Manual Gateway generic
Contents
1. Network Interface 1 Network Interface 2 Control Word Eas a M x o 7 zZ Network 2 Control Word Contents b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 bi b0 DO R e MSB LSB Master Mode These bits are used to determine the operation mode of the onboard fieldbus master via the on boatd slave interface these bits are not available on the master scanner side For more information consult the Network Interface addendum for the on board master scan ner e Reset This bit is used to reset the gateway 1 The gateway will perform a complete reset and re initialize both network interfaces 0 No action 1 These bits are only available on fieldbus master configurations Live List Master configurations only The Live List indicates the hea Slave 0 7 Slave 8 15 Slave 16 23 Slave 24 31 Slave 32 39 Slave 40 47 Slave 48 23 31 39 4T 55 Slave 56 63 Master Interface Chapter 8 th of the slaves associated with the on board fieldbus master The list is assembled by the master and forwarded to the on board slave interface each gateway cycle Slave Interface Slave 0 7 Slave 8 15 Slave 16 3 Slave 24 Slave 32 1 9 Slave 40 Slave 48 5 Slave 56 23 31 392. application software that handles the extraction of the serial data from the TCP IP frame This PC software will create a virtual serial port on the PC to be used with current applications on the PC While this method does not add any new features to the original application the solution is trans parent to the attached equipment and requires few if any changes to either the hardware or software In most cases the end user is not aware that the direct serial connection is being replaced by a virtual one over an Ethernet IP network Bridges or Device Servers work s well in message based networks where the acyclic data packets can be re transmitted on another type of network maintaining its original structure and format However most if the industrial networks have also incorporated I O data traffic that sends cyclic data for fast updates to achieve real time data communication All these protocols requires Layer 7 processing to bridge data between two different networks Another limitation with Device Servers is lack of web based data handling Many device servers have a built in static web server for configuration of the Device Server itself but the fact that a Layer 4 protocol level can not process data values makes it impossible to display data from a application on a built in web server with SSI scripts or Java applets Gateways Gateways make communication possible between different architecture and protocols They repackage and con
3. automobile the vendor uses CAN as communication link but the vendor adds their own Layer 7 protocol on top of CAN to make this understandable for all nodes communicating inside the car Any other CAN node outside the car is not able to participate in the communication if the same Layer 7 protocol isn t implemented In the Industrial marketplace devices from several different vendors need to be interconnected and therefore there are several open Layer 7 protocols based on CAN like DeviceNet and CANopen Two DeviceNet nodes from two different vendors can communicate and exchange data because they use the same Layer 7 protocol Ethernet and the TCP IP protocol covers the Layer 1 4 of the OSI model which gives more functions and features than the CAN technology Two Ethernet nodes can be interconnected in order for them to communicate but TCP IP only provide a transport mechanism of the data and performing service tasks like establishing connections handling re sends if any of the communication bits are corrupted etc However two nodes using Ethernet and TCP IP can only talk to each other but they do not understand each other because they do not use the same language i e the Layer 7 is not defined by TCP IP pro tocol On top of TCP IP there must be applications like SNMP HTTP FTP etc to be able to exchange and process any data from the network All these IT protocols ate standardized layer 7 protocols In the Industrial area there are additiona
4. cit co Ia o e stoetscsaeavscsnocsasssaideeshealosssesseseszeseaeseeucoacooes 4 1 dug M 4 1 Netwotlk Tristallatiot z 2 5 A2 epe ehe eret erint orte eee ed i un ee ARP S 4 1 Chapter 5 Gateway Config Interface RS232 Generals succes enata tite cepta ees c ei E ded 5 1 Comtmuricaton SEE Up sser pn na e eO DEUM decide t deg e te e b T TU ia rd 5 1 Quick Touf M 5 2 Mail Mentis 3e tea s ei ri t rh th ee bebe etae i T 5 2 Change C Onur atihan riin aa An E 5 3 Configuration Upload Download esee tentent eterne teens 5 4 Chapter 6 Status and Diagnostics Status WOE AS omen Le rites etu Lebe Loi CP DES 6 1 Chapter 7 The Control Word Table of Contents Il Chapter 8 Live List Master configurations only Chapter9 Error Handling Appendix A Connectors and Cables Network Comnectors 1 15 2 ond Ade teen toro gusveid ATEA A 1 Power Supply Connectot ite ee eripe qe tede tee thee Eee rit tete tgp ads Gateway Configuration Connector Gateway Configuration Cable Schematic Null Modem sse A 1 Appendix B Technical Specification DONGE EE SE E T E E EE TAE B 1 Protective Barth and Shieldtrp ie tt tette ute eet TANER B 1 f cvi A B 1 Relative Humidity a4 nene prre orte te e p pe pere a Ae E tbe B 1 EMG Compliance tees e ete dte A tna res B 1 Prefac
5. data syntax are identified Everything at this layer is application specific This layer provides application services for file transfers e mail and other network software services Telnet and FTP are applications that exist entirely in the application level Presentation Layer This layer provides independence from differences in data represen tation e g encryption by translating from application to network format and vice versa The presentation layer works to transform data into the form that the application layer can accept This layer formats and encrypts data to be sent across a network providing freedom from compatibility problems Session Layer This layer establishes manages and terminates connections between applications i e deals with session and connection coordination Transport Layer This layer provides transparent transfer of data between end sys tems or hosts and is responsible for end to end error recovery and flow control It ensures complete data transfer Network Layer This layer provides switching and routing technologies creating log ical paths for transmitting data from node to node Routing and for warding are functions of this layer as well as addressing internetworking error handling congestion control and packet se quencing Data link Layer This layer is responsible for encoding decoding data packets into a bitstream It also provides synchronisation flow control and lo
6. erty of their respective holders Related Documentation Document Author Revision List Revision Date Author Chapter Description 1 00 2004 04 02 PeP All First release 1 01 2005 02 14 PaL 5 7 and 8 Reset bit offset bits main menu 1 02 2005 09 01 PaL 6 7 and 8 Changed default setting of Control Status and Livelist About This Manual P 2 Conventions Used in This Manual The following conventions are used throughout this manual Numbered lists provide sequential steps Bulleted lists provide information not procedural steps The term AnyBus X is used when referring to the AnyBus X Generic Gateway Hexadecimal values are written in the format NNNNh where NNNN is the hexadecimal value All measurements expressed in this document have a tolerance of 0 25mm unless otherwise stated 16 32 bit values are generally stored in Motorola big endian format unless otherwise stated Support Europe Sweden E mail support hms networks com Phone 46 0 35 17 29 20 Fax 46 0 35 17 29 09 Online www anybus com HMS America E mail us support hms networks com Phone 1 773 404 2271 Toll Free 888 8 AnyBus Fax 1 773 404 1797 Online www anybus com HMS Germany E mail ge support hms networks com Phone 49 721 96472 0 Fax 49 721 964 7210 Online www anybus com HMS Japan E mail jp support hms networks com Phone 81 45 4
7. network but they also provide intelligent analyses on the bit packages received An Ethernet Switch with store and forward technology looks on the entire data frame it receives on any of its ports It starts with verifying that no communication bits are corrupted by checking the CRC checksum If it is not OK the data frame will be discarded If CRC check is successful the switch will look at the destination address and forward the data frame to the port where this destination address is located What s a Gateway 2 3 Bridges amp Device Servers Bridges operate in the Layer 1 4 of the OSI model They establish connections re transmissions error handling etc Data is exchanged easily between bridges but still the data is just sent as a chunk of anon ymous data Layer 4 has no mechanism of processing the data itself For Ethernet it is very popular to use Device Servers to bridge between a serial network such as RS 232 up to Ethernet The Device Setver has a complete TCP IP protocol stack included and when it s connected to a serial port the data from that port is encapsulated in a TCP IP frame and can be trans ported over Ethernet On the destination side of Ethernet the serial data is just extracted out from the TCP IP frame This may sound like a Media Converter but there are complicated timing and protocol processing being performed by the Device Server If the serial device is communicating with a PC Based system the PC normally runs
8. up during installation to define the data that should be linked between the two networks To web enable data from a serial device with a legacy protocol you must have a Layer 7 gateway product to interpret the real data and link it to a built in web server Chapter 3 AnyBus X Data Exchange Basics General Before using the gateway it is important to understand how data is treated by it and how it s various settings will affect the data exchange Data Exchange Model On the AnyBus X platform each network interface exchanges data on it s network via two data ex change buffers See below The gateway simply forwards data between these buffers and the data ex change is then handled independently by each network interface Forwarding Outgoing Data Outgoing Data Buffer EN va Buffer Network Interface 1 Network Interface 2 Incoming Data We N Incoming Data Buffer Buffer Network 2 x pe o EA 2 7 zZ Up to 512 bytes of data can be forwarded between the network interfaces however due to network spe cific limitations the actual amount may be less Apart from network I O data the gateway can also exchange status information between the two net works such as a list of active slaves called the Live List only available master slave gateway configura tions or diagnost
9. 47 55 63 3 The list contains the status for up to 64 slaves and is 8 bytes long i e each bit represents a single slave see below Offset Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 0 Slave 0 Slave 1 Slave 2 Slave 3 Slave 4 Slave 5 Slave 6 Slave 7 1 Slave 8 Slave 9 Slave 10 Slave 11 Slave 12 Slave 13 Slave14 Slave 15 2 Slave 16 Slave17 Slave18 Slave 19 Slave20 Slave21 Slave22 Slave 23 3 Slave24 Slave25 Slave26 Slave27 Slave28 Slave29 Slave30 Slave 31 4 Slave32 Slave33 Slave34 Slave35 Slave36 Slave37 Slave38 Slave 39 5 Slave40 Slave41 Slave42 Slave43 Slave44 Slave45 Slave46 Slave 47 6 Slave48 Slave49 Slave50 Slave51 Slave52 Slave53 Slave54 Slave 55 7 Slave56 Slave57 Slave58 Slave59 Slave60 Slave61 Slave62 Slave 63 Bit set 1 Slave active The exact interpretation of this bit varies slightly between different networking systems consult the separate Network Interface Addendum for the master interface for further information Bit cleared 0 Slave not active The exact interpretation of this bit varies slightly between different networking systems consult the separate Network Interface Addendum for the master interface for further information The Live List can be enabled via the Gateway Config interface see 5 1 Gateway Config Interface RS232 1 The AnyBus X Pr
10. 78 5340 Fax 81 45 476 0315 Online www anybus com Chapter 1 Introduction The AnyBus X Generic Gateway is a series of network gateways used to provide seamless connection between two different types of networking systems The AnyBus X is based on proven AnyBus tech nology that interconnects via an intelligent bridging device providing a flexible and versatile solution based on proven technology The AnyBus X can function either as a Bridge or as a Gateway Bridging be tween 2 networks means that the Any Network 1 J Bus X would bridge telegrams between 1 two different networks in a seamless Al fashion When functioning as a Gate way the AnyBus X translates data be tween two different network types The AnyBus X enhances the common Network 2 J J J J l gateway concept by providing gateway versions with both master and slave functionality as well as advanced ver sions with Ethernet capabilities Furthermore the AnyBus X can be configured using any ASCII capable terminal program and a stand ard null modem cable Functional Overview Basically the AnyBus X forwards data produced on one network to another and vice versa see below AnyBus X Translation Network Interface Network 2 o band x g 3 E x v o z E m ze Internally the AnyBus X consists of two network interfaces with their own memory and processing power
11. CNNEEM kajen 4 Select Y Modem in the Protocol list Hee a CAGateway Files config cfg Browse 5 Click Send The configuration file will now be up Es loaded to the gateway 6 Type reboot lt Enter gt The gateway will now restart Once restarted the new settings will become active 1 Chapter 6 Status and Diagnostics The Status Word provides access to the status of network 1 on network 2 and vice versa and contains general diagnostic information from gateway The Status Word is by default disabled on both network interfaces but can be enabled separately for each interface via the gateway Config Interface see 5 1 Gateway Config Interface RS232 The figure below describes the origin of the status bits within the Status Word Network Interface 1 Network Interface 2 Status Word LSB Status Word MSB LSB Status Word MSB Status Word MSB L atus Word LSB I EM x pel o E v Network 2 Status Word b45 b14 b13 b12 bii b10 b9 b8 b7 b b5 b4 b3 b2 bi b0 Gateway Cycle Counter General Error Counter reserved Master Mode Init Run MSB LSB e Gateway Cycle Counter This 4 bit counter is incremented for each success
12. Control Word 1 0 Data Network 2 Control Word l O Data Parameter Data Parameter Data Chapter 4 Installation DIN Rail Installation The gateway is DIN rail mountable In order to achieve proper EMC behaviour the DIN rail must be properly connected to protective earth PE Snap On To fasten the gateway onto the DIN rail align it with the din rail connector accord ing to this figure press firmly on top and push the lower end into position Snap Off To remove the gateway press firmly on top and pull the lower end away from the din rail Power The gateway requires a regulated 24V 10 power source Power is applied via a 2 pole pluggable screw connector X E 6 I Note that this connector is polarized wrong polarity will not wotk and may damage the product Network Installation Network specific installation procedures are described in each separate Network Interface Addendum Gateway Config Interface RS232 General Chapter 5 Generally the AnyBus X requires very little configuration to get up and running However all networks are different and some settings may have to be adjusted slightly to fit a particular application This is done via the Gateway Config interface which can be accessed using any ASCII capable terminal emu lator via RS232 such as the Microsoft Windows Hyperterminal An
13. Instruction Step 1 Write Step 2 Start Step 3 Write Do you want to configuration sb in the command prompt Ymodem transfer Receive Reboot to restart the module start upload download Y N To upload or download a configuration press Y Press N to return to the main menu Follow the procedures described below to download or upload a configuration To download the configuration file from the gateway C 2x 1 Type rb lt Enter gt The gateway is now waiting for cc T Um the host terminal to download the configuration via peeso protocol Y Modem E Ymodem G 2 Select Receive File in the Transfer menu modem wih Crash Recoven 3 Select the path to be used The file will be saved as T config cfg Place received file in the following folder CAGateway Files Browse 4 Select Y Modem in the Use receiving protocol list perevnoreiesi 5 Click Receive cem The configuration file will now be downloaded to the PC e To upload a configuration file to the gateway 1 Type sb lt Enter gt The gateway is now waiting to re axi ceive a configuration file via YModem transfer cero CAGateway Files config cfg Browse 2 Select Send File in the Transfer menu Dem IK Xmodem Kermit 3 Select the path and file to be used The file must be o M M a Ymodem G named config cfg in order for the gateway to detect ar Col eid it LETI
14. T OK Cancel aix Port Settings l disper second TT Data bits 8 Parity None Stop bits fi Elow control Hardware Restore Defaults Power up the gateway and proceed with the steps described on the following pages Gateway Config Interface RS232 5 2 Quick Tour During startup several messages are displayed To enter the main menu press ESC Verifying application firmware OK Performing quick RAM check OK Mounting FLASH idi 84 o wksuset ioco ous sce ps OK gt ABSABS bin Gateway initialising Please wait Both AnyBus modules are OK Exchanging data Press ESC to enter terminal interface Main Menu The main menu holds several sub menu entries To select a menu entry press the corresponding button 1 Show system information 2 Show fieldbus system information 3 show gateway system configuration 4 show fieldbus configuration 5 Operating status information 6 Change configuration 7 Configuration upload download 8 Restart Gateway 1 This menu displays general information about the system Press ESC to return to the main menu 2 This menu displays software versions of the fieldbus and serial numbers Press ESC to return to the main menu 3 This menu displays the current system configuration Press ESC to return to the main menu This menu displays how the fieldbuses are conf
15. User Manual AnyBus X Generic Gateway HMS Industrial Networks AB Rev 1 02 a Germany 49 721 96472 0 Japan 81 45 478 5340 Sweden 46 35 17 2920 U S A 1 773 404 3486 sales ge hms networks com sales jp hms networks com sales hms networks com sales us hms networks com Table of Contents Table of Contents Preface About This Manual How To Use This Manual erre ep hte a P EM ER DP or P D OD eps P 1 Important User Information 2 eie at ee cossebed sdsedostevstesedsedadedsstesssaateabidentsh P 1 Related Docutnentati n xia tides a edebat ore D Mp diat de eiae peto steed P 1 Revision Dist uie tinta e Ie PR TRES E AEE ETE Vena HO Wee ee UI EE HIR P 1 Conventions Used in This Manual Supportongss AAS EE EE EE EA EEAS E EET AREE EEEE Chapter 1 Introduction Eurnctional OVetVie Winni toe rp hb e tn ORE 1 1 Iursuvlbdls 1 2 Chapter 2 What s a Gateway Media Converters Repeaters amp Switches sse eee tente ntes 2 2 Bridges Device Servers ue tee itae tratte ake ta ege tiere pene ete ates 2 3 Gate WAYS aueh aen E S tpe tipi lied sevsbersevts ta dis cse AE ones ri do Ep ME 2 3 S mtmabyd s UL ununi auta tien salse detenti taii tr HE THES 2 4 Chapter 3 AnyBus X Data Exchange Basics General ei dM Metus US Ue ede 3 1 Data Mappings S 3 2 Chapter 4 Installation DIN Rail Installation 5 5 e oe ee
16. and an intelligent translation device between the two This design allows almost any combination of network systems in both master and slave configurations Note This document does not cover any netwotk specific features this information is instead available as separate Network Interface Addendums Introduction 1 2 External View The flexible design of the AnyBus X platform allows the net work interfaces to be either top or bottom mounted Note that this affects the orientation of the onboard switches and connec tots consult each separate Network Interface Addendum for further information Top Mounted Network Interface Gateway Status LED The front of the gateway features various netwotk specific indi cation LED s See separate Network Interface addendum and two Gateway Status LED s one for each interface The Gateway Status LED The Gateway Status LED s provides general status information for each network interface Gateway Status LED Colour Indication Green Communication running Red Communication fault Red flashing _ Network interface fault Bottom Mounted Network Interface Off No power Top View Power Connector The top side of the gateway holds the power connector For more information regarding pinout and power requirements etc see A 1 Power Supply Connector and B 1 Power Thi
17. e About This Manual How To Use This Manual This document is intended to provide a good understanding of the functionality shared by the various versions of the AnyBus X Genetic Gateway It does however not cover any of the network specific fea tures offered by the various versions this information is instead available as separate documents Net wotk Interface Addendums The reader of this document is expected to be familiar with the fieldbus system and communication systems in general For more information documentation etc please visit the HMS website www anybus com Important User Information The data and illustrations found in this document are not binding We HMS Industrial Networks AB reserve the right to modify our products in line with our policy of continuous product development The information in this document is subject to change without notice and should not be considered as a com mitment by HMS Industrial Networks AB HMS Industrial Networks AB assumes no responsibility for any errors that may appear in this document There are many applications of this product Those responsible for the use of this device must ensure that all the necessary steps have been taken to verify that the application meets all performance and safe ty requirements including any applicable laws regulations codes and standards AnyBus is a registered trademark of HMS Industrial Networks AB All other trademarks are the prop
18. easy to use menu based user interface provides access to all gateway related parameters The communication settings on this interface are fixed to the values specified below Baudrate 57600 Stop bits 1 Parity None Flow control None Communication Set up To use the Gateway Config interface connect a null modem ca ble See A 1 Gateway Configuration Cable Schematic Null Mo dem between the Gateway Config connector and a free COM port on a PC and follow the steps below Note that the example below requires the Microsoft Windows Hyperterminal however any ASCII capable terminal software can be used The procedure may in that case be slightly different 1 Start Hyperterminal 2 Hyperterminal will prompt for a name to use for the new connection Name the connection Gateway Config con nection and click OK 3 Select the interface to use for the connection Select the COM port that is connected to the gateway In this case COM1 and click OR 4 Hyperterminal will now prompt for the communi cation properties for the interface Select the cor rect settings See above and click OR 5 Done AE WS sco Enter a name and choose an icon for the connection Name Gateway Config connection osseussu connectTo 2 x B Gateway Config connection Enter details for the phone number that you wantto dial Country region Fa Area code Phone number nec T
19. ers and in master slave configura tion also a Live List which if enabled will affect the data mapping of the network interfaces The way data is represented on the network is described in detail in each separate Network Interface Addendum Slave lt gt Slave Configuration Control and Status Word Enabled The figure below illustrates how data is mapped in a slave to slave configuration Note the Control and Status words which provides control and status information on both network interfaces Slave Interface 1 Slave Interface 2 l O Data Status Word l O Data Parameter Data Parameter Data x pe o EA zZ Control Word 1 0 Data Network 2 Control Word W O Data Parameter Data Parameter Data Master lt gt Slave Configuration Live List Control and Status Word Enabled The figure below illustrates how the data is mapped in a master to slave configuration The mapping is similar to that of the slave to slave version above but additionally also features a Live List which in dicates the status of the slaves attached to the onboard master interface Status Word Master Interface Slave Interface retis 1 0 Data W O Data Parameter Data Parameter Data 2a pel o E v a
20. ful gateway cycle i e each time data has been transferred between Network Interface 1 and Network Interface 2 General Error Counter This 4 bit counter is incremented each time an error exception has occurred e g fieldbus off lines etc Master Mode These bits indicates the operation mode of the onboard fieldbus master on the onboard fieldbus slave interface these bits are not available on the master scanner side The interpretation of these bits is slightly different depending on the type of master scanner For further information consult the Network Interface addendum for the on board master scanner nit This bit indicates that the other network interface is initialised 1 Other network interface initialised properly 0 Other network interface is not initialised Run This bit indicates that the other network interface is on line running 1 Other network interface is on line running 0 Other network interface is not on line running Only available on fieldbus master scanner configurations Chapter 7 The Control Word Itis possible to issue certain control commands to the gateway directly from the network by writing to the Control Word The Control Word is by default disabled on both network interfaces but can be en abled separately for each interface via the gateway Config Interface see 5 1 Gateway Config Interface RS232 The figure below describes the origin of the bits within the Control Word
21. ic information via a Status register Furthermore a Control register provides access to control parameters from the network Data Sizes and Data Types The amount of data that should be exchanged is configured separately for each network interface via the Gateway Config interface This means that even though up to 512 bytes of data can be forwarded to an interface the amount of data that will actually be exchanged on that network is determined by settings in the network interface itself This may not seem logical at first but allows data exchange regardless of network specific needs and limitations As most fieldbus systems makes a distinction between fast cyclical data and less time critical acyclic data the gateway uses two different values to determine the total data size to be exchanged on an interface Note that the terminology used for these data types and their definition varies slightly between different networking systems In this document the data types are referred to as I O Data and Parameter Data I O Data Size I O Data is often referred to as fast or cyclical I O data e Parameter Data Size Parameter Data is often referred to as slow or acyclical I O data Note When determining the data sizes please make sure to include sufficient space for the Live List and the Control Status registers if enabled AnyBus X Data Exchange Basics 3 2 Data Mapping As mentioned before the gateway features Control and Status regist
22. igured in regards to I O sizes Parameter data size Control Status word offline options live list and configuration mode Press ESC to return to the main menu 5 This menu displays the current operating status Press ESC to return to the main menu 6 This menu is used to change the current configuration For more information see 5 3 Change Configuration 7 This menu is used when uploading or downloading a predefined configuration For more information see 5 4 Configuration Upload Download 8 This menu is used to restart the gateway The gateway will prompt for confirmation before restarting Gateway Config Interface RS232 5 3 Gateway system configuration Press ESC to continue Enabled The module will reboot when the connection to Ethernet or Com Transport Provider has been terminated Press ESC to return to the main menu Disabled The module will not reboot when the connection to Ethernet or Com Transport Provider has been termi nated Press ESC to return to the main menu Gateway Config Interface RS232 5 4 Change Configuration This menu is used to review or alter the current configuration Before the menu is displayed the follow ing message will appear Both networks will go offline Is this OK Y N To continue press Y Each setting will now be displayed in sequence To change a value simply type the new value or use the and key
23. l layer 7 protocols that handle real time data exchange device profiles etc Two examples are EtherNet IP IP Industrial Protocol and IDA Interface for Distributed Au tomation that both are used on top of the TCP IP protocol OK with this information in the back of our minds let s take a look into how to convert from one net work to another network Media Converters Repeaters amp Switches Media converters normally operate in the Layer 1 and Layer 2 area of the OSI model What they do is that they take the electrical signals from one physical media and converts them to another physical me dia One example is a RS 232 lt gt RS 422 converter that re formats the electrical signals between these two networks Another example is an Ethernet 100Mbit CAT5 Cable lt gt 100Mbit Fibre converter Media converters are very useful in Industrial applications when going from physical media to another but they just re format the signals they do not provide any additional value to the application As signals travel along a network cable they degrade and become distorted in a process that is called attenuation If a cable is long enough the attenuation will finally make a signal unrecognizable A Re peater enables signals to travel further It works at the OSI s Physical layer to regenerate the network signal and retransmit it on other network segments Switches can be viewed as intelligent repeaters They amplify the signals of the Physical
24. mA at 24V Protective Earth and Shielding The product must be connected to protective earth PE via the DIN rail connector in order to achieve proper EMC behaviour Temperature Operating 0 to 65 degrees Celsius Test performed according to IEC 68 2 1 and IEC 68 2 2 Non Operating 15 to 85 degrees Celsius Test performed according to IEC 68 2 1 and IEC 68 2 2 Relative Humidity The product is designed for a relative humidity of 5 to 95 non condensing Test performed according to IEC 68 2 30 EMC Compliance The on board network interface modules are tested according to EMC directive 89 336 EEC Emission According to EN 61000 6 4 2001 Tested per 55011 1998 55022 1994 class A radiated Immunity According to EN 61000 6 2 2001 Tested per EN 61000 4 2 1995 Electrostatic Discharge ESD EN 61000 4 3 1996 Radiated radio frequency electromagnetic field EN 61000 4 4 1995 Fast transients burst EN 61000 4 5 1995 Surge EN 61000 4 6 1996 HF Injection Technical Specification B 2
25. ofibus DPV master interface supports more than 64 slaves however only slaves 1 64 will be visible in the Live List Chapter 9 Error Handling When a network goes off line itis often desirable to have certain control over what happens on the other network The gateway can either freeze keep the current value or clear set to zero the data from the network that has gone off line Which action to perform can be selected via the Gateway Config interface see 5 1 Gateway Config Interface RS232 Connectors and Cables Network Connectors Appendix A Network connectors and their pinouts are described in each separate Network Interface addendum Power Supply Connector Pin Signal Ground 24V DC _ _ a 1 Gateway Configuration Connector Pin Signal Housing Shield 1 2 Receive Data RS232 3 Transmit Data RS232 4 5 Signal ground 6 7 8 9 Gateway Configuration Cable Schematic Null Modem 9 pin D sub female 9 pin D sub female Housing Cable Shield Housing 1 x x 1 Receive Data 2 2 Receive Data Transmit Data 3 A 3 Transmit Data 4 x x 4 Signal Ground 5 5 Signal Ground 6 x x 6 7 x x 7 8 x x 8 9 x x 9 Appendix B Technical Specification Power The gateway requires a regulated 24V 10 DC power source The maximum power consumption is 300
26. s side also features network specific connectors and switch es which are described in detail in each separate Network Inter face addendum T Power Connector Bottom View Gateway Config Connector The bottom side of the gateway features a configuration port a k a the Gateway Config connector For more information about this interface see 5 1 Gateway Config Interface RS232 Gateway Config Connector RS232 For pinout and cable schematic see A 1 Gateway Configura tion Connector and A 1 Gateway Configuration Cable Sche matic Null Modem This side also features network specific connectors and switch 9 es which are described in detail in each separate Network Inter face addendum What s a Gateway Chapter 2 Gateways Linking Devices Switches Device Servers Media Converters Confusing Well you are not alone Communication between two different networks is challenging First let s start with taking a look on the basic model for all data communication the OSI model The OSI Open System Interconnection model defines a layered framework for implementing commu nication protocols The layers of the OSI model are 7 Application Layer This layer supports application and end user processes Communi cation partners are identified quality of service is identified user au thentication and privacy are considered and any constraints on
27. s to select the desired setting The settings are described separately later in this document Configuration Modbus RTU Slave Upper Input I O data size bytes 20 Output I O data size bytes 20 Input Parameter data size bytes 4 Output Parameter data size bytes 4 Offline option Freeze Control Status word Enabled Configuration Ethernet IP WEB Slave Lower Input I O data size bytes 20 Output I O data size bytes 20 Input Parameter data size bytes 4 Output Parameter data size bytes 4 Offline option Freeze Control Status word Enabled Gateway configuration Reboot after disconnection Enabled When done the gateway will ask if the changes should be stored Store Configuration Y N Yes To store the changes press Y The gateway will now ask if the gateway should be restarted Configuration stored Do you want to restart gateway to execute all changes Y N Yes To restart the gateway press Y Once the gateway has restarted the new settings will become active Gateway Config Interface RS232 5 5 Configuration Upload Download Sometimes it is useful to be able to download a predefined configuration into the gateway Note that this requires a terminal program with Y modem capabilities Download Instruction Step 1 Write rb in the command prompt Step 2 Start Ymodem transfer Send Step 3 Write Reboot to restart the module Upload
28. vert data going from one network to another network so that it can understand the other s ap plication data A gateway repackages information to match the requirements of the destination system Gateways can change the format of a message so that it will conform to the application program at the receiving end of the transfer A gateway links two systems that might not use the same Communication protocols and Data formatting structures Gateways incorporate the entire suite of the OSI model from Layer 1 up to Layer 7 This allows true data translation and processing on the two different networks and thus a true liking of data between the networks can be achieved Using a Gateway to bridge between Ethernet and other protocols such as DeviceNet Profibus or simple serial protocols also allows the Gateway to serve up data from that net work directly to a built in web server enabling true web based control and monitoring What s a Gateway 2 4 Summary Transporting data between two different networks are not trivial and it is important to analyse the re quirement of the application Media converters work well when overcoming electrical difference in two network technologies Normally no configuration is necessaty Device Servers are attractive when using Ethernet based networks and with PC based control Gateways are able to solve all data linking between two networks The drawback is that Gateways are quite complex devices and require set
29. w level error handling Physical Layer This layer carries the actual bit stream through the network at the electrical and mechanical level It provides the hardware means of sending and receiving data defines physical aspects such as cables connectots etc The OSI model T Application Layer 6 Presentation Layer 5 Session Layer 4 Transport Layer 3 Application Layer 2 Data Link Layer 1 Physical Layer What s a Gateway 2 2 The most basic communication is just using sub sets of the OSI model Layer 1 represent the lowest level i e the physical communication line and its electrical signals Layer 7 is the user level where the data model makes it possible for two devices to exchange and understand exchange data A common example is that even if we can hear someone speaking we must understand his language to be able to understand the meaning of the data Devices use a common Layer 7 which speaks the same language and can freely exchange data that both devices understand A basic RS 232 interface just defines Layer 1 making sure that two RS 232 devices can be electrically interconnected without electrical conflicts To be able to communicate and interpret data between two devices additional protocol software needs to be added in both devices defining the communication rules and data formats The popular CAN protocol used in most automotive application nowadays just communicates on Lay et 2 Inside an
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