater control signal (direction control), RTS signal

5 DGND Digital ground

6 VP Supply voltage (+5V)

7 P24 Output voltage +24V

8 A-Line RxD/TxD-N Receive Transmit data – minus

9 CNTR-N Repeater Control signal (direction control)

the preferred connector type for PROFIBUS-DP/FMS is a 9pin D-Sub Connectorthe female part is located at the device sideother connectors are allowed, if they supply at least the mandatory signals



The signal assignment of the M12 connector is defined as follows:

Pin No. Signal Description

1 VP Supply voltage (+5V)

2 A-Line RxD/TxD-N Receive Transmit data – minus

3 DGND Digital ground

4 B-Line RxD/TxD-P Receive Transmit data - plus

5 Shield Ground connection

Thread Shield Ground connection

M12 Connector – Signal Assignment

: These signals are mandatory.



Example: RS485 with 9-pin D-Sub connector

Adapt existing solutions (copy-and-paste) and you are done.

Keep the wires short to avoid additional

capacities!


Overview


BasicProfiles

Copy & Paste Schematic


Software

Handlingthe

Profibus Protocol


The Protocol ASIC

VPC3+CSupporting PROFIBUS DP-VO,DP-V1 and DP-V2 protocol

Parallel 8-Bit microcontroller interface

4 kB communication RAM

5V or 3.3V supply voltagewith 5V tolerant inputs

Low power consumption

PQFP44 package (RoHS)

VPC3+SSupporting PROFIBUS DP-VO,DP-V1 and DP-V2 protocolParallel 8-Bit microcontroller interfaceI2C, SPI interfaceHW-PLL for ISOM mode

4 kB communication RAM3.3V supply voltagewith 5V tolerant inputsUltra low powerTFBGA48 6x8 mm (RoHS)Available Q2/2009

VPCLS2Supporting PROFIBUS DP-V0

32 Bit I/O,8 Bit diagnostic inputs

5V supply voltage

PQFP80 package (RoHS)


The Protocol ASIC

Example: VPC3+CLF3 PROFIBUS-DP Slave ASIC

PROFIBUS

ApplicationProcessor

Physical Interface

Input Data

Output Data

Output Data

Input Data PROFIBUSCycle

ApplicationCycle

DATA ADDRESSXCSXRDXWR

XREADYINT

DataExchange.Req

DataExchange.Res


VPC3+C

Buffer structure:

D U Diagnosis-Buffer

ND UDin-Buffer

ND UDout-Buffer

Read-Config-Buffer

Set-Slave-Address-Buffer

Config-Buffer

Parameter-Buffer

changed by user

UART

Profibus Part Application Processor


DP-V0 /V1 /V2

Mandatory!

Optional

Optional


PROFIBUS DPV2

Slave to Slave communication

DxB = Data exchange broadcast

Publisher: sends input data via broadcast message to master and subscriber.

Publisher: sends input data via broadcast message to master and subscriber.

Subscriber: receives publisher data.Subscriber: receives publisher data.


PROFIBUS DPV2

Isochronous Mode


Overview


BasicProfiles

PROFIBUS-DPProtocol ASIC



Software

Application Processor


The Processor

Check your processor in use:

Parallel bus interface? highest flexibility

Serial interface? less choices, maybe additional HW required

“Emulate” the ASIC interface? could be quite slow

Supply and IO voltage? maybe level shifter needed

Performance still OK? take account of the additional software

State-of-the-art tool chain? debugging could be cumbersome


The Connection: Parallel Multiplexed


Connection: Parallel Demultiplexed


The Connection: SPI and I2C

VPC3+S only!


Software

Softwarestack Options


DP-V0 /V1 /V2 Software View


The Software

VPC3+C / VPC3+S Software Stack:

dp_if.hdp_if.cdp_isr.cdp_dpl.h

dp_fdl.cdp_msac1.cdp_msac2.c

main.c

dp_user.cdp_debug.c

dp_cfg.hdp_inc.hplatform.h

EASY4711.gsd

ASIC configuration & driver

Processor specific part

Application interface

Batch files: make, …


Overview


BasicProfiles


Profibus SoftwarestackSourcecode



GSD File Example


Overview


BasicProfiles


Profibus SoftwarestackSourcecode

Copy & Paste Schematic GSD T

emplat

e

Your Application


Test

Test your System


How to get started …

The VPC3+C Evaluation Kit:

RS485Interface

Fiber OpticInterface

ProtocolASIC

ProcessorRAM

ISP Flash

Proc

esso

r Int

erfa

ce

Proc

esso

r Por

ts

PRO

FIB

US

I/Os

MMCCard U

SB RS232


Some Other (Important) Steps

Joining the Regional Profibus Association (RPA)Requesting an Ident NumberInvestment in test and development tools

Developing a configuration software (optional)

Writing the product manualDeveloping application examples for controllers (popular PLCs)Product certification (EMC, PROFIBUS)

Thanks for your attention!


Then your are part of …


Growing Profibus Organisation


PROFIBUS – global presence

25 Regional PROFIBUS Associations (RPA) worldwide

30 Competence Centers (PCC)

7 Test Labs (PTL) worldwide

Accreditation by PROFIBUS International (PI) assure quality

standard

Consulting, Seminars, Development……..

Profibus DP

Documents

Transcript of Profibus DP