IBM Modbus Plus User manual
Modbus Plus
X-Link Driver
User’s Guide
Version 1.22
50 Northland Road
Waterloo, Ontario, CANADA
N2V 1N3
Tel: (519) 725-5136 Fax: (519) 725-1515
www.sstech.on.ca
Modbus Plus X-Link Driver User’s Guide
36
Publication Revision: 1.22
Publication Date: January 15, 1999
This document applies to the Modbus Plus X-Link Driver (SA85.DRV).
Copyright © 1999 SST, a division of Woodhead Canada Limited
All rights reserved. No portion of this document may be reproduced in any
form without the prior written permission of Woodhead Canada Limited.
SST is a trademark of Woodhead Industries, Inc. X-Link is a registered
trademark of Woodhead Canada Limited. All other trade names are
trademarks or registered trademarks of their respective companies.
SST strives to ensure accuracy in our documentation. However, due to
rapidly evolving products, on occasion software or hardware changes may
not have been reflected in the documentation. If you notice any inaccuracies,
please contact SST.
Written and designed at SST, 50 Northland Road, Waterloo, Ontario, Canada
N2V 1N3.
Modbus Plus X-Link Driver User’s Guide
37
Contents
1. Introduction...........................................................39
1.1 What is the Modbus Plus Driver?............................. 39
1.2 Why Do I Need This Manual?.................................. 40
1.3 How Do I Use This Manual?.................................... 41
1.4 Where Can I Find More Help? ................................. 42
2. Communication.....................................................43
2.1 Requirements............................................................ 44
2.2 Compatibilities.......................................................... 44
3. Configuration........................................................45
3.1 Configuration Parameters......................................... 46
4. Mappings...............................................................47
4.1 Data Types and Lengths ........................................... 48
4.2 Source Accesses ....................................................... 49
4.3 Destination Accesses ................................................ 50
4.4 Local Addresses........................................................ 51
4.5 External Addresses ................................................... 51
4.6 Status Counters......................................................... 52
5. Troubleshooting ...................................................53
6. Specification .........................................................55
6.1 Driver CMOS Storage Requirements ....................... 55
Modbus Plus X-Link Driver User’s Guide
38
Introduction
39
1
Introduction
1.1 What is the Modbus Plus Driver?
The Modicon Modbus Plus X-Link driver allows the X-Link to transfer data
to or from devices on the Modicon Modbus Plus network.
Modbus Plus X-Link Driver User’s Guide
40
1.2 Why Do I Need This Manual?
This manual describes the communication requirements and capabilities of
the Modbus Plus driver, the configuration parameters for the driver and the
mappings possible for the Modicon PLCs. It provides troubleshooting
information and technical specifications that can be referenced when
required.
For further information, refer to the SA85 Interface Card User's Guide,
Modicon IBM Host Based Devices User's Guide GM-HBDS-001 Rev. D. As
well, refer to the appropriate Modicon documents for information on
Modicon hardware, programming and network protocols.
If you need information on the X-Link unit or the X-Link configuration
software program, refer to the X-Link User’s Guide.
Introduction
41
1.3 How Do I Use This Manual?
The following conventions will help you better understand and use the
material in this manual.
Text you type appears in Courier font. For example, “Type
mkdir C:\XLINK to make a new X-Link
directory.”
Menu Names are italicized. You choose menu options. For
instance, “Choose the X-Link/New... command.”
Dialog Box Names are italicized. For example, “The File to Open
dialog box appears.”
Dialog Box Options are selected. For example, “From the Ports list,
select the COM port you are using.”
Text in Message
Boxes appears in quotation marks. For example: The
message “Already Downloaded - Reload?”
appears.
Keystrokes Single keystrokes appear in square brackets. Press
keys separated by “+” signs at the same time. For
example, “Press ALT + O,” means you should
press the [Alt] key and the [O] key at the same
time.
Mouse
or Keyboard? You may use either a mouse or the keyboard to
select options in the configuration program. There
are typically three different ways to choose a
command. This manual typically lists one or two
command options. Refer to the Shortcut Summary
in the X-Link User’s Guide for additional choices.
Modbus Plus X-Link Driver User’s Guide
42
1.4 Where Can I Find More Help?
If you have a question or problem that the manuals or on-line help do not
address, you can contact X-Link Technical Support by mail, fax or email, or
by phone during regular business hours (EST).
X-Link Technical Support
SST, a division of Woodhead Canada Limited
50 Northland Road
Waterloo, Ontario
N2V 1N3
Voice: (519) 725-5136
Fax: (519) 725-1515
Email: [email protected]
X-Link drivers and manuals are also available on the SST Web site,
www.sstech.on.ca.
Communication
43
2
Communication
Once configured, the X-Link emulates a station on the Modbus Plus
network. It can send messages to other stations and receive messages from
other stations. This section outlines the requirements and compatibilities of
this communication.
Modbus Plus X-Link Driver User’s Guide
44
2.1 Requirements
To communicate to the Modbus Plus network, the X-Link requires a
Modicon SA85 card. The X-Link Modbus Plus driver supports either the
redundant or non-redundant version of the SA85.
Installation and cabling requirements are detailed in the SA85 user manual,
Modicon IBM Host Based Devices User's Guide GM-HBDS-001 Rev. D.
2.2 Compatibilities
The Modbus Plus X-Link driver has been written to conform with the
specification in the Modicon IBM Host Based Devices User's Guide
GM-HBDS-001 Rev. D.
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