Scan Time | Mitsubishi Electronics FR-A700, 700 Series instruction

Scan Time

3.7 Scan Time

(1)Scan time

A scan time is a time from when sequence program operation is executed from step 0 until step 0 is executed again.

The scan time of each scan is not equal, and changes depending on whether the used instructions are executed or not.

Scan time

END		0		END		0

Sequence program

END processing

Timer/counter count processing

Self-diagnostic checks

Fig 3.8 Scan Time

(2)Scan time confirmation

(a)The scan time from the END instruction to the next END instruction is timed in the PLC, and stored into the special registers D9017 to D9019 in units of 10ms.

1)Data stored into special registers D9017 to D9019

•D9017 ........... Minimum value of scan time

•D9018 ........... Present value of scan time

•D9019 ........... Maximum value of scan time

2)Scan time accuracy

The accuracy of the scan time observed in the PLC is 10ms.

For example, when the D9018 data is 5, the actual scan time is 40ms to 60ms.

SEQUENCE PROGRAMMING

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Mitsubishi Electronics FR-A700, 700 Series specifications Scan Time

Contents

PLC Function Error Code ListCommunication Sequence Programming Inverter Status Monitoring, Special Registers for Control Analog I/O functionPaluse train input function PID control Device Map CC-Link I/O Specifications Buffer Memory CC-Link ParametersOverview Program Makeup Programming Languages Counters C Function ListKeyword Registration Bit Device Processing Method How to Read the Error Code 172 Basic Instructions 140155 171 Using GX Developer for RS-485 Communication PLC Function Function Block Diagram PLC Function Specifications A700 Sequence Section System Configuration System configuration exampleCommunication specifications Support GX Developer ver.8.0 or more GX Developer Setting Type Maker Prior to Sequence Program Creation Precautions for sequence program creationUsable main GX Developer functions Sequence program execution key Sequence program write Setting list of built-in PLC function parameter GX Developer Default Setting Range Usable device range 1 I/O device map Device MapDevice Name Remarks RAM Internal relay M device map Data register D device mapSpecial relays M0 to M63 Device Map Special registers Name Description Map Inverter operation Input terminal D9205 For control D9206 Special registers D9207 PID Device Name Setting Data Example Data that can be read at all timesOperation monitor Unit Condition Data Alarm definition read program example Error No Error Name Details Operation mode setting read D9140 Data read timing chartOperation mode setting read program example Set frequency RAM D9141 Set frequency RAM read program exampleSet frequency Eeprom D9142 Set frequency read Eeprom program example Data write timing chart Device Name When Pr =2, switching is performed as shown below Operation mode setting write D9143 Data are as followsOperation mode setting write program example Set frequency write RAM program example Set frequency RAM D9144Following program changes the set frequency RAM to 30Hz Set frequency write Eeprom program example Set frequency Eeprom D9145Following program changes the set frequency Eeprom to 10Hz Alarm definition batch clear program example Alarm definition batch clear D9146Following program batch-clears the alarm history Device No Setting Description Details Parameter clear D9147All parameter clear program example Following program clears all parameters Inverter operation status control Device No Name Data Access Enable ConditionInverter operation status control D9148 B15 B12B11 B8B7 B4B3 1 1 1 1 1 1 1 1 1 Invalid Inverter parameter access error D9150 Inverter status D9151Parameter Hffff is stored into D9150. Normal Inverter Parameter Read/Write Method Reading the inverter parameters Inverter parameter data read timing chart Writing the inverter parameters Inverter parameter data write timing chart Device Inverter Initial Setting Minimum Setting User Area Read/Write MethodUser parameter read/write method Range Unit Device Terminal Name Setting Analog I/O functionAnalog input Analog output Parameter Name Initial Setting Description Value Range Device No Name Setting Description RangePaluse train input function Selection PID control Setting Description RangeParameter Name Initial Value Device No Name Setting Description Range Name Initial Setting Minimum Setting Range Unit Inverter Operation Lock Mode SettingSetting Description Memo Communication System configuration example Function block diagram CPU PLC CPU CC-Link Extended Setting Pr Parameter Initial Setting Name CC-Link Description NumberCC-Link Parameters Remote register function can be extended CC-Link I/O Specifications Remote I/O Data I/O image Remote resisterAddress Description RAM, Eeprom Address Description Upper Bits Same as when Pr = 112 Refer to RWrn+7 Sixth monitor value RWwn+8 PLC function Remote output signals Master module to inverterFR-A7NC Buffer MemoryStation Buffer Memory Address Station Buffer F2H Remote registers Pr.544=100 Master module to inverterFR-A7NC Station Buffer Memory Address Remote registers Pr.544=100 InverterFR-A7NC to master module Processing Method Scan Time Instruction FormatOperation Processing Method of PLC Function Numerical Values Usable in Sequence Program Overview Outline of Operation Processings Operation Processings of Built-in PLC function END processing RUN and Stop Operation Processings Program Makeup Programming Languages Relay symbolic language Ladder modeLadder Blocks Operation Processing Sequence Logic symbolic language List mode Logic symbolic language Operation Processing Method of PLC Function Operation Processing Method of Built-in PLC Function I/O Processing Method What is refresh system?Control system is a refresh system Response delay in refresh system When Y1E turns on earliestWhen Y1E turns on latest Ladder example Scan Time Numerical Values Usable in Sequence Program Decimal Code Hexadecimal Code Binary Code BIN Binary Code DEC Decimal Code BIN Binary Code HEX HEX Decimal Description of devices Device List Inputs, Outputs X, Y 10 Inputs X, Outputs Y Inputs Outputs Y Internal Relays M 14 Internal Relay Timers T 5 100ms, 10ms and 100ms retentive timers15 Timing Chart Timing chart Timer processing method and accuracy 16 Timing Chart Timer timing method Counters C 18 Count Ladder 19 Counter Counting Method Count processing in refresh systemCounting method Maximum counting speed of counter Data Registers D Special Relays, Special Registers Special Application/Description Relay Function List Function Description 21 Timing Chart for RUN/STOP Using Remote RUN Contact Refer to the GX Developer manual for details Stop RUN/STOP Watchdog Timer Operation clog up monitor timer Self-diagnostic Function Error-time operation mode CPU Status Error Definition Operation Keyword Registration YES Instruction Format Source S Specify the numerical value to be used forProgram creation, it is fixed and cannot be Changed during program execution 25 Digit Designation Setting Range for 16-bit Instruction Bit Device Processing Method20.1 1-bit processing Digit designation processing 27 Ladder Examples and Processingse Numerical value setting method 1 Decimal number Handling of Numerical ValueHexadecimal number Decimal Notation Hexadecimal Notation Operation Error Error processing How to use the instruction list Indicates the symbol used in the ladder diagramInstructions List Indicates Destination Operation result Symbol Execution Condition Symbol Processing 23.2 Sequence instruction 106 Basic instructions OR= ∗ P Application instructions Description Description of the Instructions, the instructions are described in the following format Sequence Instructions LD, LDI, AND, ANI, OR, ORI Functions Execution ConditionsLD, LDI AND, ANI LD , LDI , Program ExamplesANI , or , ORI Block a Block B ANB ORB Program Examples ANB, ORB 118 119 MRD MPSMPP 121 Program Example Program using MPS, MRD and MPPMPS , MRD , MPP Output Instructions Bit device, timer, counter ... OUT OUT Instruction Operation Result Coil Contacts Outc OuttContact OUT Program ExamplesProgram that outputs to the output module Output Instructions Device set, reset ... SET, RST SETRST Device Status SET , RST SET and RST instructions are executed every scanOperations of SET and RST instructions Program that resets the data register contents to Program that resets the 100ms retentive timer and counter PLS Digit Flag Program that executes the PLF instruction when X9 turns off Program that executes the PLS instruction when X9 turns onPLF Shift Instructions Bit device shift ... SFT, Sftp Program Example Program that shifts the Y7 B data when X8 turns onSFT Master Control Instructions Master control set, reset MC, MCR 134 Display in ladder mode MCR 136 End Instruction Sequence program end ... END Other Instructions No operation ... NOP NOP Contact short-circuit AND, ANI Symbol Basic InstructionsComparison Operation Instructions Instruction 141 S1 = S2 S1 S2S1 ≤ S2 S1 ≠ S2 S1 = S2 S1 ≤ S2 Program that compares the X0-F data and D3 data Program that compares the BCD value 100 and D3 dataProgram that compares the BIN value 100 and D3 data Program that compares the D0 and D3 data Arithmetic Operation Instructions 145 146 Is made at the highest bit b15 Addition/subtraction command 149 150 151 Operation Errors Data Transfer Instructions Data Transfer Instructions Bit data transfer ... MOV, MovpData transfer instructions are designed to transfer data MOV Program that stores 155 into D8 in binary when X8 turns on Program that stores the input X0-B data into D8 Application instructions Logical Operation Instructions Wand Wand 157 158 WOR WOR P 161 Wxor Wxorp Wxor 164 Wxnr Wxnr Wxnr P 167 168 NEG Negp 170 Error Code List Error Error Name Code How to Read the Error CodeDefinition and Cause Corrective Action 173 Memo Appendix Appendix1 Instruction Processing Time Device 177 Revisions Print Date Manual Number Revision