Mitsubishi Electronics FX1S manual Annunciator Flags

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FX Series Programmable Controllers

Devices in Detail 4

4.4.4Annunciator Flags

FX1S

FX1N

FX2N FX2NC

Some state flags can be used as outputs for external diagnosis (called annunciation) when certain applied instructions are used. These instructions are;

ANS function 46: ANnunciator Set - see page 5-47

ANR function 47: ANnunciator Reset - see page 5-47

When the annunciator function is used the controlled state flags are in the range S900 to S999 (100 points). By programming an external diagnosis circuit as shown below, and monitoring special data register D8049, the lowest activated state from the annunciator range will be displayed.

Each of the states can be assigned to signify an error or fault condition. As a fault occurs the associated state is driven ON. If more than one fault occurs simultaneously, the lowest fault number will be displayed. When the active fault is cleared the next lowest fault will then be processed.

This means that for a correctly prioritized diagnostic system the most dangerous or damaging faults should activate the lowest state flags, from the annunciator range. All state flags used for the annunciator function fall in the range of battery backed/ latched state registers.

Monitoring is enabled by driving special auxiliary relay M8049 ON.

State S900 is activated if input X0 is not driven within one second after the output Y0 has been turned ON.

State S901 is activated when both inputs X1 and X2 are OFF for more than two seconds.

If the cycle time of the controlled machine is less than ten seconds, and input X3 stays ON, state S902 will be set ON if X4 is not activated within this machine cycle time.

If any state from S900 to S999 is activated, i.e. ON, special auxiliary relay M8048 is activated to turn on failure indicator output Y10.

The states activated by the users error / failure diagnosis detection program, are turned OFF by activating input X5. Each time X5 is activated, the active annunciator states are reset in ascending order of state numbers.

M8000			M8049
			M8049
Y0	X0	FNC46
		ANS T0	K10	S900
X1	X2	FNC46
		ANS T1	K20	S901
X3	X4	FNC46
		ANS T2	K100 S902
M8048				Y10
				Y10
X5				FNC47
			ANR (P)

4-9

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Contents Programming Manual Page Foreword FX Series Programmable ControllersFX Series Programmable Controllers FAX Back Combined Programming Manual J FX Series Programmable Controllers Software Warnings Hardware WarningsFX Series Programmable Controllers Contents STL Programming Applied Instructions Rotation And Shift Functions 30 to External FX Serial Devices Functions 80 to Execution Times And Instructional 10-1 Viii FX Series Programmable Controllers Chapter Contents Overview IntroductionWhat do You Need to Program a PLC? What is a Programmable Controller?Current Generation CPU all versions Special considerations for programming equipmentManual name Number FX Base Unit Hardware Assocciated ManualsManual name Number FX DU, GOT and DM units Memo Basic Program Instructions FX Series Programmable ControllersBasic Program Instructions Detailed device information What is a Program?Outline of Basic Devices Used in Programming Example How to Read Ladder LogicProgram example Load, Load InverseOUT instruction Out Timer and Counter VariationsDouble Coil Designation Use of dual coilsLast coil effect Peripheral limitations And, And InverseORI Or, Or InverseSingle Operation flags M2800 to M3071 Load Pulse, Load Trailing PulseLDF ANF OUT Pulse, And Trailing PulseORF ORB Or Pulse, Or Trailing PulseSequential processing limitations Or BlockBatch processing limitations ANB BlockMPS, MRD and MPP usage 13 MPS, MRD and MPPMultiple program examples MCR Master Control and ResetNested MC program example Resetting timers and counters Set and Reset16.1Basic Timers, Retentive Timers And Counters Timer, Counter Out & ResetRetentive timers High Speed Counters Bit countersAvailability of devices Normal 32 bit CountersLeading and Trailing Pulse PLFUsages for INV InverseNo Operation No OperationProgram scan 20 EndMemo STL Programming FX Series Programmable ControllersSTL Programming General note What is STL, SFC And IEC1131 Part 3?Look Inside an STL How STL OperatesEach step is a program Activating new states How To Start And End An STL ProgramCombined SFC Ladder representation Embedded STL programsReturning to Standard Ladder Initial StepsTerminating an STL Program Moving Between STL Steps Using SET to drive an STL coilOut is used for distant jumps Using OUT to drive an STL coilOUT is used for loops and jumps Basic Notes On The Behavior Of STL programs Rules and Techniques For STL programsT001 K20 K50 Method 2 Special Single Pulse Flags Single Signal Step ControlMethod 1 Using locking devices Restrictions on using applied instructions Restrictions Of Some Instructions When Used With STLUsing ‘jump’ operations with STL STL OUT SET Using STL To Select The Most Appropriate ProgramLimits on the number of branches Using STL To Activate Multiple Flows SimultaneouslyLimits on the number of branches Instruction Format General Rules For Successful STL BranchingGeneral Precautions When Using The FX-PCS/AT-EE Software Simple STL Flow Programming ExamplesSET STL Identification of normally closed contactsSelective Branch/ First State Merge Example Program Points to noteFull STL flow diagram/program Advanced STL Use Devices in Detail FX Series Programmable ControllersDevices in Detail Device Mnemonic Configuration detailsInputs Available devicesAlias O/P OutputsDevice Mnemonic Y General Stable State Auxiliary Relays Auxiliary RelaysDevice Mnemonic M External loads Battery Backed/ Latched Auxiliary RelaysSpecial Single Operation Pulse Relays Special Diagnostic Auxiliary Relays General Stable State State Relays State Relays Device Mnemonic S PLC FX 1S FX 1N FX 2N Battery Backed/ Latched State RelaysIST instruction Assigned statesMonitoring STL programs STL/SFC programmingAnnunciator Flags Device Mnemonic P PointersJumping to the end of the program Device availabilityPointer position Interrupt PointersAdditional applied instructions Nested levelsInput Interrupts Timer InterruptsRules of use Disabling Individual Interrupts Driving special auxiliary relaysDisabling high speed counter interrupts Additional notesExample device usage N/A Constant KConstant H Device Mnemonic KDevice Mnemonic T TimersTimer accuracy Driving special auxiliary coils General timer operationSelectable Timers Retentive Timers Using timers in interrupt or ‘CALL’ subroutinesCondition Internal timer accuracyTimers Used in Interrupt and ‘CALL’ Subroutines Timer AccuracyDevice Mnemonic C Setting ranges for countersCounters High speed countersGeneral/ Latched 16bit UP Counters Battery backed/latched countersGeneral/ Latched 32bit Bi-directional Counters Battery backed/ latched countersSelecting the counting direction Further uses None Basic high speed counter operationBasic High Speed Counter Operation Driving high speed counter coilsAvailability of High Speed Counters Input assignmentCounter Speeds Calculating the maximum combined counting speed on FX1S Using the SPD instruction Device specificationSetting range Direction settingRST Device size 11.5 2 Phase Bi-directional Counters C246 to C25011.6 A/B Phase Counters C252 to C255 Example device usage None Data RegistersDevice Mnemonic D General Use Registers Data register updatesData retention Special Diagnostic Registers Using the FX2-40AW/APUse of diagnostic registers Battery Backed/ Latched RegistersProgram memory registers Special caution when using FX1SWriting to file registers File RegistersUses Externally Adjusted RegistersAvailable forms Index RegistersUse of Modifiers with Applied Instruction Parameters Device Mnemonic V,ZMisuse of the Modifiers Using Multiple Index RegistersModifying a Constant Bit Devices, Individual and Grouped Bits, Words, BCD and HexadecimalAssigning grouped bit devices Moving grouped bit devicesAssigning I/O Interpreting Word Data Word DevicesFX Series Programmable Controllers Word Data Summary Binary Coded Decimal value= ErrorInverted7 Additional1 14.4 Two’s ComplimentSome useful constants Floating Point And Scientific NotationScientific Notation Floating Point Format FLT