Normally- Open Contact | GE GFK-0804B instruction

4

Normally- Open Contact

A Normally-Open contact passes power flow to the right when the associated reference is equal to 1.

Programming Software Instructions

If you are using the programming software, refer to the instructions on the opposite page.

Examples and HHP Instructions

The HHP programming keystrokes to create a Normally-Open contact depend on its position in a rung, as explained below.

Programming Normally-Open Contact at the Start of a Rung

When a Normally-Open contact is the first element of the rung, program a START, as shown below.

46114

Ladder Diagram

I1O17

Timing Diagram

			1
Input I1	0		1	0
Output O17	0		1

				0

Hand-held Programmer

STARTI1

OUTO17

The output O17 status follows the signal of input I1, when I1±1, output O17=1.

GFK-0804B

Chapter 4 The Micro PLC Instruction Set

4-5

Image 46

GE GFK-0804B manual Normally- Open Contact, Programming Software Instructions, Examples and HHP Instructions

Contents

GE Fanuc Automation GFL±002 Content of this Manual Related Publications Technical Assistance PrefaceWe Welcome Your Comments and Suggestions Contents Math Functions Appendix a Using Directories Appendix B Micro PLC Protocol Appendix E Data Acquisition, Logging, and Display Program Chapter Programming for the Micro PLC Programming Basics Device Designation Power Flow in a Program PLC Programs Micro PLC Instruction Set Programming with the Programming Software Programming Devices and FormatsProgramming on a Hand-held Programmer Memor y Map Memory Types and AddressesConstants and Register Values in a Program Non-retentive and Retentive Registers Start-up Scan Coil C1019 Special CoilsSec Clock C1018 Hold Output Coil C1021 Analog References Programming for an Analog Expander UnitAnalog Scaling Maximum Values Programming Examples Example #1 Chapter Programming with the Programming Software Using the Programming Functions Programming Operations Programming Functions Creating a Program Rung Running the Programming Software from a Hard Disk Running the Programming SoftwareRunning the Programming Software Directly from a Diskette Editing Basics Horizontal and Vertical Lines in a Rung Element Labels and Rung Labels Editing a Rung Element Editing a Completed RungSelecting a Rung to Edit Deleting a Rung Element Adding a Contact to a Rung Adding a Program Function to a Rung Replacing a Rung Element with a Similar Element Replacing a Rung Element with a Horizontal Line Replacing a Rung Element with a Dissimilar Element Deleting Rungs Moving Rungs Copying Rungs Searching for a Rung or Program Element Chapter Programming with a Hand-held Programmer Program Listing Program Transfer Entering Program Logic Hand-Held Programmer Key Operation and Displays Inserting a Rung Element Deleting a Rung Element, Rung or Program In Memory Deleting a Rung Element Searching Programming Examples Using the HHP Ladder Diagram Chapter Micro PLC Instruction Set Operation Ladder Symbol Description Instruction Set Summary Micro PLC Instruction Set Contacts General Programming Software Instructions for Contacts Examples and HHP Instructions Normally- Open ContactProgramming Software Instructions Programming Normally-Open Contact at the Start 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 Start of a Rung Programming a Normally-Closed Contact in Series Programming a Normally-Closed Contact in Parallel Positive Transition Contact Example and HHP Instructions Negative Transition Contact Example and HHP Instructions Coils Using Coil PairsGeneral Programming Software Instructions for Coils Output Coil Reset Set/Reset Coil PairExample and HHP Instructions Set Master Control Relay/End Coil Pair End Skip/End Coil Pair Skip Enter the other logic required by the Timer TimersProgramming Software Instructions for Timers Use the Accept F10 key to add the rung to the program On Timer Off Timer Programming Software Instructions for Counters CountersEnter the other logic required by the Counter Up Counter Down Counter Maximum Total Math FunctionsAddition ADD Addition R1+R2 ! R3 R1+ 1! R4 Subtraction SUB 1st number 2nd number Total in register R1± 5! R2 R3±R4 ! R5 Multiplication MUL Examples R1 x R2! R3 Division DIV Whole # Remainder Using Division and Multiplication Functions Together Divide Move Move FunctionsMove Select Move F5 from the Math/Move function keys Ladder Diagram Hand-held Programmer Block Move R001 0002 R004 R010 R020 R100 R1E 5! R10 O9E 8! O17 Specifying a Location in the Pointer Register Indirect MoveSelect I±Move F7 from the Math/Move function keys Start Move Equal Compare FunctionsExamples Greater Press Enter to add the function to the program Logic Operations Not Word Inclusive or IOR Exclusive or XOR Shift Register Right Entering the Number of Positions to Shift Shift Register Left Not Appendix Using Directories Loading and Saving Files MICRO.CFG File Using the Change Directory FunctionHints for a Basic Application Hints for an Advanced Application CMD\MICRO\PALLET CMD\MICRO\RIVETER CMD\MICRO\TRANSFER Appendix Micro PLC Protocol Communications Files Memory Addresses Communications Memory Types and AddressesCommunications Parameters Special Registers Read Discretes Communications ProtocolData Format Reply Write Discretes Read AnalogsRead Program Memory Write Analogs Read Status Write Program MemoryStatus Word Start Program Error ReplyError codes Stop Program 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 Sample Programs #include dos.h #include stdio.h #include ªMCROCOMM.Cº Sample Basic Program Appendix RTU Protocol Introduction Query Message TypesTransmission Sequence Broadcast Station Address Error Check FieldMessage Fields Function Code Character Format Timeout UsageMessage Termination Cyclic Redundancy Check CRC Generating Polynomial Hardware Implementation of CRC-16 Software Calculation of CRC±16 Example CRC±16 Calculation Address Function CRC±16 Query or Broadcast Message Length Less CRC Code RTU Message LengthFunction Code And Name Response Message Length Less CRC Code Message 01 Read Output Table Format Message DescriptionsResponse Message 02 Read Input Table Format Message 03 Read Registers Format Message 04 Read Analog Inputs Format Message 05 Force Single Output Format Message 06 Preset Single Register Format Message 07 Read Exception Status Format Message 16 Preset Multiple Registers Format Message 17 Report Device Type Format Invalid Address Error Response Communication ErrorsInvalid Function Code Error Response Invalid Query Message Serial Link Timeout Invalid Data Value Error ResponseQuery Processing Failure Error Response Invalid Transactions Appendix Communications 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 Writing Values to the PLC from another Application Viewing PLC Data in another DDE-compliant ApplicationOrdering Information Features Using the Display Software with Micro PLC Net Overview Appendix E Data Acquisition, Logging, and Display Program Equipment Required Startup Invoking Display Display Software Menus Auto Polling Operation Changing the Screen Colors Editing Summary Manual Mode Data Format Reading One Word of Input, Output, or Register Data Entering Manual ModeReading Multiple Bytes of Input, Output, or Register Data Creating a Bank of Registers for Downloading Data Writing Data to the Registers 15,T,1 Naming an Auto-polling Screen File Creating or Editing Autopolling ScreensSpecifying an Existing File to Edit Creating an Auto-polling Screen Formatting Strings for Auto-polling Screens Setup for Data Logging During Auto-PollingText for Auto-polling Screens Format Data Display String Format ± &XYYYYYZNExample Data Limits Format ± &L,X,YYYYY,LowLimit,Hilimit Hilimit Colors/logtime setup format ± &#,SC,BC,LT #,SC,BC,LT System Messages Creating or Editing System Messages Specifying the Device to Control System Message Display Auto-Polling During System Operation Executing an Auto-polling Screen Writing a Value to a Register Changing the DisplayPrinting the Screen Forcing an Output .LOG File Data LoggingHow Data Logging Works Renaming the .LOG File to Prevent Overwriting Data Data Type Table, Reference, Data Value Format of Logged DataTime Stamp Year, Month, Day, Hour, Minutes, Seconds Target ID Error Messages During Operation Error Writing to Device COM1 Appendix ProgrammingApplications Application #1 Flip / Flop Toggle Operation Application #2 Power Up One Shot Start±up Protection Application #3 Cascading Counters Application #4 Industrial ªStarting Circuitº +±± ±±+±±/±±+±±±±±±±±±±+±±±±±±±+±±±±±±±+±± ±± Index Index-2 Index-3