John Ridley provides comprehensive information on usage, design and programming for the Mitsubishi FX range of programmable logic controllers, in this step-by-step, practical guide. Professional engineers working with Mitsubishi PLCs, as well as students following courses focusing on these devices, will find this book to be an essential resource for this popular PLC family. Numerous worked examples and assignments are included, to reinforce the practical application of these devices, widely used in industry. Fully updated throughout from coverage of the FX PLC to now cover the FxN PLC family from Mitsubishi, John Ridley also focuses on use of the Fx2N - the most powerful and diverse in function of this PLC group. The second edition contains advanced topics along with numerous ladder diagrams and illustrative examples.

Key Features

· A hands-on approach to the programming, design and application of FX PLC based systems · Programmed using GX Developer software - used worldwide for the whole range of the FX PLC family · Covers Ladder Logic tester - the GX developer simulator that enables students and designers to test and debug their programs without a PLC · GX Developer demo available on a companion website for the book


Control and design engineers / technicians using Mitsubishi PLCs in industry. Coverage matched to requirements of undergraduate courses. Also, design and maintenance engineers: automotive, central heating, mains failure systems, food production, lifts & escalators, water, gas & electricity companies, etc.

Table of Contents

Preface. Acknowledgements. Introduction to PLC's: Hardware configuration. Base unit, extension units, extension blocks. Voltage supply's. Inputs - outputs. Sink - source connection. PNP and NPN sensors. Address range. Basic operation of a PLC. Gx-Developer start up procedure. Producing a ladder diagram: Entering a ladder diagram. Saving a project. Entering a ladder diagram. Instruction program. Search: step numbers, devices, instructions. Cross reference. Used devices. Copying a project i.e. saving with a new filename. Modifications. Serial transfer: Download. Communications Setup - COM1, COM2. Verification. Upload. Monitoring. PLC programs including counters: On line programming. Master control. PLC sequence controller: Forced I/O. Free line drawing. Safety and safety relays. Documentation: Comments. Statements. Notes. Printouts. Saving comments in the PLC. Entry ladder monitor. Converting a MEDOC project: Change of PLC type. Diagnostic fault finding. Special M coils. Set-reset programming. Trace. Data registers. Introduction to pro


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© 2003
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About the author

John Ridley

Affiliations and Expertise

PLC Systems Consultant MFI Runcorn, U.K. Formerly Senior training Engineer, Mitsubishi Electric BV, Hatfield, U.K.