Procedures to Solve Abnormality, 13-6 | Hitachi NJI-350B instruction

Chapter 13 Troubleshooting

13.3 Procedures to Solve Abnormality

The following shows the processing flow when a problem has occurred:

Problem occurred

Bring the system to a safe condition

Record the status

Problem, Analysis, Presumption

	Major problems	Verification points	Typical causes of problem	Reference
	Major problems	Verification points	Typical causes of problem	item
				item
	PLC will not start	Power LED, CPU error	Power supply problem, power shut-off,	(a)
		code	insufficient power supply capacity, fatal CPU
			error
	Will not operate	CPU error code, CPU	I/O assignment problem, incorrect parameter	(b)
	(will not RUN)	LED, Internal output of	settings, incorrect user program, syntax error,
		error	operating conditions not established, write-
			occupied status
	Operation stopped	Power LED, CPU LED,	Power supply problem, expansion power supply	(c)
	(RUN stopped)	CPU error code	problem/shut-off, CPU problem, memory
			problem
	Erroneous input, no input	CPU LED, I/O LED	User program timings, input power supply, bad	(d)
	(abnormal operation)	Monitoring by peripheral	connection, problem in input area, I/O inductive
		units	noise
	Counter input does not	Input LED, special	Input power supply, bad connection, problem in	(e)
	operate	internal output setting	input area, I/O inductive noise, operating mode
			setting error
	Output error, no output	CPU LED, I/O LED,	User programming, bad connection, problem in	(f)
	(abnormal operation)	Monitoring by peripheral	output area, I/O inductive noise
		units, Forced setting
	PWM pulse output does	Output LED, special	Bad connection, problem in output area, I/O	(g)
	not operate	internal output setting	inductive noise, operating mode setting error
	Peripheral unit problem	CPU error code, fuse,	Fatal CPU error, peripheral unit problem,	(h)
		peripheral units	peripheral unit setting error, cable problem,
			broken fuse

Correct or replace the faulty area

(Verify according to the item corresponding to the problem.)

Verify the system operation

Operation

13-6

Image 281

Hitachi NJI-350B manual Procedures to Solve Abnormality, Cpu Led, I/O Led, 13-6

Contents

Application Manual Page Limited Warranty and Imitation of Liability Page Safety Precautions Required Prohibited Page Table of Contents High-Speed Counter Single-Phase Input/Output SettingHigh-Speed Counter Two-Phase Counter Memory Size and Memory Assignment Syntax and Assembler Error Codes Connecting to the PortsOperation Error Codes Error Display and Actions Memo Easily adjustable potentiometer Remote maintenance through modem connectionMaintaining programs without a battery Compliant with overseas specifications as standard Memo System Overview Device name Description 23,28-point type system configuration diagram General Specifications Chapter Function and Performance Specifications Timer counter is provided internally Function SpecificationsDevice that has been connected WR, DR Is running, operation stops and the outputs are aborted OFF Off to stop operation R7EC General purpose port Interrupt input Calculation Specifications Performance Specifications Circuit diagram Input SpecificationsSpecification OFF → on Y100 of EH-*23DRP/A23DRT/*28DRP/*28DRT Output Specifications Ms max 24 V DC 0.2A Output specification Ms max 24 V DC 0.2A Response time Load current Common OutputNumber of output points See Chapter Number of common Maximum Circuit Load current Common Output Ms max Externally supplied powerMaximum Circuit A 240 V AC Load current Common At 1 cycle or less/common PWM Output/Pulse Train Output Specifications High-Speed Counter SpecificationsAnalogue Input Specifications Point and 28-point type 10/14/28-point Relay Output Circuit diagram 23 points type Analogue Output SpecificationsCircuit diagram Analog expansion unit Module type Points type module Analog exp. unit Interrupt Input Specifications Potentiometer Analogue Input SpecificationsBackup Expansion Clock Function Power Supply for Sensor Product lineup Others Model Detailed explanation Remarks 10-Point Basic UnitName and function of each part Type EH-*14 14-Point Basic Unit To the right 23-Point and 28-Point Basic UnitEH-*23 EH-*28 Name and function of each part Expansion Unit RUN Terminal Layout and WiringPower supply 24V DC Load power supply 24V DC 100-240V AC DC power supply 24V DC AC power supply 100-240V AC Load power supply 24V DCAC power supply Input Power supply 24V DC Output Load power supply 12/24V DC Power supply 24V DC 12/24V DC Output Load power supply 12/24V DC Power supply 24V DC WRF06E Power supply 24V DC Output Output Power supply 100-240V ACOutput Power supply 24V DC 24V DC 12/24V DC Output Power supply100-240V AC Input Output Load power supply 24V DC, 100-240V AC Output Input Output Power supply 100-240V AC Current input ⋅ EH-D6EAN Example of current input and current outputIO6 OC7 VO7 OC6 VO6 IO7 100V AC 264V AC 24V DC Normal Rush Weights and Power ConsumptionType Weight 140 150 Exterior Dimensions Memo Instruction classification table Description Type Instruction ClassificationsList of Instructions Nand TD, SS, CU, CTTD, SS, CU CTU, CTD, CL RES Basic instructions timer, counter DX, DY, DR Basic instructions relational boxWX, WY, WR Item number Ladder symbol Instruction symbol WR, WM BCDDR, DM Number Instruction symbol Process descriptions WY, WR, WM Instruction symbol Process descriptions Name WM, TC Processing time when n=1BCD → FUN instructions BOX PWM Instruction Specification Details Ladder format Condition code Item numberRemark Bit Word Double word Constant Usable I/O ANI Basic instructions-3Contact serial connection AND, ANI Contact parallel connection OR, ORI Basic instructions-5Condition ORI Negation not Basic instructions-7Instruction format Not Leading edge detection and DIF, or DIF Basic instructions-8DIF n Number To 511 Decimal DFN n Basic instructions-9Trailing edge detection and DFN, or DFN Usable I/O Other Bit Word Double word WX WY WM DX DY TD, SS Usable I/O BitWord Double word Constant Other Basic instructions-13 Set start/reset cancel master control MCS, MCRRemark Upper case MCS MPS Ladder formatMRD MPP See Function column Basic instructions-18Logical block serial connection ANB Logical block parallel connection ORB Basic instructions-19 Processing box start and end Processing BOX Basic instructions-20Bit Word Indicates the start and end of the processing box Function Indicates the start and end of the relational box Basic instructions-21Relational box start and end Relational BOX OUT TD n t s On delay timer on Delay TimerBasic instructions-22 Time chart Single shot Single Shot Basic instructions-23OUT SS n t s TMR, CU Progress value is updated SS11 turns off when set value ≥ progress valueConditions are ignored because it uses edge trigger SS11 is turned on at the leading edge of X00001 again, Counter Counter Basic instructions-24OUT CU n s Counter number To 255 Decimal Set value To 65535 Decimal Ignored X00005 CL15 CU15 Set value Progress Value CU15 TC15 UP/DOWN Counter CTU17 Counter clear Counter Clear Basic instructions-27OUT CL n s Counter number To 255 Decimal Word Double word Double word LD, and s1S==s2 Or s1S==s2 Command formatCondition Steps Basic instructions-30 When WR0000 ≠ WR0002, R003 turns onRelational box Relational BOX 26.8 Lower case DW Double word LD, and s1Ss2 Or s1Ss2 BOX Basic instructions-32 When WR0000 WR0002, R005 turns onWord See Notes 37.5 Double word S1 s2 Steps Basic instructions-33 When DR0000 DR0002, R006 turns on signedSignedRelational box Signed Relational BOX Off Basic instructions-34 When WR0000 ≤ WR0002, R007 turns on≤ Relational box ≤ Relational BOX S1 = s2 Double word LD, and s1S=s2 Or s1S=s2 Substitution statement Assignment Statement Arithmetic instructions-1= s See following table Designated by WR0000 + WM000 X00001Substituted into WR0000 at the leading edge of input Binary addition Binary Addition Arithmetic instructions-2Word Double word Substitution destination Augend Addend Word 177 Double word Arithmetic instructions-3115 Lower case DW Binary subtraction Binary Subtraction Arithmetic instructions-4Substitution destination Minuend Subtrahend Positive Negative BCD subtraction BCD Subtraction Arithmetic instructions-5104 Lower case DW Word 163 Double word Binary multiplication Binary Multiplication Arithmetic instructions-6Word 112 Double word Substitution destination Multiplicand Multiplier BCD multiplication BCD Multiplication Arithmetic instructions-7164 Lower case DW Word 447 Double word Multiplication Signed binary multiplication Signed Binary143 Binary division Binary Division Arithmetic instructions-9= s1 / s2 = s1 / s2 Word 110 Double word BCD division Arithmetic instructions-10= s1 B/ s2 152 Lower case DW Signed binary division Arithmetic instructions-11= s1 S/ s2 101 Logical or Arithmetic instructions-12= s1 or s2 Upper case B Logical Arithmetic instructions-13= s1 and s2 = s1 and s2 Bit, word Double word Exclusive or Arithmetic instructions-14= s1 XOR s2 = s1 XOR s2 Bit, word Double word = Relational expression Arithmetic instructions-15= s1 == s2 = s1 == s2 Is a word Is a double word = s1 S== s2 Signed = Relational expression108 = s1 S== s2 Is a double word = s1 s2 Is a word Is a double Word Bit Double word Arithmetic instructions-17= s1 s2 = s1 S s2 Is a double word Signed Relational expression= s1 S s2 = s1 s2 Is a word Is a double word Arithmetic instructions-19 Arithmetic instructions-20 ≤ Relational expression Arithmetic instructions-21= s1 = s2 = s1 = s2 Is a word Is a double word = s1 S= s2 Is a double word Signed ≤ Relational expression= s1 S= s2 Bit set Application instructions-1Bset d, n Bit location to be set Constant is set Decimal Bres d, n Bit resetApplication instructions-2 BTS d, n Application instructions-3Bit test Also, the 20th bit of DR0104 is checked by BTS Also, the 20th bit of DR0102 is reset to 0 by Bres Shift right Application instructions-4SHR d, n After execution DIF1 SHL d, n Application instructions-5Shift left ROR d, n Application instructions-6Rotate right ROL d, n Application instructions-7Rotate left B31 DR0002 LSR d, n Application instructions-8Logical shift right Logical shift left Application instructions-9LSL d, n If d is a word BSR d, n Application instructions-10BCD shift right BSL d, n Application instructions-11BCD shift left Block transfer Move Application instructions-12Below If n is a word Words of data are transferred Copy Application instructions-13Copy d, s, n Below Copy d, s, n Default value H2020 is set in the range of WR0100 to WR01FE Block exchange Exchange Application instructions-14R7F4 R7F3 R7F2 R7F1 XCG d1, d2, n To be reversed Reverses the contents of dApplication instructions-15 Twos complement Negate Application instructions-16NEG d To take complement Absolute value Application instructions-17ABS d, s ABS d, s Word Double word Binary → BCD conversion Application instructions-18Before conversion BIN BCD → Binary conversion Application instructions-19After conversion BIN Before conversion BCD Decode Application instructions-20Average 105 115 195 317 481 829 1586 128 187 126 Application instructions-21Encode Number of bits set to That counts the bits Set to Application instructions-22Bit count Swap Application instructions-23Swap d Swaps the upper 8 bits and lower 8 bits contained in d Application instructions-24 When n=0, it is not executed When n5, it is not executedUnit Unity result write Destination I/O Input Point type Output Distribute When n=0, it is not executedApplication instructions-25 X01001 DIF0 Dist WR0000, WX0000 LD X00001 and DIF0 Normal scan end Control instructions-1714 Instruction for use 101 102 Special internal output Error code Error description Conditional jump Control instructions-4CU, CT Code number To 255 Decimal Jump condition 104 Syntax of JMP, CjmpNesting of JMP instructions is allowed Label Control instructions-5LBL n WRF001 H0001 Duplicate definition of LBL Code number To 49 Decimal Control instructions-6For the instruction instruction, see Next n 106 107 Control instructions-7Next 108 Syntax of for to Next 109 Start subroutine program Control instructions-9SB n WRF001 H0004 Duplicate definition of SB H0013 SB undefined 111 RTS DER ERRRTS Start interrupt scan program Interrupt Control instructions-11To 2 , 16 to 19 To 27 Decimal 113 Control instructions-12End interrupt scan program Return Interrupt 114 Syntax of SB n, RTS, INT n and RTINesting of subroutines is allowed up to 5 levels Usable I/O Others Baud rate Value +C H0000 +A Data length Byte +B H80 †† ††=Start code 118 R7E3 Sample programWR0 DIF0 Name Description Countermeasure TRNS/RECV command return code table 064 Transfer command-2Recv 0 d, s, t 122 123 FUN instructions-1 General purpose port switchingArgument 124 Refresh All points FUN instructions-2432 Argument dummy Refresh Input/output FUN instructions-3244 Input type 127 128 High-speed Counter Operation Control FUN instructions-5147 Argument Counter Number, operation Control value High-speed Counter Coincidence Output Control FUN instructions-6138 Argument Counter Number, output Instruction 131 Argument counter Number Replacement value Storage area High-speed Counter Current Value ReplacementFUN instructions-8 Rewrite the count value of the counter No to High-speed counter current value reading FUN instructions-9132 Argument counter Number Current value storage Area 134 FUN instructions-11 High-speed counter preset162 135 136 137 138 FUN instructions-13173 139 Pulse output control FUN instructions-14149 Argument Pulse output Number FUN instructions-15 Pulse frequency output setting changes217 141 142 Pulse output with acceleration/deceleration FUN instructions-16919 143 144 145 146 Usable I/O classifications and point types Type Assignment Point I/O Assignment External I/O Numbers Shows a diagram outlining this series of operations Classification Data type Remarks List of external I/O classification and data typeList of I/O number conventions for external I/O Data type Numbering convention Example WR0 Internal Output NumbersDR0 WM0 Memory Size and Memory Assignment Lists the programming specifications for the MICRO-EHSram Flash Following methods are used to create the user programs Programming Devices Programming Methods System configuration using a personal computerLadder Editor WVCB02H WPCB02H List of procedures for creating a program Out-line of opera-ting procedure Situation PointModify Test operation, adjustment On-line On-direct Size of one circuit Example when using a processing box Example when using loop symbols Program Transfer WRF03C WRF01AWRF03D WRF06B Input/Output Function Initial Setting for Special Input/Output FunctionChange individual setting Store the settings in the memory Operation mode list Operation Mode Special internal output for setting detailed function Input/Output Setting „ In/output setting Y100 Group „ Mode setting Y101 Y102 Group 2 Group„ Outline „ Example Special Output Operation in CPU Stop Status Pulse / PWM Output adjustmentR7FC toR7FF Counter output Basic operation High-Speed Counter Single-PhaseOperation of Single-Phase Counter Current value clear instruction operation Preload input operation Setting of Single-Phase Counter Individual counter setting At abnormal settingWRF058 Counter WRF059 Counter Phase counting mode High-Speed Counter Two-Phase CounterOperation of Two-Phase Counters ↓ Falling edge Low ↑ Rising edge High High ↓ Falling edge ↑ Rising edge Low ↓ Falling edge HighHigh ↓ Falling edge Low ↑ Rising edge High Diagnostic error Setting of Two-Phase CounterWRF072 WRF076 Bit Description WRF058 Two-phase counter Operation of PWM Output PWM Output Setting the PWM output on-duty value Setting the PWM OutputSetting the PWM output frequency Individual PWM output setting Setting abnormalityWRF058 PWM output WRF059 PWM output WRF05A PWM output Operation of Pulse Output Pulse Train Output Setting the pulse output frequency Setting of Pulse OutputSetting the number of output pulses Number of output pulses for pulse output WRF059 Pulse output Individual setting of pulse outputsWRF058 Pulse output Digital Filter Interrupt InputInterrupt input correspondence table Terminal INT No Input sampling number Potentiometers Analogue Output Analogue Input Analogue Expansion unit Sw6 Conversion mode RemarksSw1 Sw2 Range Remarks Sw3 Sw4 Range Remarks Specification. a 10-point type CPU becomes Switch Stop orRUN mode when the RUN input is On Input on Program classification Description Expression RUN Start Definition and operation Normal Scan RTI RTI INT0INT0 Causes of congestion errors at normal scanScan time Congestion check time Periodical Scan 10 Congestion error at periodical scan 10 ms Stop Continuation of operation after a congestion errorInterrupt Scan Interrupt contact on Congestion check time Scan Program execution Interrupt contact on List of interrupt label Interrupt label Cause of startup Relationship of Each Scan TypeINT16 INT17 INT18 INT27 CPU Halt time Online Change in RUNConditions for performing program change while running Powering on Instantaneous Power FailureInstantaneous power failure actions RUN OFF Operation Parameter Function Description When to use the function Forced Output Forced Set/ResetTest Operation Installation location and environment InstallationInstalling the unit Mounting to a DIN rail 10-2 10-3 WiringSeparation of the power system 10-4 Wiring to the power moduleUnit Screw Clamping 10-5 Wiring to the input terminals DC input AC input Transistor output Wiring to the output terminals Relay outputEH-*XXDT Transistor output Source type 10-7 Life characteristics 125 V AC 10-8 Wiring to the unit terminals Port function Communication port specificationPort Ascii 11-2 Off H8000 Transmission procedure 4800 bpsRemarks Setting port Port 2 specificationsBit WRF03D Initial value 11-3 1n station communication on RS-485 General purpose port Port 1,2Port 2 hardware 11-4 Modem Control Function ConfigurationAT Commands Command Function overview Example List of commands extractRegister Set value Function Number format Word format 11-7 Sequence Port Connecting to the Ports Connection for 1n station communication by RS-485 11-9 Case of RS-422 11-10 Error Codes Code Detection timing Cation Error Error name ClassifiR7CF Failure detection LBL Syntax and Assembler Error CodesFor INT CAL Operation Error CodesJMP Cjmp Bit Special Internal Output Area Name Meaning Description Setting Resetting ConditionR7CB R7CE 12-6 12-7 Special internal output Function That can be stored List of special internal outputs that can be storedWRF07B WRF07C WRF07D WRF07E 12.5 Setting Resetting ConditionName Storage data 12-9 12-10 Name Storage data Description Setting 12-11 PI/O function Individual setting RequestName Stored data Description 12-12 Name Stored data Description Setting Resetting Ladder Editor Error Display and Actions13-1 13-2 13-3 Process flow when an error occurred is shown belowError code Error name Corrective action 13-4 13-5 Checklist when Abnormality Occurred 13-6 Procedures to Solve AbnormalityCPU LED, I/O LED 13-7 Power supply check 13-8 13-9 13-10 13-11 Assignment error is generated, but data is readData cannot be entered 13-12 13-13 13-14 CPU operates, but output signals are not detectedAssignment error occurred, but output is normal 13-15 13-16 Peripheral unit name Form Operation verification proceduresDetailed operation example 14-1 14-2 E P 1 Starting the Ladder Editor for Windows E P 2 Initialization Select H-302 for the CPU type settingMenu bar 14-3 14-4 Assign in the Menu bar 14-5 Setting from the I/O Assign List 14-6 Setting from the Slot Setting Status 14-7 E P 3 Program InputClick the OK button. The dialogue closes 14-8 Click the OK button in the Processing Box 14-9 Input I/O No., time base, and the first setting valueM, Y, TD, SS, WDT, MS, TMR, CU, RCU, CTU, CTD, CL 14-10 Input comparison expression and comment Click the OK buttonClick the circuit write icon Tool bar 14-11 E P 4 Checking Program Errors 14-12 E P 5 Saving the Program 14-13 E P 6 Program Transfer to CPU 14-14 Click File → CPU write in the Menu bar 14-15 E P 7 Monitoring Verifying the OperationI/O Monitor dialogue box is displayed I/O monitor can be specified in the following two ways Click the icon in the Symbol barMonitor and display 16 points from Y100 14-16 Life of the power module Normal status Main cause of errorDaily inspection Items for daily inspection 15-2 Life of the batteryHow to replace the battery ANI LDIORI Not EH-150 200 250 252 2000 2002 4010 700 1002 300 702 302 Arithmetic instructions Instruction Instruction name Free Application instructions 2/2 Instruction Instruction name FUN instructions 1/5 Instruction Instruction name FUN instructions 2/5 Instruction Instruction name FUN instructions 3/5 Instruction Instruction name FUN instructions 4/5 Instruction Instruction name FUN instructions 5/5 Instruction Instruction name Standards Appendix 2 Standards