K-BUS - Driver of Protocol for VIESSMANN Decamatic
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1. User s Manual AS see and get more A K BUS Driver of Protocol for VIESSMANN Decamatic Boiler PLCs User s Manual Doc No ENP4027 Version 29 08 2005 User s Manual asix4 ASKOM and asix are registered trademarks of ASKOM Sp ka z 0 0 Gliwice Other brand names trademarks and registered trademarks are the property of their respective holders All rights reserved including the right of reproduction in whole or in part in any form No part of this publication may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying recording or by any information storage and retrieval system without prior written permission from the ASKOM ASKOM sp z o o shall not be liable for any damages arising out of the use of information included in the publication content Copyright 2005 ASKOM Sp z o o Gliwice ASKOM Sp z o o ul J zefa Sowi skiego 13 44 121 Gliwice AS zsa tel 48 0 32 3018100 fax 48 0 32 3018101 http www askom com pl e mail office askom com pl asix4 K BUS Driver of Protocol for VIESSMANN Decamatic 1 K BUS Driver of Protocol for VIESSMANN Decamatic Boiler PLCs 1 1 Driver Use The K BUS driver is used for data exchange between VIESSMANN Dekamatic boiler PLCs connected to the Dekatel G Vitocom 200 concentrator and an asix system computer For communication with asix an interface of the RS 232C sta2. a DLL automatically 1 3 Addressing the Process Variables The syntax of symbolic address which is used for variables belonging to the K BUS driver channel is as follows V lt index gt where V fixed symbol of the variable type index variable index compatible to the table of addresses of variables for the controller under consideration given in HEX form Raw values of the variables are transferred by the driver as numbers of the WORD type Examples of declaration of variables max boiler temperature id 12 HEX JJ_1 V12 CHANI 1 1 NOTHING external temperature id 25 HEX JJ_2 V25 CHANI 1 1 NOTHING 1 4 Driver Configuration The K BUS protocol driver may be configured by using the K BUS section placed in the application INI file Individual parameters are transferred in separate items of the section Each item has the following syntax item_name number number YES NO v LOG_FILE file_name Meaning the item allows to define a file where all diagnostic messages of the K BUS driver and information about the content of telegrams received by the driver are written If the item does not define its full path then the log file is created in the current directory The log file should be used only while the asix start up Default value by default the log file is not created lV LOG_OF_TELEGRAMS YES NO Meaning the item allows to write to the log file declared by using the item LOG_FILE the
3. ccessive characters of the answer is equal to 50 milliseconds number of the regulator time in milliseconds from 10 up to 300 Delay After Having Mapped the Data in Concentrator Dekatel G Vitocom 200 Dekatel G Vitocom 200 concentrators allow simultaneous reading 8 variables maximally The work mode with the concentrator consists in successive execution of the following functions for the successive group of variables e transfer of a list of maximally 8 variables to the concentrator so called concentrator mapping e wait for updating the variables in the concentrator after mapping e reading the variables from the concentrator v MAPPING_DELA Y number Meaning Default value Parameter the item allows to determine the time which must elapse between mapping and the first reading of data from the concentrator so that the read data might be assumed as reliable In case of too short delay the risk of reading the values of variables which were registered in the concentrator before mapping exists by default the parameter assumes a value of 35 seconds ASKOM Gliwice August 2005 5 K BUS Driver of Protocol for VIESSMANN Decamatic asix4 number time in seconds NOTE The protocol specification does not give the formula to calculate the delay after concentrator mapping therefore this parameter must be determined experimentally by the user lV GLOBAL_ALARMS YES NO Meaning th
4. contents of telegrams sent within the communication with regulators Writing the contents of telegrams to the log file should be used only while the asix start up Default value by default the telegrams are not written 4 August 2005 ASKOM Gliwice asix4 K BUS Driver of Protocol for VIESSMANN Decamatic v LOG_FILE_SIZE number Meaning Default value the item allows to define the log file size in MB by default it is assumed that the log file has a size of 1 MB lV RECV_TIMEOUT id number Meaning Default value Parameter id number the item allows to determine a maximal waiting time for arriving the first character of the answer from a given regulator After this time is over it is assumed that the controller under consideration is turned off and the transmission session ends with an error by default it is assumed that the maximal waiting for the first character of the answer is equal to 1000 milliseconds number of the regulator time in milliseconds from 100 up to 5000 lV CHAR_TIMEOUT id number Meaning Default value Parameter id number the item allows to determine a maximal time between successive characters of the answer from a given regulator After having exceeded this time it is assumed that the regulator under consideration does not work correctly and the transmission session ends with an error by default it is assumed that the maximal time between su
5. e item controls the way of transferring alarms read from regulators to the alarms system of asix start up Default value by default the alarms are transferred to the alarms system as global alarms transferred to the alarms system by means of the function AsixAddAlarmGlobalMili Setting the value of the item GLOBAL ALARMS on NO causes that the alarms are transferred to the alarms system by means of the function AsixAddAlarmMili lV SIGNED_VARIABLE YES NO Meaning the item determines the way of interpretation of the BYTE variable Setting the value on NO makes the SIGNED CHAR interpretation be given to the variable it allows transferring the negatives Default value by default and in the case of setting the variable on YES the variable of the BYTE type assumes the UNSIGNED CHAR interpretation 6 August 2005 ASKOM Gliwice asix4 Table of Contents 1 K BUS DRIVER OF PROTOCOL FOR VIESSMANN DECAMATIC BOILER PLCS 1 1 DRIVER USE 1 2 DECLARATION OF TRANSMISSION CHANNEL 1 3 ADDRESSING THE PROCESS VARIABLES 1 4 DRIVER CONFIGURATION ARAUL W ASKOM Gliwice August 2005 7
6. ndard is used 1 2 Declaration of Transmission Channel The full syntax of declaration of transmission channel which uses the K BUS protocol is given below logical_channel_name K BUS id port alarm_offset where K BUS driver name id identifier of the regulator port port name COM1 COM2 etc optional parameters alarm_offset offset added to the number of alarm sent from the regulator By default the value of offset equals 0 The list of identifiers assigned to individual regulators is given below Dekamatic D1 Dekamatic DE Dekamatic D2 Kesselregelung 2 Kessel Dekamatic D2 Kesselregelung 3 Kessel Dekamatic HK 1 und 2 Heizkreis Dekamatic HK 3 und 4 Heizkreis Dekamatic HK 5 und 6 Heizkreis Dekamatic HK 7 und 8 Heizkreis Dekamatic HK 9 und 10 Heizkreis Dekamatic HK 11 und 12 Heizkreis 0 Dekamatic HK 13 und 14 Heizkreis 1 Dekamatic HK 15 und 16 Heizkreis mere OONA MN BWN eR f Transmission parameters are constant 1200 Bd 8 bits of a character parity check even one stop bit EXAMPLE A declaration of the logical channel named CHAN 1 which works according to the K BUS protocol and exchanges the data with the regulator Dekamatic DE id 1 through the COM2 port is as follows CHANI K BUS 1 COM2 ASKOM Gliwice August 2005 3 K BUS Driver of Protocol for VIESSMANN Decamatic asix4 The K BUS driver is loaded as
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