4590 TSM (v2.03) Service Manual for L&J Tankway
Contents
1. L amp Tankway Servo Table 4 1 summarizes the L amp Tankway commands supported by the 4590 TSM Table 4 1 Tankway Commands Supported by the 4590 TSM Command Description 1 Report level L amp J Tankway Standard 2 Report product temperature LS Tankway Standard 4 Report temperature gn L amp J Tankway Standard 96 Report an extended set of data level temperature water level and density 1 The source of the temperature to be returned can be configured through the parameter Temp2ref 9216 Configuration Tank Side Monitor Table 4 2 summarizes the L amp Tankway Standard Level Coding Types supported by the 4590 TSM Table 4 2 L amp J Tankway Standard Level Encoding Types Device Type Description CCW Varec Uses gray code table for the CCW Varec Tank Gauge CCW S8y Uses gray code table for the CCW Shand amp Jurs Tank Gauge Ft amp 100 Whole nuimber of feet and 100 of an inch 1 32 inch Number of 32 of an inch 4 2 Configuration Parameters For successful communication on an L d Tankway loop a number of configuration settings must be made to match the configuration of the bus Table 4 3 summarizes the configuration information required by the 4590 TSM Table 4 3 L8 Tankway Interface Configuration Configuration Item Valid Entries Default ID 0 127 1 Device Type e CCW Varec CCW Varec CCW S e2. T 100 e 1 32 inch Baud Rate e 300 1200 600 1200 2400 Temp 2 Ref Any Temperature Ref Vap Temp Ref Discrete Ref 1 Any discrete or alarm value ISDI 1 Discrete Ref 2 Any discrete or alarm value ISDI 2 Service Manual 4590 4 2 1 Description of Configuration Parameters Configuration Table 4 4 summarizes the configuration parameters that make up the Basic Setup The numbers in parentheses indicate the menu position ture Table 4 4 Submenu Basic Setup Field Description Default Protected D92109 This is the identifier value The WEM 4590 TSM will respond to requests 1 Switch which contain this identifier value Baud Rate Selects which of the possible baud rates WEM re 1200 s communication should work at Switch Type 9213 Describes the format used to encode the ocw ep W amp M Parity Type level value sent to the control room Switch 9214 De Indicates which discrete value will be IS DI 1 transmitted as L8 Discrete Value 1 Value Reference 1 9215 GE Indicates which discrete value will be IS DI 2 transmitted as L amp J Discrete Value 2 Value Reference 2 Temp 2 Ref 421 Indicates which value will be transmitted Tank Val Temperature 2 as LSJ Temperature 2 The default is Reference connected to the Tank Vapor Tempera ues Vapor Temperature Table 4 5 summarizes the configuration parameters that make up the Diagnostics S
3. foot in the level 2nd byte gray code value of the number of 1 16 of an inch in the level Ft amp 100 E byte binary coded value of the number of whole feet in the level gna byte binary coded value of the number of 1 8 of an inch in the level 1 32 inch The full 16 bytes of the reply contain the binary encoded value representing a number of 32S of an inch in the level 13 Measured Values Tank Side Monitor Temperature Request Reply This reply of the 4590 TSM consists of a message containing the following information Table 5 9 L8 Tankway Temperature Reply Coding Byte Description 1 All bits hold the temperature data bits O 7 2 Bit 7 indicates the status of discrete lO 2 Bit 6 indicates the status of discrete IO 1 Bit 5 if set indicates that the temperature is ve Bit 4 if set indicates that the value is over range or invalid Bits 0 3 hold the temperature bits 8 11 1 The temperature is stored as a binary number representing the number of 0 2 F in the value L Tankway Servo Reply This reply of the 4590 TSM is a 16 byte message containing four measurement values level temperature water level and density and some status flag bits The content of the message is described in Table 5 10 Each cell represents a byte of the reply message Table 5 10 L amp Tankway Servo Reply Message Structure Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 2
4. Flag bits Level byte Level byte Temp Temp BSSW 9 1 2 byte 1 byte 2 byte 1 Byte 9 Byte 10 Byte 11 Byte 12 Byte 13 Byte 14 Byte 15 Byte 16 BS amp W Dens byte Dens byte z CRC byte 2 1 2 Flag bits Byte 3 Byte Description 1 Bit 7 2 are always O Bit 1 if set indicates the level value bytes 4 5 of the reply is valid Bit O if set indicates the BSSW value bytes 6 7 of the reply is valid Level Bytes 4 5 The full 16 bits level byte 1 and byte 2 contain the binary coded value representing a number of 32 of an inch in the level Note This encoding does not depend on the device type parameter of the 4590 TSM 14 Service Manual 4590 Measured Values Temperature Bytes 6 7 Byte Description 1 All bits hold the temperature data bits O 7 2 Bit 7 indicates the status of discrete lO 2 Bit 6 indicates the status of discrete IO 1 Bit 5 if set indicates that the temperature is ve Bit 4 if set indicates that the value is over range or invalid Bits O 3 hold the temperature bits 8 11 1 The temperature is stored as a binary number representing the number of 0 2 F in the value BSSW Bytes 8 9 The full 16 bits BSSW byte 1 and byte 2 contain the binary coded value representing the water level in the tank number of 32 of an inch Density Bytes 12 13 The full 16 bi
5. SRMO10FVAE0808 4590 Tank Side Monitor LSA Tankway Communication Protocol Service Manual Software Version v01 04 www varec com Varec Inc 5834 Peachtree Corners East Norcross Atlanta GA 30092 USA Tel 1 770 447 9202 Fax 1 770 662 8939 4590 Copyright All rights reserved Printed in the United States of America Except as permitted under the United States Copyright Act of 1976 no part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of the Publisher Varec Inc 5834 Peachtree Corners East Norcross Atlanta GA 30092 USA Trademarks acknowledged Varec Inc recognizes all other trademarks Trademarks of other products mentioned in this document are held by the companies producing them Varec is a registered trademark of Varec Inc Copyright 2003 Hart is a registered trademark of HART Communication Foundation Austin TX USA TankWay is a registered trademark of L8j Technologies Disclaimer of Warranties The contract between the Seller and the Buyer states the entire obligation of the Seller The contents of this instruction manual shall not become part of or modify any prior or existing agreement commitment or relationship between the Seller and Buyer There are no express or implied war
6. alues level temperature water level and density Their encodings do not depend on the parameter Device Type Tables 5 5 and 5 6 list the limits and error handling applied to these parameters Table 5 5 Servo Reply Value Range Measured Value Value Range Granularity Units Level 0 0 to 95 5 1 32 inch ft Temperature 819 0 to 819 0 0 2 F F Density 0 0 to 65535 1 kg m kg m Water Level 0 0 to 95 5 1 32 inch ft Table 5 6 Servo Reply Values Error Handling Condition Parameter Level Temperature Density BS amp W Invalid Offline AN Temperature SE Level Valid Bit not ag d BS amp W Valid Bit not set bit 3 1 D He Bit set bit Max Value set bit 3 0 LE Min Value Min Value Min Value Min Value Value oe Max Max Value Max Value Max Value Max Value 1 Bit x y designates the bit number x of the byte number y in the response See Table 5 10 L Tankway Servo Reply Message Structure for more information 12 Service Manual 4590 Measured Values 5 4 L amp J Tankway Message Format 5 4 1 5 4 2 The LSJ Tankway communication takes place on a pair of cables normally at 30 VDC one for transmission and one for reception Bits are represented by digital voltage levels on these cables These bits are then assembled into bytes Parity bit stop bit and start bit are added and the message is sent UART configuration for L is fixed one
7. ion made here will be the same as that followed by the L amp J master Level Temperature o Temp 2 Ref Water Level Obs Density DI Ref 2 Figure 2 1 Function Block L amp J Output Implementation Tank Side Monitor 4 Service Manual 4590 Installation Recommendations 3 Installation Recommendations Follow these recommendations for field installation of the 4590 TSM with the L amp J Tankway protocol variant e Use two twisted pairs of 18 AWG wire one power and one communication e Connect the units in parallel as shown in Figure 3 1 to avoid crosstalk between the signals Connect the gauges in parellel as shown in Figure 3 2 e The maximum suggested cable length is 10 km 18 AWG twisted pair 4S 08 C1 Power vp KICKER 00 cz encoder Master lt Unit 4590 TSM non is terminals 18 AWG twisted pair 40 C3 Computer Le 11 C4 Ground iii ee ete ee ee ee Figure 3 1 Wiring diagram for L amp Protocol L amp J Tankway Master Unit 1 4590 TSM 2 Figure 3 2 Standard topology for L amp Protocol Installation Recommendations Tank Side Monitor 6 Service Manual 4590 Configuration 4 Configuration The L amp J Tankway interface on the 4590 TSM must be configured to establish communication The local display or ToF tool allows the
8. ranties set out in this instruction manual The only warranties that apply are those in the existing contract between the Seller and Buyer The Varec 4560 Servo Gauge Monitor has not been tested by Varec under all possible operational conditions and Varec may not have all the data relative to your application The information in this instruction manual is not all inclusive and does not and cannot take into account all unique situations Consequently the user should review this product literature in view of his her application If you have any further questions please contact Varec for assistance Limitations of Seller s Liability In the event that a court holds that this instruction manual created some new warranties Seller s liability shall be limited to repair or replacement under the standard warranty clause In no case shall the Seller s liability exceed that stated as Limitations of Remedy in the contract between the Seller and Buyer Use of parts that are not manufactured or supplied by Varec voids any Varec warranty and relieves Varec of any obligation to service the product under warranty Varec recommends the use of only Varec manufactured or supplied parts to maintain or service Varec 4560 Servo Gauge Monitors Terms of Use The information provided in this document is provided as is without warranty of any kind Varec Inc disclaim all warranties either express or implied including the warranties of merchantability and fitne
9. rules are applied to the level value returned in the L8y Tankway message Table 5 2 Level Error Handling Device Type Condition Level Invalid Offline Level Below Min Value Level Above Max Value CCW Varec Maximum Value Minimum Value Maximum Value CCW S8y Invalid Gray Code Minimum Value Maximum Value Ft amp 100 Invalid Gray Code Minimum Value Maximum Value 1 32 inch Maximum Value Minimum Value Maximum Value 5 2 Temperature Request L amp J Tankway Standard Table 5 3 lists the limits applied to the returned temperature value These limits do not depend on the device type as shown below Table 5 3 Temperature Range Measured Value Device Type Value Range Granularity Units Temperature All 819 0 to 819 0 0 2 F F Error and over range are treated as follows Table 5 4 Condition Temperature Error Handling Responses for all Device Types Temperature Invalid Offline Temperature Invalid Bit Set Temperature Below Min Value Minimum Value Temperature Above Max Value Maximum Value 11 Measured Values Tank Side Monitor 5 3 L amp J Tankway Servo Request If the host is configured for the L amp J Tankway Servo protocol variant data are requested using the command 96 See Chapter 4 Protocol Variants for more information In this case the 4590 TSM reply uses a specific response This response contains four measurement v
10. scription of Configuration Parameters 9 Measured Values 11 Level Request L amp J Tankways Standard 11 Temperature Request L amp J Tankway Standard 11 L amp J Tankway Servo Reguest 12 L amp J Tankway Message Format 13 5 4 1 Request Message 13 5 4 2 Reply Message 00 eee eee 13 Contents Tank Side Monitor Service Manual 4590 Introduction 1 Introduction This protocol guide explains the operation of the L amp J Tankway protocol per Modicon document PI MBUS 300 Rev C 1991 implemented in the Varec 4590 Tank Side Monitor TSM Introduction Tank Side Monitor 2 Service Manual 4590 Implementation 2 Implementation The implementation of the L8J Tankway protocol for the 4590 TSM provides a standard form of digital communication via a voltage mode bus An effort has been made to parallel current implementations to the greatest extent possible so that the 4590 TSM communicates with existing L amp J Tankway masters Check compatibility carefully to ensure that the 4590 TSM is properly configured for the data format expected by the host system or computer Due to the unique application requirements of the 4590 TSM application exceptions have been made and noted Note There is no guarantee that the interpretat
11. ss for a particular purpose In no event shall Varec Inc or its suppliers be liable for any damages whatsoever including direct indirect incidental consequential loss of business profits or special damages even if Varec Inc or its suppliers have been advised of the possibility of such damages Tank Side Monitor This manual is solely intended to describe product functions and should not be used for any other purpose It is subject to change without prior notice This manual was prepared with the highest degree of care However should you find any errors or have any questions contact one of our service offices or your local sales agent On Safety and Proper Use Read this manual carefully and make sure you understand its contents before using this product Follow all instructions and safety guidelines presented in this manual when using this product If the user does not follow these instructions properly Varec cannot guarantee the safety of the system Service Manual 4590 Contents 4 2 5 1 5 2 5 3 5 4 Contents Introduction EE 1 Implementation 3 Installation Recommendations 5 Configuration 7 Configuration Settings 7 4 14 Nee AI era Die lan in Den 7 4 1 2 Protocol Variante 7 Configuration Parameters 8 4 2 1 De
12. start bit one stop bit and even parity Request Message The request is a message block sent from the control room These bits encode the device whose data is requested as well as the command to be performed as shown in Table 5 7 Table 5 7 L amp J Tankway Request Range Byte Description 1 Bit 7 is always 1 Bit O to 6 hold the device ID 2 Bit 7 is always O Bits 6 and 5 are set together to request an extended reply L8j Tankway Servo Bits 4 and 3 are always O Bit 2 is set if temperature 2 is requested L amp Tankway Standard Bit 1 is set if temperature 1 is requested L amp Tankway Standard Bit O is set if level is requested L amp J Tankway Standard 1 Only one of these bits can be set at a time and not if bits 5 and 6 are set Reply Message The reply message from the 4590 TSM depends on the L amp Tankway interface settings of the 4590 TSM However it always consists of a single message Level Request Reply This reply from the 4590 TSM consists of a message where all 16 bits of the data are used to encode the level value Depending on the device type setting the level is encoded as follows Table 5 8 L amp J Tankway Level Reply Coding Device Type Description CCW Varec 1 byte gray code value of the number of 1 2 foot in the level 2nd byte gray code value of the number of 1 16 of an inch in the level CCW G SI byte gray code value of the number of 1 2
13. ts density byte 1 and byte 2 contain the binary coded value representing the density of kg m CRC Byte 16 The CRC byte is calculated by adding all the bytes of the reply 15 Measured Values Tank Side Monitor 16 Service Manual 4590 NOTES 17 Your official representative www varec com Varec Inc 5834 Peachtree Corners East Norcross Atlanta GA 30092 USA Tel 1 770 447 9202 Fax 1 770 662 8939 2006 Varec Inc All Rights Reserved This document is for information purposes only Varec Inc makes no warranties express or implied in this summary The names of actual companies and products mentioned herien may be the trademarks of their respective owners
14. ubmenu Table 4 5 Submenu Diagnostics 22 Field Description Height of Bar Output Status 9221 lows The Communication Status Graph CSG provides a simple graphical overview of communication between bus room graph The height of the bar represents the activity during the last second as fol e Replied to Host largest bar e Received Request for this 4590 TSM Request for another gauge on this the gauges and the control Bytes were detected on the bus e Bits were detected on the bus smallest bar e Nothing detected no bar gap in Under normal operating conditions only the first three items should be seen with or without gaps Configuration Tank Side Monitor 10 Service Manual 4590 Measured Values 5 Measured Values Depending on the incoming request the LS Tankway response sent by the 4590 TSM contains one or more measurement values Depending on the reply and on the L8y parameters these values are subject to the following limits 5 1 Level Request L amp J Tankways Standard Table 5 1 lists the limits applied to the returned level value depending on the device type Table 5 1 Level Range Measured Value Device Type Value Range Granularity Units Level CCW Varec 0 0 to 95 5 1 16 inch ft CCW S8y 0 0 to 95 5 1 16 inch ft Ft amp 100 0 0 to 95 5 1 8 inch ft 1 32 inch 0 0 to 95 5 1 32 inch ft The following error handling
15. user to set the 4590 TSM LS interface to match the L amp J Tankway master settings 4 1 Configuration Settings 4 1 1 4 1 2 Address The 4590 TSM addresses provide unique identification for the host The 4590 TSM address is configured through the local display or ToF tool This address may range from 0 to 127 and must be unique for each L amp Tankway device on a loop Each 4590 TSM only responds when a query has been sent to its unique address by the host Protocol Variants The L amp J Tankway interface on the 4590 TSM supports two variants of the L amp Tankway protocol referred to as the L8j Standard and the L amp J Tankway Servo The choice of the communication variant Standard or Servo is done in the L amp J host system and defines which commands the host uses to poll the 4590 TSM as shown below e L Tankway Standard This communication variant provides only level and temperature The host uses L amp J commands 1 and 2 to poll the 4590 TSM for level and temperature A parameter in the 4590 TSM allows you to specify how the 4590 TSM encodes the level value when reporting level response to command 1 Table 2 describes the possible encoding formats e L Tankway Servo Using this protocol the 4590 TSM is able to report four measured values level temperature water level and density The L amp J host uses command 96 to poll the 4590 TSM for the four values together The data encoding is fixed when using the
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