J2-3067-4, Data Highway Plus Interface Module
Contents
1. Dropline Data Highway Plus Interface Module LET Processor Module g Terminatin Resistor A B Devices Figure 1 1 Connecting the AutoMax System to the Data Highway Plus Network 1 1 Each AutoMax Processor has access to the look alike PLC 5 or SLC registers through the AutoMax rack backplane The Data Highway Plus Interface module transfers data between the PLC 5 look alike image and remote Allen Bradley equipment using the Word Range Read Word Range Write and Read Modify Write commands The module is capable of responding directly to these commands as well as typed read and write commands from the PLC 5 command set and eight other commands from the basic command set These commands are described in section 4 2 The individual command formats are described in the various Allen Bradley instruction manuals The remainder of this manual describes the functions and specifications of the Data Highway Plus Interface module It also includes a detailed description of module installation and troubleshooting procedures as well as programming methods Additional Information You must be familiar with all the instruction manuals that describe your system configuration This may include but is not limited to the following J 3636 COMMON MEMORY MODULE INSTRUCTION MANUAL2. A 1 Appendix B Module Block Diagram B 1 Appendix C Netvvork Connector Pin Assignments C 1 Appendix D Data Highway Plus Interface Module 7 Segment LED Error Codes D 1 Appendix E GATEVVAY CMD OK Status Codes E 1 Appendix F Mapping of Active Station List F 1 Appendix G Register Map for Diagnostic Counters G 1 Appendix H Extended Status EXT STS Codes for Command OF H 1 Appendix Converting A B Register Numbers to AutoMax Register and Bit Numbers for Monitoring 1 1 Appendix Recommendations For Reducing Noise On The Cable System J 1 Figure 1 1 Figure 2 1 Figure 4 1 Figure 4 2 Figure 4 2 Figure 4 3 Figure 4 3 Figure 4 4 Figure 4 5 Figure 4 6 Figure 4 7 Figure 4 8 Figure 4 9 Figure 4 10 List of Figures Connecting the AutoMax System to the Data Highway Plus Netvvork 1 1 Data Highway Plus Interface Module Faceplate 2 2 Dual Port Memory Map 4 1 Status and Control Register Assignments 4 2 Status and Control Register Assignments Gontin ed i erste 4 3 PLC 5 Data Image 4 3 PLC 5 Data Image Continued 4 4 Global Data Register Assignments
3. 3649 AutoMax CONFIGURATION TASK INSTRUCTION MANUAL J 3650 AutoMax PROCESSOR MODULE INSTRUCTION MANUAL J 3669 AutoMax POCKET REFERENCE J 3675 AutoMax ENHANCED BASIC LANGUAGE INSTRUCTION MANUAL J 3676 AutoMax CONTROL BLOCK LANGUAGE INSTRUCTION MANUAL 2 3093 AutoMax LADDER EDITOR INSTRUCTION MANUAL J2 3094 AutoMax ENHANCED LADDER LANGUAGE INSTRUCTION MANUAL J 3677 AutoMax LADDER LOGIC LANGUAGE INSTRUCTION MANUAL IEEE 518 GUIDE FOR THE INSTALLATION OF ELECTRICAL EQUIPMENT TO MINIMIZE ELECTRICAL NOISE INPUTS TO CONTROLLERS Your ReSource AutoMax PROGRAMMING EXECUTIVE INSTRUCTION MANUAL 1770 6 5 16 Allen Bradley Data Highway Data Highway Plus DH 485 Communication Protocol and Command Set Data Highway Cable Assembly and Instruction Manual Your personal computer and DOS operating system manuals Other instruction manuals applicable to your hardware configuration 1 2 Related Hardware and Software M N 57C442 contains one Data Highway Plus Interface module The module can be used with the following hardware and software da 2 3 M N 57C430A 576431 576435 Automax Processor IBM AT compatible computer running DOS version 3 1 or later M N 61C127 RS 232C ReSource Interface cable This cable is used to connect the personal computer to the AutoMax Processor module M N 57C413 or 57C423 Common Memory module This module is used when there is more than one AutoMax Processor in a rac
4. Figure 4 6 PLC 5 Command Set 4 12 For the commands shown in figure 4 6 both logical binary and logical ASCII addresses are supported Command Function T Description o f Diagnostic Counters Reset 05 r Diagnostic Read 05 05 Piagnostic Status Figure 4 7 Privileged Commands in the Basic Command Set The Diagnostic Read command returns the values for counters as shown in Appendix G The Diagnostic Status command returns 17 bytes containing the following information Bye Vale 7 T reinar 8 8 Module identiier 4 cie station itpointer iow byte 5 Active station Ist pointer high byte 8 __ Diagnostic counters pointer low byte 7 Diagnostie counters pointer high byte DS Hsme 9 T ns SOS 077 1 Temnanane automatically padded with banks Figure 4 8 Diagnostic Status Command Data Bye Vale Memmg Protected Bit Write 0 nla Protected Wie Unprotected Bit Write Unprotected Read 08 wa Unprotected Write Figure 4 9 Non Privileged Commands in the Basic Command Set The commands shown in figure 4 9 write directly to or read directly from file N7 on the module The address field is used as an offset into the file If the address does not exist an error is returned
5. Altitude 1000 meter 3300 feet without derating Dimensions Height 29 85 cm 11 75 inches Width 3 18 cm 1 25 inches Depth 18 73 cm 7 375 inches Weight 0 9 kg 2 pounds Maximum Power Dissipation 2 825W System Power Requirements 5VDC 650 mA 12 VDC not used 12 VDC not used A 1 A 2 M u l t i b u s Appendix B Module Block Diagram Address Control IE Buffers Addi ff T m Address ldg cpu Buter vo p romac Address Decode iL Bus Arb m E Shared gt Control Data Highway Plus Controller Data Highway Plus Network B 1 B 2 Appendix C Network Connector Pin Assignments This appendix assumes the network cable system has been installed using the appropriate A B Data Highway Plus instruction manual The faceplate of the Data Highway Plus Interface module contains a Phoenix Combicon connector for connection to the Data Highway Plus network Each station is connected to the Data Highway Plus network trunk line using a drop line constructed of Belden 9463 twin axial cable or equivalent The connector has 6 pins which are numbered from the bottom The bottom bin is pin 1 the top pin is pin 6 Pin 1 is internally connected to 4 pin 2 to pin 5 and pin 3 to pin 6 Any connections to pins 1 2 or 3 could also be made to 4 5 or 6 respectively The CLEAR wire of the twin axial cable should be connected to Pin 1 or 4 bottom pin or pin
6. Oo Operation successful Invalid operation Invalid length Invalid offset Invalid length offset Invalid destination 0 77 octal Invalid data type Invalid route equal to own address Inconsistent response Module not enabled Parameter specifying destination address is invalid Data Highway Plus module not found or inaccessible No available data path Data Highway Plus Local and Remote Status STS error codes are written to the upper byte If the first digit is 1 the STS code is local if the first digit is 3 the STS code is remote Destination memory full cannot accept command now Destination did not acknowledge command Network contention possible duplicate station or bad cabling Local Data Highway Plus port is disconnected or no other station found Timeout waiting for a reply message Duplicate station detected Station is off line Hardware fault Transaction number mismatch Duplicate transaction number Illegal command or format Host is malfunctioning and will not communicate Remote station host is missing disconnected or shut down Host could not complete function due to hardware fault Addressing problem or memory protected rungs Function disallowed due to command protection selection A B Processor is in program mode Compatibility mode file missing or communication zone problem Remote station cannot buffer command not used Remote station problem due to download Cannot execute co
7. Unprotected writes will be processed in the same manner as Protected writes and will not be permitted to store data in the protected areas of the PLC 5 image in the dual port memory 4 2 6 Off link Routing Paths This section describes using a Data Highway network as a bridge to link two Data Highway Plus networks using A B 1785 KA modules If you need information about other bridge networks refer to A 8 documentation The routing information is added to the slave_reg parameter of the GATEWAY_CMD_OK function A leading exclamation mark is used to signify that routing information is included The routing information is added to the beginning of the string as hexadecimal bytes separated by periods See figure 4 10 For a 1785 KA Data Highway bridge the twelve routing bytes are Bye Value Meanm za 1 I 7 10 T 12 for a 1785 KA bridge Figure 4 10 Off link Message Routing Bytes where DID is the destination node s link ID see A B documentation This is 0 for a 1785 KA bridge DNDE is the station address of the destination on the destination link For the Data Highway bridge only the low byte is used It consists of the upper two bits of the Data Highway address of the remote bridge 1785 KA and the lower six bits of the Data Highway Plus address of the final Data Highway Plus station SID is the link ID of the local network see A B documentation This is O for a 1785 KA bridge SNDE is
8. 4 5 Commands Used with GATEWAY CMD 2222222 4 10 PLC 5 Command Set 4 11 Privileged Commands in the Basic Gommand Set range soeurs 4 12 Diagnostic Status Command Data 4 12 Non Privileged Commands in the Basic Command Set 4 12 Off link Message Routing Bytes 4 13 1 0 INTRODUCTION The products described in this manual are manufactured or distributed by RelianceElectric Industrial Company The Data Highway Plus Interface module M N 57C442 provides a direct connection for the AutoMax system to the Allen Bradley Data Highway Plus network The Data Highway Plus Interface module can be placed in any slot in an AutoMax rack that contains at least one AutoMax Processor and can communicate with up to four AutoMax Processors in that rack The AutoMax rack containing the Data Highway Plus Interface module appears as a single station on the Data Highway Plus network Figure 1 1 illustrates an AutoMax system connected to a Data Highway Plus network Trunkline Segment x
9. ATTENTION This module contains static sensitive components Careless handling can cause severe damage Do not touch the connectors on the back of the module When not in use the module should be stored in an anti static bag The plastic cover should not be removed Failure to observe this precaution could result in damage to or destruction of the equipment gt DD IBM is a registered trademark of International Business Machines Corporation Allen Bradley A B AutoMax Data Highway Plus PLC PLC 2 PLC 5 SLC and Reliance are registered trademarks of Rockwell Automation Multibus is a trademark of Intel Corporation Phoenix and Combicon are registered trademarks of Phoenix Contact Ltd ReSource is a trademark of Reliance Electric Company or its subsidiaries Copyright Rockwell International 2000 Table of Contents 1 0 Introduction 1 1 1 1 Additional Information 1 2 1 2 Related Hardware and Softvvare 1 3 2 0 Mechanical Electrical Description 2 1 2 1 Mechanical Description 2 1 2 2 Electrical Description 2 3 3 0 Installation nennen nenne 3 1 Sa 9077000000 00 3 1 3 2 Initial Installation 3 1 3 3 Module Replacement 3 3 4 0 Progr
10. 4 of the Phoenix connector the DRAIN bare wire to Pin 2 or 5 and the BLUE wire to Pin 3 or 6 The color wire that is at the top on the three pin connector on the A B device is the color you connect to pin 1 on the connector on the Data Highway Plus Interface module faceplate See the figure below Data Highway Plus Interface Module A B Device C 1 C 2 Appendix D Data Highway Plus Interface Module 7 Segment LED Error Codes The following error codes may be displayed on the 7 segment display 0 EPROM checksum failure 0 Gateway parameter error RAM checksum failure Reply TNS error RAM AA failure RAM SS failure Duplicate station detected RAM address line failure Module not ready RAM address line clear failure Invalid station address on thumbwheels Module has not been enabled register 5 bit 0 Data Highway Plus initialization failure Module re start in progress Board Reset signal Local watchdog failure Local port disconnected AutoMax Processor watchdog failure Power failure nma gt NG b B w iv Module failure All errors except 3 4 6 7 and C are fatal errors and indicate a malfunctioning module D 1 D 2 Appendix E GATEWAY _CMD_OKO Status Codes The following codes are written to the variable defined as the status parameter in the GATEWAY _CMD_OK function used to initiate Data Highway Plus network data transfers from an AutoMax application task Q D
11. as read only or for system use only must not be written to by the user Writing to these registers and bits may result in improper system operation Failure to observe this precaution could result in bodily injury 4 1 4 2 4 1 1 Status and Control Registers The status and control registers are described in figure 4 2 Registers 4 31 are read write registers from the host AutoMax Processor registers 32 63 are read only Clear Diagnostic Counters If this register is set to a non zero value the module software will clear the contents of the Data Highway Plus diagnostic counters registers 40 57 The module software will then clear this register to indicate the counters have been cleared This register can be written to at any time Module Control When set to 1 bit O of this register is used by the user to enable the module No communication can take place until this bit is set You should wait at least two seconds after enabling the module before you send any messages on the network Bit O will be reset by the module on a hardware or software reset Bits 1 15 are reserved for future use Message Timeout in 100 msec increments The default value is 150 5 seconds The value can range from 1 to 254 If a reply to a message is not returned within this time period the module will return an error via the GATEWAY_ CMD_OK function This value can be changed at any time Data Highway Plus options Bits in this reg
12. failed diagnostic See Appendix D for a list of error codes 2 4 3 0 3 1 INSTALLATION This section provides instructions on how to install the Data Highway Plus Interface module Wiring ATTENTION The user is responsible for conforming with all applicable local national and international codes Wiring practices grounding disconnects and over current protection are of particular importance Failure to observe this precaution could result in severe bodily injury or loss of life 3 2 To reduce the possibility of electrical noise interfering with the operation of the control system exercise care when installing the wiring from the control system to the external devices For detailed recommendations refer to IEEE 518 Initial Installation Use the following procedure to install the module Step 1 Stop any application tasks that may be running ATTENTION This equipment is at line voltage when AC power is connected Disconnect and lock out all ungrounded conductors of the AC power line Failure to observe these precautions could result in severe bodily injury or loss of life ATTENTION Inserting or removing a module may result in unexpected machine motion Power to the machine should be turned off before inserting or removing the module Failure to observe these precautions could result in bodily injury Step 2 Turn off power to the rack All power to the rack as well as all powe
13. go on Verify the installation by monitoring registers on the module Refer to Appendix 3 4 40 PROGRAMMING 4 1 The Data Highway Plus network is a token passing network which means that any device on the network can initiate communication with any other device Each node can also pass one word of global data with the token This global data is available to all other nodes on the network Up to 64 devices can be connected directly to the network with station numbers ranging from 0 to 77 octal Duplicate addresses are not allowed The network communication rate can be 57 6 115 2 or 230 4 Kbaud depending upon the user configuration This section describes how the data is organized in the module and provides examples of how the module is accessed by the application software For more detailed information on programming refer to the AutoMax Programming Language manuals Register Organization The Data Highway Plus Interface module contains dual port memory that can be accessed through the AutoMax rack backplane by application tasks running on the AutoMax Processor as well as by the microprocessor on the module The memory organization is as shown in the following diagram The following sections describe the different register areas in more detail 4384 16383 Integer files N7 N18 Figure 4 1 Dual Port Memory Map ATTENTION Registers and bits in the data highway plus interface module that are described
14. inserting or removing the module Failure to observe these precautions could result in bodily injury Step 2 Turn off power to the rack All power to the rack as well as all power leading to the rack should be off Step 3 Disconnect the cable from the module faceplate Step 4 Use a screwdriver to loosen the screws that hold the module in the rack Take the module out of the slot in the rack ATTENTION This module contains static sensitive components Careless handling can cause severe damage Do not touch the connectors on the back of the module When not in use the module should be stored in an anti static bag The plastic cover should not be removed Failure to observe this precaution could result in damage to or destruction of the equipment Step 5 Take the new module out of its shipping container Take it out of the anti static bag being careful not to touch the connectors on the back of the module Step 6 Insert the module in the rack making sure that it is well seated in the rack Step 7 Set the station number of the new module to the same number as the old module by using the two thumbwheel switches on the module faceplate The upper switch is the most significant digit and the lower switch is the least significant digit Step 8 Attach the Data Highway Plus cable to the module faceplate Step 9 Turn on power to the rack Step 10 After power up diagnostics are complete the green status LED will
15. to Appendix C for information on cabling and termination Turn on power to the rack An internal diagnostic routine is automatically executed by the module If an error is detected an error code is displayed on the seven segment LED If the green status LED is OFF and no seven segment error code is displayed a local watchdog failure has occurred If a diagnostic fault code other than 3 4 6 7 or C is displayed for more than 5 seconds the Data Highway Plus Interface module must be replaced If the thumbwheel switches are set to an invalid station number fault code 6 will be displayed on the seven segment LED on the module faceplate after power up To clear the invalid station number fault code refer to section 5 2 After power up diagnostics are complete the green status LED will go on Verify the installation by monitoring registers on the module Refer to Appendix 3 3 Module Replacement Use the following procedure to replace the Data Highway Plus Interface module Step 1 Stop any application tasks that may be running ATTENTION his equipmentis atline voltage when AC power is connected Disconnect and lock out all ungrounded conductors ofthe AC power line Failure to observe these precautions could result in severe bodily injury or loss of life ATTENTION Inserting or removing a module may result in unexpected machine motion Power to the machine should be turned off before
16. 0 as ENABLE ENABLE SLOT 4 REGISTER 5 BIT 0 The application task would use the following statement to enable the module 10 ENABLE 1 put module on line Example 2 In the configuration define the following registers ENABLE SLOT 4 REGISTER 5 BIT O TIMEOUT SLOT 4 REGISTER 6 RESP_TIME SLOT 4 REGISTER 22J OPTIONS SLOT 4 REGISTER 7 The application could enable the module as follows 10 OPTIONS 0 Baud rate 57 6 kbd no global amp data transmitted transmit to amp vacant nodes enabled 20 TIMEOUT 50 message timeout 5 seconds 30 RESP TIME 2 GATEWAY CMD OK should poll amp for response every 250 ms 40 ENABLEO 1 put module on line 50 DELAY 2 SECONDS Example 3 Global Data If an application is passing global data it must enable global data and write to the local global data register In the configuration define the following registers ENABLE SLOT 4 REGISTER 5 BIT 0 OPTIONS SLOT 4 REGISTER 7 GD SLOT 4 REGISTER 4352 4 9 4 10 4 2 4 The application task could contain the following statements 10 OPTIONS 256 W enable global data baud rate amp 57 6 Kbaud transmit to vacant amp nodes enabled 15 GD 15 set global data 20 ENABLE 1 put module online 30 DELAY 2 SECONDS Commands Initiated by the Data Highway Plus Interface Module The commands described in figure 4 5 can be used by the AutoMax Processor in the GATEWAY_CMD_OK function
17. Data Highway Plus Interface Module M N 570442 Instruction Manual J2 3067 4 Rocicuvell Automation The information in this user s manual is subject to change without notice ATTENTION Only qualified electrical personnel who are familiar with the construction and operation of this equipment and the hazards involved should install adjust operate and or service this equipment Read and understand this manual and other applicable manuals in their entirety before proceeding Failure to observe this precaution could result in severe bodily injury or loss of life ATTENTION The user is responsible for conforming with all applicable local national and international codes Wiring practices grounding disconnects and over current protection are of particular importance Failure to observe this precaution could result in severe bodily injury or loss of life ATTENTION The user must provide an external hardwired emergency stop circuit outside the controller circuitry This circuit must disable the system in case of improper operation Uncontrolled machine operation may result if this procedure is not followed Failure to observe this precaution could result in bodily injury ATTENTION Inserting or removing a module may result in unexpected machine motion Power to the machine should be turned off before inserting or removing the module Failure to observe these precautions could result in bodily injury
18. If the problem cannot be corrected using the procedures below the unit is not user serviceable ATTENTION Only qualified electrical personnel familiar with the construction and operation ofthis equipmentand the hazards involved should install adjust operate or service this equipment Read and understand this manual and other applicable manuals in their entirety before proceeding Failure to observe this precaution could result in severe bodily injury or loss of life 5 1 5 2 5 3 5 3 1 The OK LED Is OFF Problem The green status LED labeled OK on the Data Highvvay Plus Interface module faceplate is off The LED should be on when the module has passed its internal diagnostics after povver up f the green OK status LED is off and no error code is displayed a local vvatchdog failure has occurred Try cycling power to the rack If the OK status LED remains off replace the module Invalid Station Address Problem Error code 3 or 6 appears on the Data Highway Plus Interface module s LED display at power up Error code 3 indicates a duplicate station address Error code 6 indicates an invalid station address To clear the error code change the thumbwheel switch settings and cycle power on the module Transmission Link Failures Problem Error codes 12 13 14 15 or 17 are returned by the GATEWAY_CMD_OK function These error codes indicate various net
19. Plus addresses N16 0 N16 999 AutoMax Registers 13384 14383 Integer file N17 Data Highway Plus addresses N17 0 N17 999 AutoMax Registers 14384 15383 Integer file N18 Data Highway Plus addresses N18 0 N18 999 AutoMax Registers 15384 16383 Figure 4 3 PLC 5 Data Image Read Write Read Write Read Write Read Write Read Write Read Write Read Write Read Write Read Write Read Write Read Write Mapping is handled transparently by the Data Highway Plus Interface I module software For example if another node writes to this node at address N7 0 the data is written starting at AutoMax register 4384 and so on 4 1 3 Global Data Registers Registers 4096 4159 contain all of the global data that can exist ona Data Highway Plus network Each station is assigned one register Particular locations are meaningful only if the corresponding station is writing global data All registers are read only from the point of view of the AutoMax Processor except for register 4352 which is read write The global data update rate depends on the number of stations on the network whether the stations have global data transmission enabled and the communication traffic on the network Register Description Register Description 4096 Global data station 00 4130 Global data station 42 4097 Global data stat 4131 Global data station 43 4098 Global data station 02 4132 Global data station 44 4099 Global data stati 4133 Gl
20. VARPTRI B3BASE SZE THEN 20000 process errors In the example above the routing bytes were determined as follows Recall that the last item in the actual slave reg parameter is the destination file address LSAP Meaning 01 for a 1785 KA bridge go Qo go Qo D Qo Qo 24h DID_LO 00 for a 1785 KA bridge DID Hi 00 for a 1785 KA bridge DNDE LO 84h see below DNDE HI 00 for a 1785 KA bridge LIFETIME 80h for a1785 KA bridge SID LO 00 for a 1785 KA bridge SID HI 00 for a 1785 KA bridge SNDE HI 14h is the station number of the Data Highway Plus module SNDE LO 00 for a 1785 KA bridge NSAP 00 for a 1785 KA bridge Byte 5 in the routing path DNDE_LO is determined as follows The station address of the remote bridge is 240 octal 10100000 Ly 10 The station address of the final Data Highway Plus station is 4 00000100 A 000100 DNDE combines the upper two bits of the remote bridge station address with the lower six bits of the final Data Highway Plus station address 10000100 This is equivalent to 84h 4 2 6 2 Example of Bridging the DH Link to a ControlNet Network Using AutoMax and its 57C442 Data Highway Plus interface module to send and receive data file values to a Control Net PLC5 through a ControlLogix gateway Knowledge Base Document 10628 defined the network layout and network routing table set ups Thi
21. a Highway Plus Data Highway Il Data Highway 485 Cable 3 The AB drives group recommends that a common mode choke be installed at each drive This common mode choke is a ferrite core part number 165482 It is made by Dexter Permag and is Dexter Permag part number 43825 TC The drives group recommends that 4 turns of the network cable be dressed through this ferrite core Where poor installation and wiring practices are suspected and problems exist after items 1 2 and 3 have been implemented additional ferrite beads Fair Rite Products Corporation number 2643626502 as discussed in publication 1770 4 1 can be added In some cases slowing the network speed down from 230 kbaud to 115 kbaud has helped as well J 1 J 2 1 Allen Bradley Drive Mayfield Hts Ohio 44124 6118 1 800 241 2888 Rockwell Automation Printed in U S A J2 3067 4 December 2000
22. amming 4 1 4 1 Register Organization 4 1 4 1 1 Status and Control Registers 4 2 4 1 2 Data Registers 4 3 4 1 3 Global Data Registers 4 5 4 2 AutoMax Application Programming 4 6 4 2 1 Variable Configuration 4 6 4 2 2 Application Programming 4 8 4 2 8 Enabling the Data Highway Plus Interface Module 4 9 4 2 4 Commands lnitiated by the Data Highway Plus Interface Module 4 10 4 2 5 Commands from Remote Stations 4 11 4 2 6 Off link Routing Paths 4 13 4 2 6 1 Example of Bridging Two Data Highway Plus Networks using 1785 KA modules 4 13 4 2 6 2 Example of Bridging the DataHighway Plus Link to a ControlNet Netvvork 4 15 4 2 7 Programming Examples 4 16 5 0 Diagnostics and Troubleshooting 5 1 5 1 The OK LED Is OFF 5 1 5 2 Invalid Station Address 5 1 5 3 Transmission Link Failures 5 1 5 3 1 Rack Failure 5 1 5 3 2 Remote Station and Link Failure 5 2 5 4 BUS Error or excea vea res en Eo a 5 2 Appendices Appendix A Technical Specifications
23. d this is the address of the bridge node on the local Data Highway Plus network See section 4 2 6 for more information slave reg is a variable name or expression of type string that specifies the starting register number on the target device For commands 3 4 and 5 this is a logical address represented as an ASCII string for PLC 3 and PLC 5 controllers It can also be a 5 digit octal number For commands 1 and 2 this argument contains 4 hexadecimal digits in upper case 2ABC This field can also contain Data Highway Plus routing information Refer to section 4 2 6 For command 5 Read Modify Write this argument can contain up to ten addresses separated by commas The address must exist at the target station master var is a variable name or expression usually via the BASIC language VARPTR function of type double integer representing the physical address of the starting register on the Data Highway Plus module to be read from written to num regs is a variable name or expression of type integer that defines for Word Range Read Write command 3 or 4 the number of registers to be transferred from 1 to 1000 for Read Modify Write command 5 the number of addresses to be written in the range 1 to 10 for Unprotected Read Write command 1 or 2 the number of registers to be transferred from 1 to 100 The GATEWAY_CMD_OK function will be true if the command was successfullycompleted If the function is false the ret
24. e 1000 registers can be transferred in a single request The transfer cannot cross file boundaries Command 5 Read Modify Write sets or resets specified bits in specified registers in the data table at the remote address The data AND and OR masks must already exist in the registers on the Data Highway Plus Interface module A maximum of ten registers can be modified in a single request The transfer cannot cross file boundaries Note The A B controller at the remote address may change the states of the original bits in memory before this command command 5 can write the word back to memory Therefore some bits may unintentionally be overwritten To help prevent this we suggest that you use this command to write into the storage area of a programmable controller s data table and have the controller read the word only not control it In cases where any of the commands above generates multiple messages on the network for example reading or writing more registers than can fit in one Data Highway Plus message the module takes care of formatting and generating the messages required The GATEWAY_CMD_OK command is complete when a reply is received for the last message Commands from Remote Stations The Data Highway Plus Interface module will respond to the following incoming commands from remote stations Command Function Dep oF s LT LE Typed Write 7 Write Block or 99 Word Range Write Wie Block
25. egisters to be amp transferred 23 LOCAL CMD The Data Highway Plus command amp sent by the module 30 DST 7 31 STS 0 32 SZE 100 33 CMD 1 40 IF NOT GATEWAY_CMD_OK STS CMD DST 2000 amp VARPTRI B3BASE SZE THEN 20000 process errors amp at line 20000 Example 5 Command 2 Unprotected Write In the example below the Data Highway Plus Interface module is writing 100 words from the local N7 file to the file address 1234 octal in the PLC at station address 7 The variable N7BASE is defined in the rack configuration 10 COMMON N7BASE 20 LOCAL DST Y 21 LOCAL STS M 22 LOCAL SZE M 23 LOCAL CMD M 30 DST 7 31 STS 0 32 SZE 100 33 CMD 2 Represents the physical address of amp the starting register on the amp Data Highway Plus module to be 8 written to The address of the destination node amp on the local Data Highway Plus network The location where the status amp resulting from the operation is stored The number of registers to be amp transferred The Data Highway Plus command amp sent by the module 40 IF NOT GATEWAY_CMD_OK STS CMD DST 1234 amp VARPTRI N7BASE SZE THEN 20000 V process errors amp at line 20000 4 19 4 20 5 0 DIAGNOSTICS AND TROUBLESHOOTING This section describes how to troubleshoot the Data Highway Plus Interface module See Appendix D for a list of error codes that can be displayed by the module
26. eted area Command execution failure for unknown reason possible PLC 3 histogram overflow Data conversion error Scanner not able to communicate with 1771 rack adapter Adapter cannot communicate with module 1771 module response was not valid Duplicated label File is open another node owns it Another node is the program owner not used H 1 H 2 Appendix Converting A B Register Numbers to AutoMax Register and Bit Numbers for Monitoring The A B registers in the dual port memory of the Data Highway Plus Interface module may be displayed using the Monitor I O function in the AutoMax Programming Executive This appendix provides a method for converting the A B register number to a register number recognized by the Monitor I O application The following table shows the correspondence between A B register numbers and AutoMax register numbers A B File AutoMax Address Register B3 n 64 n B4 n 1088 n B5 n 2088 n N7 n 4384 n N8 n 5384 n N9 n 6384 n N10 n 7384 n N11 n 8384 n N12 n 9384 n N13 n 10384 n N14 n 11384 n N15 n 12384 n N16 n 13384 n N17 n 14384 n N18 n 15384 n Appendix 4 Recommendations For Reducing Noise On The Cable System We recommend that all drive systems using 576442 Data Highway Plus Interface Modules and or 57C443 AutoMax Allen Bradley Remote l O Scanner Modules should be provided with 1770 SC station connectors installer per item 2 below All drives which are connected usi
27. g referenced in the application tasks agrees with the slot number defined during configuration Step 2 Verify the station address is correct The thumbwheel switches used to set the station address can be changed while the module is on line without having any effect on the system On the next power up if the thumbwheel switches define a station that is valid the Processor will accept it as a valid station Step 3 Verify that the application software is correct Verify that the application software is not attempting to write to READ ONLY registers on the module Step 4 Verify that the hardware is working correctly ATTENTION This equipment is at line voltage when AC power is connected Disconnect and lockout all ungrounded conductors of the AC power line Failure to observe this precaution could result in severe bodily injury or loss of life Make certain that power is off before removing any module from the rack Systematically replace the Data Highway Plus Interface module the Processor module s and the rack backplane one at a time with a corresponding module or assembly known to be operating correctly After replacing each module or assembly if the problem is not corrected replace the original item before going on to the next item Appendix A Technical Specifications Ambient Conditions Storage Temperature 40 C to 85 C Operating Temperature 0 C to 60 C Humidity 5 to 95 non condensing
28. ister must be set before you go on line Use bits O and 1 to set the Data Highway Plus baud rate For this baud Set 57 6 Kbaud bit O to O bit 1 to Bit 8 is used to enable transmission of this station s global data If this bit is set to 1 the station s global data is transmitted with the token The default is O transmission of global data disabled If bit 12 is set to 1 messages to stations which are off line are not transmitted on the network but are returned immediately to the module with an error code 17 This minimizes disruptions to the network The default for this bit is O transmission to off line stations enabled which is consistent with the operation of A B PLCs In this case the module will ret urn error 12 when a message is sent to an off line station The remaining bits are reserved for future use Station Name The user can write a station name consisting of up to eight ASCII characters plus a null terminator If the name is eight characters long the terminator is not required However if the name contains fewer than eight characters the terminator must be included The default station name is AutoMax EL R W 22 Response Poll Period in units of 1 8 second This register is used by the GATEWAY_CMD_OK function to compute the time interval to poll for command complete The default value is 1 which corresponds to a response polling period of 0 125 second Jess ET Figu
29. k various model numbers ReSource AutoMax Programming Executive software A B Data Highway Plus cabling hardware figures The thick black bar shown on the right hand margin of this page will be used throughout this instruction manual to signify new or revised text or 2 0 2 1 MECHANICAL ELECTRICAL DESCRIPTION This section describes the mechanical and electrical characteristics of the Data Highway Plus Interface module Mechanical Description The Data Highway Plus Interface module is a printed circuit assembly that plugs into the backplane of an AutoMax rack The module consists of a printed circuit board faceplate and protective enclosure The faceplate contains ejector tabs at the top and bottom to simplify removing the module from the rack See figure 2 1 for an illustration of the module faceplate The 6 pin Phoenix Combicon connector on the faceplate is used to make the connection to the Data Highway Plus network by means of a standard twin axial cable Refer to Appendix C or to Data Highway Plus documentation for the cable connections The two thumbwheel switches on the faceplate are used to set the module s stationnumber in octal on the Data Highway Plus network The upper thumbwheel switch represents the most significant digit the lower thumbwheel switch represents the least significant digit f you set the switches to invalid octal digits 8 or 9 the station number will not be accepted and mod
30. mask pairs are stored in three consecutive pairs of registers starting at B3BASE The variable B3BASE is defined in the rack configuration 10 COMMON B3BASE Represents the physical address of 8 the starting register on the 8 Data Highway Plus moduletobe amp read from 20 LOCAL DST The address of the destination node amp on the local Data Highway Plus network 21 LOCAL STS The location where the status amp resulting from the operation is stored 22 LOCAL SZE The number of registers to be amp transferred 23 LOCAL CMD The Data Highway Plus command amp sent by the module 30 DST 0 31 STS 0 32 SZE 3 33 CMD 5 40 IF NOT GATEWAY_CMD_OK STS CMD DST amp N7 0 N7 2 N7 4 VARPTRI B3BASE SZE amp THEN 20000 process errors at line 20000 Example 4 Command 1 Unprotected Read In the example below the Data Highway Plus Interface module is reading 100 words from address 2000 octal in the PLC at station address 7 The data read is stored in the local 83 file the variable B3BASE is defined in the rack configuration 10 COMMON B3BASE Represents the physical address of amp the starting register on the 8 Data Highway Plus module to be amp read from 20 LOCAL DST The address of the destination node amp on the local Data Highvvay Plus netvvork 21 LOCAL STS The location where the status amp resulting from the operation is stored 22 LOCAL SZE The number of r
31. mmand due to active IPBs not used not used There is an error code in the Extended Status register register 33 on the Data Highway Plus Interface module See appendix H E 1 E 2 Appendix F Mapping of Active Station List The following table shows the mapping between active station addresses and the status reported in registers 34 37 Register 34 35 36 F 1 F 2 Appendix G Register Map for Diagnostic Counters This area contains statistics for the network as a whole and also for this station These values are returned to any remote station which requests them from this station This is also the format of data in counters returned from remote stations to this station These registers are read only Register Byte Meaning 40 LO Received ACK with bad CRC HI not used 41 LO Timeout expired with no ACKs received HI Transmit re tries exhausted 42 LO NAK illegal protocol operation received HI NAK bad LSAP received 43 LO NAK no memory received HI Received ACK NAK too short 44 LO Received ACKJNAK too long HI Something other than ACK NAK received 45 LO Token pass timeout HI Token pass re tries exhausted 46 LO Claim token sequence entered HI Token claimed 47 LO Bad CRC in received frame HI NAK illegal protocol operation sent 48 LO NAK bad LSAP sent HI NAK no memory sent 49 LO Received frame too small HI Received frame too long 50 LO Received a re transmissi
32. ng Data Highway Plus or Allen Bradley Remote should include part number 43825 TC ferrite cores installed per item 3 below Installation recommendations 1 When installing either the 57C442 or 570443 module into the card rack make sure that its holddown screws are properly tightened at all times The basic design of the AutoMax has a floating ground on the backplane rather than a solid DC ground like the PLC 5 does on its backplane In AutoMax it has always been the case that the cards retaining screws have always had to be tightened down tightly so that we could insure a good ground connection Also make sure that the AutoMax rack is properly grounded 2 Always install an AB 1770 SC station connector box near the AutoMax rack So that the drop cable from the AutoMax to the station connector box does not exceed a length of 10 foot Connect the drop cable and the trunkline cables as specified in the installation manual for the station connector box This will result in the shield of the drop cable being isolated from the network in the Station Connector box Make sure that the station connector box is grounded as specified Follow the Installation Guideline documents that AB has for Data Highway Plus and RIO networks as well as the Station Connector Box Guideline documents are AB publications 1770 2 20C for the 1770 SC Station Connector Box 1770 4 1 for Industrial Automation Wiring and Grounding Guidelines and 1770 6 2 2 for Data Highway Dat
33. obal data station 45 4100 Global data stat 4134 Global data station 46 4101 Global data stati 4135 Global data station 47 4102 Global data stati 4136 Global data station 50 4103 Global data stat 4137 Global data station 51 4104 Global data stati 4138 Global data station 52 4105 Global data stat 4139 Global data station 53 4106 Global data stati 4140 Global data station 54 4107 Global data stat 4141 Global data station 55 4108 Global data stati 4142 Global data station 56 4109 Global data stat 4143 Global data station 57 4110 Global data stati 4144 Global data station 60 4111 Global data stat 4145 Global data station 61 4112 Global data stati 4146 Global data station 62 4113 Global data stat 4147 Global data station 63 4114 Global data stati 4148 Global data station 64 4115 Global data stat 4149 Global data station 65 4116 Global data stati 4150 Global data station 66 4117 Global data stat 4151 Global data station 67 4118 Global data stati 4152 Global data station 68 4119 Global data stati 4153 Global data station 69 4120 Global data stat 4154 Global data station 70 4121 Global data stat 4155 Global data station 71 4122 Global data stat 4156 Global data station 72 4123 Global data stati 4157 Global data station 73 4124 Global data stat 4158 Global data station 74 4125 Global data stati 4159 Global data station 75 4126 Global data stat 4160 Note used Reserved for 4127 Global data stat 4351 fu
34. on address The data must already exist in the registers on the Data Highway Plus Interface module Data can be transferred from any file in the PLC 5 data image area A maximum of 100 registers can be transferred in a single request The transfer cannot cross file boundaries Commands 3 4 and 5 come from the PLC 5 command set Commands 3 and 4 are accepted by PLC 3 and PLC 5 processors Command 5 is accepted only by PLC 5 processors For commands 4 2 5 3 4 and 5 only logical addresses represented as ASCII strings are supported Command 3 Word Range Read transfers a block of data from the target registers at the remote address to the specified AutoMax registers on the Data Highway Plus Interface module Data can be transferred to any file in the PLC 5 data image area except the B4 file The data is stored in the specified registers on the Data Highway Plus Interface module A maximum of one file 1000 registers can be transferred in a single request The transfer cannot cross file boundaries Command 4 Word Range Write transfers a block of data from the specified AutoMax registers on the Data Highway Plus Interface module to the target registers at the destination address The data must already exist in the registers on the Data Highway Plus Interface module Data can be transferred from any file in the PLC 5 data image area The data is stored in the specified registers on the Data Highway Plus Interface module A maximum of one fil
35. on of a frame HI Received frame aborted line noise 51 Message successfully sent 52 Message successfully received 53 Command successfully sent 54 Reply successfully received 55 Command successfully received 56 Reply successfully sent 57 LO Reply could not be sent HI Number of active nodes G 1 G 2 Appendix H Extended Status EXT STS Codes for Command 0F If the value in the upper byte of the GATEWAY_CMD_OK status parameter variable is 3F then there is a value in the upper byte of the extended status register register 33 on the Data Highway Plus Interface module which supplies further information The following table shows possible values for the extended status error code O O1 ND mm O U 2 o not used A field has an illegal value Less levels specified in address than minimum for any address More levels specified than system supports Symbol not found Symbol is of improper format Address doesn t point to something usable File is wrong size Cannot complete request situation has changed since the start of the command Data or file is too large Transaction size plus word address is too large Access denied improper privilege Condition cannot be generated resource is not available Condition already exists resource is already available Command cannot be executed Histogram overflow No access Illegal data type Invalid parameter or invalid data Address reference exists to del
36. r leading to the rack should be off ATTENTION This module contains static sensitive components Careless handling can cause severe damage Do not touch the connectors on the back of the module When not in use the module should be stored in an anti static bag The plastic cover should not be removed Failure to observe this precaution could result in damage to or destruction of the equipment 3 1 3 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Take the module out of its shipping container Take it out of the anti static bag being careful not to touch the connectors on the back of the module Insert the module in the desired slot in the rack making sure t is well seated in the rack The module may reside in any slot in the rack Use a screwdriver to secure the module in the rack Set the station number of the Data Highway Plus Interface module in octal using the two thumbwheel switches on the module faceplate The upper switch is the most significant digit and the lower switch is the least significant digit The station number is read from the thumbwheel switches only at power up Therefore make sure each device on the network has a unique station number 0 77 octal before power is applied If more than one device on the network is given the same station number the module will not be able to communicate and an error will be displayed Connect the module to the Data Highway Plus network Refer
37. re 4 2 Status and Control Register Assignments R 0 32 Data Highway Plus station address 0 77 octal The value comes from the thumbwheel switches on the faceplate and is updated only on power up The module will not begin to communicate on the network until the station address is properly set and bit O in register 5 is set by the user Note that the on line Monitor function in the AutoMax Programming Executive software will display the station address in decimal or hexadecimal notation Data Highway Plus Extended Status EXT STS error code Refer to Appendix H R 0 34 37 Data Highway Plus active station list This is an array of 64 bits representing the status 1 active O inactive of each station on a Data Highway Plus network Refer to Appendix F for information on how this list is mapped to these registers The local station does not appear on this list s 40 57 Data Highvvay Plus Diagnostics Counters Refer to Appendix G s R 0 61 Module Software Revision Level A value of 100 indicates version 1 00 and so on 62 63 Interface module ID ASCII GTVVY Figure 4 2 Status and Control Register Assignments 4 1 2 Data Registers The data image in the dual port memory appears as a subset of the PLC 5 data table The equivalent AutoMax and Modicon registers on the module are shown in figure 4 3 Multibus Access Data HighwayPlus AutoMax application tasks Access Read Only Binary file B3 Read Wri
38. rite to Integer file N7 in the PLCS C is NNNN IF NOT GATEWAY_CMD_OKO STS CMD DST 101 24 07 00 01 00 80 05 00 07 00 00 N7 00 VARPTR N7BASE SZE THEN XXXX Parameters STS CMD DST SZE and N7BASE are discussed in the manual and are defined as LOCAL variables in the basic task NNNN is the line number for the function and XXXX is a line number in the task where code to process errors is located 4 2 7 Programming Examples This section contains examples of initiating commands by using the GATEVVAY CMD OKA function within an AutoMax task In the following examples each register is defined in the configuration for the rack as follows For example B3BASEY SLOT 4 REGISTER 64 N7BASE SLOT 4 REGISTER 4384 The statements above are used in the following examples The VARPTR function is used to return a double integer value for the address of the specified argument Example 1 Command 3 Word Range Read In the example below the Data Highway Plus Interface module is reading 100 words from file N7 0 in the PLC at station address 0 The data read is stored in the local B3 file The variable B3BASE is defined in the rack configuration 10 COMMON B3BASE Y Represents the physical address of amp the starting register on the 8 Data Highway Plus module to be read from 20 LOCAL DST MH The address of the destination node amp on the local Data Highway Plus network 21 LOCAL STS The location where the statu
39. s resulting from the operation is stored 22 LOCAL SZE The number of registers to be amp transferred 23 LOCAL CMD The Data Highway Plus command amp sent by the module 30 DST 0 31 STS 0 32 SZE 100 33 CMD 3 40 IF NOT GATEWAY_CMD_OK STS CMD DST N7 0 amp VARPTRI B3BASE SZE THEN 20000 V process errors amp at line 2000 Example 2 Command 4 Word Range Write In the example below the Data Highway Plus Interface module is writing 100 words from the local N7 file to the file address N10 10 in the PLC at station address 0 The variable N7BASE is defined in the rack configuration 10 COMMON N7BASE Represents the physical address of amp the starting register on the 8 Data Highway Plus module to be amp written to 20 LOCAL DST address of the destination node on the localData Highway Plus network 21 LOCAL STS The location where the status 8 resulting from the operation is stored 22 LOCAL SZE MH The number of registers to be amp transferred 23 LOCAL CMD Data Highway Plus command sent by The module 30 DST 0 31 STS 0 32 SZE 100 33 CMD 4 40 IF NOT GATEWAY_CMD_OK STS CMD DST N10 10 8 VARPTRI N7BASE SZE THEN 20000 V process errors at line 20000 4 18 Example 3 Command 5 Read Modify Write In the example below the Data Highway Plus Interface module writes to three addresses in a PLC N7 0 N7 2 and N7 4 The AND OR
40. s document will show the network and which parameters relate to the AutoMax Network Configuration Source Destination AutoMax ControlLogix Gateway PLC 5 570442 dh 1756dhrio backplane 1756cnb cnet1 5 Node 7 Link 5 Node 54 Node 5 Link 7 Node 1 Slot 3 Slot 5 The 57C442 AutoMax Data Highway Plus module has the ability to perform Off Link Routing This routing is used to move data from one network to another network This is covered as a separate subject in the modules instruction manual Twelve bytes of data are required in order to program this function in the AutoMax For the network configuration shown above they are 4 15 4 16 Function LSAP Network Control Byte Dest Link ID Lo Dest Link ID Hi Dest Node Address Lo Dest Node Address Hi Lifetime 7 2 3 4 5 6 7 8 Source Link ID Lo Source Link ID Hi Source Node Address Lo Source Node Address Hi NSAP The Destination and Source Link ID s and Node Addresses come from the network configuration The values for LSAP Network Control Byte Lifetime and NSAP are constants The twelve parameter values in the order shown are used with the AutoMax GATEWAY_CMD_OK function to program the AutoMax They are the same for either writing CMD 4 and reading CMD 3 data across the network An example of the GATEWAY_CMD_OK function is a basic task which is used to either read or w
41. te Data Highway Plus addresses B3 0 B3 999 AutoMax Registers 64 1063 Read Write Binary file B4 Read Only Data Highway Plus addresses B4 0 B4 999 AutoMax Registers 1088 2087 Read Write Binary file B5 Read Write Data Highway Plus addresses B5 0 B5 999 AutoMax Registers 2088 3087 Command Buffer Area Global Registers Area Read Write Integer file N7 Read Write Data Highway Plus addresses N7 0 N7 999 AutoMax Registers 4384 5383 Figure 4 3 PLC 5 Data Image 4 3 4 4 Read Write Read Write Read Write Read Write Read Write Read Write Read Write Read Write Read Write Read Write Read Write Integer file N8 Data Highway Plus addresses N8 0 N8 999 AutoMax Registers 5384 6383 Integer file N9 Data Highway Plus addresses N9 0 N9 999 AutoMax Registers 6384 7383 Use this file for communication with a SLC 500 Processor Integer file N10 Data Highway Plus addresses N10 0 N10 999 AutoMax Registers 7384 8383 Integer file N11 Data Highway Plus addresses N11 0 N11 999 AutoMax Registers 8384 9383 Integer file N12 Data Highway Plus addresses N12 0 N12 999 AutoMax Registers 9384 10383 Integer file N13 Data Highway Plus addresses N13 0 N13 999 AutoMax Registers 10384 11383 Integer file N14 Data Highway Plus addresses N14 0 N14 999 AutoMax Registers 11384 12383 Integer file N15 Data Highway Plus addresses N15 0 N15 999 AutoMax Registers 12384 13383 Integer file N16 Data Highway
42. the station address of this station on the local Data Highway Plus network 4 2 6 1 Example of Bridging Two Data Highway Plus Networks using 1785 KA modules n the following example the Data Highway Plus Interface module is station 24 octal on a Data Highway Plus network The first 1785 KA bridge module is at address 42 octal on the Data Highway Plus network and 142 octal on the Data Highway network The remote bridge module is at station address 240 octal on the Data Highway network and 40 octal on the Data Highway Plus network The final destination node is at station address 4 on the remote Data Highway Plus network 4 13 4 14 24 octal 42 octal 14h 22h N Data Highway Plus 05 REM 142 octal 240 octal 40 octal 4 octal 62h AOh 20h 4h bt Data Data Highway icd us The variables that follow define parameters for the GATEWAY CMD OK function 10 COMMON B3BASE Represents the physical address of 20 LOCAL DST 21 LOCAL STS 22 LOCAL SZE 23 LOCAL CMD 30 DST 34 31 STS 0 32 SZE 100 33 CMD 3 starting register on the Data Highway Plus module to be read from The address of the bridge node on the local Data Highway Plus network The location where the status resulting from the operation is stored The number of registers to be transferred The Data Highway Plus command sent by the module 40 IF NOT GATEWAY_CMD_OK STS CMD DST 101 24 00 00 84 00 80 00 00 14 00 00 N7 0
43. to initiate a command on the Data Highway Plus Interface module See section 4 2 2 for more information on the GATEWAY_CMD_OK function GATEWAY CMD OK Data Highway Plus Command Code Desription Function Unprotected Read CMD 01 FNC n a Unprotected Write CMD 08 FNC n a Word Range Read CMD OF FNC 01 Word Range Write CMD OF FNC 00 Read Modify Write CMD OF FNC 26 Figure 4 5 Commands Used with GATEWAY_CMD_OK Commands 1 and 2 come from the basic command set and are accepted by PLC 2 PLC 3 PLC 5 and SLC 500 processors For PLC 2 controllers addresses will be 5 digit octal numbers For PLC 3 and PLC 5 processors compatibility files must exist Refer to A B documentation for more information For communication with a SLC 500 processor use only commands 1 and 2 and only file N9 for data transfers Command 1 Unprotected Read transfers a block of data from the target registers at the remote address to the specified AutoMax registers on the Data Highway Plus Interface module Data can be transferred to any file in the PLC 5 data image area The data is stored in the specified registers on the Data Highway Plus Interface module A maximum of 100 registers can be transferred in a single request The transfer cannot cross file boundaries Command 2 Unprotected Write transfers a block of data from the specified AutoMax registers on the Data Highway Plus Interface module to the target registers at the destinati
44. toMax tasks the data is directly obtained from or written to the register image on the module The data storage for an AutoMax variable mapped to an A B register will always exist in the Data Highway Plus module s dual port memory The registers in the Data Highway Plus Interface module s A B register image may be displayed using the AutoMax Programming Executive Monitor I O function Refer to Appendix for the method used to convert A 8 register numbers so that they can be viewed using the monitor 4 8 4 2 2 Application Programming Read and write commands from the Data Highway Plus Interface module are initiated from a BASIC application task by executing the GATEWAY CMD OKQ function GATEWAY_CMD_OK status cmd code 5 slave drop 6 amp slave reg master var num_regs where status is an integer variable representing the location where the status resulting from the operation is stored Refer to Appendix E for a list of status values cmd code is a variable name or expression of type integer representing the Data Highway Plus command sent by the module The commands are described in section 4 2 4 Any other commands result in a status of 1 invalid operation being returned slave drop is variable name or expression of type integer containing the destination station number in decimal or hexadecimal This is the station number on your Data Highway Plus network In the case where off link addressing is use
45. ts in the rack configuration task Note that ABDEF statements cannot be used with the Data Highway Plus Interface Module The format for the IODEF statement used only in V2 1 and earlier is as follows nnnn IODEF variable name SLOT slot number amp REGISTER register number BIT bit number where nnnn configuration task line number variable_name integer or boolean variable Double integer variables can beused but should be avoided because of the possibility that all 32 bits will not transfer in one operation IF YOU USE DOUBLE INTEGER VARIABLES IN THIS INSTANCE YOU MUST IMPLEMENT A SOFTWARE HANDSHAKE BETWEEN THE TRANSMITTER AND RECEIVER TO ENSURE THAT BOTH THE LEAST SIGNIFICANT AND MOST SIGNIFICANT 16 BITS HAVE BEEN TRANSMITTED BEFORE THEY ARE READ BY THE RECEIVING APPLICATION PROGRAM FAILURE TO OBSERVE THIS PRECAUTION COULD RESULT IN BODILY INJURY slot number slot number of the Data Highway Plus Interface module in the rack This number may range from 0 to 15 register number Multibus register number on the Data Highway Plus Interface module Register numbers correspond to 16 bit words on the module bit number bit number of the I O point in the register Bit numbers range from 0 to 15 Bit numbers are specified for boolean variables only Any variables contained in the rack configuration are accessible by any task on any AutoMax Processor in the rack When AutoMax variables are referenced in Au
46. ture use 4128 Global data stat 4352 This station s global data 4129 Global data stati 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 Note that station numbers are inoctal with decimal equivalents in parentheses Figure 4 4 Global Data Register Assignments 4 5 4 6 4 2 4 2 1 Register 4352 is a Read Write register from Multibus To transmit global data you must set bit 8 in the Data Highway Plus options register register 7 before you go on line The module will then pass the value in register 4352 when it passes the token AutoMax Application Programming The sections that follow describe how to configure registers in the Data Highway Plus Interface module s dual port memory and how to initiate commands from the module Link configuration and application programming examples are provided Variable Configuration AutoMax application tasks communicate with the Data Highway Plus Interface module by referencing registers in the dual port memory These registers must first be configured using the AutoMax Programming Executive software In AutoMax Programming Executive Version 3 0 and later you define these registers using the Variable Configurator Specific screens are available for each module f you are using AutoMax Programming Executive Version 2 1 or earlier you define these registers using IODEF statemen
47. ule error code 6 will be displayed on the seven segment LED For diagnostic purposes the faceplate contains a seven segment LED which displays error codes The error codes are defined in Appendix D A green status LED labeled OK on the faceplate indicates when the module is operational ON or when it should be replaced OFF 2 1 2 2 DATA HIGHWAY PLUS INTERFACE 57C442 STATION ADDRESS M RELIANCE ELECTRIC Figure 2 2 Data Highway Plus Interface Module Faceplate 2 2 Electrical Description The Data Highway Plus Interface module contains an 8 MHz microprocessor that shares 32K of dual port memory with the AutoMax rack backplane This memory is accessible to both the on board microprocessor and AutoMax Processors in the rack A block diagram is shown in Appendix B The module contains a vvatchdog timer which is enabled when power is turned on to the module The microprocessor must reset the watchdog timer within a specified time or the microprocessor will shut down and the status LED labeled OK on the faceplate will turn off At power up the on board microprocessor runs diagnostics on the microprocessor EPROM RAM and dual port memory as well as performing system level diagnostics As each test is run a number is written out to the seven segment display If there is a fault during these tests the microprocessor halts the vvatchdog times out and the seven segment LED displays the code of the
48. urned status will be an error code See Appendix E for the error codes returned by the GATEWAY CMD OKQ function 4 2 3 Multiple tasks can access the module Note however that if more than four tasks try to initiate messages at the same time error code 22 will be returned to the additional tasks attempting accesses Enabling the Data Highway Plus Interface Module The connection between the Data Highway Plus Interface module and the Data Highway Plus network is configured through an AutoMax BASIC task The task must set the network baud rate and whether global data for this node is enabled by setting the appropriate bits in register 7 Values can also be set for message time out register 6 and response poll period register 22 if desired Note that values for registers 6 and 22 can be set at any time The final step required to put the module on line is to set bit O in register 5 Wait at least two seconds after writing to this register before sending messages on the network If you are using AutoMax Programming Executive software version 2 1 or earlier any required registers must be defined using IODEFs in the configuration task If you are using AutoMax Programming Executive software version 3 0 or later these registers are defined using the Variable Configurator within the Programming Executive The following example illustrates one method of enabling the module Example 1 In the configuration define register 5 bit
49. work errors Verify that the cable connections to each device are secure Check the cable connection at the module faceplate and at the remote device Check the network cabling and termination Rack Failure If the AutoMax Processor in the rack that contains the Data Highway Plus Interface module fails or issues aBOARD RESET command clears all outputs in the rack the entire image in the Data Highway Plus Interface module s dual port memory is cleared The module will remain off line for at least 1 second to allow application tasks to recognize that the module went off line 5 1 5 2 5 3 2 5 4 Remote Station and Link Failure When the Data Highway Plus Interface module is not initiating messages but is simply responding to unsolicited commands from remote stations a failure in the remote stations cannot be detected by the module itself except by monitoring the active station list registers 34 37 When the module is initiating messages a link failure is indicated by a Response Timeout error Bus Error Problem Error codes 31 appears on a Processor module s LED display This error indicates the system has a problem accessing a module in the rack though the backplane bus A bus error may be caused by removal of a module a module failure or a rack backplane failure Use the following procedure to isolate a bus error Step 1 Verify that all modules are in the correct slot Verify that the slot number bein
Download Pdf Manuals
Related Search