GE GFK-0804B Preface

iii

GFK-0804

Preface

This book is the reference guide to programming the GE Fanuc Micro PLC.

Content of this Manual

Chapter 1. Programming for the Micro PLC: describes programming basics, the Micro

PLC instruction set, programming devices and formats, memory types and addresses,

constants and register values in a program, and special coils.

Chapter 2. Programming with the Programming Software: explains how to create and

edit programs using the programming software.

Chapter 3. Programming with a Hand-held Programmer: explains how to create and

edit programs using a Hand-held Programmer.

Chapter 4. The Micro PLC Instruction Set: explains in detail the instructions that can be

incorporated into an application program for the Micro PLC.

Appendix A. Using Directories: gives advice on organizing the Micro PLC directory structure

on your hard disk.

Appendix B. Micro PLC Protocol: the infor mation in this appendix is for advanced users

only. It explains programming to set up communications between the Micro PLC and a

host system.

Appendix C. RTU Protocol: describes the Remote Terminal Unit (RTU) serial

communications protocol, which can be used to provide communications between the

Micro PLC or other remote device and a host computer.

Appendix D. Communications Using Windows DDE: describes an available software

product that can be used to connect DDE-compliant Microsoft Windows programs

with data in a Micro PLC.

Appendix E. Data Acquisition, Logging, and Display Program: describes the Data

Acquisition, Logging, and Display Program software, which is provided on the Micro

PLC software diskettes.

Appendix F. Programming Applications: describes simple programming for: a flip-flop,

a powerup one-shot, cascading counters, and an industrial “starting circuit”.

Related Publications

GE Fanuc Micro PLC User’s Guide (GFK-0803): contains product specifications,

installation instructions, and general information needed to set up and use a Micro PLC.

GE Fanuc Micro PLC Self-Teach Manual (GFK–0811): a quick-start guide to

understanding and using the Micro PLC.

Contents

Main Warnings, Cautions, and Notes as Used in this Publication Warning Caution Preface Content of this Manual Related Publications GE Fanuc Micro PLC Users Guide (GFK-0803): contains product specifications, GE Fanuc Micro PLC Self-Teach Manual Page Chapter 2 Programming with the Programming Software 2-1 . . . . . . . . . . . . . . . . Chapter 3 Programming with a Hand-held Programmer 3-1 . . . . . . . . . . . . . . . . . . Page Appendix D Communications Using Windows DDE D-1 . . . . . . . . . . . . . . . . . . . . . . . Appendix E Data Acquisition, Logging, and Display Program E-1 . . . . . . . . . . . . . . Chapter 1Programming for the Micro PLC Programming Basics Device Designation Memory Location PLC Programs Power Flow in a Program The Micro PLC Instruction Set 1-5 Programming Devices and Formats Chapter 3 describes programming with a Hand-held Programmer. Programming with the Programming Software Programs created with the programming software are in traditional ladder logic format: Chapter 2 describes programming with the programming software. Memory Types and Addresses Memory Map Non-retentive and Retentive R egisters * R eserved Registers Constants and Register V alues in a Program Special Coils 0.1 Sec Clock (C1018) Start-up Scan Coil (C1019) Hold Output Coil (C1021) Programming for an Analog Expander Unit Analog Scaling Analog References Maximum Values Programming Examples Example #1: Example #2: 2 Chapter 2Programming with the Programming Software Using the Programming Functions Programming Operations " # 2-3 Programming Functions # Creating a Program Rung Running the Programming Software Running the Programming Software from a Hard Disk Running the Programming Software Directly from a Diskette Editing Basics Horizontal and V ertical Lines in a Rung Element Labels and Rung Labels Editing a Completed Rung Selecting a Rung to Edit Editing a Rung Element Deleting a Rung Element Page Page Replacing a Rung Element with a Dissimilar Element Deleting Rungs Moving Rungs Copying Rungs Searching for a Rung or Program Element 3 Chapter 3Programming with a Hand-held Programmer Page Entering Program Logic Inserting a Rung Element Deleting a Rung Element, Rung or Program In Memory Deleting a Rung Element Searching 3-8 Micro PLC Programmers Guide April 1994 Programming Examples Using the HHP Example 1 Example 2 Example 3 3-9 Example 4 Example 5 4 Chapter 4The Micro PLC Instruction Set 4-2 Micro PLC Programmers Guide April 1994 Instruction Set Summary Operation Ladder Symbol Description 4-3 Operation Ladder Symbol Description Contacts General Programming Software Instructions for Contacts Normally-Open Contact Examples and HHP Instructions Programming Normally-Open Contact at the Star t of a Rung Programming a Normally-Open Contact in Series Programming a Normally-Open Contact in Parallel Normally-Closed Contact Programming Normally-Closed Contact at the Star t of a Rung Programming a Normally-Closed Contact in Series Programming a Normally-Closed Contact in Parallel Positive Transition Contact " Negative Transition Contact # Coils Using Coil Pairs General Programming Software Instructions for Coils Output Coil Set/Reset Coil Pair Set Reset Master Control Relay/End Coil Pair MCR End Skip/End Coil Pair Skip End Timers Programming Software Instructions for Timers On Timer Off Timer Counters Programming Software Instructions for Counters Up Counter Down Counter Math Functions Addition (ADD) Maximum Total Page Subtraction (SUB) Page Multiplication (MUL) Examples: Page Division (DIV) Examples: Using Division and Multiplication Functions T ogether Move Functions Move Page Block Move Option Example Description Page Indirect Move Specifying a Location in the Pointer Register ! Page Compare Functions Examples Page Logic Operations Word AND Inclusive OR (IOR) Exclusive OR (XOR) Shift Register Right Entering the Number of Positions to Shift Shift Register Left Example Entering the Number of Positions to Shift NOT A Appendix AUsing Directories Loading and Saving Files A Using the Change Directory Function The MICRO.CFG File Hints for a Basic Application A Hints for an Advanced Application B Appendix BMicro PLC Protocol Communications Files Communications Memory T ypes and Addresses I/O Memory Addresses * Special Registers Communications Parameters Communications Protocol Data Format Read Discretes Read Analogs Read Program Memory Write Discretes Write Analogs Write Program Memory Read Status Start Program Stop Program Error Reply Communications Functions Microsoft C (Large Model: Compile w/ -AL Option) Microsoft C (Small Model: Compile w/ -AS Option) Turbo C (Large Model: Compile w/ -ml Option) Turbo C (Small Model: Compile w/ -ms Option) IBM Compiler BASIC B-13 Sample Programs B-14 Micro PLC Programmers Guide Aptil 1994 Sample BASIC Program C Appendix CRTU Protocol Introduction Message Types Query Normal Response Error Response Broadcast Message Fields Station Address Function Code Information Field Error Check Field Character Format Message Termination Timeout Usage Cyclic Redundancy Check (CRC) The Generating Polynomial Hardware Implementation of CRC-16 Software Calculation of CRC16 Example CRC16 Calculation C-8 Micro PLC Programmers Guide April 1994 RTU Message Length Message Length Less CRC Code Response Message Length Less CRC Code Message Descriptions Message (01): Read Output Table Message (02): Read Input Table Message (03): Read Registers Message (04): Read Analog Inputs Message (05): Force Single Output Message (06): Preset Single Register Page Message (16): Preset Multiple Registers Message (17): Report Device Type Communication Errors Invalid Query Message Invalid Function Code Error Response (1) Invalid Address Error Response (2) Invalid Data Value Error Response (3) Query Processing Failure Error Response (4) Serial Link Timeout Invalid Transactions D Appendix DCommunications Using Windows DDE Limits of the Demonstration Software Features of the Micro PLC DDE Driver Software Simple Demonstration using Microsoft Word Demonstration using Microsoft Excel Viewing PLC Data in Windows Viewing PLC Data in another DDE-compliant Application Writing Values to the PLC from another Application Ordering Information E Appendix EData Acquisition, Logging, and Display Program Features Using the Display Software with Micro PLC Net Overview Page Equipment Required Startup Invoking DISPLAY The Display Software Menus To Create or Execute Auto-polling Screens: To Manually Poll a Micro PLC: To Change Data in a Micro PLC: To Download Registers to a Micro PLC: To Change the Software Screen Colors: Changing the Screen Colors Editing Summary Manual Mode Data Format Page Creating a Bank of Registers for Downloading Data Writing Data to the Registers Creating or Editing Autopolling Screens Naming an Auto-polling Screen File Specifying an Existing File to Edit Creating an Auto-polling Screen Formatting Strings for Auto-polling Screens Text for Auto-polling Screens Setup for Data Logging During Auto-Polling Data Display String Format &XYYYYYZN Example: Data Limits Format &L,X,YYYYY,Low_Limit,Hi_limit Example: Colors/logtime setup format &#,SC,BC,LT Example: System Messages Creating or Editing System Messages Specifying the Device to Control System Message Display Triggering Display of a System Message During Auto-polling Operation Auto-Polling During System Operation Executing an Auto-polling Screen Page Data Logging How Data Logging Works The .LOG File Renaming the .LOG File to Prevent Overwriting Data The Format of Logged Data Time Stamp (Year, Month, Day, Hour, Minutes, Seconds) Data Type (Table, Reference, Data Value) Target ID Error Messages During Operation F Appendix FProgramming Applications Application #1: FLIP / FLOP (Toggle Operation) Application #2: Power Up One Shot (Startup Protection) Application #3: Cascading Counters F-5 Application #4: Industrial Starting Circuit Page A B C D E L M N O P Q R S T U