PROFINET IO PROFINET IO. Decentral Periphery

Transcription

1 PROFINET IO 1 1

2 PROFINET as Modular Technology Motion Control MES Safety Process Automation Verteilte Automation Fieldbus Integration Security 2 Network Installation Network Management Real-time Communication WEB Integration 2

3 Why Ethernet for? Arguments and Advantages: Ethernet is a well proven standard in the Office- World Ethernet is used since long time for communication between Controllers in the Automation industry Ethernet should also be used to communicate between Controllers and devices IT- Functionality can also be used in 3the field level Vertical integration of the field-communication with Manufacturing Execution Systems (MES) 3

4 of PROFINET IO PROFINET CBA PROFINET IO Komponenten- Basierte Kommunikation Fill Fill WEB-Services Real-Time 4 IRT 4

5 What is PROFINET IO? PROFINET IO uses Communication via Real-Time and Non Real-Time Device description based on XML-standard PROFINET IO is with Ethernet connection and PROFINET communication. PROFINET 5 5

6 How is PROFINET IO implemented? PROFINET PROFIBUS PROFINET Device Configuration in well known way PLC-User program in well known way : only the bus interface changes boards can be used universally Flexible integration of decentral field devices on PROFIBUS and PROFINET possible Investment Protection 6 GSD 6

7 Device Designation and their Roles PROFINET : Data exchange of IO signals to assigned field devices Device containing the control program Austausch der PROFINET IO-Device: Field Device attached to the PROFINET PROFINET IO-Supervisor: HMI and Diagnosis Station 7 7

8 Device Designation and their Roles e.g. PLC Application program with access to process signals via PLC process image Configuration Production data Alarms Field Device IO-Device Diagnosis Up/Download Read and write IO data Programming Device/PC PROFINET Supervisor Commissioning, Plant diagnosis PROFINET Diagnosis Status/Control 8 Parameterization 8

9 Communication Stack IT-Applications e.g. HTTP SNMP DHCP... TCP/UDP IP 1 PROFINET Applications Standard- Data Ethernet Real-Time- Data 2 Real-Time RT 1 Open channel for UDP/IP Device parameterization and configuration Reading of diagnosis data Negotiation of the communication channel for the user data 2 Real-Time channel RT Performant cyclic user 9 data Event controlled messages/alarms 9

10 Communication Paths Non Real Time Start up Set up of an application relation Set up of a communication relation Exchange of non time critical informations (read diagnosis,..) Exchange of general device informations. Read and modify device parameters. Read and write process related informations Real-Time Cyclic data exchange Consumer-Provider-Model Monitoring of the communication Alarms 10 10

11 Further relevant Protocols for PROFINET IO DHCP (Dynamic Host Configuration Protocol) for assignment of IP-addresses. DNS (Domain Name Service) to manage logical names SNMP (Simple Network Management Protocol) to read status and statistic informations. ARP (Address Resolution Protocol) to convert IP-Addresses into Ethernet Addresses ICMP (Internet Control Message Protocol) used to transmit error informations

12 The PROFINET IO The PROFINET device model is comparable with PROFIBUS Compact devices Modular devices The reusability of existing IO-Modules from PROFIBUS guarantees investment protection for manufacturers and plant owners

13 The PROFINET IO Existing IO- and PROFINET-Bus-Interface PROFINET-Device Bus- Interface Slot 0 Sub slot 1 Sub slot 2 Sub slot 3 Sub slot 4 Slot 1 Sub slot 1 Slot 2 IO-Data is always assigned to a sub slot. Every sub slot may have IO-Daten as well as alarms 13 Sub slot 4 Sub slot 6 Slot 3 13

14 Objects and Services Real Time Data Exchange of the cyclic process-data Update time is configurable Characteristics cyclic Consumer-Provider-Model unconfirmed configurable update time buffer to buffer 14 The user data is accompanied by status informationen Data exchange is time controlled 14

15 Objects and Services Non Real Time Data Acyclic data exchange Parameterization of IO-Devices Configuration of IO-Devices Read status informationen Characteristics Acyclic data exchange Bidirectional One to one Connection oriented 15 Queued Confirmed Monitoring of Repetition with SequenceCounter 15

16 Record Data (Read and Write Services) Diagnosis information can be read from the user from every device at any time Logbook entries for alarms and error messages Identification informations acc. to PNO-Guideline I&M Functions Information functions about real and logical module structures. IO-Data Objects (to read back the IO-data)

17 Objects and Services Alarms are Real Time data Report of operating states system defined events (e.g. pull and plug of boards) user defined events Characteristics acyclic queued confirmed directed and secured 17 17

18 Alarms All Inclusive Process-Alarme shall be used if the event is process related Diagnosis-Alarms shall be used if the error or event is coming up device internal Pull and Plug-Alarm Return-Alarm Redundancy alarm Control by Supervisor Release by Supervisor The alarms can be prioritised differently 18 18

19 19 GSD Identical engineering view for for PROFIBUS and and PROFINET 19

20 From to 1 Every Ethernet device has the same priority in the network field devices will be assigned to a controller during network configuration The device description of the field devices is defined in a GSD-file GSD 1 Configuration with -Tool GSD import and net configuration in the Tool 2 Device configuration and download into the Controller Automatic data exchange between 3 Controller and Field Devices Controller Field devices Ethernet 20

21 The (GSD ) Structure of a GSD File Profile Body DeviceIdentity-Block (VendorID, DeviceID, InfoText, VendorName) DeviceFunction-Block (Family, MainFamily and ProductFamily) ApplicationProcess-Block DeviceAccessPointList ModuleList ValueList ChannelDiagList GraphicsList CategoryList ExternalTextList 21 21

22 GSD Example 22 22

23 Unique Device Identification A world wide unique Device-Ident-Number is attached to each PROFINET IO-Device The 32-bit Device-Ident-Number is split in: 16-bit Manufacturer Identification (e.g. 002A Siemens) 16-bit Device Identification (e.g ET200S) The Manufacturer Identification is assigned by the PNO The device identification can be assigned by the manufacturer 002A Manufacturer Identification (e.g. Siemens) Device Identification (e.g. ET200S) 23

24 IO userprogram L EW 100 T AW 200 PAE PAA inputs outputs The IO-data is stored in the process image 24 IO-Device 24

25 Example of : PROFINET with DCP (Discovery Configuration Protocol) Gerätename Device wird is assigned einer to MAC-Adresse a MAC-Address zugeordnet Offline-Configuration 1 Objects Each & Device Services receives a device name (e. g. Device Pult2) Description Configuration tool Address automatically Assignment assigns the Start IP-Address up procedure 25 Start up: assigns IP-Address to the device C0 IM151-3 Pult2 2 Online: Write device name into the device PROFINET MAC Addr 1 MAC Addr 2 25

26 The Start-up Phase The Application Relation (IO-AR) between the devices is set-up by the so called Context Management (CM) via UDP/IP and RPC (Remote Procedure Call). This step establishes the communication relation for the process data (IO data CR) automatically. IO-data and update rate is specified here CM Set-up of the Communication Relation 26 IO-Device CM 26

27 The Start-up Phase Subsequently, the process data is transmitted cyclically between the devices via the real-time channel The cyclic date exchange is done via the real-time channel Diagnosis data and alarms are transferred in the acyclic real-time channel Process Data CM RT Driver Set-up of the Communication Relation Cyclical process data in Real-time 27 IO-Device RT Driver CM Process Data 27

28 between Devices There is an Application Relation (AR) defined between and IO-Device An AR may contain several Communication Relations (CR s) for configuration, process data and alarms Standard channel Configuration Real-Time channel Process data Record data CR IO data CR Alarm CR AR Real-Time channel Alarms 28 IO-Device 28

29 Standard-Ethernet-Frame with PROFINET- Extension Dest MAC 6 Byte Source. MAC 6 Byte 2 Byte Standard Ethernet-Header Ethernet-Frame Bit Order Preamble Sync 7 Byte 1 Byte VLAN- Tag 2 Byte Ethertype Ethertype Frame ID 2 Byte 2 Byte VLAN-Tag: Definition of the priority The minimum Ethernet frame is 64 bytes Process Data up to 1440 Byte PROFINET Data 29 Status Information 4 Byte FCS 4 Byte * Q 29

30 Reduction Ratio Send Clock x (e.g.1 ms) Send cycle e.g. 2 ms (Reduction Ratio Send clock) Send Clock y Phase 1 Phase 2 Phase 1 Frame 1 Frame 2 Frame n Frame 1 Frame n Frame x Frame 1 Frame 2 Frame Send Offset 30 30

31 Quick Error Localization through Structured Error Information The diagnostic information is structured hierarchically Station name, slot, subslot,channel, channel type, error information SNMP completes the diagnosis with network information Layer 1: Failure in Device (e.g. Valve Station 2) SF BF ON subslot Channel Kanal 00 Channel Kanal 11 Channel Kanal Kanal Channel 0 0 Kanal 0 Kanal Channel 1 1Kanal 1 Kanal Channel 2 2Kanal Network Channel Kanal xxdiagnosis Kanal Channel x xkanal Channel x x Layer 2: Failure in Module (e.g. Analog Input Module 3) 31 Layer 3: Failure in Channel (e.g. Cable Break in Channel 2) Slot 1 Slot 2 Slot 3 31

32 Report of Alarms Alarm Processing Acyclic Service- Timeout IO Controller RTA_Data(Alarm) RTA_ACK RTA_Data(Alarm_Ack) RTA_ACK IO Device Invoke Alarm 32 Acyclic Service- Timeout 32

33 Network Diagnosis IO-Device1 IO-Device2 The switch passes the PROFINET-Diagnosis from the IO-Devices to the Controller IO-Device Switch is configured as IO-Device (GSDML) IO-Device3 IO-Device2 Switch reports Network-failure as PROFINET- Diagnosis to the (1) Additional SNMP-channel for Standard- Information (2) 33

34 Diagnosis there, where it is needed Diagnosis information is transmitted as alarm from the IO-Device to the The alarm triggers a reaction in the PLC program IO-Supervisor gets the diagnosis information directly from the IO-Device Display diagnosis information on service PG or HMI station Error Routine in Diagnosis information IO-Device IO-Supervisor 34 PROFINET Display on PG/HMI Read diagnosis directly from IO-Device 34

35 Integration of PROFIBUS in PROFINET PROFINET Transparent communication between Ethernet and PROFIBUS Parts or even the complete PROFIBUS is represented by a 35 The is a PROFINET participant on Ethernet and DP-Master for PROFIBUS PROFIBUS Openness through integration of existing field buses is Investment protection for device manufacturers and users 35

36 PROFINET IO / PROFIBUS - System PROFINET PROFIBUS PROFIBUS Both devices need the 36 same parameters 36

37 5 Controller- Configuration Tool 4 Connect: I/O combination Write: User parameters 6 7 Data exchange with any other bus system GSDML PROXY-Configuration Tool Any Device Description 37