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IEC 61784-3 – Funktionale Sicherheit über Netzwerke für die Prozessund Fabrikautomation IEC 61784 -Networked functional safety for process and factory automation

Fieldbus Standard IEC 61158 Safety Communication Profiles IEC 61784-3

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

IEC and DKE DKE German "Mirror" working groups:

IEC 61508 (Functional Safety)

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

IEC 61784-3 (Safety Communication)

GK914 (Functional Safety)

K956 (Fieldbus)

GAK914.0.2 (Safety communication)

Status of IEC 61158 / 61784 IEC IEC 61158 61158 (Communication (CommunicationLayers) Layers)

-6 -6 App. App. Layer Layer Protocol, Protocol, Type Type1,2, 1,2,3,3,4,5,7,8,9, 4,5,7,8,9,10, 10,11...19 11...19 -1 -1 OverOverview view

-2 -2 Phys. Phys. Layer Layer

-5 -5 App. App. Layer Layer Service, Service,Type Type1,2, 1,2,33, ,4,5,7,8,9, 4,5,7,8,9,10 10, ,11...19 11...19 -4 -4 Data-link Data-linkProtocol, Protocol, Type Type1,2, 1,2,33, ,4,7,8,11,12,14...19 4,7,8,11,12,14...19 -3 -3 Data-link Data-linkService, Service, Type Type1,2, 1,2,33, ,4,7,8,11,12,14...19 4,7,8,11,12,14...19

IEC IEC 61784-1 61784-1 (Communication (CommunicationProfiles) Profiles)

PROFIBUS PROFIBUS (Type (Type3) 3)

Interbus Interbus

PROFINET PROFINET

(Type (Type6) 6)

(Type (Type10) 10)

IEC IEC 61784-2 61784-2

PROFInet PROFInet IO IO (Type (Type10) 10)

(Realtime (RealtimeEthernet EthernetRTE) RTE)

IEC IEC 61784-3 61784-3 (Safety (Safety Communication) Communication)

IEC IEC 61784-4 61784-4 (Security) (Security)

IEC IEC 61784-5 61784-5 (Installation) (Installation)

...-3 ...-3 General General Part Part

...-3-1 ...-3-1 FFFFSIS SIS

...-3-2 ...-3-2 CIP CIP Safety Safety

IEC 62443 IEC 61918

...-3-3 ...-3-3 PROFI PROFI safe safe

...-3-6 ...-3-6 Interbus Interbus Safety Safety

Scope of 61784-3 z

z

z

Common principles for the transmission of safety messages within a distributed network using fieldbus technology in accordance with IEC 61508 The 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 61784-3 z

Functional safety communication profiles in IEC 61784-3 z z z

Are based on “standard” fieldbus systems specified in IEC 61158 Use 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 structure z

IEC 61784-3: General rules and profile definitions z z z

Common glossary Common concepts Overview of technology-specific Functional Safety Communication Profiles (FSCP’s) z Common layout for FSCP specifications in the following subparts z

IEC 61784-3-X: Additional service and protocol specifications for CPF X z

Detailed FSCP specifications for Communication Profile Family X (family number assigned in IEC 61784-1 or IEC 61784-2) z Edition 1 (due 2007): z z z z

z

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: z z z z z z

EtherCAT Safety (Germany) SafetyNet-p (Germany) RAPIsafe (Korea) EPA Safety (China) CC-Link Safety (Japan) P-Net Safety (Denmark)