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Communication

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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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Summary of Contents for 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: ...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 t...

Page 3: ...an 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...

Page 4: ...Modbus Plus X Link Driver User s Guide 38...

Page 5: ...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...

Page 6: ...s 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 Use...

Page 7: ...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...

Page 8: ...n 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 Onta...

Page 9: ...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 comp...

Page 10: ...upports 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...

Page 11: ...ion 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 paramete...

Page 12: ...coming integers will be expanded to floats the floats written to the Modbus Plus will be truncated When this option is off the floating points will be read and written as two consecutive integers Defa...

Page 13: ...oaded 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 t...

Page 14: ...loating point after retrieval when floating points are requested The type of Modbus Plus command that the driver generates depends on the address type specified The length of the data portion in a com...

Page 15: ...from a remote node on the network This access also requires you to specify when to read the data This type of data source does not require any programming in the remote node but generates extra netwo...

Page 16: ...The second type of destination access supported by the Modbus Plus driver is an X Link initiated write This destination defines an external address which the X Link uses to write the data to a remote...

Page 17: ...xxx INPUT STATUS 1xxxxx INPUT REGISTERS 3xxxxx HOLDING REGISTERS 4xxxxx where xxxxx represents a decimal number from 1 to 65535 4 5 External Addresses Mappings which require the X Link to originate co...

Page 18: ...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...

Page 19: ...r 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 The configuration software can be used to monito...

Page 20: ...Modbus Plus X Link Driver User s Guide 54...

Page 21: ...ver 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 b...

Page 22: ...Modbus Plus X Link Driver User s Guide 56...

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