Related Manuals for IBM Modbus Plus
Summary of Contents for 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...
- Page 2 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.
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Page 3: Table Of Contents
Modbus Plus X-Link Driver User’s Guide 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. - Page 4 Modbus Plus X-Link Driver User’s Guide...
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Page 5: Introduction
Introduction 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. -
Page 6: Why Do I Need This Manual
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. -
Page 7: How Do I Use This Manual
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. -
Page 8: Where Can I Find More Help
Modbus Plus X-Link Driver User’s Guide 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). -
Page 9: Communication
Communication 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. -
Page 10: Requirements
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. -
Page 11: Configuration
Configuration 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. -
Page 12: Configuration Parameters
The memory base address switches are located near the bus connector on the SA85 and are not accessible from the outside of the X-Link. The Modbus Plus node address must also be set on the SA85. The switches to set the station address are accessible from the end of the X-Link. -
Page 13: 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... -
Page 14: Data Types And Lengths
The type of Modbus Plus command that the driver generates depends on the address type specified. The length of the data portion in a command is constrained by the Modbus Plus protocol. -
Page 15: 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. -
Page 16: Destination Accesses
PLC poll the data. The last type of destination access supported is global data. The X-Link writes the values into the global data table for the Modbus Plus station that is X-Link. -
Page 17: Local Addresses
To route directly to another PLC on the Modbus Plus, simply specify the node number in decimal. If you are routing to a node through any routes, the route is specified as up to five node numbers with periods between them. -
Page 18: Status Counters
Modbus Plus X-Link Driver User’s Guide 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. -
Page 19: 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 your settings. - Page 20 Modbus Plus X-Link Driver User’s Guide...
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Page 21: Specification
6.1 Driver CMOS Storage Requirements Driver Code and Parameters Each Global Data Read Address Each Global Data Write Address Each Internal Address Each External Address Each Status Counter Address Specification Specification 16 Kbytes 4 bytes 3 bytes 5 bytes 10 bytes 2 bytes... - Page 22 Modbus Plus X-Link Driver User’s Guide...