Varec TankGate Interface 8315 Series User manual

Varec, Inc.
5834 Peachtree Corners East, Norcross (Atlanta), GA 30092 USA
Tel: [phone] Fax: [phone]
www.varec.com
IOM035GVAE0405
8315 Series TankGate Interface
Data Communication Gateway for L&J Tankway (MCG 1000,
MCG 1500, MCG 2000) Devices
Installation &
Operations Manual

i
8300
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 30096
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
FuelsManager® is a registered trademark of Varec, Inc. Copyright 2004
MODBUS® is a registered trademark of Modicon, Inc.

TankGate Interface
ii Installation and Operations Manual
Disclaimer of Warranties
The contract between the Seller and the Buyer states the entire obligation of the Seller.
The contents of this document 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 warranties set out in this document. The only warranties that apply
are those in the existing contract between the Seller and Buyer.
Varec, Inc. products have not been tested by Varec, Inc. under all possible operational
conditions, and Varec, Inc. may not have all the data relative to your application. The
information in this document 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, Inc. for assistance.
Limitations of Seller's Liability
In the event that a court holds that this document 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.
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 fitness 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.
Use of parts that are not manufactured or supplied by Varec, Inc. voids any Varec, Inc.
warranty and relieves Varec, Inc. of any obligation to service the product under warranty.
Varec, Inc. recommends the use of only Varec, Inc. manufactured or supplied parts to
maintain or service Varec, Inc. products.

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Safety Precaution Definitions
Caution! Damage to equipment may result if this precaution is disregarded.
Warning! Direct injury to personnel or damage to equipment which can cause injury to
personnel may result if this precaution is not followed.
Safety Precautions
READ AND UNDERSTAND THIS INSTRUCTION MANUAL BEFORE INSTALLING, OPERATING
OR PERFORMING MAINTENANCE ON THE VAREC 2900 FLOAT & TAPE TRANSMITTER.
FOLLOW ALL PRECAUTIONS AND WARNINGS NOTED HEREIN WHEN INSTALLING,
OPERATING OR PERFORMING MAINTENANCE ON THIS EQUIPMENT.

TankGate Interface
iv Installation and Operations Manual
Preface
This manual is intended for users of the TankGate. The Operating instruction Manual
contains eight chapters and an appendices.
Chapter 1 - Overview
This chapter provides a general overview of the TankGate such as features and product
specifications.
Chapter 2 - Hardware
This chapter describes the TankGate hardware components such as functional
relationships between motherboard and Communications module. It also provides
specific configuration information for the motherboard.
Chapter 3- Communications Module
This chapter describes the TankGate Communications module components and
configuration.
Chapter 4- Software
This chapter describes the TankGate software components such as communications and
functional relationships between major subsystems and components. It also provides
instructions on the different software blocks used for programming the TankGate.
Chapter 5- Installation
This chapter describes the procedures involved in installing and configuring the
TankGate.
Chapter 6- Using ViewRTU
This chapter describes how to use the ViewRTU program for configuration and
maintenance.
Chapter 7- Troubleshooting and maintenance
This chapter describes how to isolate faults and correct problems.
Appendix - Model Options
This appendix contains a list of model options for the Varec 8300 series TankGate
Interface

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Contents
1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.4 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.1 System Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.2 Software Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.3 Host Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.4 Modbus Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.5 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.6 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.7 Surge protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.8 Operating temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4.9 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4.10 Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4.11 Mechanical Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Hardware Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Motherboard Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2.1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.2 Switches and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.3 Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 TankGate Communications Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 8315 L&J Tankway Interface Module . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.1 ID DIP Switch (SW1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2.2 LED Indicators (D1-D6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2.3 External Power Connector (+48V) (J2) . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.4 Surge/Shield Ground Connector (J4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.5 Field Wiring terminal block (J3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4 8315 L&J Tankway Software Description . . . . . . . . . . . . . . . . . . 21
4.1 Software Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.1 Real-Time / Multitasking Executive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.2 Real-Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.3 Automatic Fault Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.4 Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1.5 Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1.6 Data Scanning Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Contents TankGate Interface
vi Installation and Operations Manual
4.1.7 Database Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1.8 System Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2 TankGate Software Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.2.1 TankGate 8315 Software Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.3 Database Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.1 Point Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3.2 Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.4 Gathering Point Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.4.1 Standard Request-Response Format . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.4.2 Change of State Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.4.3 Change of State-Related Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4.5 Modbus Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.5.1 Modbus Slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.5.2 Fixed Modbus Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.5.3 GWBLK method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.6 Clock (CLK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.6.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.7 Communications (COM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.7.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.7.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.8 Floating Point Register (FPREG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.8.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.9 Emulator (EMU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.9.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.9.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.10 EMU Gateway (EMUGW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.10.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.10.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.11 Gauging Systems Inc. Model 2000 Interface (GS2000) . . . . . . . . . . . . . . . 42
4.11.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.11.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.12 Gateway Block (GWBLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.12.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.12.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.12.3 Size Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.13 Integer Register (IREG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
4.13.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
4.14 Modbus Gateway (MODGW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4.14.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4.14.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4.15 Scaler Point (SCALER). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
4.15.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
4.15.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
4.16 System Information (SYS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

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4.16.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4.17 L&J MCG1000 Tank Gauge (LJ1000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
4.17.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
4.17.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4.18 L&J MCG1500 Tank Gauge (LJ1500) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
4.18.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
4.18.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
4.19 L&J MCG2000 Tank Gauge (LJ2000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
4.19.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
4.19.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
4.20 L&J Scanner (LJSCAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.20.1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.20.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.1 General Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.2 Installation Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.3.1 Mounting the TankGate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
5.3.2 Mounting the Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.3.3 Select the Unit address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.3.4 Wiring Up Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.3.5 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.3.6 Installing Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6 Using ViewRTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.2 System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.3 Installing ViewRTU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.4 Executing ViewRTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.4.1 ViewRTU window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6.5 The ViewRTU Menu Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6.5.1 The File Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6.5.2 The Point Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.5.3 The Config Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.5.4 The Communications Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
6.5.5 The Options Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
6.5.6 The Help Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
6.6 Using ViewRTU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
6.6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
6.6.2 Configuring Single Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
6.6.3 To modify a Value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
6.6.4 Configuring Multiple Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
6.6.5 Creating and Editing Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Contents TankGate Interface
viii Installation and Operations Manual
7 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
7.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
7.2 Troubleshooting the TankGate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
7.2.1 LED Displays under normal conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 97
7.2.2 LED Displays under Abnormal Conditions . . . . . . . . . . . . . . . . . . . . . . . 98
7.2.3 Using the TankGate Push-buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
7.2.4 Performing a Hard Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
7.3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
1 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
1.1 Ordering Structure Remote Terminal Unit TankGate . . . . . . . . . . . . . . . . . . . i
1.2 Ordering Structure NEMA 4 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
1.2.1 Modbus Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

1
8300 Overview
1Overview
The TankGate (83x series) unit acts as a tank gauge interface for data acquisition and host
gateway for tank farm, pipeline or refinery applications. Options are available for
interfacing to nearly any brand of tank gauge equipment or technologies, making it
possible to integrate float and tape transmitters, HTG, servo, magnetostrictive and radar
gauges.
Each TankGate Unit has a built-in motherboard and communications module based on
the local field protocol or tank gauging instrumentation requirements. The motherboard
contains a serial data link to enable communication to a host PC, PLC, or DCS..
Each intelligent module contains its own processor for fast and reliable field data
scanning. In-built compatibility of every module makes configuration of the internal
TankGate (83x series) database simple and straightforward.
1.1 Versions
The TankGate is available in a number of versions that can interface to a variety of field
devices and intelligent instrumentation via interface modules listed below:
• Model 8303 Dual RS-485 (MODBUS)
• Model 8308 TIWAY
• Model 8310 Mark/Space
• Model 8311 GPE
• Model 8312 Saab TRL/2
• Model 8314 Enraf
• Model 8315 L&J Tankway
• Model 8316 Barton
• Model 8317 Dual RS-232
1.2 Features
• Inputs are reported to Host Computer by Exception or Scanned Poll
• Built-in Software Function Library
• Surge Protection Conforming to ANSI/IEEE C37.90a-1974
• Host Communication via RS-232, RS-485, radio, modem or fiber optic link
• Industry Standard Protocol: Modbus
• Quick-Disconnect I/O Terminations
• Modular Construction for Optimum Expandability
• Non-Volatile Database
1.3 Applications
The TankGate is ideally suited for Tank Farm, Terminal, Pipeline and Refinery
applications. It is an effective solution used in SCADA applications.
• Level, temperature, pressure, and flow
• Local indication & alarms

Overview TankGate Interface
2 Installation and Operations Manual
1.4 Specifications
1.4.1 System Design
• 16-bit processor with optional intelligent communication modules
• Intelligent field device communications
• 128K bytes Non-Volatile Database Memory
• Serial RS-232 or RS-485
• Visual indication - 4 LEDs on main board indicate power and status
1.4.2 Software Functionality
• Tank gauge scanning - Data acquisition of measured values from connected
tank gauges/transmitters
• Service & diagnostics*
• Gauge diagnostics
• Read level, temperature and status data from gauge/transmitter
1.4.3 Host Communication
• Host comm. ports - 1
• Comm. type - Com #0: RS-232C
• Baud Rate 9600 baud
• Protocol - Modbus™ RTU protocol
• Mode - RTU mode, master and slave
• Media access - Master/Slave
• RS-232 or RS-485 communications
• RS-485 Maximum Cable Length (24 AWG), 4000 Feet
• RS-485 Maximum Multi-dropped Units, 32
1.4.4 Modbus Functionality
• Modbus™ commands - 3, 4, 5, 6, 15, 16
• Modbus™ mapping - Configurable
1.4.5 Power Supply
• Supply 100...240 Vac, 50/60 Hz
1.4.6 Power consumption
• 50 VA max (500 mA)
1.4.7 Surge protection
• Gas Discharge Tubes (GDTs) and clamping diodes on all field inputs, power
supply inputs and communications channels
1.4.8 Operating temperature
• -40...+185 °F (-40...+85 °C)

3
8300 Overview
1.4.9 Humidity
• 5...95% (non-condensing)
1.4.10 Storage temperature
• -40...+212 °F (-40...100 °C)
1.4.11 Mechanical Construction
• Dimensions (HxDxW) - 2.5" (64 mm) x 8.6" (220 mm) x 5.2" (133 mm)
• Material - Aluminum Powder coated
*Gauge/transmitter Dependent

Overview TankGate Interface
4 Installation and Operations Manual

5
8300 Hardware
2Hardware
The TankGate consists of an enclosure, motherboard, single tank gauge interface module
and connectors.
Figure 2-1: TankGate hardware components

Hardware TankGate Interface
6 Installation and Operations Manual
2.1 Hardware Block Diagram
A TankGate hardware functional block diagram is shown below. This diagram shows the
relationship between major subsystems and components in the TankGate.
Figure 2-2: TankGate functional block diagram
The heart of the TankGate is an Intel 80C188EB microprocessor operating at 18.432
MHz. Designed specifically for real-time embedded applications, the µP includes timer/
counters, an interrupt controller, and chip-select circuitry. It also includes 2 serial
channels that are designated as COM0 and COM1.
2.2 Motherboard Description
The motherboard description is broken into three sections. Each section identifies the
location of the components on the motherboard. When necessary, a brief description of
the component is provided. These sections are listed below:
• Power Supply
• Switches and Indicators
COM 0
COM 1
RS-232
RS-232/RS-485
128 K
256 k
uP
Serial 0
Serial 1
PROM
Tank Gauge
Interface Circuitry
NOVRAM

7
8300 Hardware
• Communications
Figure 2-3: The TankGate motherboard
2.2.1 Power Supply
• Unit AC Power terminal block (J2)
• Surge Protection terminal block (J4)
• Field Power terminal block (J3)
• Auxiliary DC Power Output terminal block (J8)
• AC Power fuses (500 mA - 250V 5x20 mm) (F1, F2)
• Field Voltage Selection Jumper (W3)
EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWARE HANDSHAKING
AB

Hardware TankGate Interface
8 Installation and Operations Manual
2.2.1.1 Unit AC Input Power terminal block (J2)
The Unit AC power terminal block is used to provide AC power to the TankGate. The
power requirements for the TankGate are 100-240 VAC, 50/60 Hz. The AC Input Power
terminal block is shown in the figure below:
Figure 2-4: AC Input terminal block
2.2.1.2 Surge Protection (Surge Gnd) terminal block (J4)
The Surge Gnd terminal block is used to connect the surge protection components (gas
tubes, MOVs) to earth ground. Ensure there is a low impedence path (< 1ohm) to earth
ground (a ground rod or grounding system).
2.2.1.3 Field Power (VFIELD) terminal block (J3)
The Field Power terminal block, referred to as VFIELD, is used to provide power for field
instruments. The output is configurable using jumpers (Jumper W3, discussed below).
Figure 2-5: field Power terminal block
2.2.1.4 Auxiliary DC Output Power terminal block (J8)
The Auxiliary power terminal block is used when external equipment must be powered
from the TankGate’s internal power supply. The triple output power supply provides +5,
EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWAREHANDSHAKING
AB
EARTH
NEUTRAL
LINE
SURGE GND
+
-
VFIELD
J2
J4
LINE
SURGE GND
A/TXD
B/RXD
GND
+
-
VFIELD COM1
J3
J4
EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWAREHANDSHAKING
AB

9
8300 Hardware
+15 and -15 Volts. These are rated 210 mA, 50 mA, and 5 mA, respectively. The DC
Power terminal block is shown below:
Figure 2-6: DC Input voltage terminal block
2.2.1.5 AC Power Fuses (F1,F2)
The AC Power Fuses provide protection for the AC input power. The two fuses, F1 and
F2, are rated at 500 mA, 250 V.
Figure 2-7: AC Power Fuse
2.2.1.6 Field Voltage Selection Jumper (W3)
The Field Voltage Selection Jumper W3 determines the voltage available at the VFIELD
terminals (J3). The Field Voltage can be configured for +24 VDC or +48VDC. At +24VDC,
EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWAREHANDSHAKING
AB
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
COM 0 AUX POWER
J8
J7
EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWAREHANDSHAKING
AB
F1
F2

Hardware TankGate Interface
10 Installation and Operations Manual
there is 230 mA of field power available. At +48VDC, there is 230 mA of field power
available.
Figure 2-8: Selection Jumper W3
2.2.2 Switches and Indicators
2.2.2.1 Reset push-button (SW3)
The RESET Switch is used to re-initialize the system hardware by causing it to go to a
known starting state. This switch may be pressed at any time; however, it will do the
following:
• Re initialize System Hardware
• Clear Scratch Memory
• Verify Database and Re initialize if Invalid
• Reset All Timers
• Enable Communications
Figure 2-9: Switches SW3 on the TankGate motherboard
Hard Reset
A special form of Reset is available for occasions when the battery backed-up data base
must be re initialized. This type of reset, the Hard Reset, can be performed before a
database is downloaded from a host PC.
Caution! The Hard Reset should be used as a last resort if the TankGate is not functioning. A
Hard reset clears the installed database. For the Hard Reset procedure, refer to the
Troubleshooting and Maintenance chapter.
EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWAREHANDSHAKING
AB
VFIELD=48V
VFIELD=24V
J8
J7
W3
EARTH
NEUTRAL
LINE
SURGE GND
A/TXD
B/RXD
GND
RTS
CTS
TXD
RXD
GND
+15V
+5V
GND
-15V
+
-
VFIELD COM1 COM 0 AUX POWER
VFIELD=48V
VFIELD=24V
RESET
RS232
RS485
COM1
HARDWAREHANDSHAKING
AB
RESET
SW3