The importance of functional safety is increasing in order to prevent hazards and risks to people, machinery, and the environment from failure or error at the manufacturing site. However, designing the system and being certified under functional safety standards such as IEC 61508 requires a great deal of effort and time, which increases cost and could delay the product release significantly compared to non-safe development.

Functional Safety Solution

Renesas offers a one-stop functional safety solution comprised of general-purpose 32-bit microcontrollers (MCUs) and microprocessors (MPUs) with various software solution components.

  • Fast: Reduces time for constructing functional safety systems and certification process on MCUs/MPUs
  • Easy: Can be implemented in various functional safety applications
  • Reliable: Low risk for time to market by building on pre-certified components
Functional Safety Solution Reduces Development Time to 1/3

Note: The software kits in yellow boxes are certified by TÜV Rheinland.

Solution Portfolio

SolutionProduct FamilyRXRARZ
CoreRXv1RXv2RXv3CM4CM23CM33CM85CR52
Self-Test Software Kit check_boxcheckcheckcheckcheckcheckcheckcheckcheck
SIL3 System Software Kit check_box checkcheck    check
FSoE Application Software Kit check_box​ checkcheck    check
PROFIsafe Application Software Kit check_box checkcheck    check
Reference Documentcheckcheckcheckcheck*1check*1check*1check*1check*1
Reference Hardware​checkcheckcheck     
IEC 61508 Certified Compiler​s check_boxcheckcheckcheck*2*2*2*2*2

check_box Certified

SIL = Safety Integrity Level which is defined in the functional safety standard.

*1: Although the example describes using RX MCUs, it can be used for other MCUs; it is a technical document for the functional safety standard itself and not dedicated to a specific MCU/MPU Family.

*2: EWARM from IAR Systems ready

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Functional Safety System Examples

The following figures show examples of the system configuration for motor control + network control + functional safety.

Figure 1. Use RX or RA MCU in Functional Safety Part

Use RX or RA MCU in Functional Safety Part

Figure 2. Use RZ MPU in Functional Safety Part

Use RZ MCU in Functional Safety Part

Solution Introduction

Self-Test Software Kit [RA/RX/RZ]

The Self-Test Software Kit provides a self-diagnostics software library for microcontroller, a complete safety manual, user guide and IEC61508 SIL3 Certificate test report certified by TÜV Rheinland Industrie Service GmbH (Germany). For safe system development, developers can select the information they require from the safety manual and make use of the self-diagnostics software library to alleviate the burden on microcontroller-level development to conform to functional safety.

The Self-Test Software Kit diagnoses the permanent failure of CPU, internal ROM, and internal RAM. Please refer to the reference document for permanent failure diagnosis of other modules and transient failure diagnosis.

RX Functional Safety – Self-Test Software Kit
Diagnosed by Self-Test Software Kit (RX, RA)
Diagnosed by Self-Test Software Kit (RZ)

Test Timing

At start up, interval execution after start up

Running of Test Condition

All execution or division execution

Development Tool (C Compiler)

Renesas CC-RX compiler for functional safety

IAR Embedded Workbench® for RX FS

IAR Embedded Workbench® for Arm FS

SeriesCompilerContentsCertificate
RX100 series*1CC-RX compiler V2.03.00
TÜV Rheinland Certified Functional Safety

IEC61508 Certified Software

  • Self-diagnostics Software Library
  • Safety Manual
  • User Guide
  • IEC61508 Certified Document

RX100*14

RX140*15

IAR-EWRX compiler V3.10.5RX100*14
RX200 series*2CC-RX compiler V3.01.00RXv2 Core, RXv3 Core
IAR-EWRX compiler V4.14.2RX200
RX600 series*3CC-RX compiler V3.01.00RXv2 Core, RXv3 Core*16
IAR-EWRX compiler V4.14.2RX600*17
RX700 series*4CC-RX compiler V3.01.00RXv2 Core, RXv3 Core
IAR-EWRX compiler V4.14.2RX700
Cortex-M85RA8 series*5IAR-EWARM FS V9.50.3RA (CM85)
Cortex-M4RA6 series*6
RA4 series*7		IAR-EWARM V8.22.3RA (CM4)
Cortex-M33RA6 series*8
RA4 series*9		IAR-EWARM FS V8.50.10*13
IAR-EWARM FS V9.20.3		RA (CM23, 33)
Cortex-M23RA2 series*10
Cortex-R52RZ/T series*11
RZ/N series*12		IAR-EWARM FS V9.20.3RZ (CR52)

*1: RX111, RX113, RX130, RX140
*2: RX24U, RX24T, RX230/RX231, RX23T, RX23W, RX23E-A
*3: RX671, RX660, RX66T, RX66N, RX651/RX65N, RX64M
*4: RX72M, RX72T, RX72N, RX71M
*5: RA8D1, RA8M1, RA8T1
*6: RA6M1, RA6M2, RA6M3, RA6T1
*7: RA4M1
*8: RA6M4, RA6M5, RA6E1, RA6E2, RA6T2, RA6T3
*9: RA4M2, RA4M3, RA4E1, RA4E2, RA4T1

*10: RA2A1, RA2L1, RA2E1, RA2E2
*11: RZ/T2M, RZ/T2L
*12: RZ/N2L
*13: For RA6E1, RA6T2, RA4E1, and RA2E2, use V9.20.3
*14: RX111, RX113, RX130
*15: RX140
*16: RX66T, RX66N, RX651/RX65N, RX64M, RX671, RX660
*17: RX66T, RX66N, RX651/RX65N, RX64M

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SIL3 System Software Kit [RX/RZ]

The SIL3 System Software Kit provides Functional Safety Platform Software, a safety manual, user guide and IEC61508 SIL3 certificate and test report* certified by TÜV Rheinland Industrie Service GmbH (Germany).

It also includes a configuration tool for evaluating the behavior of Functional Safety Platform Software on a PC, and a software development handbook for easy development.

Key Features of the Functional Safety Platform Software in this package:

  • Perform MCU/MPU self-diagnostics and cross monitoring, which vastly reduce the development time and burden when building redundant, dual safety MCU/MPU system.
  • Execute user application software control.
  • Software partitioning function between safety and non-safety application for simplified re-certification and enabling coexistence of safety software and non-safety software.
  • Synchronous process possible on two MCUs//MPUs with multiple clock sources.

*Not included in the evaluation version of the SIL3 system software kit.

RX Functional Safety - SIL3 System Software Kit
ProductCompilerCommercial Version*1ContentsCertificate
RX72M
RX72T
RX72N
RX71M

RX671
RX660
RX66T
RX66N
RX651/RX65N
RX64M

RX24U
RX24T
RX230/RX231
RX23T
RX23W
RX23E-A		CC-RX compiler V3.01.00RTK0EF0061F22002SJ *2
TÜV Rheinland Certified Functional Safety

Commercial Version

  • IEC61508 Certified Software
    • Functional Safety Platform Software
    • Safety Manual
    • User Guide
  • IEC61508 Certified Document
  • Software Development Handbook
  • Configuration Tool and Manual

Evaluation Version

  • Functional Safety Platform Software
  • Safety Manual
  • User Guide
  • Software Developer's Handbook
  • Configuration Tool and Manual
  • PC Tool for Information Output Application
RXv2 Core, RXv3 Core
IAR-EWRX compiler V4.14.2RTK0EF0062F22002SJ *2
RZ/T2MIAR-EWARM FS V9.20.3RTK0EF0103F21001SJRZ/T2M
RZ/T2M
(Parallel Use)		RTK0EF0153F21001SJRZ/T2M (Parallel Use)
RZ/T2L
RZ/N2L		RTK0EF0154F21001SJRZ/T2L, N2L

*1: Commercial version requires a license agreement. Please contact Sales to purchase.
*2: SIL3 System Software Kit provides different programs for each MCU/MPU product group. Please specify the MCU/MPU product group and obtain the SIL3 System Software Kit for that group.

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Functional Safety Dual MCU System

Safety Network Application Software Kits

Renesas offers safety network protocol solutions that can be used with the SIL3 System Software Kit.

  1. FSoE Application Software Kit*1  [RX/RZ]
    Enables FSoE functionality on the EtherCAT slave device*2.
    • FSoE Slave Control
      • FSoE slave state management and data flow control
      • Data transmission / reception control with other user applications
      • Exchange of FSoE data with a pair of MCUs
      • Operation diagnosis of FSoE Application Software itself
    • FSoE Protocol Stack
      • Diagnosis of input Safety PDU and extraction of safety data (PDU: Protocol Data Unit)
      • CRC calculation of input safety data and generation of Safety PDU for return
  2. PROFIsafe Application Software Kit*1  [RX/RZ]
    Software for realizing PROFIsafe functionalities on the PROFINET slave devices*2.
    • PROFIsafe Slave Control
      • PROFIsafe slave state management and data flow control
      • Data transmission/reception control with other user applications
      • Exchange PROFIsafe data between dual MCUs
      • Self operation diagnosis of PROFIsafe application S/W
 

*1: In order to use Renesas' Safety Network Protocol Solution, you must meet the following requirements:

  1. You are a member of ETG.
  2. You have purchased PROFIsafe driver from Siemens.

*2: Please refer to the Industrial Ethernet & Fieldbus page for EtherCAT/PROFINET slave devices.

Functional Safety Network Application Software Kits

FSoE Application Software Kit

GroupCompilerCommercial Version*1ContentsCertificate
RX72M
RX72T
RX72N
RX71M

RX671
RX660
RX66T
RX66N
RX651/RX65N
RX64M

RX24U
RX24T
RX230/RX231
RX23T
RX23W
RX23E-A		CC-RX compiler V3.01.00RTK0EF0080F21001SJ
TÜV Rheinland Certified Functional Safety

Commercial Version

  • FSoE Application Software
  • Safety Manual
  • User Guide
  • IEC61508 Certified Document
  • Sample Applications*2:
    • Network Communication IC Interface
    • Data I/O Interface
  • Software Developer's Handbook



Evaluation Version

  • FSoE Application Software
  • Safety Manual
  • User Guide
  • Sample Applications*2:
    • Network Communication IC Interface
    • Data I/O Interface
  • Software Developer's Handbook
RXv2 Core, RXv3 Core
IAR-EWRX compiler V4.14.2RTK0EF0081F21001SJ
RZ/T2M
RZ/T2L
RZ/N2L		IAR-EWARM FS V9.20.3RTK0EF0129F21001SJCR52

Please make sure that you are member of ETG.
*1: Commercial version requires a license agreement. Please contact Sales to purchase.
*2: Two sample applications for checking the operation of the FSoE Application Software are bundled.

  • Network Communication IC Interface: Application for data exchange between network communication IC and RX MCU
  • Data I/O Interface: Application for input/output of safety data

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PROFIsafe Application Software Kit

GroupCompilerCommercial Version*1ContentsCertificate
RX72M
RX72T
RX72N
RX71M

RX671
RX660
RX66T
RX66N
RX651/RX65N
RX64M

RX24U
RX24T
RX230/RX231
RX23T
RX23W
RX23E-A		CC-RX compiler V3.01.00RTK0EF0100F21001SJ
TÜV Rheinland Certified Functional Safety

Commercial Version

  • PROFIsafe Application Software
  • Safety Manual
  • User Guide
  • IEC61508 Certified Document
  • Sample Applications*2:
    • Network Communication IC Interface
    • Data I/O Interface
  • Software Developer's Handbook
  • Not bundled*3: PROFIsafe communication control driver



Evaluation Version

  • PROFIsafe Application Software
  • Safety Manual
  • User Guide
  • Sample Applications*2:
    • Network Communication IC Interface
    • Data I/O Interface
  • Software Developer's Handbook
  • Not bundled*3: PROFIsafe communication control driver
RXv2 Core, RXv3 Core
IAR-EWRX compiler V4.14.2RTK0EF0101F21001SJ
RZ/T2M*4
RZ/T2L
RZ/N2L		IAR-EWARM FS V9.20.3RTK0EF0172F21001SJCR52

Please note that you need to purchase PROFIsafe Driver from Siemens. Refer to *3.
*1: Commercial version requires a license agreement. Please contact Sales to purchase.
*2: Two sample applications for checking the operation of the PROFIsafe Application Software are bundled.

  • Network Communication IC Interface: Application for data exchange between network communication IC and RX MCU
  • Data I/O Interface: Application for input/output of safety data

*3: Please purchase and use the following software from SIEMENS.

  • For RX: PROFIsafe Driver V2.2.2 for F-Slaves, which is included in PROFIsafe-Starterkit V3.5 with PROFIsafeprofile V2.6 MU1
  • For RZ: PROFIsafe Driver V2.2.3 for F-Slaves, which is included in PROFIsafe-Starterkit V3.5.2 with PROFIsafeprofile V2.6 MU1

*4: Please use with Parallel Use SIL3 System Software Kit.

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Reference Document

The Reference Document is a set of documents that provides guidelines for making certification documents and design tips for functional safety systems.

  1. How to write the document required to obtain the certification of the functional safety standard IEC61508.
  2. The technical know-how necessary for the development of functional safety equipment.

Content is classified into five categories with various documents

  1. Motor Control System Documents
  2. Concept Phase Documents
  3. Safety Validation Documents
  4. MCU Internal Diagnosis Documents
  5. MCU External Diagnosis Documents
RX Functional Safety – Reference Documents
MCU groupCompilerFull Set*2Note
- *1- *1RTK0EF0005Z21001ZJFull set includes 20 documents + 6 excel files

*1: This document explains the technical method for dealing with functional safety, therefore this document is not dependent on MCU nor compiler.
*2: Commercial version requires a license agreement. Please contact Sales to purchase.

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Reference Hardware [RX]

The Industrial Automation Functional Safety Reference Board is built based on Renesas' experience in safety system specifications and its implementation, and comes from detailed design, safety analysis, and diagnostics on a dual structure microcontroller system. By using this reference board as a template, the customer will be able to reduce system development time.

Since the terminals of each MCU are connected on both ends of the board, customers can extend the board specifications to match the product specifications.

  • By connecting with a network communication board, the customer can build a development environment for software with safety network connectivity.
  • When adding a motor drive controller board, the customer can build a software development environment for motor drive system with safety network connectivity.
Product nameContentsMCU
Industrial Automation Functional Safety Reference Board
  • Evaluation board
  • User manual
  • Connection diagram
  • BOM
RX72N-RX72N Dual MCU
RX71M-RX651 Dual MCU
RX111-RX111 Dual MCU
RTK0EF0058D02001BJ Board with Two RX72N MCUs

Board with Two RX72N MCUs

Board with RX71M and RX651 MCUs

Board with RX71M and RX651 MCUs

Board with Two RX111 MCUs

Board with Two RX111 MCUs

IEC 61508 Certified Compilers

For constructing software in the functional safety system, it is necessary to prove that the compiler generates valid code. Renesas offers an IEC 61508 certified C compiler for functional safety.

TÜV-SUD certified IAR Embedded Workbench also available.

Product NameContents
C/C++ Compiler Package for RX Family
TÜV Rheinland Certified Functional Safety
  • Compiler component: CC-RX compiler V2.03.00 and V3.01.00
  • IEC 61508 SIL3 certified
IEC 61508 Certification Kit for RX Compilers
V3.01.00: RTCRX0000TC03ZNR
V2.03.00: RTCRX0000TC02ZNR
  • IEC 61508 certificate issued by TÜV Rheinland for the C/C++ compiler for the RX family V2.03.00 and V3.01.00
  • Safety manual, etc.

 

Documentation
Type Title Date
Brochure
Industrial Networks Brochure
PDF 8.18 MB 日本語
Flyer
Functional Safety Solution for Industrial Automation
PDF 432 KB 日本語 , 简体中文
White Paper
Functional Safety in Industrial Automation
PDF 1.75 MB 日本語 , 简体中文
Brochure
Industrial Automation Brochure
PDF 7.93 MB 日本語 , 简体中文
4 items
Functional Safety Network with Safety Drive System
Functional Safety Network with Safety Drive System
Motor Control System with Industrial Network and Functional Safety
Motor Control System with Industrial Network and Functional Safety