11-7 | LG Electronics 120S instruction

Chapter 11 Troubleshooting

11.2.5Troubleshooting flowchart used when a program cannot be written to the CPU part

The following flowchart shows the corrective action procedure used when a program cannot be written to the PLC module.

Program cannot be written to the PC CPU

No

Is the mode-setting switch set the re

mote STOP?

Switch to the remote STOP mode and execute the program write.

Yes

Yes

Is ERR. LED blinking?

After reading error code by using peripheral device, correct the contents.

No

Complete

11-7

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LG Electronics 120S user manual 11-7

Contents

MASTER-K 120S series Safety Instructions Design Precautions Not doing so could cause a malfunction, failure or drop Poor connection could cause an input or output failure Not doing so could result in erroneous operation Such debris could cause fire, damage, or erroneous operation Not doing so can cause a malfunction Doing so could cause electric shock or erroneous operationNot doing so could cause poisonous pollution or explosion Revision History Contents Power Supply / CPU Communication I/F Module ················· 4 100 Input and Output ModulesUsage of Various Functions 104 Installation and Wiring Communication Function Maintenance Troubleshooting General Guide to Use This Manual Features FAM TerminologyKglwin RTC Output Contact Expansion Overall ConfigurationBasic system G7L-CUEB, G7L-CUEC MASTER-K120S System Configuration Cnet I/F systemCommunications system MASTER-K120SMASTER-K120S RS-232C ⇔ RS-422 Converter 1n Communications systemMASTER-K120S G7L-CUEB G7L-CUEC Main Unit Product Functional ModelProduct Functional Block CPU Main Unit Standard type Main Unit Economic type Expansion Modules General Specifications General Specifications RUN LED Main UnitPWR LED LED 1 60-points main unit Standard Name Description 2 40-points main unit Standard 3 30-points main unit Standard 4 20-points main unit Standard 5 30-points main unit Economic 7 14-points main unit Economic Names of Parts 6 20-points main unit Economic8 10-points main unit Economic 1 20points I/O Module Expansion I/O Module2 10points I/O Module Names of Parts 3 8points I/O Module Special Module 1 A/D·D/A Combination Module Names of Parts 2 D/A Conversion Module G7F-DA2I Names of Parts Analog timer Module RTD Input Module Cnet I/F Module Communication I/F ModuleFnet I/F Module Names of Parts Pnet I/F Module Option ModuleDeviceNet I/F Module Economic Type Power Supply SpecificationsStandard Type DR/DRT/DT60U D0000 ~ D4999 Data register Operation modes CPU SpecificationsItems Specifications Remarks RUN, STOP, PAUSE, Debug Items Specifications JOG K7M-DR10UE K7M-DR14UE K7M-DR20UE K7M-DR30UE Power Supply / CPU Economic TypeRUN, STOP, Pause Modbus protocol support RS-232C 1port Cnet I/F Function Remarks Dedicated protocol supportUser defined protocol support RS-485 1 port Operation Processing Method Operation ProcessingCyclic operation Momentary power failure exceeding 10 ms Operation Processing at Momentary Power Failure OccurrenceMomentary power failure within 10 ms Interrupt operation method Setting range of watchdog 10 ~ 6,000msunit 10ms Power Supply / CPU Scan TimeScan Watchdog Timer Expression for scan time On delay timer Power Supply / CPU Timer ProcessingOff delay timer Integral timer Monostable timer Retriggerable timer Down counter CTD Power Supply / CPU Counter ProcessingUp counter CTU Up-down counter OFF Ring counterMaximum counting speed T1 + T2 Program Program Execution ProcedureClassifications of Program Interrupt program Interrupt ProgramsScan program Usage of interrupt program Process driven interrupt Parameter setting Time driven interruptHSC driven interrupt Error Classification Error HandlingOperation mode at error occurrence Power Supply / CPU Operation processing contents RUN ModeProcessing when the operation mode is changed Operation Modes Processing when the operation mode changes Power Supply / CPU Stop modePause mode Debug modeStandard type only Debug operation conditions Operation Mode ChangeOperation mode change methods Operation method Mode change Remote operation Functions Self-diagnosis Power Supply / CPU 2 I/O Force On/Off function Forced I/O setting method Power Supply / CPU Special data register for forced I/O Force on/ off Processing timing and method Special data register for error history Power Supply / CPU Direct I/O Operation functionSystem error history Clear error data Memory Configuration I/O Address Allocation O No. allocation method Structure Built-in Cnet Selection SwitchROM Mode Usage Power Supply / CPU External Memory Module Installation connectorSaving the user’s program on the external memory module Run the PLC with a program of external memory module Read RTC data from Kglwin RTC ModuleRead RTC data Following message box will be displayed Number Date Sunday Monday Tuesday Wednesday Thursday Write RTC dataDate expression Saturday Input and Output Specification Input / Output SpecificationsOpening/shutting of electric current Circuit diagram Digital Input SpecificationSpecification Main unit Input wiring DC24VDC24V PNP Example of external devicesCurrent Voltage Model Expansion Module Specification Input and Output Specification Expansion ModuleSpecifications It’s the same with the one for the main unit Main unit Relay Output Digital Output SpecificationK7M-DRT40U Circuit Economic type Model Main Unit SpecificationsInternal Circuit Relay AC110/220V Output wiringDC5V DC24V DC24V DC24V P40,P41 24V Internal Circuit Model Main Unit SpecificationsK7M-DRT/DT20U K7M-DRT/DT30U K7M-DRT/DT40U K7M-DRT/DT60U P42,P43 Internal Circuit 24V DC12V/24V … … It’s the same with the output circuit of the main unitAC110/220V DC5V/24V AC110/220V DC12/24V Model Expansion Module Specifications G7E-TR10ARefer to 7.2 ‘Special Functions’ for the special modules Built-in Functions Performance SpecificationsInput specification High-speed counter function COM0 Names of wiring terminalsInput pulse Preset input Input Common Input common terminal Wiring instructions External interface circuit Voltage output pulse generator Wiring examplePulse Generator Open collector output pulse generator High speed counter Available device InstructionHSCSTHscast Flag Instruction Parameter Setting Usage of Various Functions Usage of Various Functions Usage of Various Functions Usage of Various Functions Usage of Various Functions Programming example Remark Usage Using methodUsage of Various Functions Pulse Catch Function Minimum input pulse width Remark Usage of Various Functions Input Filter Function Minimum processing time External input signal Scan programUsage of Various Functions External Interrupt Function Function For the details , refer to Kglwin manual Introduction Manipulation Value Kp is too large MV = KpTi Edt System response when a long integration time given MV = Kp ⋅ Td dEdt Example of integral windup PID8 Perform the auto tuning operationWhere, h sampling period Perform the PID operation Usage of Various Functions ENP ENI END Usage of Various Functions DigitalOutput = Temp.⋅10 + Tse +1 PID Control Instruction Available device InstructionPID8 Flag PID Auto Tuning Available device PID8AT KGL-WIN Program ExampleTPR Usage of Various Functions Usage of Various Functions Usage of Various Functions Usage of Various Functions Error code list D4980 G7F-ADHA G7F-ADHB Performance specificationUsage of Various Functions 1 A/D·D/A Combination module Voltage DC 0 ∼10V ① RUN LED Names of parts and functionsExplain about names of parts and functions G7F-ADHA Voltage Input Current Input Left voltage input G7F-ADHBRight current input Analog output terminal Voltage output Current output 4000 Wiring O converstion characteristics Analog input characteristics Voltage input Analog output characteristics Voltage output Program example Usage of Various Functions Usage of Various Functions 2 A/D Conversion module Remark ① RUN LED Be sure to use two-core twisted shield wire Analog/Digital conversion characteristics Program example Program Usage of Various Functions 3 D/A Conversion module G7F-DA2I G7F-DA2V ③ ① Parameter setting Scaling function Digital/Analog conversion characteristics G7F-DA2I ~20mA output Program example Off DC 5V power off or the G7F-AT2A module fault Usage of Various Functions Analog timerName Contents Indicate the operating status the G7F-AT2A On normal operating Usage of Various Functions Name Contents Explain about names of parts and functions BD bC bB BA b9 b8 b7 b6 B5 b4 b3 b2 B1 b0 D4880 Parameter setting Digital conversion value registerError code D4880 ∼D4885 CH1 CH0 4000 2000 Temperature conversion characteristicsDigital conversion value 6000 No wiring Shield wire Type WireBurn-out detection function Wire resistance ≤10 Ω P0040 ~ P004F RTD input moduleP0000 Main unit input contact P000 ~ P023 Items Specification SpecificationPositioning FunctionDRT/DT type only Output SpecificationP40, P41 Names of wiring terminal Internal circuit and wiring example COM1 Usage of Various Functions Positioning function Parameter settingSetting Incremental End Single 000 100 Positioning function Speed Control Uniform Speed Operation Please refer to the ‘7.3.4 Instruction’ for details Step No. can be assigned within 1 ~ Items of parameter Operation patternOperation methods are as follows Remark Absolute End Single Example End operation Speed Operation Mode End OperationStart command Posist Absolute End Single 10,000 50,000 20,000 30,000 40,000 Keep Operation Absolute Keep Single 10,000 50,000 20,000 End 30,000 40,000 Continuous Operation Absolute Continuous Single 10,000 50,000 End 20,000 Operation Method Repeat Operation Positioning start Positioning stop Return to OriginPOSORG Rising edge ↑ Origin Detection when Approximate origin turns offOrigin return method This is the method using the approximate origin signal only Origin Detection by approximate origin Speed Override CommandPOSSOR Rising edge ↑ JOG Operation Posjog Level input External Input Stroke High/Low Limit Point Error and Output Prohibition Positioning parameter Bias Speed Backlash Compensation AmountSpeed Limit Dwell Time Origin return parameter② Origin return-Low speed DOG Positioning parameter Operation Mode is divided into following three kinds Usage of Various Functions Posist Usage of Various Functions InstructionsPositioning Indirect startPOSIST Positioning Indirect Start Instruction Available device JOG OperationPOSJOG Positioning Indirect Start Available device Instruction Posctr Positioning Control InstructionPOSCTRControl instruction designation Preset value designation Current position preset PosprsCurrent position preset Instruction Available device Posprs PWM PWM output PWMSV1 SV2 Posvel Speed control operation PosvelSpeed control operation Instruction Available device Speed override instruction Instruction Available device Speed override PossorPossor Ch. for speed override0~1 SV Speed 5 ~ 100,000pps Positioning direct startPOSDST Posdst Posorg Return to originPOSORGReturn to origin Instruction Available device Flag list Usage of Various Functions Flag list and Error codesDevice Function Description 101 Error Condition Error codeCorrective action Code 103 H48 Wiring with stepping motor driverDC Wiring with stepping motor driver DC Wiring with servo motor driverMR-J2/J2S-A K7M-DRT**U Wiring with Servo motor driverFDA-5000 AC Servo Driver SSR Communication Functions Dedicated Protocol CommunicationIntroduction Communication Functions System configuration method Connecting system configuration link between MASTER-K’s Pmulgis PMU Pin assignment and direction Pin no Signal Communication Functions Frame Structure Base Format EOT BCC Sequence of command frameETX BCC Communication Functions List of commands Communication Functions Data type PX000, %MX000, %LX000, %KX000, %CX000, %TX000, %FX000 Byte Communication Functions Execution of commands Individual reading of deviceRrSS Response format ACK response Response format NAK response Continuous readingRrSB of device Wordw EOT Blocksetting can be repeated up to max blocks Explanation Individual writing of deviceWwSS NAK H00FF EOT BCC Continuous writing of deviceWwSB H10 Format name Header Station Blockmax blocks ② Continuous reading of device Monitor registerX##RSS RSB H06 H3130 H5878 H3039 H03 RSS Monitor executionY## Command Registration Error code Tail Reading PLC StatusRST Mode Bit Local Remote ConnectionPause Debug 3041 5272 5354 31313332 G7E-DR10A Parameter setting Cuec Communication Functions Flag related with operating status Normal RUN Pause Debug Example Protocol Mode ④ Set parameters as the following table Communication Method Communication Functions Communication Functions Communication Functions Error code Error code Error type Error condition and causes Treatment Setting Communications Parameter Parameter SettingUser Defined Protocol Communication Setting frame VTH0B Communication Functions FFH0C CRH0D SOH0E XOR SUMMUL Communication Functions Ascii Type Hex Type 05 31 32 33 34 04 30 Type settingKinds Value of sum check Last transmitting frame Ascii Type Hex Type 05 31 32 33 34 04 36 Communication Functions Example of program Communication Functions InstructionUser defined communication instructionSNDCOM Sndcom Example of Usage Communication Functions Communication Functions Communication Functions Setting and program of slave station Communication Functions Communication Functions Communication Functions Communication Functions RTU mode Basic SpecificationAscii mode Modbus Protocol Communication Data area Address areaFunction code area LRC Check/CRC Check area Modbus addressing rules Size of using dataFunction code types and memory mapping H5000 Area Areacurrent value area H6000 Map of wiring Parameters SettingSetting communication parameter PLC Modbus communication instructionMODCOM Communication Functions Instruction and exampleModcom Remark Example program Coil Status Input Communication Functions Sending Data No Protocol CommunicationReceiving Data Parameter setting No protocol receiveDRCV Error flag turns on, when designating area is overCommunication Functions Instructions Drcv No protocol sendDSND Dsnd Communication Functions Examples Communication Parameter Setting Program Remote connection Remote connection and communication I/F moduleRemote connection by built-in Cnet I/F Remote connection by modem Remote connection by Fnet I/F module Usage of G7L-CUEC Master Slave Wiring Example RS-422 I/FUsage of G7L-CUEB OFF Must be off RDB SDA SDB SG Wiring Example RS-485 I/FUsage of G7L-FUEA/RUEA Master Slave Usage of G7L-PBEA/DBEA Precautions during installing InstallationInstallation Environment Environment requirements Power Input Supply Power consumption block diagram of PLC systemsPower consumption of each part Part Handling Instructions Main unit or Expansion Module handling instructions Output part Mounting instructionsOUT COM OUT 100mm or more Heat generating device Installation and Wiring Connection of expansion module Power Main circuit Device WiringPower Supply Wiring ※ T1,T2 constant voltage transformer Input and Output Devices Wiring Input Installation and Wiring Grounding Cable Specifications for wiring Daily Inspection Maintenance and InspectionLED ERR LED Periodic Inspection 10-2 Basic Procedures of Troubleshooting Troubleshooting Yes Kglwin Contact the nearest service center Turn the power unit off and on Is RUN LED off?11-4 Measure the voltage of power supply in P40 11-5 11-6 11-7 Troubleshooting Questionnaire Troubleshooting Examples Input circuit troubles and corrective actions Output circuit troubles and corrective actions 11-10 Transistor 1/3 to 1/5 rated current flow Destroyed Surge current of 10 times or more when turned on11-11 Error code List 11-12 Error CPU state Message Cause Corrective Actions Code 11-13 Appendix 1 System Definitions Option Editor option Appendix 1 System Definitions Basic Parameters Special relay F Appendix 2 Flag ListAlways Off Overflow error flag Operation error flagOperation error flag Latch Relay Function F0040 to F005F Internal relay M Data relay D App2-4 App2-5 App2-6 App2-7 Clock data Relay Description App2-8 Extension module Appendix 3 External DimensionsStandard type 95 105 App3-1 Appendix 3 External Dimensions