1747-NM004, Distributed I/O Scanner User`s Manual
Contents
1. 3 Enter the ID Code number e 03507 for 7 I O block Configuration e 13607 for 30 I O block Configuration 4 When using the 30 I O block configuration you can enter the number of Scanned Input and Output Words using the Specialty I O and Advanced Setup menus You can specify less than the default and reduce the processor scan time by transferring only the part of the input and output image that your application requires Important Do not set either of these values to 0 The scanner will not work correctly The default Maximum number of Input and Output Words is 8 when using ID number 03507 and 32 when using ID number 13607 You do not have to change these values After selecting the maximum number of I O blocks by entering the proper ID code the specific number of I O blocks on the DIO Link is programmed using bits 0 4 of the scanner output image Control Word Further information regarding the Control Word is found in the sections entitled 7 I O block Configuration Output Image and 30 I O block Configuration Output Image Chapter 3 Configuration and Programming The SLC processor input and output images for the scanner are dependent SLC Processor Input and he SLC p input and output images for th depend Output Images upon whether the 7 I O block or 30 I O block configuration is selected 7 1 0 Block Configuration Input Image The 7 I O block configuration input image consists of eight words one communication status word a2. 0 4 are used to configure the scanner with the number of I O blocks connected to the scanner Important This bit should not be reset to 0 during program execution After this bit is set further transitions of bits 0 4 Number of I O blocks are ignored 30 I O Block Configuration Output Image Example Configuration Data Valid Disable Outputs Number of I O bit 10 i blocks bits 0 4 14 13 12 bit 9 Bit Number decimal 15 11 10 9 8 7 6 5 4 3 i 1 0 Input File Control Word Word 0 O e 0 VO block 1 Output Word 1 O e 1 VO block 15 Output Word 15 ESSERE t Va i Reserved Word 16 Output bits i Bits 6 and 7are only available to I O Reserved blocks with 8 outputs VO block 31 Output Word 31 FA O e 31 The output word for each I O block is placed in the word corresponding to the VO block address The bits of each output word correspond to the outputs on the VO block For example bit 5 of output word 31 controls output 5 of I O block 31 e slot number of the SLC rack containing the scanner Control Word Configuration Information Configurable Item Result Number of I O Blocks 00001 to 11110 1 30 1 0 blocks 0 Outputs enabled Disable Outputs 1 Outputs disabled 0 Invalid Configuration Data Valid 1 Valid 00000 configures the scanner for 7 1 0 blocks Scanner detects rising edge Chapter 3 Configuration and Programming Use of the Communication Status Words Use of the Control Word The bits
3. 5 1 DU1 shipped with block I O Intended Audience We assume that you have a working knowledge of SLC 500 products If you do not obtain the proper training before using the DIO Scanner Conventions The following terms are used throughout this manual Term 5 01 processor 5 02 processor DH 485 Data Link DIO Definition Refers to the SLC 5 01 processor Catalog Number 1747 L511 and L514 Refers to the SLC 5 02 processor Catalog Number 1747 L524 Refers to an Allen Bradley network supporting the transfer of processor program information between SLC processors and programming devices This network may consist of multiple processors and or programming devices Acronym for Distributed 1 0 DIO link DIO system 1 0 blocks Isolated Coupler programming device rack scanner SLC processor Refers to an Allen Bradley network supporting high speed transfer of control information This network consists of a single scanner and multiple I O blocks Refers to the scanner I O blocks and programming devices properly connected to the DH 485 data link and DIO link Refers to the Bulletin 1791 1 0 blocks Refers to the DH 485 Data Link Isolated Link Coupler Catalog Number 1747 AlC The Isolated Coupler is used to connect an SLC processor and or programming device to the DH 485 Data Link Refers to either an SLC 500 HHT Catalog Number 1747 PT1 ora PC with Advanced Programming Software APS Catalog Nu
4. B Link Coupler Although the Series A Link Coupler is labeled differently you do not have to rewire your connector Because the DIO DH 485 shields are tied together at each block you should ony connect the shields to chassis ground in one place If you choose to ground the shields using Chassis Grounding Method 2 do not use Chassis Grounding Method 1 shown on page 2 3 TERM and A must be jumpered to terminate the link if the Isolated Coupler is at the end of the DH 485 Link 2 5 Chapter 2 Wiring and Installation Scanner Installation Installation procedures for this scanner are the same as any other discrete I O or specialty module CAUTION Disconnect power before attempting to install remove or wire the scanner 1 Align the full sized scanner circuit board with the rack card guide The first slot slot 0 of the first rack is reserved for the SLC processor 2 Slide the scanner into the rack until the top and bottom latches are latched To remove the scanner press the releases at the top and bottom of the scanner and slide it out 3 Connect the DIO Link cable to the network connector as shown on page 2 3 Attach the proper terminating resistor to each end of the cable To ground the cable shield attach the spade lug supplied to a short section of wire user supplied Connect the wire to the center terminal of the network connector 4 Insert the cable tie in the slots and secure the cable 5 Cover all un
5. Distributed I O System It will help you e understand the DIO system and its components e select appropriate DIO system components for your application e install program start up and operate your DIO Scanner This manual provides specific information regarding scanner installation and operation In addition it offers general information on the other DIO system components The following table identifies the chapters titles and contents chapter Purpose Familiarizes you with the rest of the 1 Introduction Provides an overview of the DIO system Describes how to install and wire the 2 Wiring and Installation DIO Scanner Describes how to program the SLC processor that controls the DIO Scanner and DIO system 3 Configuration and Programming Provides LED status information troubleshooting suggestions and error codes o ES PERS Contains DIO Scanner and DIO System A Appendix A Contains 1 0 Block Dip switch settings 4 Start Up Operation and Troubleshooting Preface Related Publications The following publications are available to assist you in the use of your DIO system e APS Library Catalog Number 1747 ND001 Series B shipped with Advanced Programming Software e HHT Library Catalog Number 1747 ND002 Series B shipped with HHT e SLC 500 Fixed and Modular Controller Library Catalog Number 1747 ND003 Series A shipped with SLC processor e Block I O User s Manual Publication 1701 6
6. O blocks than you have connected the scanner will not communicate with I O blocks which have higher address numbers than the number of configured I O blocks Disable Outputs When bit 9 is set and the SLC processor is in run mode the scanner disables all outputs on all I O blocks Whether the disabled outputs are reset to 0 or held in their last state depends on the Hold Last State dip switch setting located on each I O block e If bit 9 is set and the Hold Last State function is disabled the outputs will be reset to 0 e If bit 9 is set and the Hold Last State function is enabled the outputs are held in their last state Important The Disable Outputs bit is constantly monitored by the scanner when the SLC processor is in run mode Chapter 3 Configuration and Programming Configuration Data Valid Bit Bit 10 of the Control Word word 0 must be set after bits 0 4 Number of I O blocks are valid When this bit is first set to 1 from within the run mode bits 0 4 Number of I O blocks are used to configure the scanner with the number of I O blocks connected Important This bit should not be reset to 0 during program execution Once this bit is set further transitions of bits 0 4 Number of I O blocks are ignored 7 I O block Configuration Output Image Example Configuration Disable Number of Data Valid Outputs VO blocks Bit Number decimal 15 14 13 12 11 10 9 8 7 6 5 4 X 2 1 0 Input File Contr
7. for the exact number of I O blocks that are on the DIO Link Number of I O blocks bits 0 4 e start the scanner communicating with the I O Blocks Configuration Data Valid Bit bit 10 e disable the I O block outputs Disable Output Bit bit 9 To start the scanner communicating with the I O blocks when the SLC processor enters run mode the SLC processor program should e load the correct Number of I O Blocks to bits 0 to 4 e set the Configuration Data Valid bit Any further transitions of bits 0 4 Number of I O Blocks while the SLC processor is in run mode are ignored Do not reset the Configuration Data Valid bit to O during program execution To change the number of I O blocks to which the scanner is communicating the SLC processor must be taken out of run mode Application Example Chapter 3 Configuration and Programming The Output Disable bit can be used anytime that the SLC processor is in run mode The bit has no effect when the processor is in program test fault mode The Output Disable bit is not affected by and does not affect the bits for Data Valid or Number of I O Blocks The application example shown below illustrates the use of the Output Control Word to configure the scanner for the number of I O blocks on the DIO Link and to start the scanner communicating with the I O blocks In the following application an input from a float switch is monitored When the switch contacts close the pump starts p
8. scanner sends I O block inputs to the SLC processor e the I O block outputs are reset to O at all times e the Communication Status Word is valid WARNING When entering run mode for the purpose of testing I O block outputs will reflect the SLC processor output image To ensure the I O block outputs do not inadvertently energize when entering run mode either make sure that the SLC processor output image is zero or disconnect the scanner from the DIO Link After the SLC processor is put into test mode the output image can become non zero and or the scanner can be reconnected to the DIO Link without the I O block outputs turning on Chapter 4 Operation and Troubleshooting I O Block Hold Last State Operation During normal operation the I O block outputs reflect the SLC processor output image However there are several conditions under which the I O block outputs will not reflect the SLC processor output image but will either be reset to 0 or will hold their last state In these cases the state of the I O block outputs will be determined by the output control information sent by the scanner and the Hold Last State switch on the I O blocks The I O block outputs will be reset to 0 regardless of the I O Block Hold Last State switch setting or the SLC processor output image whenever e the scanner loses power e the SLC processor is taken out of the run mode The I O block will use its Hold Last State switch to determine the state
9. when communications is lost refer to the I O block User s Manual 4 3 Chapter 4 Operation and Troubleshooting Scanner Test Mode Operation 4 4 The scanner test mode operation is different for the 7 I O block and 30 I O block configurations 30 1 0 block Configuration For the 30 I O block configuration the Number of I O Blocks and Configuration Data Valid bits will operate in test mode in the same manner as they operate in run mode When entering test mode from program mode the scanner begins communicating with the I O blocks when the bits for Configuration Data Valid and Number of I O Blocks are set Once in test mode e the scanner sends the I O block inputs to the SLC processor e the Communication Status Word is valid e the I O block outputs are reset to 0 at all times 7 1 0 block Configuration For the 7 I O block configuration the Number of I O Blocks and Configuration Data Valid bits will not function until the SLC processor first enters run mode If test mode is entered from program mode e the scanner will not communicate with any I O blocks e the scanner will not send I O block inputs to the SLC processor and e I O block outputs will not be affected To enter the test mode and have the I O blocks communicating with the scanner the SLC processor must first enter run mode and then enter test mode When entering test mode in this manner e the scanner will be communicating with the I O blocks e the
10. 5 0 First scan bit sinh i Communications il TON timed out timer Rung 3 VE TIMER ON DELAY EN ng 1 Timer T4 0 E Time Base 0 01 DN Status bit for 1 0 Preset 600 block 1 Accum 0 Turns alarm on T4 0 0 20 A Rung 4 pf L AN DN i Communications Pump motor timed out bit RG ELl E10 O1L A Rung 5 JE JE o 0 1 0 Float switch input Communication S tatu bit for 1 0 block 1 ENDI 3 12 Chapter Objectives Start Up Chapter Operation and Troubleshooting This chapter will provide information on e scanner start up e scanner normal operation e scanner test mode operation e scanner slot disable operation e I O block hold last state operation e scanner and I O block status LEDs e troubleshooting the scanner and DIO Link e SLC processor error codes for the scanner The following steps will assist you in the start up of your DIO Link Before you power up your system make sure you have configured your SLC processor and downloaded an application program 1 Make sure power is applied to all I O blocks on the DIO Link 2 Apply power to your SLC processor If you powered down with the SLC processor in program test or fault mode you will have to place your processor in run mode When power is applied to your SLC system the scanner requires several seconds to complete its power up diagnostics During this time the FAULT and COMM LEDs cycle on and off After the diagnostics are complete and the SLC proce
11. ALLEN BRADLEY Distributed I O Scanner Catalog Number 1747 DSN User s Manual Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment Application Considerations for Solid State Controls Publication SGI 1 1 describes some important differences between solid state equipment and hard wired electromechanical devices Because of this difference and also because of the wide variety of uses for solid state equipment all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable In no event will the Allen Bradley Company be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment The examples and diagrams in this manual are included solely for illustrative purposes Because of the many variables and requirements associated with any particular installation the Allen Bradley Company cannot assume responsibility or liability for actual use based on the examples and diagrams No patent liability is assumed by Allen Bradley Company with respect to use of information circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of the Allen Bradley Company is prohibited 991 Allen Bradley Company Inc PLC SLC Dataliner Pa
12. Example issnin aa feb sete eed eae dearer rd 3 11 Programming Example Using 7 I O Block Configuration 3 12 Chapter 4 Chapter Objectives sa osc ht ate Ae NA ine ete bee 8 4 1 Start UP ee a aie a ARAA A EE we Ae R E T A EA 4 1 Normal Operation 2 4 joa aed peepee ds ee E EE E AAE a 4 2 Scanner Slot Disable Operation 00 0 0 e eee eee eee 4 3 Loss of Communications 0 0 0 c cece eee eee 4 3 Scanner Test Mode Operation 0 0 eee eee eee ee 4 4 30 I O Block Configuration 00 eee eee eee 4 4 7 I O Block Configuration 0 0 cee ee eee eee 4 4 I O Block Hold Last State Operation 0005 4 5 Status EEDS o rot Ba eh AE E A E TA E a eis Re N Bae 8 4 6 Troubleshooting si ramasini en r ee ale hot Se E E S 4 7 Error Codes ra yiera eg gai ee AA AA et Wile bei elle be aedd 4 8 Chapter 5 Chapter Objectives oc cn ack cise peas dos Bee bad wee tae ot 5 1 Scanner Operating Specifications 00 0 cece e eee eee ee 5 1 Network Specifications 0 0 cece eee eee eee eee 5 1 Using This Manual Purpose of this Manual Contents of this Manual Preface Read this chapter to familiarize yourself with the rest of the manual It provides information concerning the e contents of this manual e intended audience e conventions used warnings and cautions This manual describes how the Distributed I O DIO Scanner Catalog Number 1747 DSN is used in the
13. IO Link consists of a single master device the scanner and multiple slave devices the I O blocks The scanner and I O blocks are daisy chained together by a single twisted pair cable Belden 9463 Each I O block is assigned a I O block number from 1 to 31 excluding 16 which is invalid by setting the appropriate dip switches on the I O block I O block numbers must be assigned consecutively For example if 5 I O blocks are used they must be assigned I O block numbers 1 to 5 I O blocks do not have to be wired in a contiguous order For example I O block 5 can follow I O block 2 The inputs and outputs for each I O block are mapped into the words in the SLC processor s input and output images These words correspond to the scanner s slot number and the I O block s number For example if the scanner is installed in slot 2 of the SLC Rack I O block number 1 will have e its input data reflected in word 1 of the slot 2 input image its output data reflected in word 1 of the slot 2 output image The scanner communicates with each I O block in a round robin fashion The scanner initiates communications with an I O block by first sending its output data The I O block then responds by sending its input data back to the scanner After the scanner completes its I O transfer with the last I O block it begins another transfer with the first I O block The DH 485 Data Link is an Allen Bradley communications network that supports th
14. The scanner cannot be used with SLC 500 Fixed Hardware Systems Since the scanner operates at a fixed baud rate of 230 4K configure the I O blocks for 230 4K baud This lets the scanner communicate with the I O blocks I O blocks are addressed as I O blocks 1 through 15 and 17 through 31 There is no I O block 16 I O blocks must be addressed consecutively however they do not have to be wired in a contiguous order b VO bloc VO blod VO block V O block VO block I O block 3 6 2 1 4 5 In the example above the six I O blocks are addressed in numerical order as I O blocks 1 thru 6 however they are not wired in numerical order A unique address is assigned to each I O block using dip switches located on each I O block These switches are also used to set the I O block baud rate and output Hold Last State operation For further I O block dip switch information see the I O Block User s manual Publication 1701 6 5 1 DU1 1 5 Chapter Objectives Determining Block Requirements Determining Scanner and SLC Processor Requirements Chapter Wiring and Installation This chapter contains the information necessary to e select the proper DIO system components e install the scanner into the SLC Rack e wire the DIO Link Network e wire the DH 485 Data Link Network The number of I O blocks you require is based upon the number of input and output devices called for in your functional specification The proximity of each d
15. configured power status have no power or are faulted COMM LED Duplicate scanner detected Disconnect DIO Link from scanner and solid red or hardware error on scanner cycle scanner power If the FAULT LED is off look for another scanner on the network If the condition persists replace the scanner 4 7 Chapter 4 Operation and Troubleshooting Error Codes Error codes are reported in word 6 of the SLC processor status file The format of the status word and applicable error codes are shown below JE Slot Number Error Code 01H to 1EH The table below lists and explains the possible errors that you may encounter using an SLC 5 01 or 5 02 processor with the DIO scanner If you are usingan the following error indicate s message s SLC 5 01 processor 58H configuration for an invalid number of I O blocks or scanner hardware problem or duplicate scanner SLC 5 02 processor duplicate scanner 62H configuration for an invalid number of blocks 68 69 6A 6C 6D 6E 6FH scanner hardware problem For a complete description of the error codes refer to the user s manual provided with your programming device Chapter Specifications Chapter Objectives This chapter provides the scanner specifications Scanner Operating Specifications Backplane Current Consumption 900 mA 5VDC Operating Temperature 32 F to 131 F 0 C to 55 C Storage Temperature 40 F to 185 F 40 C to 85 C Humidi
16. e og Correct Last device must be terminated Last device must be terminated Programming Device APS Ei Da N A a sSaoa Incorrect Last device must be terminated 22a Last device must be terminated Dae Important The device at each end of the link must be terminated using the DH 485 Termination Switch switch 10 2 4 Chapter 2 Wiring and Installation The Isolated Coupler is attached to the DH 485 Data Link using its 6 position DH 485 Data Link connector The I O blocks are attached to the DIO Link using 4 of the 6 terminals on the DIO connector The DH 485 Data Link cable shield must be earth grounded at one point on the link The SLC processor is connected to the Isolated Coupler with a Catalog Number 1747 C11 Communication Cable which is included with the Isolated Coupler The programming device is connected to the I O block or Isolated Coupler using a Catalog Number 1747 C10 Communication Cable SLC CPU Termination DH 485 A DH 485 B Common mi Shield drain wire my Chassis Ground Chassis Grounding Method 2 Isolated Link SLC Coupler Processor 1747 C11 Communication Cable DH 485 B DH 485 A DIO DH 485 DH 485 shield Common oa Geer coal Fee Pea i Senk b As 1 1 1 DIO Connector for the O gt ma sgeeece eevee te amp fa sio 18 A COM LL VVLV IN The wiring scheme shown is that of a 1747 AIC Series
17. e transfer of information between programming devices and SLC processors The programming device and SLC processor are attached to the DH 485 Data Link using either an Isolated Coupler or an I O block The DH 485 Data Link may consist of multiple Isolated Couplers and or I O blocks that provide for communication between several programming devices and or processors The Isolated Couplers and I O blocks are daisy chained together by a single twisted pair cable Belden 9842 to form the DH 485 Data Link The programming devices and SLC processors are attached to the Isolated Coupler or I O block using Communication Cables Catalog Numbers 1747 C10 and C11 For additional information on the DH 485 Data Link see the Installation and Operation Manual for SLC 500 Modular Hardware Style Programmable Controllers Publication 1747 804 Chapter 1 Introduction DIO Scanner Features The DIO Scanner is featured below SCANNER O mm NEN FAULT LED COMM LED DIO Link Connector Chassis Ground Terminal Cable Tie LEDs Two LEDs are provided to monitor scanner and communications status FAULT LED used to monitor scanner status Its normal state is off The FAULT LED is off whenever the scanner is operating properly COMM LED used to monitor communications with the I O blocks Its normal state is solid green The COMM LED status information is valid only when the FAULT LED is off DIO Link Connector This three p
18. esistors must be attached at each end of the link A termination kit is included with each scanner for this purpose In addition the DIO Link cable shield must be earth grounded at one point on the link Specific attention should be paid to the DIO Link cable shield grounding because this must be coordinated with the grounding of the DH 485 Data Link shield Examples of correct and incorrect DIO Link configurations are shown below and specific wiring details are provided on the following page Correct Terminating Resistor Terminating Resistor Incorrect Terminating Resistor Terminating Resistor Correct ERa Terminating Resistor Incorrect Terminating Resistor Terminating Resistor 2 2 Chapter 2 Wiring and Installation The DIO Link must be terminated at each end with an 82 Ohm 1 2 watt resistor The resistor is connected across Line 1 and Line 2 In addition Chassis Grounding Method One is illustrated below SCANNER 820 Terminating Resistor lt Clear lt Shield Line2 Clear Shield Shield Line1 Blue Chassis Ground Chassis Grounding Method 1 DIO DH 485 shield DIO DH 485 shield DIO Clear line 2 DIO Blue line 1 DIO Clear line 2 DIO Blue line 1 sas eeee a a Terminating CE R RA C RA Resistor 2 SHD1 B T 2 SHD1 B ET Terminating Resistor Because the DIO DH 485 shields are tied together at each b
19. evice must also be taken into consideration For detailed information regarding the types of I O blocks available and for I O block installation and wiring instructions refer to the I O Block User s Manual Publication 1701 6 5 1 DU1 The number of scanners required depends upon the number of I O blocks each scanner will be configured for and the type of SLC processor used to control the scanner Scanners can be configured to address up to 7 or 30 I O blocks If you are using a 5 01 processor the scanner can only be configured for the 7 I O block configuration Using a 5 02 processor allows you to configure the scanner for the 7 or 30 I O block configuration The scanner cannot be used with SLC 500 Fixed Hardware systems Chapter 2 Wiring and Installation Wiring the DIO Link The scanner and I O blocks are connected to the DIO Link in a daisy chain configuration A daisy chain configuration is formed by connecting the scanner and I O blocks together in a serial manner along a single section of link cable Belden 9463 The scanner is attached to the DIO Link using its 3 position DIO Link connector and the I O blocks are attached to the DIO Link using 3 terminals on their 6 position DIO connector There are no restrictions governing the spacing between each device as long as the overall length of the DIO Link does not exceed 2 500 feet However no two devices may be connected to the same point on the DIO Link 82 ohm terminating r
20. f scans before the SLC processor reads the scanner s input file The figure shown below illustrates the asynchronous operation of the SLC processor and scanner U SLC Processor Scan f Scanner Scan Scanner Input File SLC Input File Output 3 Input 1 The scanner updates its input file each time it scans an I O block The scanner may scan all three of its Output 1 configured I O blocks many times before the SLC Processor reads the scanner s input file The SLC processor reads the scanner input file into the SLC input Output loput file processes itand creates an SLC output file The SLC output file is transferred to the scanner during the output scan Input 3 Output 2 Input 2 Program ae Scanner Output File SLC Output File SLC Processor Scanner VO block 3 VO block 1 VO block 2 1 4 Scanner Configurations Scanner Baud Rate I O Block Addressing Chapter 1 Introduction The scanner can be configured for two different modes of operation These modes or configurations are referred to as 7 and 30 I O block configurations When the scanner is configured for a 7 I O block configuration the scanner addresses up to seven I O blocks The SLC 5 01 and 5 02 processors support the 7 I O block configuration When the scanner is configured for a 30 I O block configuration the scanner addresses up to 30 I O blocks The SLC 5 02 processor supports the 30 I O block configuration
21. in male connector connects the scanner to the DIO Link The Allen Bradley repair part number is W22112 046 03 Chassis Ground Terminal The chassis ground terminal provides a convenient location for grounding the DIO cable shield The cable shield should be connected to chassis ground at one point on the DIO Link 1 3 Chapter 1 Introduction How the Scanner Interacts The SLC processor scan consists of an input program and output scan with the SLC Processor During the input scan the scanner input file which contains the on off input status of all configured I O blocks is read into SLC processor memory During the SLC program scan the input information is used by your application program An SLC output file based on the logic of your program is then written to the scanner during the output scan The scanner s scan consists of reading and writing data to all I O blocks For example if three I O blocks are attached the scan consists of three read write cycles The SLC processor scan and the scanner scan operate asynchronously or independent of each other The SLC processor reads the scanner input file during its input scan and writes the output file to the scanner during the output scan The scanner continues reading inputs and writing outputs to the scanner input file independently of the SLC processor scan Depending on your network and application program size it is not uncommon for the scanner to complete a number o
22. in the Communication Status Word s indicate whether or not the scanner is communicating with each of the configured I O blocks Each bit in the Communication Status Word s corresponds to an I O block If the scanner is communicating with an I O block the corresponding bit in the Communication Status Word is set to 1 The bits in the Communication Status Word s can be used to ensure that the I O block s are communicating with the scanner before any input data from the I O block s is used by the SLC processor program e have the SLC processor set an alarm or take appropriate action if communication with an I O block s is lost In addition to the Communication Status Bits for each individual I O block the 30 I O block Configuration has an Overall Communication Status Bit bit 0 of word 0 This bit is set to 1 when all of the configured I O blocks are communicating with the scanner For example if the scanner is configured for 4 I O blocks the Overall Communication Status bit will be 1 when all four I O blocks are communicating It will be set to 0 if any one of the I O blocks is not communicating By monitoring this bit the SLC processor can quickly determine if communication with any configured I O block has been lost The application example on page 3 11 illustrates a use of the Communication Status Word The Control Word operates the same in both the 7 and 30 I O block Configurations It is used to e configure the scanner
23. lock you should only connect the shield to chassis ground in one place If you choose to ground the shields using Chassis Grounding Method 1 shown here do notuse Chassis Grounding Method 2 shown on page 2 5 Chapter 2 Wiring and Installation Wiring the DH 485 Data The DH 485 Data Link allows a programming device to communicate with Link the SLC processor Each I O block has a programming port that allows a programming device to be connected to the DH 485 Data Link The Isolated Coupler and I O blocks are connected to the DH 485 Data Link in a daisy chain configuration A daisy chain configuration is formed by connecting the Isolated Coupler and I O blocks together in a serial manner along a single section of link cable Belden 9842 There are no restrictions governing the spacing between each device as long as the overall length of the DH 485 Data Link does not exceed 4 000 feet However no two devices may be connected to the same point on the DH 485 Data Link Termination must be provided at each end of the link The I O blocks and Isolated Couplers have internal resistors for this purpose Programming Last device A Device HHT Correct terminates E Last device must a Ty be terminated Isolated Link NE Coupler a D 1747 C11 I Communication 7 Cable a Bel 42 Incorrect elden 9842 347 010 Last device must be Communication Cable terminated Last device A terminated x lt p a ED SZ Sarge Se tel
24. mber 1747 PA2E The HHT or APS is used to program and monitor the SLC processor Refers to any SLC 500 Modular Rack Catalog Numbers 1746 A4 A7 A10 and A13 The SLC processor and I O modules are installed in the SLC Rack Refers to the Catalog Number 1747 DSN Distributed I O scanner module Refers to both the SLC 5 01 and 5 02 modular processors The SLC processor controls the I O modules in the SLC Rack including the scanner Warnings and Cautions Preface Both warnings and cautions are used in this manual WARNING This symbol means people can be injured if pro cedures are not followed followed CAUTION This symbol means equipment can be damaged if procedures are not followed CAUTION This means there is a potential shock hazard and equipment can be damaged if procedures are not followed WARNING This symbol means there is a potential shock hazard and people can be injured if procedures are not P 3 Chapter Objectives DIO System Overview Chapter Introduction This chapter contains the following information e DIO system overview e DIO Link overview e DH 485 Data Link overview e how the scanner interacts with the SLC processor e scanner features Important Use the DIO scanner in any SLC 500 Modular Hardware system The scanner cannot be used in SLC 500 Fixed Hardware systems The DIO system consists of an SLC processor a scanner an Isolated Coupler and I O blocks These de
25. munication Reserved status for I O blocks 17 31 VO block 17 Input Word 17 l e 17 T Bits 8 and 9 are only available to I O blocks with 10 inputs VO block 31 Input Word 31 l e 31 The input word for each I O block is placed in the word corresponding to the I O block address The bits of each input word correspond to the inputs on the I O block For example input 5 of I O block 31 is located in bit 5 of input word 31 e slot number of the SLC rack containing the scanner 3 7 Chapter 3 Configuration and Programming 3 8 30 I O Block Configuration Output Image The 30 I O block configuration output image consists of 32 words one control word one reserved word and 30 output words Each output word has a corresponding I O block address For example the output data for I O block 31 there is no I O block 16 is located in output word 31 In addition the bits of each output word correspond to the outputs on the I O block For example e For I O blocks with 6 outputs bits 0 5 are valid e For I O blocks with 8 outputs bits 0 7 are valid Control Word Word 0 The Control Word controls the following three functions Number of I O blocks bits 0 4 configure the scanner for the number of I O blocks physically connected to the scanner I O blocks must be numbered consecutively starting with one They do not have to be wired in a contiguous order e The maximum number of I O blocks you can configure is 30 A
26. nd seven input words Each input word corresponds to an I O block address For example the input data for I O block 7 is located in input word 7 In addition the bits of each input word correspond to the inputs on the I O block For example e For I O blocks with 8 inputs bits 0 7 are valid e For I O blocks with 10 inputs bits 0 9 are valid Communication Status Word 0 these bits reflect the communication status of each I O block e Bit 0 is reserved e Bits 1 through 7 provide individual communications status for each respective I O block When communications to an I O block is lost the bit corresponding to the I O block will be 0 Upon start up these bits will be 0 until communications has been established with each I O block e Bits 8 through 15 always equal 0 7 I O Block Configuration Input Image Example Bits8 15always Bits 8and9 are only Bits 1 7 I O block Reserved equal 0 available to I O communication Status blocks for VO blocks 1 7 with 10 inputs 0 Offline Bit Number decimal 15 14N 13 12 11 Input File N 9 8 7 6 N 4 3 2 1 0 VO block Communication Status Word 0 E l e 0 VO block 1 Input Word 1 l e 1 VO block 6 Input Word 6 l e 6 VO block 7 Input Word 7 l e 7 The input word for each I O block is placed in the word corresponding to the I O block address The bits of each input word correspond to the inputs on the I O block For example input 5 of VO block 7 is located in bit 5 of input
27. nelView and RediPANEL are registered trademarks of Allen Bradley Company Inc Preface Introduction Wiring and Installation Configuration and Programming Table of Contents Distributed I O Scanner Using this Manual Purpose of this Manual satan aa E a E RANE A S P 1 Contents of this Manual 0 0 0 0 eee ee ee eee P 1 Related Publications oreari ddia a Aa eee nee P 2 Intended Audience 0 0 ienei eee ete eens P 2 Conventions i cee eee i E a ETa bee ee es P 2 Warnings and Cautions 0 cece eee eee P 3 Chapter 1 Chapter ODJeCtIyES 53243 nienn aio sled k a iie ha a ae 1 1 DIO System Overview draaie eeraa cece ee eee eee ences 1 1 DIO Link Overview e ar oep ennnen be Lhe hee eS be 1 2 DH 485 Data Link Overview 0 0 cee eee ee eee 1 2 DIO Scanner Features o sanii 00 0 an ee eee eee ees 1 3 PDD Si tg sinde seine ac en Sate ae ad Rae eee eae rr nay cued 1 3 DIO Eink Connector sort aie bai he Hee a S 1 3 Chassis Ground Terminal 0 0 0 0 c eee eee eee ee 1 3 How the Scanner Interacts with the SLC Processor 1 4 Scanner Configurations 00 0 eee eee eee eee ee 1 5 Scanner Baud Rate 0 0 2 eee eee ee eee eens 1 5 VO Block Addressing 2 0 50 c ea cee eke eee bere ees 1 5 Chapter 2 Chapter Objectives si cst nee taa oaen Oe ete ee ese S ae tae 2 1 Determining Block Requirements 0 0 e cece eee 2 1 Determining Scanner and SLC Processo
28. ny number larger than 30 causes configuration error XX62 in the SLC 5 02 and xx58 in the SLC 5 01 e When bits 0 4 equal 0 the system defaults to 30 I O blocks the maximum number of I O blocks this configuration allows e Configure the scanner for the number of I O blocks connected If you configure it for more I O blocks than what you have connected you will waste throughput time trying to scan I O blocks that do not exist on the link If you configure it for fewer I O blocks than you have connected the scanner will not communicate with I O blocks which have higher address numbers than the number of configured I O blocks Disable Outputs When bit 9 is set and the SLC processor is in run mode the scanner disables all outputs on all I O blocks Whether the disabled outputs are reset to 0 or held in their last state depends on the Hold Last State dip switch setting located on each I O block e If bit 9 is set and the Hold Last State function is disabled the outputs will be reset to 0 e If bit 9 is set and the Hold Last State function is enabled the outputs are held in their last state Important The Disable Outputs bit is constantly monitored by the scanner when the SLC processor is in run mode Chapter 3 Configuration and Programming Configuration Data Valid Bit Bit 10 of the Control Word word 0 must be set after bits 0 4 Number of I O blocks are valid When this bit is first set to 1 from run mode bits
29. of its outputs whenever e the Output Disable Bit in the Output Control Word is set to 1 and the SLC processor is in run mode e the I O blocks and scanner lose communication e g broken cable For details on I O block Hold Last State operation consult the I O block User Manual WARNING Use of the Hold Last State switch can result in outputs remaining energized when not under the control of the SLC processor We recommend the use of this function only by experienced SLC programmers 4 5 Chapter 4 Operation and Troubleshooting Status LEDs The scanner has two LEDs that indicate its operating status FAULT and COMM The FAULT LED indicates the scanner s overall status The COMM LED indicates the DIO Link communications status The FAULT LED is off whenever the scanner is operating properly The COMM LBD state is valid only when the FAULT LED is off The table below provides the scanner and communications status as indicated by the FAULT and COMM LEDs FAULTLED COMMLED Status Information Flashing Red Don t care Scanner configuration error No network communication attempted Duplicate scanner detected on network Solid Red Donttcare Major fault on scanner No network communication attempted Of TSolidRed Hardware fault detected Off Scanner is operating properly Scanner is offline no network communication attempted Off Solid Green Scanner is operating properly Scanner is online active comm
30. ol Word Word 0 O e 0 VO block 1 Output Word 1 x O e 1 Output bits VO block 6 Output Word 6 JA Ve 47 O e 6 VO block 7 Output Yer O e 7 Reserved Bits 6 and 7are only available to I O blocks The output word for each I O block is placed in the word with 8 outputs corresponding to the I O block address The bits of each output word correspond to the outputs on the I O block For example bit 5 of output word 7 controls output 5 of VO block 7 e slot number of the SLC rack containing the scanner Control Word Configuration Information Configurable Item Result Number of I O Blocks jf 00001 to 00111 1 71 0 blocks i 0 Outputs enabled Disable Outputs 1 Outputs disabled 0 Invalid Configuration Data Valid 1 Valid 00000 configures the scanner for 7 1 0 blocks Scanner detects rising edge 3 5 Chapter 3 Configuration and Programming 30 I O Block Configuration Input Image The 30 I O block configuration input image consists of 32 words two communication status words and 30 input words Each input word has a corresponding I O block address For example the input data for I O block 31 there is no I O block 16 is located in input word 31 In addition the bits of each input word correspond to the inputs on the I O block For example e For I O blocks with 8 inputs bits 0 7 are valid e For I O blocks with 10 inputs bits 0 9 are valid Communication Status Words words 0 and 16 these bits reflect
31. or and changes can be made to the SLC processor output image even though they will not be sent to the scanner or I O blocks If power on the SLC Rack is cycled when the slot is disabled the scanner will no longer communicate on the DIO Link and the I O block outputs will be reset to 0 The SLC processor input image will reflect the state of the scanner inputs when the slot was originally disabled When the slot is re enabled the inputs from the scanner to the SLC proces sor will reflect the current state of the I O block inputs and the current state of the SLC processor output image will be sent to the scanner and the I O blocks When communication between the scanner and I O block s is lost e the bits in the Communication Status Word for the non communicating I O block s are reset to 0 e the I O block s input image found in the scanner and SLC processor remains at the last state read from the I O blocks before communications was lost e the entire SLC processor output image continues to be transferred to the scanner however outputs will not be sent to non communicating I O blocks When communications is restored e the corresponding bits in the Communication Status Word are set to 1 e the current information in the SLC processor and scanner output image is sent to the I O block s e the current state of the I O block s inputs is sent to the scanner and SLC processor To determine the operation of the I O blocks
32. r Requirements 2 1 Wiring the DIO Link cecinisse cioty oE eee eee 2 2 Wiring the DH 485 Data Link 0 0 0 0 eee eee eee 2 4 Scanner Installation 2 2 ee eee eee 2 6 Chapter 3 Chapter Objectives r Fred tebe Bie we Hiei od aed whales 3 1 SLC Processor Configuration 0 0 0 cece eee eee eee 3 2 Pro STAMIMIN Gs ars don shh a awn oak ea adi ad ene tossed acne 4 3 2 SLC Processor Input and Output Images 00 4 3 3 7 I O Block Configuration Input Image 3 3 7 I O Block Configuration Input Image Example 3 3 7 V O Block Configuration Output Image 3 4 Control Word Word 0 2 0 2 0c cent ee 3 4 7 I O Block Configuration Output Image Example 3 5 Control Word Configuration Information 3 5 30 I O Block Configuration Input Image 3 6 Table of Contents Distributed O Scanner Operation and Troubleshooting Specifications 30 I O Block Configuration Input Image Example 3 7 30 I O Block Configuration Output Image 3 8 Control Word Word 0 egia oneri ES le see boede 3 8 30 I O Block Configuration Output Image Example 3 9 Control Word Configuration Information 3 9 Use of the Communication Status Words 004 3 10 Use of the Control Word 0 0 cece cee eee 3 10 Application
33. ssor is in the run mode the scanner s LEDs are in the following states e the FAULT LED is off e the COMM LED is solid green Important This assumes the scanner is configured properly and all configured I O blocks are communicating Chapter 4 Operation and Troubleshooting Normal Operation During normal operation the LEDs are illuminated as shown below FAULT LED is off COMM LED is solid green When the SLC processor is taken out of run mode the COMM LED remains solid green The inputs of the blocks connected to the scanner are still read However I O block outputs are set to 0 disabled 4 2 Scanner Slot Disable Operation Loss of Communications Chapter 4 Operation and Troubleshooting CAUTION Make sure that you clearly understand the implications of disabling a scanner module slot before utilizing this feature The scanner slot disable operation is the same in the 7 I O and 30 I O block configurations When the scanner s slot is disabled by the SLC processor the SLC proces sor outputs will no longer be sent to the scanner or to the I O blocks and the scanner inputs or I O block inputs will no longer be sent to the SLC processor The SLC processor input image and the outputs sent to the I O blocks by the scanner will be held in the state that they were when the slot was disabled The scanner will continue to collect inputs from the I O blocks even though they are not sent to the SLC process
34. the communication status of each I O block e Bit 0 of word 0 provides the communication status of all 30 I O blocks When communications with one or more I O block is lost this bit equals 0 Upon start up this bit will be 0 until communications has been established with all configured I O blocks e Bits 1 through 15 of word 0 provide individual communications status for the first 15 I O blocks words 1 15 When communications with an I O block is lost the corresponding bit equals 0 Upon start up these bits will be 0 until communications has been established with each corresponding I O block e Bit 0 of word 16 is reserved e Bits 1 through 15 of word 16 provide individual communications status for the remaining 15 I O blocks words 17 31 When communications with an I O block is lost the corresponding bit equals 0 Upon start up these bits will be 0 until communications has been established with each corresponding I O block 3 6 Chapter 3 Configuration and Programming 30 I O Block Configuration Input Image Example Bits 1 15 I O block communication Bit 0 Overall communication status for status for I O blocks 1 15 VO blocks 1 15 and 17 31 Bit Number decimal 15 14 13 12 11 10 g 8 7 6 5 4 3 2 1 0 Input File VO block Communication Status Word 0 l e 0 VO block 1 Input Word 1 SEER l e 1 Reserved l e 16 Communication status for VO blocks 17 31 Word 16 Bits 1 15 I O block com
35. ty 5 to 95 without condensation Noise Immunity NEMA Standard ICS 2 230 Processor Type SLC 5 01 or above Scanners cannot be used with SLC 500 Fixed System Network Specifications F Maximum Cable Terminating Resistor 230 4 KBaud 750 meters 2 500 feet 82 ohm DH 485 Data Link Baud Maximum Cable Terminating Resistor Rate Distance Size 19 2 KBaud 1900 meters 4 000 feet 120 ohm internal A ROCKWELL INTERNATIONAL COMPANY Allen Bradley meets today s automation challenges with over 85 years of practical plant floor AB A L L E N B R AD L E Y A subsidiary of Rockwell International one of the world s largest technology companies uy experience More than 12 000 employees throughout the world design manufacture and apply a wide range of control and automation products and supporting services to help our customers continuously improve quality productivity and time to market These products and services not only control individual machines but also integrate the manufacturing process while providing access to vital plant floor data that can be used to support decision making throughout the enterprise With offices in major cities worldwide WORLD HEADQUARTERS EUROPE MIDDLE EAST ASIA PACIFIC HEADQUARTERS CANADA HEADQUARTERS Allen Bradley AFRICA HEADQUARTERS Allen Bradley Hong Kong Limited Allen Bradley Canada Limited 1201 South Second Street Allen Bradley Europe B V Room 1006 Block B Sea View Estate 135 Dundas Street Mil
36. umping water into the water tower When the proper level is achieved the switch opens and the pump stops ACME Water Towers Milwaukee Wisconsin o2 D Float Switch Input to I O block Output to motor starter that starts pump Chapter 3 Configuration and Programming Programming Example Using 7 I O block Configuration In the following programming example the first rung is used to initiate the DIO system using the Output Control Word The scanner is located in slot 1 and an alarm is connected to a discrete I O card in slot 2 When the water level drops the switch closes and the pump starts pumping water into the tower The Communications Status Bit for I O block 1 is used to ensure that input data from the I O block is valid before the pump can be turned on rung 5 It is also used to turn on the alarm if communication with the I O block is lost for more than 6 seconds rungs 3 and 4 Integer file N7 01 sets the bits for Number of I O Blocks rung 1 By setting these bits in this manner you can change the number of I O blocks for which the scanner is configured by entering the program mode changing N7 01 and re entering the run mode S l MVM Rung 1 Jof MOVE 15 Source N7 01 First bit Mask 1F Mapaana Dest 0 1 00 Configuration 0 1 0 Data Valid bit L 10 Disable Outputs O10 HT bit uy _ 9 Turns alarm off S l 0 2 0 Rung 2 U AA 1
37. unication established with all 1 0 blocks Off Flashing Green Scanner is operating properly Atleast one configured 1 0 block is not communicating Off Flashing Red Scanner is operating properly None of the configured I O blocks are communicating 4 6 Chapter 4 Operation and Troubleshooting Trou bleshooting When the scanner s LEDs change state use the following table to isolate the cause COMM FAULT LED Problem Solution ee Condition CANN A FAULT LED Configured for an invalid Modify DIO initialization rung in SLC o o flashing red number of I O blocks program to reflect the correct number of 1 0 blocks FAULT LED Duplicate scanner detected Disconnect DIO Link from scanner and solid red or hardware error on scanner cycle scanner power If the FAULT LED is off look for another scanner on the network If the condition persists replace the scanner co Configuration Data Valid bit Adda rung to the SLC program that off not set in output image sets the Configuration Data Valid bit control word 0 e 0 after communications is established co An 1 0 block is not properly Find the 1 0 block with the COMM LED flashi configured connected off Check the DIO Link connections powered or is faulted power and switch settings COMM LE Scanner is incorrectly Check DIO Link wiring at scanner flashing red connected or all I O blocks Check 1 0 block configuration and are incorrectly
38. used slots with the Card Slot Filler Catalog Number 1746 N2 KANN NWA WMA MAS SAS i wssn SHES SQA Wy we SOX y DN 2 6 Chapter Objectives Chapter Configuration and Programming This chapter contains the information necessary to e configure the SLC processor for use with the scanner e access the I O block data in the SLC processor input and output files e configure the scanner for the correct number of I O blocks e disable the I O block outputs e monitor the communication status of the DIO Link Chapter 3 Configuration and Programming SLC Processor Configuration 3 2 The scanner can be configured to communicate with a maximum of 7 or 30 I O blocks The 7 or 30 I O block configuration is determined by the ID code that is entered when programming the SLC processor SLC 5 01 processors can only use the 7 I O block configuration SLC 5 02 processors can use either the 7 or 30 I O block configuration Programming Your SLC processor can be programmed with an HHT Hand Held Terminal or APS Advanced Programming Software Although the configuration steps are similar they are not identical Therefore the following basic steps are provided For specific instructions refer to the user s manual included with your programming device 1 Locate an open slot in your rack 2 Assign the scanner to the slot by selecting OTHER from the I O Configuration Screen
39. vices form the DIO System when they are properly connected to the DIO Link and the DH 485 Data Link as shown below The DIO Link and the DH 485 Data Link are independent networks The DIO Link consists of the scanner and I O blocks It enables the SLC processor to exchange input and output information with up to 30 I O blocks Output data is transferred from the SLC processor to the scanner which then transmits the data to the appropriate I O block via the DIO Link The scanner receives input data from the I O blocks via the DIO Link The scanner then provides this data to the SLC processor The maximum length of the DIO Link is 2 500 feet 762 meters using Belden 9463 cable The SLC processor and programming devices communicate using the DH 485 Data Link The DH 485 port located on each I O block allows remote programming and or monitoring of the SLC processor It does not directly control the I O block Connecting a programming device to any I O block programming port allows the programming device to communicate with the SLC processor The maximum length of the DH 485 Data Link is 4 000 feet 1 219 meters using Belden 9842 cable SLC Processor Scanner ry ry Programming Device HHT VO blocks N DH 485 Data Link Chapter 1 Introduction DIO Link Overview DH 485 Data Link Overview 1 2 The DIO Link is an Allen Bradley communications network supporting high speed transfer of control information A D
40. waukee WI 53204 USA Amsterdamseweg 15 2 8 Watson Road Cambridge Ontario N1R 5X1 Tel 1 414 382 2000 1422 AC Uithoorn Hong Kong Canada Telex 43 11 016 The Netherlands Tel 852 887 4788 Tel 1 519 623 1810 Fax 1 414 382 4444 Tel 31 2975 43500 Telex 780 64347 FAX 1 519 623 8930 Telex 844 18042 FAX 852 510 9436 Fax 31 2975 60222 Catalog Number 1747 NM004 Series A October 1991 LATIN AMERICA HEADQUARTERS Allen Bradley 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Telex 43 11 016 FAX 1 414 382 2400 40063 103 01 A amp 1991 Allen Bradley Company Inc
41. word 7 e slot number of the SLC rack containing the scanner 3 3 Chapter 3 Configuration and Programming 3 4 7 1 0 Block Configuration Output Image The 7 I O block Configuration Output Image consists of eight words one control word and seven output words Each output word corresponds to an I O block address For example the output data for I O block 7 is located in output word 7 In addition the bits of each output word correspond to the outputs on the I O block For example e For I O blocks with 6 outputs bits 0 5 are valid e For I O blocks with 8 outputs bits 0 7 are valid Control Word Word 0 The control word controls the following three functions Number of I O Blocks bits 0 4 configure the scanner for the number of I O blocks physically connected to the scanner I O blocks must be numbered consecutively starting with one They do not have to be wired in a contiguous order e The maximum number of I O blocks you can configure is 7 Any number larger than 7 causes configuration error xx62 in SLC 5 02 and xx58 in SLC 5 01 e When bits 0 4 equal 0 the system defaults to 7 the maximum number of I O blocks allowed for this configuration e Configure the scanner for the number of I O blocks connected If you configure it for more I O blocks than what you have connected you will waste throughput time trying to scan I O blocks that do not exist on the link If you configure it for fewer I
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