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Summary of Contents for AB7612

Page 1: ...4126 300 04 Halmstad Sweden Visiting address Stationsgatan 37 Halmstad Sweden Connecting DevicesTM E mail info hms networks com Web www anybus com Anybus X gateway J1939 to Modbus Interface User Manual Part No AB7612 For Firmware Revision 2 06 01 and Later Manual Revision 1 20 Doc Id HMSI 168 25 ...

Page 2: ...Operation Requirements 2 1 Power and Network Connector 2 2 Configuration Port Connector 2 4 Configuration 3 1 Anybus Configuration Tool BWConfig 3 1 Modbus Network Configuration 3 6 J1939 Network Configuration 3 7 J1939 I O Configuration 3 10 Modbus Interface 4 1 Network Communication 4 1 Supported Modbus Functions 4 2 Diagnostic Subfunctions 4 3 Modbus Addressing 4 7 Diagnostic Registers 4 9 Inte...

Page 3: ... Bus Off Reset Option 6 13 Offline Detection 6 14 J1939 Baud Rate 6 17 Status and Diagnostics 7 1 Anybus X gateway LEDs 7 1 Status Codes 7 3 Specifications 8 1 Environmental Specifications 8 1 EMC Directive Compliance 8 1 Electrical Specifications 8 1 Mechanical Specifications 8 2 I O Data Sizes 8 3 Modbus Specifications 8 3 J1939 Specifications 8 3 Connectors 9 1 Power and Network 15 Pin D Submin...

Page 4: ...ety requirements including any applicable laws regulations codes and standards The illustrations and samples in this guide are intended solely for the purpose of example HMS Industrial Networks does not assume responsibility or liability for actual use based upon the examples shown in this publication FAIL SAFE OR CRITICAL OPERATIONS This product is not designed intended authorized or warranted to...

Page 5: ...mentation Modbus is a trademark of Modbus org Microsoft MS DOS and Windows are trademarks of Microsoft Corporation Document Name Author Web Page Modbus Protocol Specification Modbus IDA www modbus org J1939 Recommended Practice SAE www sae org Table 1 1 Related Documentation ...

Page 6: ...ty vehicle network using a Modbus RTU master device Data from J1939 messages are mapped to I O table locations making them addressable using standard Modbus read and write commands Examples of JMI applications An interface used on a diesel generator package to access engine parame ters from a Programmable Logic Controller PLC An on vehicle gateway used to interface the J1939 vehicle network to an ...

Page 7: ...a to be read through the other net work interface The JMI appears as a single device on either network using standard protocol mechanisms No special or extended protocol features are required of the devices on either network to read and write the data flowing through the PassageWay all cross network activity is transparent to the devices on either network Figure 1 1 JMI PassageWay Operation Modbus...

Page 8: ... broadcast BAM are supported Configurable CAN bus off reset option will reset the network interface and attempt to return to online when a CAN bus off condition is detected Configurable diagnostic tables provide monitoring of J1939 diagnostic messages for active and previously active diagnostics DM1 and DM2 Modbus Features Modbus RTU slave RS 485 half duplex 2 wire serial interface Configurable ba...

Page 9: ...U network connection Modbus RTU master device 24 VDC power connection PC to execute Anybus X gateway Configuration Tool BWConfig RS 232 null modem cable to connect PC running BWConfig to the JMI Optional Hardware DIN rail to mount the JMI Required Software Anybus Configuration Tool software BWConfig to configure the JMI For support of all features described in this manual the revision of BWConfig ...

Page 10: ...d for connection to a PC running the Anybus Configuration Tool This is a standard RS 232 DTE connection and will require a null modem cable pins 2 and 3 swapped to connect the module to a PC serial port or USB serial adapter See Installation Page 2 1 for details on using this connector The front of the module has a set of 3 LEDs that are used for status indication These LEDs provide visual status ...

Page 11: ...Warning Explosion Hazard Substitution of components may impair suitabil ity for Class 1 Division 2 Warning Explosion Hazard When in hazardous locations turn off power before replacing or wiring modules Warning Explosion Hazard Do not disconnect equipment unless power has been switched off or the area is known to be nonhazardous Terminal tightening torque must be between 5 7 lbs in 0 5 0 8 Nm For u...

Page 12: ...to be made are illustrated in Figure 2 1 Power Connection The X gateway requires 24 volts DC power Power is applied to pins 9 and 10 of the 15 pin D Sub connector The module will start immediately when power is applied There is no On Off switch on the module Figure 2 1 Power and Network Connector 9 24 VDC Common 10 24 VDC 11 Modbus RS 485 A 12 Modbus RS 485 B J1939 CAN High 15 J1939 CAN Low 14 J19...

Page 13: ...e signal lines should not be swapped on any device connection Note Some RS 485 equipment uses and descriptors to label the signal lines The corresponds to A The corresponds to B J1939 Network Connection The J1939 CAN lines are connected to pins 14 and 15 with the CAN shield con nected to pin 13 of the 15 pin D Sub connector CAN Low is connected to pin 14 CAN High to pin 15 The CAN High and Low sig...

Page 14: ...al port use a 25 pin to 25 pin null modem pins 2 and 3 swapped cable to connect the PC to the X gateway If the PC has a 9 pin serial port or USB serial adapter use a 9 pin to 25 pin straight through cable Note The Anybus X gateway does not make use of the modem control signals specified for a DTE connector Connecting the module through devices such as isolation modules which assume control of thes...

Page 15: ...onfiguration Tool BWConfig The Anybus Configuration Tool allows you to configure the parameters associ ated with the Modbus and J1939 network interfaces as well as to set up the con tents and layout of the I O table BWConfig is a Microsoft Windows application that communicates with an Any bus X gateway over a standard RS 232 serial link using the PC serial port or USB serial adapter BWConfig is co...

Page 16: ...ion automatically Starting the Tool Launch BWConfig from the Anybus Configuration folder in the Windows Start Menu When BWConfig is started it will attempt to locate a X gateway module on one of the PC serial ports If a module is found the status area of the tool will be updated to show the module type and status of the module that was located If a module is not connected to the PC or is powered o...

Page 17: ...Configuration 3 3 2012 HMS Industrial Networks AB Doc Id HMSI 168 25 BWConfig User Interface The Anybus Configuration Tool s user interface is shown in Figure 3 1 Figure 3 1 BWConfig User Interface ...

Page 18: ...figuration of the content and layout of the I O tables Open File Open a previously saved X gateway configu ration Save File Save the current X gateway configuration to a file Refresh Device Status Refresh the module identity and status infor mation This will update the current status information shown by the tool This can also be used to start the detection process if a mod ule has not been detect...

Page 19: ...arameters associated with the selected input or output data point in the J1939 I O configuration Remove I O Point Delete the selected input or output data point from the J1939 I O configuration Flash Update Perform a field upgrade of the X gateway module s firmware Note Care should be taken when upgrading firmware an incomplete update could cause irreparable harm to the module ...

Page 20: ... must use the same baud parity stop bits configuration 4800 9600 19200 Parity The serial communication parity configura tion All devices on the network must use the same baud parity stop bits configuration None Even Odd Stop Bits The number of stop bits used in the serial communication All devices on the network must use the same baud parity stop bits con figuration 1 or 2 Watchdog Time out The ti...

Page 21: ...interface Parameter Description Allowable Range Device NAME The J1939 NAME to be used by the module in address claim messages Each J1939 module should have a unique NAME See the section Setting the J1939 NAME below for details on how the NAME is config ured See the J1939 81 specification Network Address List The list of addresses that the module is able to use on the J1939 network The module will ...

Page 22: ...cilitate reading the J1939 data on Modbus Note Module firmware revisions earlier than 1 05 01 automatically swapped I O bytes this option was not configurable but set in the module Set this option to be com patible with earlier configurations Enabled or Disabled Offline Detection Time Enabling the Offline Detection will allow the module to detect when it is not connected to the J1939 network when ...

Page 23: ...he meaning and format of the data contained in the NAME value is defined in the J1939 81 specification The NAME value can be set 2 ways using the J1939 Device NAME dialog directly or by component To set the NAME value directly simply type the desired value of each of the 8 bytes in hexadecimal using the top fields of the dia log Each component of the NAME value is broken out and displayed in the l...

Page 24: ...associated with data from mes sages that are received on the J1939 network The Output table holds data that is written by the Modbus master and will be transmitted on the J1939 network Output data points are associated with data of messages that will be transmitted on the J1939 network I O Configuration Limits The I O configuration is limited as follows 2048 bytes maximum in the Input table 2048 b...

Page 25: ...t data points have the same parameters with the exception of Priority which is only available for Output data points shown below The parameters associated with I O data points are described in Table 3 3 Note The J1939 I O configuration is initialized at module bootup and whenever a new configuration is downloaded to the module from BWConfig Any changes made to the I O configuration will take place...

Page 26: ...its 0 2047 bytes Data Length The amount of the data to be transferred between the I O table and the J1939 message data The length is in bits It is displayed as both bits and the corresponding byte and bit shown as byte bit When entering this value in the editor A sin gle value will be interpreted as bits 2 values separated by a comma or a period will be interpreted as a byte bit combination i e 16...

Page 27: ...ut data point the data point is expected to be updated a message received with matching PGN and address within the configured Update Rate If no update is received within the configured time the mod ule will request the data point s PGN by trans mitting a Request PGN to the Target Address If the Update Rate is set to 0 the PGN will never be requested If the Update Rate is non zero for an input poin...

Page 28: ...nd bit shown as byte bit When entering this value in the editor A sin gle value will be interpreted as bits 2 values separated by a comma or a period will be interpreted as a byte bit combination i e 16 and 2 0 are equivalent entries 0 14279 bits 0 1784 bytes Priority The message priority to be used when trans mitting the message on the J1939 network Note that this parameter is only available on O...

Page 29: ...n J1939 The Active Diagnostics DM1 and Previously Active Diagnostics DM2 can be monitored by the X gateway Configuring diagnostic table monitor ing is done through the input data points in much the same manner as data PGN configuration Figure 3 4 shows the data point editor dialog when a diagnostic type is selected Figure 3 4 J1939 Data Point Editing Dialog for Diagnostics ...

Page 30: ...iagnostic table Active DTC Previously Active DTC Table Offset See Table 3 3 Table Size The number of diagnostic entries this table can hold This will be the maximum amount of diagnostics that can be placed into the table If the J1939 diagnostic message from the device contains more diagnostics than fit in the table only those that fit will be copied and the high bit in the table header will be set...

Page 31: ...ollowing serial communication parameters Baud Rates 4800 9600 or 19200 Parity None Even or Odd Stop Bits 1 or 2 Modbus Frame Delimiting The X gateway s Modbus interface utilizes quiet bus time to delimit Modbus frames In accordance to the Modbus RTU specification a quiet time of at least 3 5 character times indicates the end of a frame Note This has been know to cause some issues with some Modbus ...

Page 32: ...nput table 5 Force Single Coil Set the state of a single bit in the Output table 6 Preset Single Register Set the value of a single word in the Output table 7 Read Exception Status Read the exception status register See Excep tion Status Register on page 4 3 8 Diagnostics Diagnostic functions See Diagnostic Sub functions on page 4 3 15 Force Multiple Coils Set the state of 1 or more bits in the Ou...

Page 33: ...dbus Diagnostic Register on page 4 5 for details on this register 10 Clear diagnostic registers and counters and reset module faults 11 Read Modbus bus message counter This is the number of messages that the module has detected on the Modbus network since bootup or the last counter reset 12 Read Modbus communication error counter This is the number of CRC errors that have occurred in Mod bus messa...

Page 34: ...ails on this value 32 Read J1939 fault register See J1939 Fault Register on page 4 6 for details on this value 33 Read the J1939 CAN error counter This is the number of times the CAN controller error counter has exceeded the warning limit since bootup or the last counter reset 34 Read the J1939 CAN bus off counter This is the number of times the CAN controller has reported that it is in the bus of...

Page 35: ...ith the Modbus master is active 2 The JMI is in Run mode The bit cleared indicates Idle mode 3 A serial communication receive overrun error has been detected 4 A serial communication parity error has been detected 5 A serial communication framing error has been detected 6 A CRC error on a Modbus message has been detected 7 15 Not used Table 4 4 Modbus Diagnostic Register Bit Definitions Value Desc...

Page 36: ...one time since bootup or the last fault reset 2 The CAN controller has reported a bus off condition at least one time since bootup or the last fault reset 3 A CAN receive overrun condition was detected at least one time since bootup or the last fault reset 4 A J1939 transport protocol error has occurred at least one time since bootup or the last fault reset 5 A receive message queue has overflowed...

Page 37: ...the areas of the I O tables that are configured with J1939 I O data points are addressable If a Modbus request is made to an address outside of the configured I O table space an exception response will be returned to the Modbus master Register Functions Modbus functions that use Word addressing address the I O tables using 16 bit words The first byte of the table is addressed as 1 word address 2 a...

Page 38: ...dbus functions that use Bit addressing will address the I O tables by bits Bits 1 8 address the first byte of the table bits 9 16 the second byte and so on Input Input Table Offset byte bit 10001 0 0 10002 0 1 19999 1249 7 Coil Output Table Offset byte bit 00001 0 0 00002 0 1 09999 1249 7 ...

Page 39: ...Bytes option does not have any effect on the diagnostic and status registers All diagnostic and status registers are in little endian format The following register addresses are defined to retrieve diagnostic information from the JMI They can be read using Modbus function 4 See Diagnostic Sub functions on page 4 3 for an explanation of each diagnostic value Register Description 32001 Modbus diagno...

Page 40: ...alue that was placed there by the last write to the location by either network interface When a Modbus request to write data to the Output table is received the module will copy the data to the location in the Output table specified by the requested address This data is available to be read by either network interface as soon as it has been written Data Endian ness Modbus is a big endian network p...

Page 41: ... The data required by the system controller is contained in the PGN 4608 message as 2 12 bit values The values are packed into the first 3 bytes of the message as shown in Figure 5 2 below The data from the system controller is to be produced using PGN 256 The data is a 16 bit value and will be placed into the first 2 bytes of the message data Figure 5 1 Example Application Network Diagram Bit Byt...

Page 42: ...f the Modbus net work The system controller is running the network at 19200 baud with no parity and 1 stop bit The Modbus network configuration dialog from BWConfig is shown in Figure 5 3 Refer to Configuration on page 3 1 for more details on BWConfig The JMI s Modbus network address must be set to an unused address on the Mod bus network The master connection time out has been set to 5 seconds Fi...

Page 43: ...e J1939 device NAME has been set to an arbitrary value for the purpose of this example The NAME should be set according to the vendor and application where the module is being used based on the J1939 specification The network address list is set to a single address of 128 The Swap I O Bytes option has been enabled so that the data will be in the right byte orientation when accessing it via Modbus ...

Page 44: ...lues into Modbus registers requires that values be placed on even byte boundaries in the Input table 0 2 4 The resulting J1939 input configuration from BWConfig is shown below 2 data points have been defined 1 for each value in the message The first data point copies the first value 12 bits starting at the beginning of the message into the first word of the Input table The second data point copies...

Page 45: ...ble starts at Input Regis ter 30051 and has 10 entries in it The update rate is set to 1 second If no diagnostic messages are received within a second a request will be sent to the target device at address 10 to retrieve the diagnostic information The resulting diagnostic table will be at the following Modbus addresses See J1939 Diagnostic Messages on page 6 9 for details on the content of the Inp...

Page 46: ...esulting configuration is quite simple It is shown in Figure 5 7 The single data point specifies that 2 bytes of data from the first word of the Out put table is going to be copied into the first 2 bytes of the message The message will be transmitted with a PGN of 256 every 100ms The message will be broad cast Target Address 255 so that it can be seen by everyone on the network The Modbus Holding ...

Page 47: ...scope of this section is to explain how the configuration of the address list affects address man agement Single Configured Address If a single address is configured in the address list the module will attempt to claim that address If the configured address is successfully claimed the module will join the J1939 network using that address If the address cannot be claimed the module remains offline ...

Page 48: ...ress Claimed PGN 0x00EE00 sent both destination specific and broadcast The response is dependent on the current address management state and is discussed below If the module has successfully claimed an address and is online the response will be an Address Claimed message with the current address If the module is offline because it has lost its address to a higher priority claim and cannot successf...

Page 49: ...and Target Address Data is copied from the Output table to the message buffer based on the sizes and offsets of all output data points configured with the PGN and Target Address All bits in the message buffer that are not set from the Output table ranges in the buffer that are not referenced by output data points are set to 1 The message length is set according to the size of the data point with t...

Page 50: ...a points associated with the message will be used If the Update Time is configured as 0 no automatic transmission will occur for the message The only way that a message configured in this way will be transmitted is if a request is received for the associated PGN Automatic transmission for a message will occur Update Time milliseconds after the last transmission of the message regardless of whether...

Page 51: ...ules for destination addressing follow If the message PGN is a PDU2 type all PDU2 messages are broadcast by definition If the transmission is automatic and the Target Address set to 255 the message will be broadcast If the transmission is automatic and the Target Address is not 255 the message will be destination specific to the Target Address If the transmission is due to a request and the reques...

Page 52: ...d for an input data point will be parsed according to the configured data points Input data points are combined according to PGN and Target Address All input data points with matching PGN and Target Address are combined to define the handling for a given message If the Target Address is configured as 255 all incoming messages with a matching PGN will be parsed using the data point regardless of so...

Page 53: ... a timeout when the associated message is not received within the configured update rate The timeout indication is all bits in input table data for the input data point set to 1 This will effect all input data points associated with the PGN Target Address The result appears is as if a message was received which contained 0xFF for all data bytes in the message Note The timeout indication all bits s...

Page 54: ...estination specific a connec tion will be opened with the destination node and the message sent using RTS CTS Request To Send Clear To Send mechanisms For a complete discussion of BAM and RTS CTS refer to the J1939 21 specification Reception of Large Messages The JMI will receive large messages that are broadcast using BAM or sent to the module using RTS CTS Once a complete message is received and...

Page 55: ...he diagnostic tables are handled See J1939 Diagnostic Tables on page 3 15 for configuration details Diagnostic Table Format The active and previously active diagnostic tables have the same format The for mat consists of a table header followed by a list of table entries Table Header The table header is a 16 bit word and provides an indication of the number of diagnostic entries that are currently ...

Page 56: ...ECU s that follow the early specification will set the Conversion Method flag to 1 however there are 3 ways that the SPN may be encoded in this case The X gateway module as of v2 03 01 provides the value of the Conversion Method in the diagnostic table entries If the Conversion Method is set to 1 the user should refer to the ECU vendor to determine how the SPN is encoded The tables below illustrat...

Page 57: ...order Word Byte Bits Description 0 0 0 2 J1939 SPN bits 0 2 3 7 J1939 FMI 1 0 6 Occurrence count 7 SPN Conversion Method set to 1 1 2 0 7 J1939 SPN bits 11 18 3 0 7 J1939 SPN bits 3 10 Table 6 3 Diagnostic Table Entry Content for SPN Conversion Method 1 Version 1 Word Byte Bits Description 0 0 0 2 J1939 SPN bits 0 2 3 7 J1939 FMI 1 0 6 Occurrence count 7 SPN Conversion Method set to 0 1 2 0 7 J193...

Page 58: ...nificant bits with the FMI and the lower 16 bits in Little Endian order Word Byte Bits Description 0 0 0 2 J1939 SPN bits 16 18 3 7 J1939 FMI 1 0 6 Occurrence count 7 SPN Conversion Method set to 0 1 2 0 7 J1939 SPN bits 0 7 3 0 7 J1939 SPN bits 8 15 Table 6 5 Diagnostic Table Entry Content for SPN Conversion Method 1 Version 3 ...

Page 59: ...k online is to power cycle the module Option Enabled If the bus off reset option is enabled the JMI will re initialize the CAN controller after a bus off condition is detected Once the controller is reinitialized the mod ule will attempt to go online and resume network activity on the J1939 network WARNING It is suggested that the bus off reset option be disabled for most applications Severe netwo...

Page 60: ...le is not connected to the network or if it is the only node on the network lonely Important At least one other node besides the X gateway module must be present on the J1939 network in order for the X gateway to go online Offline Detection Message and Timer Since the X gateway uses message transmission to determine whether it is online if there are no data points configured in the Output Table th...

Page 61: ...etection mechanism is always active regardless of whether the X gateway is in Run or Idle mode The module will transmit Offline Detection Messages when it is in Idle mode This ensures that the online status being reported is always correct Important If periodic transmission of PGN 61184 could cause adverse affects in the network application make sure to disable the Offline Detection in the configu...

Page 62: ...e condition will not be detected Offline Detection with Offline Detection Message Enabled When the Offline Detection Message feature in the configuration is enabled offline detection will be performed on the messages transmitted by the output data points as well as the Offline Detection Message As described above an offline condition will be detected whenever an output message is transmitted If th...

Page 63: ...baud rate must be configured through the BWConfig Baud Rate option in the J1939 Configuration pane Important The standard baud rate for J1939 is 250K baud Do not set the baud rate to 500K baud unless you are certain that all devices on the network are communicating at 500K baud Important Configuring the module with the incorrect baud rate may cause other devices on the network to experience bus of...

Page 64: ...is flashing red and green for an extended period of time count the number of red and green flashes and call technical support Figure 7 1 Anybus X gateway LEDs State Summary Description Off No Power No power to the module Flashing Green Initializing Module is initializing Solid Green Normal Module is initialized and operational Solid Orange Hardware Initialization or Flash Update The LED will be in...

Page 65: ...line and active on the J1939 network but faults have been detected Check the J1939 status codes to determine the cause of the fault Solid Red Offline The module is not participating in the J1939 network Flashing Red Offline with Faults The module is not participating in the J1939 network and faults have been detected Check the J1939 status codes to determine the cause of the fault Table 7 2 J1939 ...

Page 66: ... format to make them easier to decipher Modbus General Status Modbus Error Status Value Description Initializing The Modbus network interface is initializing Offline The Modbus interface is initialized and waiting for a master request Online The Modbus interface is processing master requests Table 7 4 Modbus General Status Values Bit Description 0 Not Used 1 Not Used 2 Not Used 3 A serial communic...

Page 67: ...work activity 1 The CAN error counter has exceeded its warning limits at least one time since bootup or the last fault reset 2 The CAN controller has reported a bus off condition at least one time since bootup or the last fault reset 3 A CAN receive overrun condition was detected at least one time since bootup or the last fault reset 4 A J1939 transport protocol error has occurred at least one tim...

Page 68: ... Council Directive 89 336 EC Electromagnetic Compatibility EMC by applying the following standards in whole or in part documented in a technical construction file EN50081 2 EMC Generic Emission Standard Part 2 Industrial Envi ronment EN50082 2 EMC Generic Immunity Standard Part 2 Industrial Envi ronment This product is intended for use in an industrial environment Electrical Specifications DC Powe...

Page 69: ...strial Networks AB Doc Id HMSI 168 25 Mechanical Specifications Mechanical Rating IP20 NEMA 1 DIN Rail Mount The X gateway connects to a DIN 3 rail Dimensions Figure 8 1 Anybus X gateway J1939 to Modbus Interface Mechanical Dimensions ...

Page 70: ...dbus RTU slave Serial Interface Baud rate 4800 9600 or 19200 Parity None Even or Odd Stop bits 1 or 2 J1939 Specifications Message Types Supports transmission and reception of the following message types PDU1 destination specific PDU1 broadcast PDU2 Addressing Claims and protects a single configurable address Self configurable using a list of addresses Transport Protocol Sessions Support of J1939 ...

Page 71: ...9 1 Power and Network 15 Pin D Sub Connector Pin Connection Pin Connection 1 Not used 9 24 VDC Common 2 Not used 10 24 VDC 3 Not used 11 Modbus RS 485 A 4 Not used 12 Modbus RS 485 B 5 Not used 13 J1939 CAN Shield 6 Not used 14 J1939 CAN Low 7 Not used 15 J1939 CAN High 8 Not used Table 9 1 Power and Network Connector Pin Definitions ...

Page 72: ...in Connection 1 Shield 14 Not used 2 Transmit Data 15 Not used 3 Receive Data 16 Not used 4 Not used 17 Not used 5 Not used 18 Not used 6 Not used 19 Not used 7 Signal Ground 20 Not used 8 Not used 21 Not used 9 Not used 22 Not used 10 Not used 23 Not used 11 Not used 24 Not used 12 Not used 25 Not used 13 Not used Table 9 2 Configuration Connection Pin Definitions ...

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