Fieldbus Standard IEC 61158

Safety Communication ProfilesIEC 61784-3

Dr. Wolfgang Stripf, Siemens AG; DKE-GAK 914.0.2

IEC 61784-3 – Funktionale Sicherheit über Netzwerke für die Prozess- und FabrikautomationIEC 61784 -Networked functional safety for process and factory automation

IEC and DKE

IEC 61508(Functional Safety)

IEC 61158 / 61784-1, -2 (Fieldbus)

IEC 61784-3(Safety Communication)

DKE

GK914 (Functional Safety)

K956 (Fieldbus)

GAK914.0.2 (Safety communication)

German "Mirror" working groups:

Status of IEC 61158 / 61784

IEC 61158(Communication Layers)

IEC 61158(Communication Layers)

PROFINET(Type 10)

PROFINET(Type 10)

PROFIBUS(Type 3)

PROFIBUS(Type 3)

-3 Data-link Service, Type 1,2, 3, 4,7,8,11,12,14...19 -3 Data-link Service, Type 1,2, 3, 4,7,8,11,12,14...19

-5 App. Layer Service, Type 1,2, 3, 4,5,7,8,9, 10, 11...19 -5 App. Layer Service, Type 1,2, 3, 4,5,7,8,9, 10, 11...19

-4 Data-link Protocol, Type 1,2, 3, 4,7,8,11,12,14...19 -4 Data-link Protocol, Type 1,2, 3, 4,7,8,11,12,14...19

IEC 61784-1(Communication Profiles)

IEC 61784-1(Communication Profiles)

Interbus(Type 6)

Interbus(Type 6)

IEC 61784-2(Realtime Ethernet RTE)

IEC 61784-2(Realtime Ethernet RTE)

IEC 61784-3(Safety Communication)

IEC 61784-3(Safety Communication)

...-3General

Part

...-3General

Part

IEC 61784-4(Security)

IEC 61784-4(Security)

IEC 61784-5(Installation)

IEC 61784-5(Installation)

IEC 61918

PROFInet IO(Type 10)

PROFInet IO(Type 10)

...-3-2CIP

Safety

...-3-2CIP

Safety

IEC 62443

...-3-1FF- SIS

...-3-1FF- SIS

...-3-3PROFI safe

...-3-3PROFI safe

...-3-6Interbus Safety

...-3-6Interbus Safety

-1Over- view

-1Over- view

-2Phys. Layer

-2Phys. Layer

-6 App. Layer Protocol, Type 1,2, 3, 4,5,7,8,9, 10, 11...19 -6 App. Layer Protocol, Type 1,2, 3, 4,5,7,8,9, 10, 11...19

Scope of 61784-3Common principles for the transmission of safety messages within a distributed network using fieldbus technology in accordance with IEC 61508The safety communication channel should not consume more than 1% of the maximum PFD or PFH of the target SIL for which the functional safety communication profile is designed

All safety systems shall provide a defined safety function response time

Scope of 61784-3Functional safety communication profiles in IEC 61784-3

Are based on “standard” fieldbus systems specified in IEC 61158Use the “black channel” approach of IEC 61508 (“unreliable” media)Define an additional “safety communication layer” to perform all the measures necessary to implement transmission of safety data in accordance with IEC 61508

Document structureIEC 61784-3: General rules and profile definitions

Common glossaryCommon conceptsOverview of technology-specific Functional Safety Communication Profiles (FSCP’s)Common layout for FSCP specifications in the following subparts

IEC 61784-3-X: Additional service and protocol specifications for CPF XDetailed FSCP specifications for Communication Profile Family X (family number assigned in IEC 61784-1 or IEC 61784-2)Edition 1 (due 2007):

IEC 61784-3-1: FF SIS™ (FSCP 1/1)IEC 61784-3-2: CIP Safety™ (FSCP 2/1)IEC 61784-3-3: PROFIsafe™ (FSCP 3/1)IEC 61784-3-6: INTERBUS Safety™ (FSCP 6/1)

Edition 2 (planned 2009), candidates:EtherCAT Safety (Germany)SafetyNet-p (Germany)RAPIsafe (Korea)EPA Safety (China)CC-Link Safety (Japan)P-Net Safety (Denmark)