Applications & Tools. Failsafe and standard cross communication of the MSS 3RK3 via AS-Interface. SIRIUS Safety. FAQ February 2012

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1 Cover sheet Failsafe and standard cross communication of the MSS 3RK3 via AS-Interface SIRIUS Safety FAQ February 2012 Applications & Tools Answers for industry.

2 Industry Automation und Drives Technologies Service & Support Portal This document is from the Service&Support portal of Siemens AG, Industry Sector, Industry Automation and Drive Technologies. The terms of use listed on this web site apply ( The link below takes you directly to the download page of this document. Question How can safety-related or non-safety-related communication be implemented between two or more MSS's? Answer The MSS 3RK3 Modular Safety System can transmit and receive safetyrelated and non-safety-related data on the AS-i bus. This is done using the "simulation of slaves" and "monitoring of AS-i slaves" functions of the MSS 3RK3 Advanced. The transmitting MSS simulates an AS-i slave and thus starts data exchange with the AS-i master. The information to be transmitted is made available on the entire bus by broadcasting. One or more MSS's receive this information by listening in on this signal and evaluating the logic parameterization accordingly. In this way, failsafe signals (e.g. emergency stop and protective door monitoring) and non-safety-related signals (e.g. start commands or diagnostic data) are transmitted between the MSS's. Two slave profiles each are provided for safety-related and non-safetyrelated MSS cross communication. Failsafe slave profiles: 2F-DI F-DO Standard slave profiles (non-safety-related): Std 4E/4A A/B 4E/3A Depending to the external wiring of sensors and actuators as well as the diagnosis features, safety functions up to SIL3 acc. EN resp. PL e acc. EN ISO can be realized via cross communication. 2 V 1.1, Entry ID:

3 Table of contents Table of contents Table of contents Basics of AS-Interface Configuration of the AS-i bus system S7-CP343-2P DP/AS-i Link Adv. or IE/AS-i Link DP/AS-i F-Link DP/AS-i Link 20E Properties of the AS-i slave types Functions of the MSS 3RK3 Advanced on the AS-i bus Main procedure for parameterizing cross communication with MSS on the AS-i bus Application example: Failsafe communication between two MSS s Application 1: Failsafe communication by slave profile "2F-DI" Application 2: Failsafe communication by slave profile "F-DO" Application 3: Standard communication using the slave profile "Std 4E/4A" Commissioning Teaching code tables Procedure for teaching code tables at MSS cross communication Teaching of 2F-DI ASIsafe slaves Automatic teaching of F-DO ASIsafe slaves Contacts/Support...28 V 1.1, Entry ID:

1 Basics of AS-Interface 1 Basics of AS-Interface What is AS-Interface?

Open network topology, i.e. star, bus, or tree topologies are possible Network

and simple installation Fast response times (cyclic data exchange up to 5 ms for 31

4 1 Basics of AS-Interface 1 Basics of AS-Interface What is AS-Interface? Standardized, bit-oriented field bus system For use at the lowest field level Single master system Open network topology, i.e. star, bus, or tree topologies are possible Network extent up to 100m (expansion up to 600m possible) Shaped data/power cable for fast and simple installation Fast response times (cyclic data exchange up to 5 ms for 31 stations, up to 10 ms for 62 stations) For failsafe data transmission (ASIsafe) up to SIL3 per EN and PL e per ISO :2006 Further information is available at: 4 V 1.1, Entry ID:

Insert the CP343-2P from the hardware catalog into the S7-300 rack 2.

5 2 Configuration of the AS-i bus system 2 Configuration of the AS-i bus system 2.1 S7-CP343-2P Procedure: 1. Insert the CP343-2P from the hardware catalog into the S7-300 rack 2. Open the object properties of the CPs with a double-click Select tab "Slave Configuration" 3. Define the AS-i slave by double-clicking the line with AS-i address #1 V 1.1, Entry ID:

6 2 Configuration of the AS-i bus system 4. Choose "AS-i Standard Slave Universal" from the "Module" drop-down menu Depending on the type of slave used, parameters IO-Code/ ID-Code/ ID1- Code/ ID2-Code for failsafe ASIsafe slaves must be set manually based on the following table. Slave type IO ID ID1 ID2 2F-DI 0 B F F F-DO 6 B F D Optional The configuration can also be loaded from the AS-i bus, when it is ready for operation, into the HW Config. This is done by clicking "Load to Switching Device" on the "AS-i Slave Options" tab. The HW Config must then be loaded into the PLC. It is also possible to configure the AS-i master on the CP using a pushbutton. You will find more detailed information in the technical documentation at: 6 V 1.1, Entry ID:

2 Configuration of the AS-i bus system 2.2 DP/AS-i Link Adv. or IE/AS-i Link Procedure: 1. Insert DP/IE/AS-i Link Adv. from the hardware catalog into the configuration 2.

7 2 Configuration of the AS-i bus system 2.2 DP/AS-i Link Adv. or IE/AS-i Link Procedure: 1. Insert DP/IE/AS-i Link Adv. from the hardware catalog into the configuration 2. Drag AS-i slave into the address table 3. Open the slave properties by double-clicking the line of AS-i address # Choose "AS-i Standard Slave Universal" from the "Module" drop-down menu 4 V 1.1, Entry ID:

2 Configuration of the AS-i bus system Depending on the type of slave used, parameters IO-Code/ ID-Code/ ID1- Code/ ID2-Code for failsafe ASIsafe slaves

Insert DP/AS-i F-Link Adv. from the hardware catalog into the configuration 2. Drag AS-i F slave into the address table 3.

8 2 Configuration of the AS-i bus system Depending on the type of slave used, parameters IO-Code/ ID-Code/ ID1- Code/ ID2-Code for failsafe ASIsafe slaves must be set manually based on the following table. Slave type IO ID ID1 ID2 2F-DI 0 B F F F-DO 6 B F D 2.3 DP/AS-i F-Link Procedure: 1. Insert DP/AS-i F-Link Adv. from the hardware catalog into the configuration 2. Drag AS-i F slave into the address table 3. Open the slave properties by double-clicking the line of AS-i address #1. Parameters ID/ ID1/ ID2 Code are already set by default. The IO code must be created manually. 8 V 1.1, Entry ID:

2 Configuration of the AS-i bus system 4. Optionally, the slaves can also be created using their MLFB.

4 DP/AS-i Link 20E Procedure for configuring per SIMATIC Step 7: 1.

Drag AS-i F slave into the address table 3.

9 2 Configuration of the AS-i bus system 4. Optionally, the slaves can also be created using their MLFB. This is done by clicking the "Selection" button 2.4 DP/AS-i Link 20E Procedure for configuring per SIMATIC Step 7: 1. Insert DP/AS-i Link 20E from the hardware catalog into the configuration 2. Drag AS-i F slave into the address table 3. Open the slave properties by double-clicking the line of AS-i address #1. Parameters ID/ ID1/ ID2 Code are already set by default. The IO code must be created manually. 4. Click the Selection button. Select the appropriate slave-profile in the directory Modular Safety System 3RK3 Advanced of the AS-i components catalogue. 1 3 V 1.1, Entry ID:

10 2 Configuration of the AS-i bus system Procedure for using as Stand- Alone AS-i Master: If the AS-i Bus is used only for failsafe cross communication between MSS, then the PD/AS-i Link 20E can operate stand-alone. Hence a connection to a supervisory PLC is not mandatory. Advantages are the compact design and the power supply of the module per AS-i bus. Via two push buttons as well as diagnostic LEDs the device will be configured and the AS-Interface diagnosed. Note If an AS-I Master operates stand-alone, it s not possible to control AS-I outputs of Standard or A/B slaves. This affects the lock-command of position switches with interlock, for example. Configuration of DP/ AS-i Link 20E Press the SET-Button. the devices changes from protection mode into configuration mode (LED CM flashes). The master adopts all slaves in its configuration, which are currently connected the simulated slaves by MSS. Thus the slaves must be parameterized in MSS central unit. AS-i slaves added or removed during commissioning, will be adopted automatically. Per additional pushing of the SET- Button, the master changes back in protection mode. 10 V 1.1, Entry ID:

11 3 Properties of the AS-i slave types 3 Properties of the AS-i slave types Non-safety-related slave profile "Std. 4E/4A" 4 inputs and 4 outputs are available A full AS-i address is required (up to 31 stations) Non-safety-related slave profile "A/B 4E/3A" 4 inputs and 3 outputs are available A half AS-i address is required (up to 62 stations) Non-safety-related slave profile "CTTx-" Diagnostics slave Transmission of diagnostics data set to the AS-i master A full AS-i address is required (up to 31 stations) Safety-related ASIsafe slave profile "2F-DI" Two-channel transmission of the failsafe sensors (e.g. ASIsafe emergency stop push button) A full AS-i address is required (up to 31 stations) Safety-related data frame with 8x4-bit code sequence Can be used for failsafe communication ("2F-DI" must be parameterized both in the transmitter and in the receiver) For failsafe data transmission below a DP/AS-i F link Safety-related ASIsafe slave profile "F-DO" Control of safe AS-i outputs, for example Transmission of up to 4 different, mutually interlocked signals Transmission of 2 additional, non-safety-related auxiliary signals A full AS-i address is required (up to 31 stations) Safety-related data frame with 7x4-bit code sequence Can be used for failsafe communication ("F-DO" must be parameterized in the transmitter and in the receiver) No teaching of ASIsafe code tables necessary Not compatible with DP/AS-i F-Link V 1.1, Entry ID:

4 Functions of the MSS 3RK3 Advanced on the AS-i bus 4 Functions of the MSS 3RK3 Advanced on the AS-i bus Simulating AS-i slaves The MSS 3RK3 Advanced can simulate up to 4 non-safety-related and up

Simulation of safety-related AS-i input slaves Setting and resetting safety-related AS-i outputs Monitoring of slaves MSS 3RK3 Advanced evaluates up to 14 non-safety-related AS-i slaves and up to 31

This slave is connected in the logic. The MSS therefore starts to exchange data with the AS-i master and provides the information on the AS-i bus as a broadcast.

12 4 Functions of the MSS 3RK3 Advanced on the AS-i bus 4 Functions of the MSS 3RK3 Advanced on the AS-i bus Simulating AS-i slaves The MSS 3RK3 Advanced can simulate up to 4 non-safety-related and up to 12 safety-related AS-i slaves. Simulation of safety-related AS-i input slaves Setting and resetting safety-related AS-i outputs Monitoring of slaves MSS 3RK3 Advanced evaluates up to 14 non-safety-related AS-i slaves and up to 31 safety-related AS-i input slaves (monitor functionality). For cross communication between MSS's, the functions "Monitor" and "Simulate" slaves are used. The transmitting MSS simulates a slave. This slave is connected in the logic. The MSS therefore starts to exchange data with the AS-i master and provides the information on the AS-i bus as a broadcast. The receiving MSS monitors this slave and evaluates the signal in the logic parameterization. Broadcast Broadcasting is a type of data transmission, in which no recipient is addressed directly. The transmitter makes the information available to all stations on the AS-i bus without itself knowing the recipient or recipients. Note For parameterization of the 3RK3 MSS Advanced central unit, the MSS ES SP2 software is required. #4 Broadcast Transmitter Receiver &... #4 & #4 12 V 1.1, Entry ID:

5 Main procedure for parameterizing cross communication with MSS on the AS-i 5 Main procedure for parameterizing cross communication

Slave responds Transmitter 5 Receiver monitors the signal status of #1 Receiver 1) For failsafe communication, either the slave-type

Signals of the simulated slaves are connected in MSS ES. 3.

Slave type is parameterized with the corresponding address in MSS ES (navigation window: subsystem configuration) (for the recipient,

13 5 Main procedure for parameterizing cross communication with MSS on the AS-i 5 Main procedure for parameterizing cross communication with MSS on the AS-i bus Note: assignment of the same slavetype in both stations 1) 6 3 Master polls the slave #1 cyclically Slave responds Transmitter 5 Receiver monitors the signal status of #1 Receiver 1) For failsafe communication, either the slave-type "2F-DO" or "F-DO" is to be used in both MSS's. Transmitter (MSS) 1. Simulates slave at an AS-i address (e.g. address #1) 2. Signals of the simulated slaves are connected in MSS ES. 3. AS-i master starts data exchange with simulated slaves (MSS) (a normal slave from the point of view of the master) Receiver (MSS) 4. Slave type is parameterized with the corresponding address in MSS ES (navigation window: subsystem configuration) (for the recipient, this is a real slave) 5. MSS listens in on the frame exchange between all slaves (that are known to it) on the bus. 6. Signals of the slave are connected in MSS ES and evaluated accordingly in the central unit. V 1.1, Entry ID:

6 Application example: Failsafe communication between two MSS s 6

emergency stop command on the MSS "transmitter" is transmitted to the MSS

The latter shuts down the drive safety via contactors Q A & Q B when

PLC with AS-i CP 343-2 Station A Transmitter Cross communication Station B

14 6 Application example: Failsafe communication between two MSS s 6 Application example: Failsafe communication between two MSS s The emergency stop command on the MSS "transmitter" is transmitted to the MSS "receiver" by failsafe communication. The latter shuts down the drive safety via contactors Q A & Q B when E-Stop is operated. PLC with AS-i CP Station A Transmitter Cross communication Station B Receiver QA QB L1 L2 L3 QA QB Note Schematic representation! For simplicity's sake, other components such as start buttons, feedback circuit, etc. are omitted. 14 V 1.1, Entry ID:

15 7 Application 1: Failsafe communication by slave profile "2F-DI" 7 Application 1: Failsafe communication by slave profile "2F-DI" Station A (transmitter): Parameterization of the central unit Procedure: 1. Insert the MSS Advanced from the catalog into the configuration (slot 3). 2. Open the object properties of the module by right-clicking or double-clicking line Scroll to the parameter "Simulated slaves" in the properties window. Parameterize the slave profile at address #1 as "2F-DI." The MSS assigns address #1 on the AS-i bus. The signal is now available in the logic diagram and can be connected. 3 Station A (transmitter): Parameterization of the logic diagram Signal of the slave simulated by the MSS. The MSS provides the emergency stop shutdown command by broadcasting on the AS-i bus. V 1.1, Entry ID:

. 2 2. Click submenu "Subsystem (Slot3/ AS-Interface)" in the navigation window. 3.

16 7 Application 1: Failsafe communication by slave profile "2F-DI" Station B (receiver): Parameterization of the central unit 1 Procedure: 1. Insert the MSS Advanced from the catalog into the configuration (slot 3) Click submenu "Subsystem (Slot3/ AS-Interface)" in the navigation window. 3. Insert the slave simulated by the MSS (Station A) from the catalog of AS-i components into the line of address #1. Use type "3RK3131- *AC10 (2F-DI)." 3 Note The slave type must be the same in both MSS's. If a "2F- DI" slave is simulated, an AS-i slave of type "2F-DI" must also be inserted in the receiving MSS! 16 V 1.1, Entry ID:

17 7 Application 1: Failsafe communication by slave profile "2F-DI" Option "determine online" If the installation of the entire AS-i is ready to operate, the bus configuration can also be read out online. Connect your PC/PG with the MSS Advanced and click on the "determine online" button. The MSS reads out the entire structure of the AS-i network and takes over the properties of all active stations on the bus into the subsystem configuration. Unlike the manually created configuration, the slave type and the order number are displayed as "AS-i Standard Slave (Universal)." Station B (receiver): Parameterization of the logic diagram Shutdown signal, which is monitored and read in by the receiving MSS on the AS-i bus (monitoring functionality). V 1.1, Entry ID:

18 8 Application 2: Failsafe communication by slave profile "F-DO" 8 Application 2: Failsafe communication by slave profile "F-DO" Station A (transmitter): Parameterization of the central unit Procedure: 1. Insert the MSS Advanced from the catalog into the configuration (slot 3.) 2. Open the object properties of the module by right-clicking or doubleclicking line Scroll to the parameter "Simulated slaves" in the properties window. Parameterize the slave profile at address #1 as "S-6.B.D (F-DO)." The MSS assigns address #1 on the AS-i bus. The signal is now available in the logic diagram and can be connected. 3 Station A (transmitter): Parameterization of the logic diagram Signal of the slave simulated by the MSS. The MSS provides the emergency stop shutdown command by broadcasting on the AS-i bus. 18 V 1.1, Entry ID:

19 8 Application 2: Failsafe communication by slave profile "F-DO" Station B (receiver): Parameterization of the central unit and subsystem 1 Procedure: 1. Insert the MSS Advanced from the catalog into the configuration (slot 3.) 2 2. Click submenu "Subsystem (Slot3/ AS-Interface)" in the navigation window Insert the slave simulated by the MSS (Station A) from the catalog of AS-i components into the line of address #1. Use type "3RK3131- *AC10 (F-DO)." Note The slave type must be the same in both MSS's. If a "F- DO" slave is simulated, an AS-i slave of type "F-DO" must also be inserted in the receiving MSS! V 1.1, Entry ID:

20 8 Application 2: Failsafe communication by slave profile "F-DO" Option "determine online" If the installation of the entire AS-i is ready to operate, the bus configuration can also be read out online. Connect your PC/PG with the MSS Advanced and click on the "determine online" button. The MSS reads out the entire structure of the AS-i network and takes over the properties of all active stations on the bus into the subsystem configuration. Unlike the manually created configuration, the slave type and the order number are displayed as "AS-i Standard Slave (Universal)." Station B (receiver): Parameterization of the logic diagram Shutdown signal, which is monitored and read in by the receiving MSS on the AS-i bus (monitoring functionality.) 20 V 1.1, Entry ID:

21 9 Application 3: Standard communication using the slave profile "Std 4E/4A" 9 Application 3: Standard communication using the slave profile "Std 4E/4A" Extension of the application: To switch on the contactors in station B again, the signal of the start button is not transmitted to station B by failsafe communication on the ASi bus. The procedure is explained using the simulated slave profile "Std. 4E/4A." The "A/B 4E/3A" profile can also be used for this function. In this case, an AS-i half-address is required and the slave type "A/B 4E/3A" must be simulated or configured in both stations. PLC with AS-i CP 343-2P Start Station A Cross communication Transmitter Station B Receiver QA QB L1 L2 L3 QA QB The normally-open contact of the 3SB3 start button is read in through the failsafe input "IN3" of the MSS 3RK3 central unit and logically combined with the parameterized output cell (in this example, address 2.) The output cell is therefore available as a broadcast signal on the entire AS-i bus. Alternately, the start button can be read in through a standard input of the MSS 3RK3 system or via Profibus if the start signal is monitored dynamically (edge detection) in the MSS ES software. V 1.1, Entry ID:

22 9 Application 3: Standard communication using the slave profile "Std 4E/4A" Station A (transmitter): Parameterization of the central unit Procedure: 1. Insert the MSS Advanced from the catalog into the configuration (slot 3.) 2. Open the object properties of the module by right-clicking or doubleclicking line Scroll to the parameter "Simulated slaves" in the properties window. Parameterize the slave profile at address #2 as "Std 4E/4A." The MSS assigns address #2 on the AS-i bus. The signal is now available in the logic diagram and can be connected. 3 Station A (transmitter): Parameterization of the logic diagram Signal of the slave simulated by the MSS. The MSS provides the start command by broadcasting on the AS-i bus. 22 V 1.1, Entry ID:

Click submenu "Subsystem (Slot3/ AS-Interface)" in the navigation window. 2 3 3.

23 9 Application 3: Standard communication using the slave profile "Std 4E/4A" Station B (receiver): Parameterization of the central unit and subsystem 1 Procedure: 1. Insert the MSS Advanced from the catalog into the configuration (slot 3.) 2. Click submenu "Subsystem (Slot3/ AS-Interface)" in the navigation window Insert the MSS Advanced from the catalog of AS-i components into the line of address #2. 4. Open the properties of the Std slave by double-clicking and select the "Monitor non safe i/o" checkbox. 4 V 1.1, Entry ID:

24 9 Application 3: Standard communication using the slave profile "Std 4E/4A" Note The slave type must be the same in both MSS's. If a "Std 4E/4A" slave is simulated, an AS-i slave of type "Std 4E/4A" must also be inserted in the receiving MSS! Station A (transmitter): Parameterization of the logic diagram Start signal that is monitored and read in by the receiver on the AS-i bus (monitoring functionality). 24 V 1.1, Entry ID:

This must be taught once to the MSS during commissioning or after a device has been replaced. Only complete code tables can be taught to MSS.

25 10 Commissioning 10 Commissioning 10.1 Teaching code tables Safety-related ASIsafe slaves have a fixed code sequence. Each failsafe AS-I Input slave (2F-DI slave profile) broadcasts a unique code table, which is embedded in the device. This must be taught once to the MSS during commissioning or after a device has been replaced. Only complete code tables can be taught to MSS. This means, that both channels of an ASIsafe slave have to be in 1 -state. Therefore E-Stop push buttons have to be unlocked or guard doors must be closed for example. 1. Connect your PC/PG to MSS central unit and open online view per command button Open Online. Select the "Teach ASIsafe code tables" command from the "Target system" menu Once the MSS has learned all slaves (display =100%), click the "Adopt code tables" button. The MSS now stores the code sequences in the memory module. 2 Note Code tables can also be learned automatically. Simply press the RESET button (for 3 sec.) V 1.1, Entry ID:

26 10 Commissioning 10.2 Procedure for teaching code tables at MSS cross communication Teaching of 2F-DI ASIsafe slaves Similar to failsafe ASIsafe slaves simulated slaves with the slave profile 2F-DI have to be thought by the receiving MSS 3RK3. To transmit a complete code sequence, a certain order during commissioning of the modular safety systems has to be kept. Precondition is an operating AS-i infrastructure (AS-i Master, Power- resp. Data decoupling module and optionally components for bus expansion) and a configured AS-i master. Both MSS central units have to be connected to the AS-i bus. Sender The Sender - MSS central unit will be switched in test- or safety mode. The information, which shall be transmit, has to be in On -state. Therefore the corresponding input- and logic conditions must be fulfilled. Then a code sequence of the simulated slave is generated and transmitted by the Sender - MSS. When not all starting conditions can be fulfilled (e.g. not wired sensors), it is possible to force the signal and change its state manually. Forcefunctionality is only available in test mode. Per clicking right on the signal path, forcing can be selected. 26 V 1.1, Entry ID:

10 Commissioning Note Receiver Now the code sequence can be thought to the receiving MSS central unit per menu command Teach ASIsafe code tables.

27 10 Commissioning Note Receiver Now the code sequence can be thought to the receiving MSS central unit per menu command Teach ASIsafe code tables. The teaching process is available in all three operation modes. And can also be done without a parameterized subsystem or program logic. Connect your PC/PG via the local interface or if applicable via Profibus DP. Open the parameterization online. In the online view the menu command Teach ASIsafe code tables is available. A detailed description can be found in chapter Be aware that the safety code will be proceeded in the operation modes test mode and safety mode. Outputs will be set in On -state. Ensure with appropriate safeguarding that no hazard situation occur Automatic teaching of F-DO ASIsafe slaves The F-DO slave profile works different to the 2F-DI slaves. A code sequence is dedicated to each AS-I address. This correlation is known to the MSS central unit. Hence a teaching process is not necessary anymore. As soon as the slave is configured in the AS-i master, the receiving MSS recognizes. The code sequence will be adopted automatically in each operation mode. V 1.1, Entry ID:

28 11 Contacts/Support 11 Contacts/Support Siemens AG Technical Assistance Tel.: +49 (911) Fax: +49 (911) V 1.1, Entry ID:

Applications & tools. Control of AS-i position switch with interlock per MSS 3RK3 SIRIUS MSS 3RK3. FAQ March Answers for industry.

Applications & tools. Control of AS-i position switch with interlock per MSS 3RK3 SIRIUS MSS 3RK3. FAQ March Answers for industry. Cover sheet Control of AS-i position switch with interlock per MSS 3RK3 SIRIUS MSS 3RK3 FAQ 63111931 March 2013 Applications & tools Answers for industry. Industry Automation und Drives Technologies Service