QK1402/MB User's Guide
Contents
1. EXXX X contents will be used by the function SXXX X YKMxxxxx Modbus address of the first point in the slave equipment to be written The coils are numbered from address 0 this corresponds to the coil number 1 according to MODBUS standard KMxxxxx Number of points of the slave equipment whose contents will be written Range 1 lt points lt 240 DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 14 Parameters for Modbus Function 15 Chapter 2 Programming Function 16 Preset Multiple Registers Allows the user to write on 16 bit holding registers of the addressed slave equipment or of all network slaves by means of a broadcast message address 00 Parameter RXXX Y KMXXXXX Bus address where the QK1402 MB card is housed Address of the slave equipment to which communication is transmitted Range 0 lt address lt 255 KM 00016 Type of Modbus function of this communication MXXXX TMxxx KMXxxXXXX Y KMXXXXX Dxxxx Address of the first memory operand or memory table initial position 0 that will be used by this function Modbus address of the first holding register in the slave equipment to be modified The holding registers are numbered from address 0 this corresponds to the holding register number 40001 according to MODBUS standard Number of registers of the slave equipment whose co2. processes the data MasterTool ALTUS program for a standard IBM PC microcomputer or compatible used ina WINDOWS environment which allows the development of program modules for the PCs in the PICCOLO AL 2000 AL 3000 and QUARK series Throughout the guide this program will be referred to by its acronym or as MasterTool programmer MT4000 or MT4100 MT4000 can be used in Windows 3 1x 95 and 98 MT4100 can be used in Windows NT or 2000 Other expressions can be found in appendix A Glossary xiii Preface Utilized Conventions Xiv The utilized symbols throughout this guide have the following meanings e This mark indicates a list of items or topics SMALL CAPS indicate names of keys for example ENTER KEY1 KEY2 is used for keys to be pressed simultaneously For example the simultaneous typing of the CTRL and END keys is indicated as CTRL END KEY1 KEY2 is used for keys to be pressed sequentially For example a message Type ALT F10 means that the ALT key should be pressed and released and then the F10 key pressed and released LARGE CAPS indicate names of files and directories Italics indicate words and characters that are typed on the keyboard or seen on the screen For example if you are asked to type PHOTON these characters should be typed exactly as the appear in the guide BOLD is used for names of commands or options or to emphasize important parts of the text Warning messages present the foll
3. CTS DSR and DTR pins although present are not actually used by the QK1402 MB Chapter 3 Installation Installation in the PC Bus The installation of the QK1402 interface is made on the mounting rail QK1500 along with the PC CPU or QK2512 power supply and the other I O modules The module has a slot at the rear which allows inserting it in the rail in the electrical cabinet For further information on how to insert and remove the module from the rail check the QUARK CPUs User s Guide Before inserting the module in the rail the address in the PC bus must be defined by means of the existing jumpers S1 which can be accessed through a lateral opening on the box The module address must be the same one configured in the application program through MASTERTOOL or AL 3830 Programmers in their bus declaration see Programmer User s Guide After defining the address the module is inserted into the bus and connected to the communications cable with the CPU flat cable QK1304 QK1308 QK1312 or QK1316 For further information on the module address and connection to the bus check the QK2000 MSP CPU user s guide It is possible to use more than one QK1402 MB module in a single CPU bus provided they are properly configured and programmed ladder program and have an independent Modbus communication two RS 485 networks for example Network Communication General Information The installation of a communication network mu
4. KM 00000 no parity KM 00001 odd parity KM 00002 even parity KMxxxxx Memory constant that defines the number of stop bits of the character to be used in the communication KM 00001 one stop bit KM 00002 two stop bits KMxxxxx Memory constant that defines the communications time out in hundredths of a second The values between 1 and 254 are valid for this memory constant OPER4 Not used Chapter 2 Programming Communication Parameters The CHF instruction cells used for the function call in the COMMUNICATION mode are programmed as follows OPER 1 Specifies the number of parameters that are passed to the function in OPER3 This operand must be a memory constant with value 7 KM 00007 OPER2 Must be a memory constant operand with value 0 KM 00000 Specifies the number of parameters allowed to be programmed in the edit window of OPER4 As this function requires no parameters in OPER4 the value of OPER is 0 OPER3 Contains the parameters that are passed to the function They are declared in an edit window when the CHF instruction is edited The number of editable parameters is specified in OPER1 being fixed at 7for this module Rxxx Bus address where the QK1402 MB is housed KMxxxxx Memory constant that defines the address of the slave equipment to which the communication is transmitted Values between 0 and 255 are valid 0 for broadcast messages KMxxxxx Memory constant that
5. YKMxxxxx Number of points of the slave equipment to be read Range 1 lt number of points lt 240 DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 4 Parameters for Modbus Function 01 Chapter 2 Programming Function 02 Read Input Status Allows the user to read the logic status on off of input status from the addressed slave equipment This function does not support broadcast communication Parameter YRXXX KMXXXXX Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 KM 00002 Type of Modbus function of this communication YoAXXX X First subdivision of PC operand from which PC operands YEXXX X will be updated YoSXXX X KMxxxxx Modbus address of first point in the slave equipment to be read The inputs are numbered from address 0 this corresponds to the input status number 10001 according to Modbus standard YKMxxxxx Number of points of the slave equipment whose contents will be read Range 1 lt number of points lt 240 DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 5 Parameters for Modbus Function 02 2 11 Chapter 2 Programming Function 03 Read Holding Registers Allows the user to read 16 bit holding registers from the addressed slave equipment This function d
6. defines the Modbus function for this communication This memory constant may have the following values functions KM 00001 Function 01 Read Coil Status KM 00002 Function 02 Read Input Status KM 00003 Function 03 Read Holding Registers KM 00004 Function 04 Read Input Registers KM 00005 Function 05 Force Single Coil KM 00006 Function 06 Preset Single Register KM 00007 Function 07 Read Exception Status KM 00008 Function 08 Diagnostics KM 00011 Function 11 Fetch Communications Event Counter KM 00012 Function 12 Fetch Communications Event Log KM 00015 Function 15 Force Multiple Coils KM 00016 Function 16 Preset Multiple Registers KM 00017 Function 17 Report Slave Id JoAXXX YOEXXX SXXX TOMxxxx TMxxx ou KMxxxxx First PC operand source destination of communication of the QK1402 MB module with the slave equipment whose content will be copied or updated by the function Its type depends on the function type defined by the third parameter KMxxxxx Memory constant that defines the Modbus address at the first point operand in the slave equipment Chapter 2 Programming KMxxxxx Memory constant that defines the number of slave equipment operands and consequently of the master equipment associated with this communication call Dxxxx Decimal operand used by the function for the internal control of its processing and for status indications of the function A d
7. for such determination which can be used to analyze and correct problems Execution Modules Module E Modules that contain the application program They can be of three types E000 E001 and E018 Module E000 is executed one single time when the PC is energized or in the switch from programming to execution mode Module E001 contains the main segment of the program that runs cyclically while module E018 is activated by time interruption Executive Program Operating system of a programmable controller It controls the basic controller functions and the execution of application programs Executive Software A PC operating system It controls the basic functions of the programmable controller and the execution of application programs Frame Information unit transmitted over the network Function Module Modulo F Module of a PC program that is called by the main module module E or by another function module or procedure with transfer of parameters and return of values working as a sub routine Hardware Physical devices used in data processing where programs software are normally run T O Module Module belonging to the I O subsystem Instruction Operation to be executed on a group of operands in a program Interface Device that adapts the transfer of signals between two devices electrically and or logically Interruption Priority event that temporarily suspends the execution of a program The interruptions can be di
8. may then process its communication or configuration Description of outputs Success It is energized during a scan cycle when the function receives a valid response from the slave equipment or when the QK1402 MB has carried out a successful configuration The least significant byte of the control operand D returns an indicative code Exec Error It is energized during a scan cycle at the end of the communication processing period if the destination slave equipment does not respond to the transmitted command time out or 1f its response contains errors or if the QK1402 MB module is not configured or does not respond In these cases the least significant byte of the control operand D receives a code 2 5 2 6 Chapter 2 Programming indicating the nature of the error and the programmed communication is not performed This output may only be energized in communication calls Prog Error It is energized if there is an error in the specification of CHF operands or if there is an attempt to access non declared operands Control Operand The following information is stored in the D operand that controls the function function status code diagnostic code error or success or amount of data bytes expected as response from the Modbus slave address of the slave equipment and Modbus function number Each one of them uses one byte and they are distributed in the D operand as follows Diagnostic or Function status Amount of byt
9. QK1402 MB User s Guide Ref 6299 602 9 Rev A 01 2003 General Conditions No part of this document may be copied or reproduced in any way without the previous written consent of ALTUS S A which reserves the right to change this manual without prior notice In compliance with the Brazilian Consumer Protection Code please be aware of the following issues related to personal security as well as installation in customer s premises The industrial automation equipment manufactured by ALTUS is robust and reliable due to a rigid quality control program However electronic equipment for industrial control programmable controllers numeric controls etc can cause damage to machinery or processes controlled by them in the case of a part defect and programming or installation errors and may even cause death The user should analyze the possible consequences of these defects and add security safeguards to protect system security mainly in cases of initial installation and tests when problems are more likely to happen The user should thoroughly read the user s guides and or Technical Features before installation and use ALTUS guarantees its equipment from manufacturer defects for twelve months from the date of invoice ALTUS provides this guarantee from its manufacturing facility in S o Leopoldo RS Brazil The client is fully responsible for all the expenses and risks incurred on shipping products to and from that facility This guarantee
10. ctive for different Modbus functions and different slaves This situation determines that as soon as a function call is over the next call be immediately carried out and so forth PC BUS A CPU QK1402 MB yo EXECUTION EXECUTES QK1402 MB E001 v _ gt CHF e F 1402MB 031 vy a vi 3 SERIAL INTERFACE Figure 2 2 Operation structure Function Operating Sequence A communications operation follows these steps 2 24 Chapter 2 Programming e Scan Cycle 1 As the enable and communicate input are activated the data related to the communication to be established address of slave equipment Modbus function Modbus address etc are passed to the QK1402 MB module The function terminates execution and returns to the user s ladder application The QK1402 MB module produces the configured Modbus command and transmits 1t e Scan Cycle 2 to n Awaiting response from slave equipment The function consults the operating status which is updated Situation A in the Execution Time of F 1402MB 031 Function table During the cycles subsequent to the initial one 1 the QK1402 MB ends the serial transmission and awaits the response from the addressed slave equipment In this situation the awaiting response status is successively returned to the CPU The QK1402 keeps awaiting the response f
11. d on the cover A change in revision can mean alterations in the functional specification or user s guide improvements The following report lists the corresponding alterations to every revision of this guide 11 2002 xvii Chapter 1 Master Modbus Serial Interface Master Modbus Serial Interface The QK1402 MB allows the user to develop applications in ladder language and to read and write in slave equipment by means of the Modbus protocol making the QUARK line controllers QK2000 QK800 and QK801 communications network masters The product consists of the following modules e QK1402 MB hardware module e F 1402MB 031 software module The QK1402 MB serial interface when connected to the I O bus of the PC makes an RS 485 serial channel available allowing the connection of the PC with a Modbus communications network as shown in Figure 1 1 Alternatively the RS 232C serial channel available in the QK1402 MB can be used for point to point connections with a Modbus slave equipment Only one of these channels either RS 485 or RS 232 may be used at a single time Both cannot be used simultaneously 1 2 Chapter 1 Master Modbus Serial Interface Serial Interface Q CAN 2 RS 485 RS 232 90009 09000 00000 00000 K1402 00110701B Figure 1 1 QK1402 MB The F 1402MB 031 function module called by the application developed in ladd
12. diagnostics 30 and 31 the Success output is activated For the other diagnostics the EXEC Error is activated The address bytes of the slave equipment address and the bytes of the Modbus function number are for exclusive use and internal control of the communication function Chapter 2 Programming Implemented Modbus Functions The Modbus protocol created by Gould Modicon defines a series of functions for reading status and values and for writing status and values and for testing the communication network and slave equipment Reading and writing operations use continuous sequential operand ranges The following is a description of each of the functions implemented in the F 1402MB 031 function with their respective parameters and limits for their calls 2 10 Chapter 2 Programming Function 01 Read Coil Status Allows the user to read the logical status on off of output control relays coils from the addressed slave equipment Does not support broadcast communication KMxxxxx Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 KM 00001 Type of Modbus function of this communication YoAXXX X First subdivision of PC operand from which PC operands YEXXX X will be updated YoSXXX X YKMXXXXX Modbus address of first point in the slave equipment to be read The relays are numbered from address 0 this corresponds to the coil number 1 according to Modbus standard
13. er language allows the user to configure module QK1402 MB and then develop communications with slave equipment units connected to the network by means of the Modbus protocol The QK1402 MB can only be used with QK2000 QK800 and QK801 CPUs For AL 2002 and AL 2003 CPU models Modbus RTU communication is supported with the use of AL 2005 Chapter 1 Master Modbus Serial Interface coprocessor module s and AL 2734 Modbus Master Slave Communications Drivers CP QK1402 MB MODBUS MASTER MODBUS MODBUS SLAVE SLAVE Figure 1 2 Modbus Communication Network The F 1402MB 031 function module must run in QK2000 QK800 or QK801 programmable controllers with software version 1 22 or higher Chapter 1 Master Modbus Serial Interface General Features Communications interface EIA RS 485 and RS 232 with specific RTU Modbus master mode protocol functions Capacity for network communication Activity LED indicating the module is being accessed by the PC Transmission TX and reception RX LEDs for serial communication Watchdog circuit Operating temperature O to 60 C exceeding the IEC 1131 standard Storage temperature 25 to 70 C accordding to IEC 1131 standard Relative humidity 5 to 95 non condensing according to IEC 1131 standard RH2 level Unpacked weight 420 g Packed weight 480 g Protection class IP 20 against incidental finger touch and without waterproof protection according to IEC 529 standard Electrical Featu
14. es Slave address Modbus function expected at response Table 2 1 Control Operand The codes valid for the function status byte are the following re atl Non initialized control operand no call has been made to the function module yet Inactive the function is awaiting operation of the communicate input or awaiting the QK1402 MB module to be released by another CHF the QK1402 MB with regard to a transmission sent successfully completed 7 Communications error it was not possible to complete the communication function successfully Table 2 2 Function Status Chapter 2 Programming The Diagnostic codes only valid for function status 01 04 and 08 are the following 00 No indication communications with the PC through the bus 12 Non configured QK1402 MB the module is awaiting a configuration command to configure its serial 13 QK1402 MB in conflict the function that was awaiting a response from the module detected that the module s busy status was released by another function A module can only be used by one function at a time This error may occur if a new configuration module C is sent or if another function that uses the same module was called for configuration the communication or configuration command Communication time out the time limit for the response to arrive was reached and no response was received by the QK1402 MB in this period Invalid response the response received differs from t
15. et Multiple Registers 22 17 Report Slave Id 23 Modbus Functions 10 Physical Dimensions 1 Programming 1 l 1 Alphabetical Index Appendix I Serial Interface Connector Serial Interface RS 485 2 Connector Status RS 232 2 Codes 6 Serial Interface 2
16. gister Allows the user to write a 16 bit holding register in the addressed slave equipment or in all the network slaves by means of a broadcast message address 00 Parameter RXXX Y KMXXXXX KM 00006 MXXXX TMxxx KMxxXXXX Y KMXXXXX WDXXXX Bus address where the QK1402 MB card is housed Address of the slave equipment to which communication is transmitted Range 0 lt address lt 255 Type of Modbus function of this communication Memory operand of the PC that will be used by the function or memory table whose position O will be used Modbus address of holding register in the slave equipment to be modified The registers are numbered from address 0 this corresponds to the holding register number 40001 according to MODBUS standard Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 9 Parameters for Modbus Function 06 2 15 2 16 Chapter 2 Programming Function 07 Read Exception Status Allows the user to read the logical status on off of the 8 status control relays previously defined by the addressed slave equipment This function does not support broadcast communication Bus address where the QK1402 MB card is housed KMxxxxx Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 KM 00007 Type of Modbus function of this communication AXXX 0 First
17. he communication function sent concerning the Modbus slave equipment address Invalid response the response received differs from the communication function sent concerning the Modbus function number 24 Invalid response the response received differs from the communication function sent concerning the amount of data bytes 25 Invalid response the amount of data bytes of the response received from the QK1402 MB is higher than the available memory in the PC Broadcast command transmitted a function without response broadcast was sent Response received a valid response was received to the function Exception response Exception Code 01 Illegal Function Exception response Exception Code 02 Illegal Data Address Exception response Exception Code 03 Illegal Data Value Exception response Exception Code 04 Slave Equipment Failure 2 7 a 2 8 Chapter 2 Programming Exception response Exception Code 05 Acknowledge 45 GN Exception response Exception Code 06 Slave Equipment Busy 45 46 47 48 F Exception response Exception Code 07 Negative Acknowledge 48 Exception response Exception Code 08 Memory Parity Error 49 to Exception responses the least significant nibble of this byte 4 indicates the Exception Code returned by the slave equipment Available for future use Table 2 3 Diagnostics For diagnostics 00 none of the function outputs is activated For
18. ifferent Dxxxx operand must be used in each different call of the function The contents of the Dxxxx control operand cannot be changed in any part of the application program otherwise the function may not be correctly executed The control operand cannot be configured as retentive in the C 000 module OPER4 Not used Inputs and Outputs Description of inputs Enable when this input is energized the function is called and the parameters programmed in the CHF instruction are analyzed If the number of parameters or their type are different from the function requirements the Prog Error output is activated If they are correct the function is ready to communicate or configure the QK1402 MB Communicate This input must be energized in communication calls or configuration calls according to the number of parameters The function transmits the data referring to the communication or configuration to be executed to the QK1402 MB The waiting period can last several scan cycles of the application program during which no other communication is processed for this QK1402 MB module When a valid response is received for a communication or a valid configuration ends the Success output is energized during a scan cycle of the application program In case of failure in communication or configuration an error output is activated during a scan cycle The next CHF whose enable and communicate inputs are energized
19. ime above associated with a Reading 60 registers situation is considered the necessary time for sixty 16 bit registers to be transferred from the QK1402 MB to the PC operands after the response from the slave equipment has been correctly received and decoded The time periods above only consider the data transfer between CPU operands and the QK1402 MB module Delays associated with the serial transmission slave equipment response time and programmable controller scan cycle are not included 2 27 Chapter 3 Installation Installation This chapter presents the QK1402 MB Master Modbus Serial Interface installation procedures Physical Dimensions The QK1402 MB dimensions are presented in the figure below TT S Ca ja oO As O o N oO EN kA o Palo aaa LY a E EIER EN E 133 5 35 048 Figure 3 1 QK1402 MB dimensions Chapter 3 Installation Serial Interface The QK1402 MB has two 9 pin female connectors one complies with the RS 232C standard and the other one follows the RS 485 standard as identified on the module panel The following tables show the pinout of each connector The RS 232 and RS 485 serial interfaces of the QK1402 MB module cannot be used simultaneously RS 485 Connector jo BREF DO 8 TXD AXD 9 mDIAXD Table 3 1 RS 485 Connector RS 232C Connector En Table 3 2 RS 232 Connector The RTS
20. ing Programming The F 1402MB 031 function was designed to be used with the PCs in the QUARK series QK2000 QK800 and QK801 and makes the communication interface between the PC and the QK1402 MB module The QK1402 MB module makes the interface with the slave equipment units connected to the network Function call and execution is carried out by the CHF instruction function call which must be inserted into the user s application program implemented in ladder language using the MasterTool programmer Chapter 2 Programming F 1402MB 031 communicatio CHF enable Success 1402MB OPERI EXEC error OPER2 PROG error Figure 2 1 F 1402MB 031 Module Introduction This function must run on PCs in the QUARK series QK2000 QK800 or QK801 with the QK1402 MB module in the bus correctly addressed addressing straps and declared as QK1402 in module C 000 The F 1402MB 031 function can be called in two distinct ways for the configuration of the QK1402 MB and for communication with the slave equipment units on the network The configuration call is necessary to configure the QK1402 MB serial channel Usually only one configuration call of the F 1402MB 031 per program is necessary for each QK1402 MB module present in the bus after power on or after switching the PC to execution mode This call must not be executed simultaneously with the communication calls because it interferes with them The co
21. l be updated by the function or identification of the table that will be updated from its O position DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 13 Parameters for Modbus Function 12 The number of necessary memory positions to receive the values returned by this function may vary from 3 to 35 according to the configuration of the slave equipment See the slave equipment user s guide and the Modicon Modbus Protocol Reference Guide Event 0 of the slave equipment will be transferred to the highest byte of the PC first associated memory position Event 1 of the slave equipment will be transferred to the lowest byte of the PC first associated memory position Event 3 of the slave equipment will be transferred to the highest byte of the PC second associated memory position This is the sequence adopted for the transfer of all events received 2 19 2 20 Chapter 2 Programming Function 15 Force Multiple Coils Allows the user to force the logical status on off of output control relays coils in the addressed slave equipment or in all network slaves by means of a broadcast message address 00 housed KMxxxxx Address of the slave equipment to which poe communication is transmitted Range 0 lt address lt 255 KM 00015 Type of Modbus function of this communication YoAXXX X First subdivision of PC operand whose
22. mmable controllers of the QUARK series providing detailed information on their operation and use This guide is organized into three chapters and one appendix which allow finding the desired information quite easily Chapter 1 Master Modbus Serial Interface presents the main characteristics of the QK1402 MB communications interface and of the F 1402MB 031 function Chapter 2 Programming shows how to use the F 1402MB 031 module in the PC application program Chapter 3 Installation describes how to install the QK1402 MB interface in the PC Appendix A Glossary lists the expressions and abbreviations used in this guide Related Guides For additional information on programming software and on the Modbus protocol refer to the the following manuals e MasterTool Programming and User s Guide e Technical Specifications Manual Programmable Controllers e Modicon Modbus Protocol Reference Guide PI MBUS 300 xi Preface Information on the Modbus protocol can also be found on the Internet at the following web sites e http www modicon com techpubs toc7 html e http www modbus org xii Preface Terminology The following expressions are frequently used in the text of this guide Because of this they need to be recognized and understood PC Programmable Controller equipment made up of one CPU input and output modules and power supply CPU Central Processing Unit the main module of the PC which
23. mmunication call is used to perform the communication with the slave equipment units Several calls of this type can be inserted into the application program These calls are sequentially run when they refer to the same bus module The F 1402MB 031 function call must not be executed from an E018 program module Chapter 2 Programming Configuration Parameters The CHF instruction cells used to call the function in the CONFIGURATION mode are programmed in the following manner OPER 1 Specifies the number of parameters to be passed to the function in OPER3 This operand must be a memory constant with value 5 KM 00005 OPER2 Must be a memory constant operand with value 0 KM 00000 Specifies the number of parameters allowed to be programmed in the edit window of OPERA As this function requires no parameters in OPERA the value of OPER is 0 OPER3 Contains the parameters that are passed to the function They are declared in an edit window when the CHF instruction is edited The number of editable parameters is specified in OPER 1 being fixed at 5 for this module Rxxx Bus address where the QK1402 MB is housed KMxxxxx Memory constant that defines the communication baud rate KM 00000 38 400 bps KM 00001 19 200 bps KM 00002 9 600 bps KM 00003 4 800 bps KM 00004 2 400 bps KM 00005 1 200 bps KMxxxxx Memory constant that defines the character parity to be used in the communication
24. mmunication port is presented in table 3 2 The configuration of the cable to be used will depend on the pinout of the connector available in the slave equipment The following cables supplied by ALTUS can be used in some situations e AL 1344 CMDB25 CMDB9 Modem PC cable for the connection of the QK1402 MB to modem equipment with an EIA RS 232C standard connector e AL 1342 CMDB9 CFDB9 IBM PC PC cable for the connection to IBM PC equipment that emulates modem signals with DB9 connector e AL 1366 CMDB9 CMDBO9 cable for the connection to other ALTUS equipment with a 9 pin RS 232C standard interface e AL 1383 CMDB9 CFDB25 cable for the connection to IBM PC equipment with DB25 connector e AL 1390 CMDB9 CFDB9 cable for the connection to IBM PC equipment with DB9 connector Function Installation software The floppy disk that comes with the product contains all the functions modules F for the supported CPU models The F 1402MB 031 function file according to the CPU type must be copied to the application directory ladder and inserted into the project through a MasterTool programmer Project Edit Insert Module option The F 1402MB 031 function must be called from the CHF instruction Glossary Appendix A Glossary This appendix presents a glossary of words and abbreviations frequently used in this guide ALTUS Ladder language Set of instructions and operands that allow editing an application program t
25. ns Event Counter Allows the user to read status information and the event counter from the slave equipment This function does not support broadcast communication RXXX Bus address where the QK1402 MB card is housed KMxxxxx Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 KM 00011 Type of Modbus function of this communication Mxxxx Address of the first memory operand or TMxxx memory table initial position 0 to which the values returned by the function will be transferred DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 12 Parameters for Modbus Function 11 The normal response to this function consists of one status word and an event counter occupying therefore two memory positions in the PC 2 18 Chapter 2 Programming Function 12 Fetch Communications Event Log Allows the user to read status information from the device event counter message counter and receive a list of communication events from the slave equipment This function does not support broadcast communication Bus address where the QK1402 MB card is housed KMxxxxx Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 KM 00012 Type of Modbus function of this communication MXXxXX First memory operand of the PC whose TMxxx contents wil
26. ntents will be modified Range 1 lt number of registers lt 64 Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 15 Parameters for Modbus Function 16 2 21 2 22 Chapter 2 Programming Function 17 Report Slave Id Allows the user to read the information on the type of slave and supplementary data from the slave equipment Check the user s guide of the respective equipment This function does not support broadcast communication Bus address where the QK1402 MB card is housed KMxxxxx Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 KM 00017 Type of Modbus function of this communication Mxxxx Address of the first memory operand or TMxxx memory table initial position 0 to which the values returned by the function will be transferred DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 16 Parameters for Modbus Function 17 The number of memory positions necessary to receive the values returned by this function may vary from two positions up to a limit defined by the configuration of the slave equipment Check the slave equipment user s guide and the Modicon Modbus Protocol Reference Guide Data byte O Slave Id of the response from the slave equipment will be transfe
27. o be used in aPC Application Program Control algorithm usually programmed in ladder language which specifies the control of a specific machine by the PC Baud Rate Transmission Rate Rate at which information bits are transmitted through a serial interface or communications network Bit Basic information unit which has two states O or 1 Byte information unit consisting of eight bits Command Instruction typed by the user indicating to the equipment or program which task is to be executed Communications Network Set of devices nodes interconnected by communications channels Configuration Preparation to get a product working by means of the integration of hardware and software Configuration Module Module C Single module in a PC program that contains several parameters that are necessary for the controller to operate such as the amount of operands and the I O module disposition in the bus Connector mechanical element that allows connecting or separating two or more components or electrical circuits CPU Central Processing Unit Controls information flow interprets and executes the program instructions and monitors the system devices Debugging Tests to determine the correct way a product works and to spot and correct errors Appendix A Glossary Default preset value for a variable used in case there is no redefinition Diagnostic Procedure used to detect and isolate flaws It is also the group of data used
28. oes not support broadcast communication Bus address where the QK1402 MB card is housed KMxxxxx Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 KM 00003 Type of Modbus function of this communication Mxxxx First memory operand of the PC whose TMxxx contents will be updated by the function or identification of the table that will be updated from its 0 position YKMXXXXX Modbus address of the first holding register in the slave equipment to be read The registers are numbered from address 0 this corresponds to the holding register number 40001 according to MODBUS standard KMxxxxx Number of registers of the slave equipment to be read Range 1 lt number of registers lt 64 DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 6 Parameters for Modbus Function 03 Chapter 2 Programming Function 04 Read Input Registers Allows the user to read 16 bit input registers from the addressed slave equipment This function does not support broadcast communication Bus address where the QK1402 MB card is housed KMxxxxx Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 KM 00004 Mxxxx First memory operand of the PC that will be updated by the TMxxx function or identification of the table that will be updated from it
29. ork where information transfers are initiated by any node connected to the data bus Nibble Information unit consisting of four bits Node Any station of a network with communication capability using an established protocol Octet Group of eight bits numbered from 0 to 7 Operands Elements on which instructions act They can represent constants variables or variable sets PC Abbreviation of Programmable Controller Procedure Module Module P Module of a PC program that is called from the main module module E or from another procedure module or function without parameter transfer Program Set of basic instructions properly ordered with which someone instructs a certain machine for it to perform operations with the data in order to obtain a result Programmable controller Device that performs control under the command of an application program written in relay and block language It consists of a CPU a power source and an I O structure Programming The act of preparing all the steps of a program for a computer or similar device Programming language A set of rules conventions and syntax used to elaborate a program a set of symbols used to represent and communicate information or data among people and machines Appendix A Glossary Programming logic Graphic matrix where the relay diagram language instructions that compose an application program are inserted a set of logical items sequentially ordered consti
30. owing formats and meaning gt DANGER The DANGER label indicates risk of life serious personal injury or substantial material damage will result if the necessary precautions are not taken CAUTION The CAUTION label indicates risk of life serious personal injury or substantial material damage can result if the necessary precautions are not The ATTENTION label indicates that personal injury or minimal material damage can result if the necessary precautions are not taken Preface Contains important information about the product its operation or a part of text to which special attention should be paid XV Preface Technical Support xvi ALTUS EXPRESS get information by calling 55 51 589 9500 INTERNET e Website http www altus com br e E mail altus altus com br If the equipment is already installed it is advisable to have the following information available before contacting Technical Support e equipment models used and configuration of the system installed e CPU serial number equipment revision and operating system version shown on a fixed tag on the lateral part of the equipment e information on the CPU mode of operation obtained from the programming software through the Communicates Status Information command e Contents of the program modules obtained from the programming software Preface Manual Revisions Reference code revision and date of the current user s guide are indicate
31. r control variables of a process System Set of devices used for the control of a machine or process consisting of the PC CPU I O module Personal Computer and H M Interfaces Tag Name associated to an operand or logic that allows a summarized identification of its content Time out maximum preset time for a communication to be completed causing a communications error if exceeded Word Unit of information composed of sixteen bits Appendix A Glossary Index C Communication Parameters 4 Communication Network 3 Point to Point 6 Configuration Parameters 3 Control Operand 6 p Diagnostics Codes 9 ch E018 2 Execution Time 27 F 1402MB 031 2 Features 4 Electrical Features 4 General Features 4 Software Features 5 Function Installation 6 Function Execution Time 27 Operating Sequence 26 Processing 24 Appendix Alphabetical Index ae Inputs and Outputs 5 Communicate 5 Enable 5 Exec Error 6 Prog Error 6 Success 5 Installation 1 Installation Bus 3 Function 6 M Modbus Function 04 Read Input Registers 14 Modbus Function 01 Read Coil Status 11 02 Read Input Status 12 03 Read Holding Registers 13 05 Force Single Coil 15 06 Preset Single Register 16 07 Read Exception Status 17 08 Diagnostics 18 11 Fetch Communications Event Counter 19 12 Fetch Communications Event Log 20 15 Force Multiple Coils 21 16 Pres
32. re is no other CHF using the same QK1402 MB module in this cycle A possible approach to initiate a communication and realize it has ended is described below e keep the enable input always active e when the communication must be initiated activate the communication input e when some of the outputs success or error goes to active state the communication has ended and the communication input may be turned off Also the Dxxxx operand may be examined to have details about possible errors The main processes carried out by the F 1402MB 031 function are the following e consistency of function call parameters e verification of the QK1402 MB module status in the bus e verification of configuration calls of the QK1402 MB module e verification of inactive status when the module is released so that communication commands can be sent 2 23 Chapter 2 Programming e verification of awaiting response status when the module is busy with the function itself for obtaining responses from the module or keeping a time out count e consistency of the communication function to be executed e consistency of the response received and transfer of response to memory operands or memory tables e updating of function status and outputs Whenever it is necessary to establish short communications with the slave equipment it is possible to always keep the communicate inputs of the various function calls a
33. res 1 4 Bus power consumption 70 mA E 12 Vdc Severity level of electrostatic discharge ESD according to IEC 1131standard level 4 Electrical noise immunity oscillating wave type according to IEC 1131 standard severity level C and IEEE C37 90 1 SWC Immunity to irradiated electromagnetic field 10 V m E 140 MHz according to IEC 1131 Chapter 1 Master Modbus Serial Interface Software Features e Uses the F 1402MB 031 function module which implements the interface between the QK1402 MB and the PC e Activates Modbus functions to communicate with slave equipment units over the network e Mode of transmission RTU 8 bit binary code e Type of checksum CRC 16 cyclic redundancy check e Implemented Modbus protocol functions 01 Read Coil Status 02 Read Input Status 03 Read Holding Registers 04 Read Input Registers 05 Force Single Coil 06 Preset Single Register 07 Read Exception Status 08 Diagnostics 11 Fetch Communications Event Counter 12 Fetch Communications Event Log 15 Force Multiple Coils 16 Preset Multiple Registers 17 Report Slave Id e Configurable data rate 38 400 19 200 9 600 4 800 2 400 or 1 200 bps e Configurable communications character parity No parity bit Odd parity bit Even parity bit e Configurable number of stop bits one stop bit two stop bits e Communications time out configurable from 1 to 254 hundredths of a second Chapter 2 Programm
34. rom the slave or signals the completion of the operation due to time out or other errors by indication of the respective error code to the CPU The number of scan cycles performed by the CPU in this condition depends on the response time from the slave equipment or the time out configured for the function In this situation the function execution time corresponds to item A in table 2 17 Execution Time of F 1402MB 031 Function e Scan Cycle n 1 Once the previous step has been accomplished the data are transferred to PC operands and the final status of the function is indicated Success Code Returned Exception Code Time out etc The appropriate function output remains active during this scan Success or Exec Error e Scan Cycle n 2 The function output Success or Exec Error returns to its normal condition 2 25 Chapter 2 Programming INOPERATIVE UPDATES STA COMMUNICATION 00111352A Figure 2 3 Module F Flowchart Function Execution Time In different situations the following execution times for the F 1402MB 031 function calls are observed Function call execution time A No activity just enablement 860 us B Communicate input activated C Reading 1 register D Reading 60 registers E Writing 60 registers Table 2 17 Execution Time of F 1402MB 031 Function 2 26 Chapter 2 Programming For example the execution t
35. rred to the highest byte of the PC first associated memory position Data byte 1 Run Indicator Status will be transferred to the lowest byte of the PC first associated memory position Data byte 3 if applicable will be transferred to the highest byte of the PC second associated memory position This sequence is adopted for the transfer of all received data Chapter 2 Programming Processing When an application program is running in the PC at most one call CHF instruction of the F 1402MB 031 function per QK1402 MB module may be active even if there are several calls whose enable and or communication inputs are active After the function called has been executed some of their outputs may be kept energized during one scan cycle of the application program In the following scan cycle the function will release the outputs and release the QK1402 MB module for the next CHF function call which could be awaiting the module to be released in order to switch to the active condition The application program cannot skip or disable the function call instruction while it is active We recommend keeping the enable input of the communication calls permanently active This way the control will be made only by the communicate input The communicate input does not have to be continuously active until the end of the communication It only has to be activated once by a scan cycle to enable the communication provided the
36. s 0 position YKMxxxxx Modbus address of the first input register in the slave equipment to be read The input registers are numbered from address 0 this corresponds to the input register number 30001 according to MODBUS standard YKMxxxxx Number of registers of the slave equipment whose contents will be read Range 1 lt number of registers lt 64 Dxxxx Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 7 Parameters for Modbus Function 04 2 13 Chapter 2 Programming Function 05 Force Single Coil Allows the user to write the logical status on off of an output control relay coil in the addressed slave equipment or in all network slaves by means of a broadcast message address 00 Bus address where the QK1402 MB card is housed KMxxxxx Address of the slave equipment to which communication is transmitted Range 0 lt address lt 255 communication EXXX X contents will be used by the function YoSXXX X YKMXXXXX Modbus address of the point in the slave equipment to be written The coils are numbered from address 0 this corresponds to the coil number 1 according to MODBUS standard DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 8 Parameters for Modbus Function 05 Chapter 2 Programming Function 06 Preset Single Re
37. st comply with the RS 485 standard according to the following figure For example the items below which can be ordered from ALTUS may be used e AL 2305 Branch Cable CMDB9 RS485 e AL 2600 Branch and Network Termination Module e AL 2301 RS 485 Network Cable The switches of the AL 2600 branch termination module in the extreme nodes of the RS 485 network must be configured as Profibus terminations and those AL 2600 in intermediate nodes must be configured as branches Chapter 3 Installation Note that the QK1402 MB is usually connected to one of the RS 485 network ends a situation in which one of the AL 2301 cables from Figure 3 2 wouldn t exist and the AL 2600 would be configured as Profibus termination instead of as branch Also note that just one of the AL 2600 must be connected to the ground GND terminal connected to the earth ground on the panel Conector DB 9 RS 485 SGND 5 4 BREF 6 TXD RXD 8 TXD RXD 3 4 a AL 2305 QK1402 MB SHD D D BR BR GND AL 2600 SHD D D BR BR SHD D D BR BR pi E AL 2301 Figure 3 2 RS 485 Connection Scheme AL 2301 3 4 Chapter 3 Installation Point to Point Communication General Information The point to point communication between the QK1402 MB and a Modbus slave equipment sometimes can be made through an RS 232 standard communication port The identification of the pins of the QK1402 MB RS 232 DTE co
38. subdivision of PC operand whose EXxx 0 contents will be updated by the function SXxx 0 It is mandatory to use the operand from bit 0 DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 10 Parameters for Modbus Function 07 Chapter 2 Programming Function 08 Diagnostics Allows the user to test the communication system or error conditions that are present in the slave equipment according to the code and data for diagnostics This however does not affect the operation of the slave equipment This function does not support broadcast communication RXXX Bus address where the QK1402 MB card is housed Address of the slave equipment to which communication is transmitted Range 1 lt address lt 255 communication Mxxxx Memory operand of the PC whose contents TMxxx will be updated by the function or identification of the memory table whose position O will be updated with the data field of the response from the slave equipment Check slave equipment user s guide KMxxxxx Data associated with the diagnostics subfunction when necessary Check slave equipment user s guide DXXXX Address of decimal operand used by the function for the internal control of its processing and for function status indications Table 2 11 Parameters for Modbus Function 08 2 17 Chapter 2 Programming Function 11 Fetch Communicatio
39. tutes a program module Programming terminal Personal Computer running a PC programming software such as AL 3830 AL 3832 or MasterTool Protocol Procedure rules and conventional formats that by means of control signals allow the establishment of data transmission and error retrieval among devices Remote station Devices that read and write input and output points of the controlled process communicating their value when the CPU is active RS 485 EIA 485 Industrial standard physical level for data communication Its main characteristics are the following communication possibility with several modes and high immunity to electromagnetic interference due to their operation with differential voltage Scan cycle A complete execution of a programmable controller executive program Serial Set of modules that have the same AL QK FT or PL code and the same initial numeric character For instance the AL 2000 serial comprises the AL 2000 MSP C and AL 2002 MSP controllers Serial channel Device which allows the connection and communication of data between two or among more devices through a common standard Slave Device of a communications network that responds to command requests originated from the master Software Computer programs procedure and rules related to a data processing systems operation Status Module status Supervision status Equipment connected to a PC network or instrumentation whose purpose is to monitor o
40. vided into two generic types hardware and software The former is caused by a signal coming from a peripheral device and the latter is created by instructions in a program Kbytes Representative unit of memory It represents 1 024 bytes Logic Graphic matrix where the relay diagram language instructions that compose an application program are inserted a set of logical items sequentially ordered constitutes a program module Master Equipment of a communications network from which command requests are originated and passed to other devices on the network Appendix A Glossary Master slave communications network Communications network where the data transfers are only initiated from one single node the network master connected to the data bus The other network nodes slaves only respond when requested Menu Set of available options to be selected by the user in order to activate or execute a certain task These options are displayed on a screen by a program Module when referring to hardware Basic element of a complete system that has well defined functions It is normally connected to the system by connectors It can be easily replaced Module when referring to software Part of an application program capable of doing a specific function It can run independently or in conjunction with other modules exchanging information by means of parameter transfer Multimaster communications network Communications netw
41. will be automatically voided if the equipment has had any modifications performed by personnel not authorized by ALTUS The guarantee does not apply when external agents cause equipment failure by incorrect use or installation of product in addition to accidents and force majeur events ALTUS guarantees its equipment functions as explicitly described in its user s guides and or Technical Specifications and does not guarantee the satisfaction of any particular type of application of the equipment ALTUS does not recognize any other guarantee direct or implied particularly with third party offerings Additional information about ALTUS products services and offerings can be requested through writing ALTUS address can be found on the back cover of this guide ALTUS is not responsible for non registered information provided about its equipment COPYRIGHT MasterTool and QUARK are registered trademarks of ALTUS Sistemas de Inform tica S A IBM is a registered trademark of International Business Machines Corporation Table of Contents Table of Contents Table of Contents lossary A 1 Index B 1 Figures Figures QK1402 MB Modbus Communication Network F 1402MB 031 Module Operation structure Module F Flowchart QK1402 MB dimensions RS 485 Connection Scheme vii Tables Tables Preface Preface User s Guide Description This manual describes the Master Modbus Serial Interface for progra
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