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IBM Modbus Plus - page 1
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 ...
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IBM Modbus Plus - page 2
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 ...
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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 ...
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Modbus Plus X-Link Driver User’s Guide 38 ...
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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. ...
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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 refer ...
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IBM Modbus Plus - page 7
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... comm ...
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IBM Modbus Plus - page 8
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 Northla ...
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IBM Modbus Plus - page 9
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. ...
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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 ...
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IBM Modbus Plus - page 11
Configuration 45 3 Configuration When you download a driver to the X-Link, you must set configuration parameters to control the interface between the driver and the required hardware. This section details the configuration parameters for the Modbus Plus driver. ...
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IBM Modbus Plus - page 12
Modbus Plus X-Link Driver User’s Guide 46 3.1 Configuration Parameters The Modbus Plus driver is distributed in the file SA85.DRV. Once the SA85.DRV is loaded into the X -Link, the following parameters are required: Card Segment The memory address for the SA85 card. The card requires 2K of memory in the range of C000 to EF80. Default is D000, sec ...
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IBM Modbus Plus - page 13
Mappings 47 4 Mappings Once the X-Link has been loaded, you can create mappings to transfer data from one network to the other. This section outlines the mapping options supported by the Modbus Plus driver. For information on what mappings are or how they work, please refer to the X-Link User's Guide . ...
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IBM Modbus Plus - page 14
Modbus Plus X-Link Driver User’s Guide 48 4.1 Data Ty pes and Lengths The Modbus Plus Driver supports three X-Link data formats; Bits and Integers, as well as Floats. The Modbus Plus protocol does not support floating point. The driver will truncate any floating point numbers before transmission, and expand the integer numbers to floating point a ...
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IBM Modbus Plus - page 15
Mappings 49 4.2 Source Accesses The Modbus Plus driver supports four possible source accesses. The first source defines a local address which allows any device on the Modbus Plus network to write the data to the X-Link. This type of source is ideal for data that changes infrequently, but must be forwarded immediately, such as errors or exceptions. ...
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IBM Modbus Plus - page 16
Modbus Plus X-Link Driver User’s Guide 50 4.3 Destination Accesses The Modbus Plus driver supports three possible destination accesses. The first destination defines a local address which allows any device on the Modbus Plus network to read the data from the X-Link. This type of destination can be used to allow a PLC to read back the data it has ...
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IBM Modbus Plus - page 17
Mappings 51 4.4 Local Addresses When a mapping is created which allows a PLC to access data within the X -Link, a local address dialog box must be completed. The information required to complete a local address definition is the class of data to access (Coils, Input Status, Input Registers or Holding Registers) and the offset into the data table. I ...
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IBM Modbus Plus - page 18
Modbus Plus X-Link Driver User’s Guide 52 4.6 Status Counters The status counters are maintained within the Modbus Plus driver for logging events and errors. The Status menu allows you to monitor some of these counters. As well, the status counters can be accessed as a data source for mappings. The Modbus Plus driver status counters include count ...
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IBM Modbus Plus - page 19
Troubleshooting 53 5 Troubleshooting If you cannot communicate with your X-Link, refer to the troubleshooting section in the X-Link User's Guide. If you can communicate with your X-Link, but cannot monitor the status of your Modbus Plus driver, you most likely have the memory address set incorrectly. Refer to your SA85 User Manual to confirm y ...
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Specification 55 6 Specification 6.1 Driver CMOS Storage Requirements Driver Code and Parameters 16 Kbytes Each Global Data Read Address 4 bytes Each Global Data Write Address 3 bytes Each Internal Address 5 bytes Each External Address 10 bytes Each Status Counter Address 2 bytes ...
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