key tips for using and operating safety networks
TRANSCRIPT
Key Tips for Using and Operating Safety Networks
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Q&A at the end of the presentation
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Before We Start
Moderator
Leslie Langnau Design World
Presenters
Corey Morton B&R Automation
Tom Elswick Siemens
International field bus and safety standards for factory automation
PROFIBUS covers both factory & process automation
PROFINET - based on standard ETHERNET - is its complementary network
• 1999 first specification for safety communication called PROFIsafe. • PROFIsafe has evolved to become the leading and most comprehensive safety communication technology in the world.
• Developed to IEC 61784-3-3, PROFIsafe is now the International Standard • Evaluated by TUV and BGIA
The “PROFIsafe” Protocol
• Safety messages transmitted on existing standard bus cables in coexistence with the standard messages. • Total independence from the base transmission channels be it copper wires, fiber optics, wireless, or backplanes
Safety measures include: • The consecutive numbering of the PROFIsafe messages ("sign-of life") • A time expectation with acknowledgement ("watch-dog") • A codename between sender and receiver ("F-Address") • Data integrity checks (CRC = cyclic redundancy check)
PROFIsafe message format
The “Black Channel” principle
O Decentralized
I/O
One Output channel
Positive switched
Ground Switched
uP 1
Output Signal
Data
CRC
Input data Read back
Read back
0
001100011100
CH A Pulse Check
CPUs Cross Check Each Other!
uP 2
uP 1
Certified Safety Output
Failsafe I/O modules protect locally & simplify the design and wiring, Even if the PLC and Network Fail, the I/O Module can go into Safety Lockout
Siemens Safety Integrated Solution
Siemens fail-safe I/O platforms
Detect Evaluate Respond
Sensors CPU and program I/O I/O
Standard controller
Detect Evaluate Respond
Sensors CPU and program I/O I/O
User program
Communication
Hardware/firmware Standard CPU Standard I/O Step 1
Hardware and firmware upgrades Fail-safe I/O modules
Standard program STEP 7
Standard communication via PROFIBUS or PROFINET Step 2 PROFIsafe
Safety program STEP 7 and Distributed Safety Step 3
Actuators
Actuators &
F sensors &
F I/O &
F I/O
F-
F-CPU
& F program
F program
Fail-safe controller
From standard to fail-safe automation in 3 easy steps
Safety Application - Implementations
Industry, Automotive – Application, Robotics Industry, Material Handling – Application, Gantry
Safety Application – Design & Implementation tips
Determination of safety level for each safety function Safety Evaluation Tool
www.siemens.com/safety-evaluation-tool
For all your safety needs: www.usa.siemens.com/safety
openSAFETY
The open safety standard for all industrial
Ethernet solutions
• One Bus for IO and Motion
Concept of Integrated Automation
• One Bus for IO and Motion and
SAFETY
Concept of Integrated Safety
• Available Safety Protocols o ProfiSafe is limited to Profibus and Profinet
o CIPSafety is limited to EtherNet/IP and SERCOS
o Safety EtherCAT is limited to EtherCAT
o Safety Net p is a proprietary protocol from PILZ
o openSAFETY is open and available for any fieldbus
• openSAFETY is fully open and totally independent of the
fieldbus!
Safety Market Overview
• Any Brand - Any Bus - One SAFETY standard
Concept of openSAFETY
your HMI brand
your PC
brand
your motion brand
any SAFE PLC
your IO brand
Your PANEL brand
your PLC brand
Safe line communication
• Independent, 100% open, and License free technology
• Approved as worldwide standard IEC61784-3
• TÜV certified protocol – IEC61508/11 SIL3, PL e, Cat 4
• One single Safety Standard for the complete production line
openSAFETY
• openSAFETY includes all necessary services and interfaces to the
Safety Application
Reference Model
• openSAFETY makes use of the producer / consumer
communication model
Communication Model
• openSAFETY provides an extended version of the producer / consumer
communication model allows the producer to produce separated data
for individual consumers
Communication Model
• openSAFETY server client communication. Mainly used for
configuration services and network management
Communication Model
• No faults go undetected !
Errors and Preventive/Corrective Measures
• The frame consists of two sub frames and is able to transport data up
to 254 bytes of payload data
Frame Structure
• openSAFETY domain and gateway allow the safety through different
network architect
Total Flexibility
• One time development investment o same safety standard for all fieldbuses
• Reduced development time o Certified openSAFETY stack available
• Investment security o legal and technical independence
o open source protocol stack
• Easy certification o TÜV certified conformance test
o guaranteed interoperability
openSAFETY for Component Manufacturer
Questions?
Design World Leslie Langnau [email protected] Phone: 440-234-4531 Twitter: @DW_RapidMfg
B&R Automation Corey Morton [email protected] Phone: 770-772-0400
Siemens Tom Elswick [email protected] Phone: 770-625-5762
Thank You
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