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Q2ASCPU/Q2ASCPU-S1/Q2ASHCPU/Q2ASHCPU-S1

1. Q2ASHcru 3 6 STOP 3 na a Y 7 ERN 3 8 gt 12 JE 10 E 14 13 11 0 Illustration of the module with the front cover open Application This LED indicates the CPU module operating condition Lit Operating with the RUN STOP key switch set to RUN or STEP RUN Off Stopped with the RUN STOP key switch set to STOP PAUSE or STEP RUN 1 RUN LED or the CPU module has detected the error that would cause the operation to stop Flash The RUN STOP key switch has been set from STOP to RUN after the program was written in stop mode The CPU module is not in RUN mode To engage the CPU module in RUN mode set the RUN STOP key switch to RUN STOP the RUN Alternatively reset the module using the key switch Lit A self diagnostic error other than a battery error that will not stop operation has been detected The parameter has been set to 2 ERROR LED Continue operation at error detection Off Normal Flash An error that will stop the operation has been detected Lit A error has been detected by the CHK instruction or annunciator F has been turned ON USERLED Off Normal Flash The latch clear operation has been executed Lit Battery error has occurred due to a drop in the CPU module main pe ALARM Mery p unit memory card battery voltage o es
2. 3 Removing the memory card while the programmable controller power is on Operate the memory card load eject switch as described below the memory card while the programmable controller power is still on a Load eject switch ON Load eject switch internal LED Lit Ejecting the memory card is prohibited b Load eject switch OFF Load eject switch internal LED Off Ejecting the memory card is allowed o gt Remove the memory card POINT The load eject switch internal LED may not be turned off when you are using the memory card for the CPU module system function such as sampling trace and status latch or for the program In this case quit the corresponding system function or program that is using the memory card Then make sure that the load eject switch internal LED is turned off and remove the memory card Do not turn on the memory card load eject switch after you have removed the memory card Otherwise on error will occur When there are parameter set file registers local devices or failure history the memory card cannot be the removed If the memory card in out switch is turned OFF the in out switch built in LED does not go off For the file registers the memory card can be removed when they are set to be unused with the QDRSET P instruction 4 Loading the memory card while the programmable controller power is on Operate the memory card load eject switch as described below to load the mem
3. Individual Information MDiagnostic Timing When an END instruction executed This suggests a CPU module hardware fault Contact your local Mitsubishi representative CPU operation can be set in the parameters at error occurrence LED indication varies The BAT ALM LED turns on at BATTERY ERROR 15 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU Error Contents and Cause OPE CIRCUIT ERR The operation circuit for sequence processing in the CPU module does not operate normally Collateral informationmmon Common Information e Individual Information EDiagnostic Timing When an END instruction executed OPE CIRCUIT ERR The DSP operation circuit in the CPU module does not operate normally Collateral informationmmon Common Information e Individual Information EDiagnostic Timing e When instruction executed Corrective Action This suggests a CPU module hardware fault Contact your local Mitsubishi representative LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU FUSE BREAK OFF There is an output module with a blown fuse Collateral informationmmon Common Information Module No Slot No For Remote I O network Network No Station No e Individual Information EDiagnostic Timing Always Check ERR LED of the output modules and replace the
4. FILE OPE ERROR The file is the one which cannot be specified by the sequence program such as comment file The specified program exists in the program memory but has not been registered in the program setting of the Parameter dialog box This error may occur when the ECALL EFCALL PSTOP PSCAN or POFF instruction is executed Collateral informationmmon Common Information File name Drive name Individual Information Program error location EDiagnostic Timing When instruction executed FILE OPE ERROR The SFC program file is one that cannot be designated by the sequence program Collateral informationmmon Common Information File name Drive name Individual Information Program error location EDiagnostic Timing When instruction executed Read the individual information of the error using the peripheral device check to be sure that the program corresponds to the numerical values there program location and correct Read the individual information of the error using the peripheral device check to be sure that the program corresponds to the numerical values there program location and correct FILE OPE ERROR No data has been written to the file designated by the sequence program Collateral informationmmon Common Information File name Drive name Individual Information Program error location MDiagnostic Timing When instruction executed Read the individual information of the e
5. The network refresh parameter of the MELSECNET H MELSECNET 10 is out of the specified area Collateral informationmmon Common Information File name Drive name Individual Information Parameter number MDiagnostic Timing At power ON At reset STOP RUN Check the network parameters and mounting status and if they differ match the network parameters and mounting status If any network parameter has been corrected write it to the CPU module Confirm the setting of the number of extension stages of the extension base units e Check the connection status of the extension base units and extension cables When the GOT is bus connected to the main base unit and extension base units also check their connection status If the error occurs after the above checks the cause is a hardware fault Contact your local Mitsubishi representative explaining a detailed description of the problem LINK PARA ERROR The network module detected a network parameter error Collateral informationmmon Common Information File name Drive name Individual Information Parameter number MDiagnostic Timing At power ON At reset STOP RUN 3 Correct and write the network parameters If the error occurs after correction it suggests a hardware fault Contact your local Mitsubishi representative 26 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU
6. Correct and write the network parameters If the error occurs after correction it suggests a hardware fault Contact your local Mitsubishi representative LINK PARA ERROR The contents of the Ethernet parameter are incorrect Collateral informationmmon Common Information File name Drive name e Individual Information Parameter number IMDiagnostic Timing At power ON At reset STOP RUN LINK PARA ERROR The CC Link parameter setting is incorrect The set mode is not allowed for the version of the mounted CC Link module Collateral informationmmon Common Information File name Individual Information Parameter number MDiagnostic Timing At power ON At reset STOP RUN Write after correcting parameters Check the parameter setting 27 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU Error Contents and Cause SFC PARA ERROR The parameter setting is illegal Though Block O was set to Automatic start in the SFC setting of the PLC parameter dialog box Block 0 does not exist Collateral informationmmon Common Information File name Individual Information Parameter number MDiagnostic Timing STOP RUN SFC PARA ERROR The block parameter setting is illegal Collateral informationmmon Common Information File name Individual Information Parameter number EDiagnostic Timing STOP RUN
7. HDiagnostic Timing When instruction executed Read common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem CPU operation can be set in the parameters at error occurrence LED indication varies 35 RUN Off On ERR Flicker On CPU Status Stop 1 Continue Corresponding CPU Error Contents and Cause SFCP OPE ERROR Exceeds device range that can be designated by the SFC program Collateral informationmmon Common Information Program error location e Individual Information MDiagnostic Timing e When instruction executed SFCP OPE ERROR The START instruction in an SFC program is preceded by an END instruction Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing e When instruction executed Corrective Action Read common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem LED Status CPU Status RUN Off On ERR Flicker On CPU Status Stop Continue SFCP EXE ERROR The active step information at presumptive start of the SFC program is incorrect Collateral informationmmon Common Information Program error location e Individual Information MDiagnostic Timing
8. List Errors that may allow the CPU module to continue the operation e g battery error Error code 1300 to 10000 Errors that may cause the CPU module to stop the operation e g WDT error Error code 1300 to 10000 Errors that may cause the CPU module to stop the operation e g RAM error Error code 1000 to 1299 Determine the error level i e whether the operation can be continued or stopped by referring to Operating Statuses of CPU described in Section 5 3 Error Code 11 5 2 Reading Error Codes When an error occurs the error code or error message etc can be read out using a peripheral device For details regarding the a peripheral device operating procedure refer to the GX Developer OPERATING MANUAL or SW_IVD GPPQ OPERATING MANUAL 12 5 3 Error Code List The following information deals with error codes and the meanings causes and corrective measures of error messages lt Relevant CPU gt QnA Indicates the QnA series and Q2ASCP U series Each CPU module model name Indicates the relevant specific CPU module Example Q4AR Q2AS 13 Error Contents and Cause MAIN CPU DOWN Runaway or failure of CPU module or failure of main CPU Malfunctioning due to noise or other reason Hardware fault Corrective Action Take noise reduction measures Reset the CPU module and RUN it again lf the 1000 g 4 same error is displayed again this suggests a Collateral in
9. Dave name Put a parameter file in the drive designated by Individual Information the parameter enabled drive switch RUN EDiagnostic Timing psa At power ON At reset plaka BOOT ERROR There is no boot file in the drive designated by the parameter enabled drive switch even though the i CPU SUS Boot DIP switch is ON Sneek and correct the valid parameter drive Stop 2210 Collateral informationmmon ST made by the En le Common information Driv name Set the boot file to the drive specified by the Individual Information parameter drive DIP switches EDiagnostic Timing At power ON At reset ICM OPE ERROR A memory card was removed without switching the memory card in out switch OFF The memory card in out switch is turned ON Remove memory card after placing the memory although a memory card is not actually installed card in out switch OFF 2300 Collateral informationmmon P Common Information Drive name e Turn on the card insert switch after inserting a e Individual Information memorycard MDiagnostic Timing When memory card is inserted or removed When memory card is inserted RUN ICM OPE ERROR Off On The memory card has not been formatted ERR Memory card format status is incorrect Flicker On Collateral informationmmon Format memory card 2301 Common Information Drive name CPU Status Individual Information pI en ay MEO CAN Stop Diagnostic Timing Continue When memory card is inserted
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11. Common Information File name Drive name Individual Information Parameter number MDiagnostic Timing At power ON At reset STOP RUN At writing to progurammable controller Read the individual information of the error using the peripheral device check the parameter item corresponding to the numerical value parameter No and correct it Rewrite corrected parameters to the CPU module reload the CPU power supply and or reset the module If the same error occurs it is thought to be a hardware error Contact your local Mitsubishi representative 25 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU Error Contents and Cause PARAMETER ERROR Collateral informationmmon Common Information File name Drive name Individual Information Parameter number MDiagnostic Timing When an END instruction executed PARAMETER ERROR The number of devices set at the PLC parameter device settings exceeds the possible CPU module range Collateral informationmmon Common Information File name Drive name Individual Information Parameter number MDiagnostic Timing At power On At reset STOP RUN At writing to progurammable controller PARAMETER ERROR The parameter file is incorrect Alternatively the contents of the file are not parameters Collateral informationmmon Common Information File name Drive name Individual Information Parameter number EDiagnostic T
12. Information Program error location e Individual Information EDiagnostic Timing STOP RUN CAN T SET S Total number of steps in all SFC programs exceed the maximum Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing STOP RUN 1 CAN T SET S Step number designations overlap in SFC program Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing STOP RUN Write the program to the CPU module again using GX Developer CPU operation can be set in the parameters at error occurrence LED indication varies 34 LED Status CPU Status RUN Off On ERR Flicker On CPU Status Stop 4 Continue Corresponding CPU Error Contents and Cause SFCP FORMAT ERR The numbers of BLOCK and BEND instructions in an SFC program are not equal Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing STOP RUN SFCP FORMAT ERR The configuration of the STEP to TRAN to TSET to SEND instructions in the SFC program is incorrect Collateral informationmmon Common Information Program error location Individual Information HDiagnostic Timing STOP RUN SFCP FORMAT ERR The structure of the SFC program is illegal STEPI instruction does no
13. JAPAN When exported from Japan this manual does not require application to the Ministry of Economy Trade and Industry for service transaction permission Specifications subject to change without notice
14. Module No Slot No e Individual Information EDiagnostic Timing At power ON At reset Reduce the number of special function modules installed SP UNIT LAY ERR Five or more AJ71QLP21 8 AJ71QBR11 modules are installed Three or more AJ71AP21 R21 8 AJ71AT21B modules are installed The total number of installed AJ71QLP21 AJ71QBR11 AJ71AP21 R21 and AJ71AT21B modules exceeds five The same network numbers or identical station numbers exist in the MELSECNET 10 network system Two or more master or load stations exist simultaneously at the MELSECNET II or MELSECNET B data link system Collateral informationmmon Common Information Module No Slot No Individual Information EDiagnostic Timing At power ON At reset SP UNIT LAY ERR The start X Y set in the PLC parameter s I O assignment settings is overlapped with the one for another module Collateral informationmmon Common Information Module No Slot No Individual Information EDiagnostic Timing At power ON At reset e Reduce the AJ71QLP21 and AJ71QBR11 modules to four or less e Reduce the AJ71AP21 R21 and AJ71AT21B modules to two or less Reduce the AJ71QLP21 AJ71QBR11 AJ71AP21 R21 and AJ71AT21B modules to a total of four or less Check the network Nos and station Nos Check the station Nos Make the PLC parameter s I O assignment setting again so it is consistent with the actual status
15. PLC parameter I O allocation settings a special function module was allocated to a location reserved for an I O module Or the opposite has happened Collateral informationmmon Common Information Module No Slot No e Individual Information MDiagnostic Timing At power ON At reset Reset the PLC parameter I O allocation setting to conform with the actual status of the special function modules SP UNIT LAY ERR 13 or more special function modules not counting the A1SI61 capable of sending an interrupt to the CPU module have been installed Collateral informationmmon Common Information Module No Slot No Individual Information HDiagnostic Timing At power ON At reset Keep the number of special function modules that can initiate an interrupt with the exception of the A 1S I61 module to 12 or fewer 1 SP UNIT LAY ERR Seven or more serial communication modules excludes A 1S J71QC24 have been installed Collateral informationmmon Common Information Module No Slot No Individual Information EDiagnostic Timing At power ON At reset SP UNIT LAY ERR Two or more A 1S 161 interrupt modules have been mounted Collateral informationmmon Common Information Module No Slot No Individual Information MDiagnostic Timing At power ON At reset Keep the number of serial communication modules excludes A 1S J71QU24 installed to six or fewer Inst
16. and CHKEND instructions is not equal Collateral informationmmon Common Information Program error location Individual Information MDiagnostic Timing When instruction executed INST FORMAT ERR The number of IX and IXEND instructions is not equal Collateral informationmmon Common Information Program error location e Individual Information HDiagnostic Timing When instruction executed INST FORMAT ERR The configuration of the check conditions for the CHK instruction is incorrect Alternatively a CHK instruction has been used ina low speed execution type program Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing When instruction executed Corrective Action Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem LED Status CPU Status RUN Off ERR Flicker CPU Status Stop q EXTEND INST ERR The designation of a MELSECNET MINI S3 master module control instruction was wrong Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing e When instruction executed Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error loca
17. at error occurrence LED indication varies 36 RUN Off ERR Flicker CPU Status Stop Corresponding CPU Error Contents and Cause STEP EXE ERROR Startup was executed at a block in the SFC program that was already started up Collateral informationmmon Common Information Program error location e Individual Information MDiagnostic Timing e When instruction executed Corrective Action Read common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem STEP EXE ERROR Startup was attempted at the step that does not exist in the SFC program Or the step that does not exist in the SFC program was specified for end Forced transition was executed based on the transition condition that does not exit in the SFC program Or the transition condition for forced transition that does not exit in the SFC program was canceled Collateral informationmmon Common Information Program error location Individual Information HDiagnostic Timing When instruction executed Read the common information of the error using the peripheral device and check and correct the error step corresponding to that value program error location Turn ON if the special relay SM321 is OFF STEP EXE ERROR There were too many simultaneous active steps in blocks that can be designated
18. emergency circuit protection circuit and interlock circuit as they could cause machine damages and accidents due to the abovementioned failures An example of system design which is based on fail safe concept is provided on the next page 1 System design circuit example AC system AC DC system Power supply Transformer Fuse Output unit CPU module 4 Power supply DC power supply n A established signal E O c DC power Start stop circuit SM4 DN A Can be started abs had by turning ON of D dal S RA1 which is the ae 4 ie ant PLC s RUN output NS i e setting tor i JM is the time taken to establish the 4 DC input signal Voltage relay Input unit est recommended RA p E Output for warning A2 L OXN Ym OT lame or buzzer EN al Vn S status ON in RUN status by SM403 Output unit _ Output for warning It unit ee lamp or buzzer MC io L Turned ON in RUN NS I yn oi status by SM403 Switches the power 1 supply to output devices _ all the system outpatmedul At emergency stops f tt At stops on reaching a Le Switches the power limit O a supply to output Interlock circuit MC2 devices OFF when Constructs external mi Y O 4 the system stops interlock circuits for MC1 At emergency stops opposing op
19. fuse of the module whose LED is lit Read the common information of the error using the peripheral device and replace the fuse at the output module corresponding to the numerical value module No reading Alternatively monitor special registers SD1300 to SD1331 with the peripheral device and change the fuse of the output module whose bit has a value of 1 When a GOT is bus connected to the main base unit or extension base unit check the connection status of the extension cable and the grounding status of the GOT FUSE BREAK OFF There is an output module with a blown fuse External power supply for output load is turned off or disconnected Collateral informationmmon Common Information Module No Slot No For Remote I O network Network No Station No e Individual Information EDiagnostic Timing Always VO INT ERROR Check ERR LED of the output modules and replace the module whose LED is lit Read the common information of the error using the peripheral device and replace the fuse at the output module corresponding to the numerical value module No reading Alternatively monitor special registers SD1300 to SD1331 with the peripheral device and change the fuse of the output module whose bit has a value of 1 Check whether the external power supply for output load is ON or OFF When a GOT is bus connected to the main base unit or extension base unit check the connection status of the e
20. may fail or malfunction due to unspecified reasons To prevent the whole system failure machine breakdown and accidents build a fail safe circuit outside the programmable controller Examples of a system and its fail safe circuitry are described below lt System example gt Output module for fail safe purpose 1 1 The output module for fail safe purpose should be mounted on the last slot of the system YBO to YBF in the above system ON delay timer Internal program External load CPU module Output module 2 2 Since YBO turns ON and OFF alternatively at 0 5 second intervals use a contactless output module a transistor is used in the above example 3 If an offdelay timer especially miniature timer is not available construct the failsafe circuit using an ondelay timer shown on the next page 10 5 ERROR CODES The Q2ASCPU uses the self diagnostic function to display an error code LED indicator and store the error information in the special relay SM and the special register SD if an error occurs when the power is turned on to the programmable controller or when the programmable controller starts or running Also if an error occurs when a communication request is issued from a peripheral device special function module or network system the Q2ASCPU module returns the error code 4000H to 4FFFH to the request source This chapter explains the details of errors that could
21. occur on the QQASCPU and how to take a corrective action against them The error code of the error that occurred when a general data processing request is made from the peripheral device special function module or network system is not stored into SDO of the Q2ASCPU The error code is returned to the source of the general data processing request 5 1 Error Code Type Errors are detected by the self diagnostics function of CPU module or during communication with CPU module The following table classifies the errors according to the detection pattern detection location and error code Error detection pattern Error detection location Error code Reference Detection by the self diagnostics function of CPU module CPU module 1000 to 10000 1 Section 5 3 Detection at communication with CPU module CPU module 4000H to 4FFFH Model Q2AS H CPU S1 User s Manual Serial communication module etc 7000H to 7FFFH Serial Communication User s Manual etc CC Link module BOOOH to BFFFH CC Link System Master Local Module User s Manual Ethernet module CO00H to CFFFH Ethernet Interface Module User s Manual MELSECNET H network module FOOOH to FFFFH For QnA Q4AR MELSECNET 10 Network System Reference Manual 1 CPU module error codes are classified into minor moderate major errors as shown below e Minor error e Moderate error e Major error
22. of the special function modules 20 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU LED Status Corresponding Error Contents and Cause Corrective Action CPU Status CPU SP UNIT LAY ERR A 1S J71LP21 or A 1S J71BR11 for use with the AnUCPU network module has been installed Collateral informationmmon Replace the network module to A 1S J71QLP21 or Common Information Module No Slot No A 1S J71QBR11 e Individual Information RUN Off ERR Flicker CPU Status Diagnostic Timing Si op At power ON At reset SP UNIT LAY ERR RUN The control system and standby system module Off configurations are different when a redundant ERR system is in the backup mode Collateral informationmmon Common Information Module No Slot No e Individual Information Check the module configuration of the standby Flicker system CPU Status E pa Stop HDiagnostic Timing At power ON At reset Continue SP UNIT ERROR The location designated by the FROM TO instruction set is not the special function module The module that does not include buffer memory has been specified by the FROM TO instruction The special function module Network module being accessed is faulty Station not loaded was specified using the instruction whose target was the CPU share memory Collateral informationmmon Common Information Module No Slot No Individua
23. operation ON Boot operation OFF Boot operation is not performed SW2to 4 Parameter area These switches allow you to select the memory into which to write the parameters Internal RAM Memory card SW to 4 are valid if SW1 is OFF Sw2 SW1 System protect Writing to the CPU module and issuing the control instructions are prohibited ON _ System protect is valid OFF System protect is invalid switches 2 The factory default setting of all switches is OFF SW2 Unused Fixed to OFF SW1 Peripheral protocol This switch allows you to select the type of peripheral devices that are connected to the CPU modules peripheral interface Set this switch to ON when you wish to access another stations ACPU from the ACPU peripheral device The setting becomes effective as soon as you set the switch ON _ Peripheral device for the ACPU OFF Peripheral device for the Q2ASCPU 14 RS 422 connector Used to connect a peripheral device 3 2 Relationship between switch operation and the LED indication 1 Writing a program while the CPU module is stopped Follow the procedure below to write a program while the CPU module is stopped a RUN STOP key switch STOP RUN LED Off CPU module is in STOP mode Write a program b RUN STOP key switch RESET RUN LED Off CPU module is in STOP mode c RUN STOP key switch STOP RUN RUN LED Lit CPU module is in RUN mode POINT e After writi
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25. Error Contents and Cause LINK PARA ERROR Although the number of modules has been set to one or greater number in the Ethernet network parameter setting the number of actually mounted module is zero The start I O No of the Ethernet network parameter differs from the I O No of the actually mounted module Collateral informationmmon Common Information File name Drive name Individual Information Parameter number Diagnostic Timing At power ON At reset STOP RUN LINK PARA ERROR AJ71QE71 does not exist in the position of I O number set by the parameter I O number designation is overlapping Numbers of the network parameter and loaded AJ71QE71 are different Ethernet parameter dedicated instruction is set to more than five Collateral informationmmon Common Information File name Drive name Individual Information Parameter number HDiagnostic Timing At power ON At reset STOP RUN LINK PARA ERROR The Ethernet and MELSECNET 10 use the same network number The network number station number or group number set in the network parameter is out of range The specified I O number is outside the range of the used CPU module The Ethernet specific parameter setting is not normal Collateral informationmmon Common Information File name Drive name Individual Information Parameter number MDiagnostic Timing At power ON At reset STOP RUN Corrective Action
26. MITSUBISHI Q2ASCPU Q2ASCPU S1 Q2ASHCPU Q2ASHCPU S1 User s Manual Hardware Thank you for buying the Mitsubishi general purpose programmable controller MELSEC QnA Series Prior to use please read both this manual and detailed manual thoroughly and familiarize yourself with the product MODEL Q2ASCPU U H W JE MODEL MEISE IB NA 0800140 H 1312 MEE 2000 MITSUBISHI ELECTRIC CORPORATION 1 e CONDITIONS OF USE FOR THE PRODUCT e Mitsubishi programmable controller the PRODUCT shall be used in conditions i where any problem fault or failure occurring in the PRODUCT if any shall not lead to any major or serious accident and li where the backup and fail safe function are systematically or automatically provided outside of the PRODUCT for the case of any problem fault or failure occurring in the PRODUCT The PRODUCT has been designed and manufactured for the purpose of being used in general industries MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY INCLUDING BUT NOT LIMITED TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT WARRANTY TORT PRODUCT LIABILITY FOR ANY INJURY OR DEATH TO PERSONS OR LOSS OR DAMAGE TO PROPERTY CAUSED BY the PRODUCT THAT ARE OPERATED OR USED IN APPLICATION NOT INTENDED OR EXCLUDED BY INSTRUCTIONS PRECAUTIONS OR WARNING CONTAINED IN MITSUBISHI S USER INSTRUCTION AND OR SAFETY MANUALS TECHNICAL BULLETINS AND GUIDELINES FOR the PRODUCT Prohibited Applica
27. OR The CC Link parameter is not set when the CC Link instruction is executed Collateral informationmmon Common Information Program error location e Individual Information Diagnostic Timing When instruction executed Execute the CC Link instruction after setting the CC Link parameter LED Status CPU Status RUN Off On ERR Flicker On CPU Status Stop Continue 1 1 FOR NEXT ERROR No NEXT instruction was executed following the execution of a FOR instruction Alternatively there are fewer NEXT instructions than FOR instructions Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing When instruction executed Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem CPU operation can be set in the parameters at error occurrence LED indication varies 31 RUN Off ERR Flicker CPU Status Stop Corresponding CPU 4201 Error Contents and Cause FOR NEXT ERROR A NEXT instruction was executed although no FOR instruction has been executed Alternatively there are more NEXT instructions than FOR instructions Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing e When instruction executed Correc
28. Reset the CPU module and RUN it again If the Collateral informationmmon wee E 1102 same error is displayed again this suggests a Common Information e Individual Information EDiagnostic Timing At power ON At reset When an END instruction executed CPU module hardware fault Contact your local Mitsubishi representative 14 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU QnA 1 a2 Error Contents and Cause RAM ERROR The device memory in the CPU module is faulty Collateral informationmmon Common Information Individual Information EDiagnostic Timing At power ON At reset RAM ERROR The address RAM in the CPU module is faulty Collateral informationmmon Common Information Individual Information Diagnostic Timing At power ON At reset Corrective Action Take noise reduction measures When indexing is performed check the value of index register to see if it is within the device range Reset the CPU module and RUN it again If the same error is displayed again this suggests a CPU module hardware fault Contact your local Mitsubishi representative Take noise reduction measures Reset the CPU module and RUN it again If the same error is displayed again this suggests a CPU module hardware fault Contact your local Mitsubishi representative RAM ERROR The system RAM in the CP
29. SFC PARA ERROR The number of step relays specified in the device setting of the PLC parameter dialog box is less than that used in the program Collateral informationmmon Common Information File name Individual Information Parameter number EDiagnostic Timing STOP RUN 3 SFC PARA ERROR The execution type of the SFC program specified in the program setting of the PLC parameter dialog box is other than scan execution Collateral informationmmon Common Information File name e Individual Information Parameter number EDiagnostic Timing At power ON At reset STOP RUN Corrective Action Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem 28 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop The diagnostic timing of CPU modules except for Universal QCPU can be performed only when switching the CPU modules to run Corresponding CPU Error Contents and Cause INSTRCT CODE ERR The program contains an instruction code that cannot be decoded An unusable instruction is included in the program Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing At power ON At reset STOP RUN When instruction executed INSTRCT CODE ERR The program contains a dedic
30. STOP RUN SFCP EXE ERROR Key switch was reset during RUN when presumptive start was designated for SFC program Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing STOP RUN Read common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem The program is automatically subjected to an initial start CPU Status Continue BLOCK EXE ERROR Startup was executed at a block in the SFC program that was already started up Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing When instruction executed Read common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem 1 BLOCK EXE ERROR Startup was attempted at a block that does not exist in the SFC program Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing When instruction executed Read the common information of the error using GX Developer and check and correct the error step corresponding to that value program error location Turn ON if the special relay SM321 is OFF CPU operation can be set in the parameters
31. U module is faulty Collateral informationmmon Common Information e Individual Information EDiagnostic Timing At power ON At reset Take noise reduction measures Reset the CPU module and RUN it again lf the same error is displayed again this suggests a CPU module hardware fault Contact your local Mitsubishi representative OPE CIRCUIT ERR The operation circuit for index modification in the CPU module does not operate normally Collateral informationmmon Common Information Individual Information BDiagnostic Timing At power ON At reset OPE CIRCUIT ERR The hardware logic in the CPU module does not operate normally Collateral informationmmon Common Information Individual Information EDiagnostic Timing At power ON At reset OPE CIRCUIT ERR The operation circuit for sequence processing in the CPU module does not operate normally Collateral informationmmon Common Information Individual Information HDiagnostic Timing At power ON At reset OPE CIRCUIT ERR The operation circuit for index modification in the CPU module does not operate normally Collateral informationmmon Common Information Individual Information EDiagnostic Timing When an END instruction executed OPE CIRCUIT ERR The hardware logic in the CPU module does not operate normally Collateral informationmmon Common Information
32. a aaa secorewecevans 11 5 1 Error Code Type A A A ad 1 1 5 2 Reading Error Codes a a RA 12 5 3 Error Code List a A as Aaa 13 5 4 Canceling of Errors a a E a E A ober ese A ata dea dad 42 6 Transportation Precautions A a a aa ad De 43 6 1 Controlled Models A a da 43 6 2 Transport Guidelines A A a A a a 43 A 3 1 OVERVIEW This manual explains the performance specifications names and settings of each part and the error codes for the Q2ASCPU Q2ASCPU S1 Q2ASHCPU and Q2ASHCPU S1 hereinafter Q2ASCPU Refer to the Type A1SC24 R2 A1SH A2SHCPU S1 A2ASCPU S1 S30 User s Manual Hardware IB 66468 enclosed with the base unit for details on the Q2ASCPU safety precautions general specifications mounting and installation methods EMC Directives Low voltage Directives and the input output module specifications and connection methods When using the Q2ASCPU with the A1S38HB A1S38HBEU refer to the Q2AS H CPU S1 User s Manual Hardware enclosed with the base unit All of the contents of this manual are given in the User s Manual 2 PERFORMANCE SPECIFICATION 2 1 QQASCPU Module Performance Specification Performance specification of Q2ASCPU module is as follows Q2ASCPU Q2ASCPU S1 Q2ASHCPU Q2ASHCPU S1 Control method Repetitive operation of stored program RA I O enabled by Item Remark 1 0 control method Refresh mode Sequence control dedicated language Programming language Relay symbol language logic s
33. a dealt with the instruction exceeds the applicable range The storage data and constant of the device specified by the instruction exceeds the applicable range When writing to the host CPU shared memory the write prohibited area is specified for the write destination address The range of storage data of the device specified by the instruction is duplicated The device specified by the instruction exceeds the range of the number of device points The interrupt pointer No specified by the instruction exceeds the applicable range Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing e When instruction executed Corrective Action Read the common information of the error using a peripheral device check error step corresponding to its numerical value program error location and correct the problem Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem CPU operation can be set in the parameters at error occurrence LED indication varies 30 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop RUN Off On ERR Flicker On CPU Status Stop Continue Corresponding CPU Error Contents and Cause OPERATION ERROR The network No or station No specified for the dedicated ins
34. agnostic Timing Always Read the individual information of the error using the peripheral device check the numerical value time there and shorten scan time if necessary Change the low speed execution watch time in the PLC RAS setting of the PLC parameter dialog box 38 CPU Status Continue Corresponding CPU QnA Error Contents and Cause PRG VERIFY ERR The control system and standby system in the redundant system do not have the same programs and parameters This can be detected from the standby system of the redundant system Collateral informationmmon Common Information File name e Individual Information HDiagnostic Timing Always Corrective Action Synchronise the programs and parameters of the control system and standby system LED Status CPU Status RUN Off ERR Flicker CPU Status Stop MODE VERIFY ERR The operational status of the control system and standby system in the redundant system is not the same This can be detected from the standby system of the redundant system Collateral informationmmon Common Information Individual Information Diagnostic Timing Always Synchronise the operation statuses of the control system and standby system TRUCKINERR A CPU module tracking memory error was detected during initial This can be detected from the control system or standby system of the redundant system Coll
35. al information of the error using a peripheral device and check the special function module dedicated instruction network instruction that corresponds to the value program error part to make modification Set the module model by PLC parameter I O assignment according to the special function module dedicated instruction setting Example Although AJ71QC24N is used actually AJ71QC24 is set 4 CPU operation can be set in the parameters at error occurrence LED indication varies 2 The BAT ALM LED turns on at BATTERY ERROR 21 ue Error Contents and Cause Corrective Action a pate SP UNIT ERROR RUN Data of special function module to be simulated is Off On i Read the individual information of the error using a A not set in the simulation date i i ERR ECollateral informationmmon peripheral device and check the special function Flicker On 2113 Common Information FFFFH fixed module special function module dedicated Individual Information Program error location instruction network instruction that cormesponds to CPU Status Diagnostic Timing the value program error part to make modification Stop e When instruction executed STOP RUN Continue MISSING PARA The parameter enabled drive does not exist in the ae by ee enabledidrive Check and correct the setting of the parameter switch of the switch 2200 Collateral informationmmon enabled drive shane F i Common Information
36. all only 1 A 1S 161 module CPU operation can be set in the parameters at error occurrence LED indication varies 19 RUN Off ERR Flicker CPU Status Stop Corresponding CPU Error Contents and Cause SP UNIT LAY ERR At the MELSECNET MINI auto refresh network parameter settings the module allocation that was set is different from the actual module models at the station numbers in the link system Collateral informationmmon Common Information Module No Slot No e Individual Information MDiagnostic Timing At power ON At reset Corrective Action Reset the network parameter MELSECNET MINI auto refresh unit module allocation setting so that it conforms to the station number of the module that is actually linked SP UNIT LAY ERR There are too many special function modules that can use dedicated instructions allocated number of modules installed The total of the figures indicated below is above 1344 AD59 AD57 S1 AD58 AJ71C24 S3 S6 S8 AJ71UC24 AJ71C21 81 AJ71PT32 S3 AJ71T32 S3 AJ71QC24 R2 R4 AJ711D1 2 R4 AD75 modules installed x 5 modules installed x 8 modules installed x 10 modules installed x 10 modules installed x 29 modules installed x125 modules installed x 29 modules installed x 8 modules installed x 12 total gt 1344 When the expansion mode is used Collateral informationmmon Common Information
37. ated instruction for SFC although it is not an SFC program Collateral informationmmon Common Information Program error location e Individual Information Diagnostic Timing At power ON At reset STOP RUN When instruction executed INSTRCT CODE ERR The name of dedicated instruction specified by the program is incorrect The dedicated instruction specified by the program cannot be executed by the specified module Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing At power ON At reset STOP RUN When instruction executed INSTRCT CODE ERR The number of devices for the dedicated instruction specified by the program is incorrect Collateral informationmmon Common Information Program error location Individual Information Diagnostic Timing At power ON At reset STOP RUN When instruction executed INSTRCT CODE ERR The device which cannot be used by the dedicated instruction specified by the program is specified Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing At power ON At reset STOP RUN When instruction executed Corrective Action Read the common information of the error using a peripheral device check error step corresponding to its numerical value program error location and correct the problem 29 LED Status CPU S
38. ateral informationmmon Common Information e Individual Information EDiagnostic Timing At power ON At reset STOP RUN Hardware fault of the CPU module Please contact your local nearest Mitsubishi or sales representative explaining a detailed description of the problem Change the CPU modules in order of the standby system CPU module and control system CPU module TRUCKIN ERR The CPU module detected an error during the handshake for tracking This can be detected from the control system or standby system of the redundant system Collateral informationmmon Common Information Individual Information EDiagnostic Timing When an END instruction executed CONTROL EXE The standby system in a redundant system is switched to the control system This can be detected from the standby system of the redundant system Collateral informationmmon Common Information Reason s for system switching e Individual Information EDiagnostic Timing e Always Check the condition of the other stations Check the control system condition 39 CPU Status Continue CPU Status Continue Corresponding CPU Error Contents and Cause CONTROL WAIT The control system in a redundant system is switched to the standby system This can be detected from the standby system of the redundant system Collateral informationmmon Common Information Reason s for s
39. by the SFC program Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing When instruction executed STEP EXE ERROR There were too many simultaneous active steps in all blocks that can be designated Collateral informationmmon Common Information Program error location e Individual Information HDiagnostic Timing When instruction executed Read common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem 37 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU 5000 Error Contents and Cause WDT ERROR The scan time of the initial execution type program exceeded the initial execution monitoring time specified in the PLC RAS setting of the PLC parameter Collateral informationmmon Common Information Time value set Individual Information Time value actually measured MDiagnostic Timing Always 5001 WDT ERROR The scan time of the program exceeded the WDT value specified in the PLC RAS setting of the PLC parameter Collateral informationmmon Common Information Time value set Individual Information Time value actually measured EDiagnostic Timing Always Corrective Action e Read the individual information of the error from the peripheral de
40. cluding the extension cable intelligent function module etc the error cause cannot be removed even if the error is canceled by the special relay SM50 and special register SD50 Refer to the error code list and remove the error cause 2 Errors developed due to trouble in other than the CPU module are not canceled even if the special relay SM50 and special register SD50 are used to cancel the error Example Since SP UNIT DOWN is the error that occurred in the base unit including the extension cable intelligent function module etc the error cause cannot be removed even if the error is canceled by the special relay SM50 and special register SD50 Refer to the error code list and remove the error cause 42 6 TRANSPORTATION PRECAUTIONS When transporting lithium batteries make sure to treat them based on the transport regulations 6 1 Controlled Models The batteries for the MELSEC QnA series CPU module including memory cards are classified as follows Classification for Product name Model Product supply status transportation QnA series cds battery A6BAT Lithium battery Q1MEM 128S Q1MEM 128SE Q1MEM 1MS Q1MEM 1MSE Q1MEM 1MSF Q1MEM 256S Q1MEM 256SE Q1MEM 256SF Q1MEM 2MS Q1MEM 2MSF Q1MEM 512S Q1MEM 512SE Q1MEM 512SF Q1MEM 64S Q1MEM 64SE Non dangerous goods Packed with lithium coin battery BR2325 QnA series memory card 6 2 Transport Guidelines Comply with IATA Dangerous Go
41. e Individual Information EDiagnostic Timing Always Corrective Action Check the supply voltage of the power supply module If the voltage is abnormal then replace the power supply module Check the supply voltage of the power supply module If the voltage is abnormal then replace the power supply module LED Status CPU Status CPU Status Continue RUN Off ERR Flicker CPU Status Stop DC DOWN 24V The 24 VDC power supplied to the system management module AS92R has dropped below 90 of the rated voltage This can be detected from the control system or standby system of the redundant system Collateral informationmmon Common Information e Individual Information EDiagnostic Timing Always Check the 24VDC power supplied to the system management module AS92R CPU Status Continue Corresponding CPU BATTERY ERROR The battery voltage in the CPU module has dropped below stipulated level The lead connector of the CPU module battery is not connected Collateral informationmmon Common Information Drive Name Individual Information MDiagnostic Timing Always Change the battery If the battery is for program memory standard RAM or for the back up power function install a lead connector BATTERY ERROR Voltage of the battery on memory card 1 has dropped below stipulated level Collateral informationmmon Common Information Dri
42. el operation for errors only when the errors allow the CPU module to continue its operation To cancel the errors follow the steps shown below Eliminate the cause of the error Store the error code to be canceled in the special register SD50 Energize the special relay SM50 OFF ON The error to be canceled is canceled a a 1 2 3 4 After the CPU module is reset by the canceling of the error the special relays special registers and LEDs associated with the error are returned to the status under which the error occurred If the same error occurs again after the cancellation of the error it will be registered again in the error history When multiple enunciators F detected are canceled the first one with No F only is canceled Refer to the following manual for details of error canceling gt Model Q2AS H CPU S1 User s Manual POINT 1 When the error is canceled with the error code to be canceled stored in the SD50 the lower one digit of the code is neglected Example If error codes 2100 and 2101 occur and error code 2100 to cancel error code 2101 If error codes 2100 and 2111 occur error code 2111 is not canceled even if error code 2100 is canceled 2 Errors developed due to trouble in other than the CPU module are not canceled even if the special relay SM50 and special register SD50 are used to cancel the error Example Since SP UNIT DOWN is the error that occurred in the base unit in
43. erations HS At stops on reaching such as forward and a limit reverse rotation and parts that could cause machine damage or accidents The procedures used to switch on the power supply are indicated below AC system AC DC system 1 Switch the power supply ON 1 Switch the power supply ON 2 Setthe CPU module to RUN 2 Set the CPU module to RUN 3 Switch the start switch ON 3 Switch RA2 ON when the DC power supply starts 4 The output devices are driven in 4 Switch the timer TM ON when the DC power supply accordance with program when the reaches working voltage The set value for TM must be magnetic contactor MC turns ON the time it takes for 100 establishment of the DC power after RA2 is switched ON Make this set value 0 5 seconds 5 Switch the start switch ON 6 The output devices are driven in accordance with the program when the magnetic contactor MC comes ON If a voltage relay is used at RA2 no timer TM is necessary in the program 9 2 Fail safe measures to cover the possibility of programmable controller failure Problems with a CPU module and memory can be detected by the self diagnostics function However problems with I O control area may not be detected by the CPU module In such cases all I O points turn ON or OFF depending on the problem and normal operation and safety cannot be maintained Though Mitsubishi programmable controllers are manufactured under strict quality control they
44. f Normal Off Lit The boot operation has been completed gt BOOTIE Off The boot operation has not been executed Application RUN STOP Executes stops the operation of the sequence program L CLR Sets the entire data of the latch area specified by the RUN STOP key parameter to OFF or 0 Clears the entry of the sampling switch trace and the status latch RESET Executes the hardware reset operation and the reset at an operation error occurrence and initializes the operation 7 Battery A6BAT Backup battery to be used for the internal RAM and the power failure compensation function 8 Battery connector Used to connect the battery lead wire The lead wire is removed from pin the connector at shipment in order to prevent battery consumption Memory card EJECT button Used to eject the memory card from the CPU module 10 Memory card loading connector Memory card Load eject switch This connector is used to load the memory card in the CPU module This switch setting determines whether or not you can load eject the 11 LED equipped memory card during energizing The factory default setting is OFF N ON Loading is prohibited LED is lit En 4 OFF Loading is allowed LED is turned off System setting These switches allow you to set the items for the CPU module operation switches 1 The factory default setting of all switches is OFF SW5 Boot setting This switch allows you to select the memory for
45. formationmmon CPU module hardware fault Contact your local Common Information Mitsubishi tati Individual Information subia preseas EDiagnostic Timing Always END NOT EXECUTE Entire program was executed without the execution of an END instruction e When the END instruction is executed it is read i P Kerimi d fist e Take noise reduction measures as another Instruction coce e g Cue t0 Noise Reset the CPU module and RUN it again If the e The END instruction has been changed to a gt 1010 ihe iaetnieti d h same error is displayed again this suggests a sees ae reson 59 Aereo CPU module hardware fault Contact your local Collateral informationmmon y are q Mitsubishi representative Common Information e Individual Information EDiagnostic Timing When an END instruction executed RAM ERROR The sequence program storing built in RAM program memory in the CPU module is faulty e Take noise reduction measures Collateral informationmmon e Reset the CPU module and RUN it again If the 1101 Common Information same error is displayed again this suggests a e Individual Information CPU module hardware fault Contact your local EDiagnostic Timing Mitsubishi representative At power ON At reset When an END instruction executed RAM ERROR The work area RAM in the CPU module is faulty The standard RAM and extended RAM in the CPU modul fault e Take noise reduction measures eRe aes
46. he CPU module base unit and or the special location corresponding to the individual information function module that was accessed is experiencing is stored a hardware fault Contact your local Mitsubishi Collateral informationmmon representative Common Information Module No Slot No Individual Information Program error location Diagnostic Timing During execution of FROM TO instruction set CONTROL BUS ERR When performing a parameter I O allocation the intelligent function module special function module could not be accessed during initial communications On error occurring the head I O number of the corresponding intelligent function module special function module is stored in the common RUN information Off Collateral informationmmon ERR Common Information Module No Slot No Reset the CPU module and RUN it again If the Flicker Individual Information same error is displayed again the intelligent EDiagnostic Timing function module special function module CPU CPU Status At power ON At reset module or base unit is faulty Contact your local Stop CONTROL BUS ERR Mitsubishi representative The FROM TO instruction is not executable due to a control bus error with the intelligent function module special function module On error occurring the program error location is stored in the individual information Collateral informationmmon Common Information Module No Slot No Indiv
47. idual Information Program error location Diagnostic Timing During execution of FROM TO instruction set SYS UNIT DOWN Hardware fault at the system management module AS92R Collateral informationmmon Common Information e Individual Information EDiagnostic Timing Always AC DC DOWN A momentary power supply interruption has occurred On The power supply went off Collateral informationmmon Check the power supply Off Common Information e Individual Information CPU Status EDiagnostic Timing Continue Always This suggests a system management module AS92R hardware fault Contact your local Mitsubishi representative 2 The BAT ALM LED turns on at BATTERY ERROR 17 Error Contents and Cause DUAL DC DOWN 5V The power supply voltage 100 to 240VAC of either of the two power supply modules on the power supply duplexing extension base unit dropped to or below 85 of the rated voltage This can be detected from the control system of the redundant system Collateral informationmmon Common Information e Individual Information EDiagnostic Timing Always DC DOWN 5V The voltage 100 to 240VAC of the power supply module on the extension base unit dropped to or below 85 of the rated voltage This can be detected from the control system of the stand alone system or redundant system Collateral informationmmon Common Information
48. iming At power On At reset STOP RUN At writing to progurammable controller Corrective Action Read the individual information of the error using the peripheral device check the parameter item corresponding to the numerical value parameter No and correct it If the error is still generated following the correction of the parameter settings the possible cause is the memory errorm of the CPU module s built in RAM or program memory or the memory card Contact your local Mitsubishi representative Check whether the parameter file version is x _QPA and check the file contents to be sure they are parameters LINK PARA ERROR Although the QnACPU is a control station or master station the network parameters have not been written Collateral informationmmon Common Information File name Drive name Individual Information Parameter number EDiagnostic Timing At power ON At reset STOP RUN Correct and write the network parameters If the error occurs after correction it suggests a hardware fault Contact your local Mitsubishi representative LINK PARA ERROR The network No specified by a network parameter is different from that of the actually mounted network The head I O No specified by a network parameter is different from that of the actually mounted I O unit The network class specified by a network parameter is different from that of the actually mounted network
49. ishi shall accept onerous product repairs for seven 7 years after production of the product is discontinued Discontinuation of production shall be notified with Mitsubishi Technical Bulletins etc 2 Product supply including repair parts is not available after production is discontinued 3 Overseas service Overseas repairs shall be accepted by Mitsubishi s local overseas FA Center Note that the repair conditions at each FA Center may differ 45 4 Exclusion of loss in opportunity and secondary loss from warranty liability Regardless of the gratis warranty term Mitsubishi shall not be liable for compensation of damages caused by any cause found not to be the responsibility of Mitsubishi loss in opportunity lost profits incurred to the user by Failures of Mitsubishi products special damages and secondary damages whether foreseeable or not compensation for accidents and compensation for damages to products other than Mitsubishi products replacement by the user maintenance of on site equipment start up test run and other tasks 5 Changes in product specifications The specifications given in the catalogs manuals or technical documents are subject to change without prior notice 46 Country Region Sales office Tel U S A Brazil Germany U K Italy Spain France Czech Republic Poland Russia Mitsubishi Electric Automation Inc 500 Corporate Woods Parkway Vernon Hills IL 60061 U S A Tel 1 84
50. k the system configuration status 40 CPU Status Continue Corresponding CPU Error Contents and Cause Corrective Action LED Status CPU Status ERR On Off FY Anriunciator P wee set ON Read the individual information of the error using CPU Status Collateral informationmmon p i a the peripheral device and check the program Continue 9000 Common Information Program error location dad tee a e Individual Information Annunciator number ri a RUN EDiagnostic Timing numb USER LED On e When instruction executed ERR USER LED On CPU Status Continue RUN On ERR off lt CHK gt ERR Eor detected bythe CHK instruction Read the individual information of the error using CPU Status Collateral informationmmon i i the peripheral device and check the program Continue 9010 Common Information Program error location i Los k E corresponding to the numerical value error RUN Individual Information Failure No berik Diagnostic Timing n r ber there USER LED On When instruction executed ERR USER LED On CPU Status Continue 2 For the Basic model QCPU the special register SD207 to DS209 for LED indication priority can turn off the indication The LED indication is always OFF for the High Performance model QCPU Process CPU Redundant CPU and Universal model QCPU 41 Corresponding CPU QnA 5 4 Canceling of Errors Q2ASCP U can perform the canc
51. l Information Program error location EDiagnostic Timing e When instruction executed SP UNIT ERROR The location designated by a link direct device 2 Read the individual information of the error using the GX Developer check the FROM TO instruction that corresponds to that numerical value program error location and correct when necessary The special function module that was accessed is experiencing a hardware fault Therefore change the faulty module Alternatively contact your local Mitsubishi representative RUN JO MO is not a network module off on The I O module special function module was ERR nearly removed completely removed or Flicker On mounted during running Collateral informationmmon CPU Status Common Information Module No Slot No Stop e Individual Information Program error location o EDiagnostic Timing Continue e When instruction executed SP UNIT ERROR The module other than special function module is specified by the special function module dedicated instruction Or itis not the corresponding special function module The module model specified by the special function module dedicated instruction and that specified by the parameter I O assignment is different Collateral informationmmon Common Information Module No Slot No e Individual Information Program error location MDiagnostic Timing e When instruction executed STOP RUN Read the individu
52. mationmmon Common Information File name Drive name Individual Information Parameter number EDiagnostic Timing At power ON At reset STOP RUN At writing to progurammable controller PARAMETER ERROR The parameter settings in the error individual information special register SD16 are illegal Collateral informationmmon Common Information File name Drive name Individual Information Parameter number MDiagnostic Timing At power ON At reset STOP gt RUN At writing to progurammable controller PARAMETER ERROR The parameter settings are corrupted Collateral informationmmon Common Information File name Drive name Individual Information Parameter number HDiagnostic Timing At power ON At reset STOP RUN At writing to progurammable controller Corrective Action Read the individual information of the error using the peripheral device check the parameter item corresponding to the numerical value parameter No and correct it Rewrite corrected parameters to the CPU module reload the CPU power supply and or reset the module If the same error occurs it is thought to be a hardware error Contact your local Mitsubishi representative PARAMETER ERROR When Use the following file is selected for the file register in the PLC file setting of the PLC parameter dialog box the specified file does not exist although the file register capacity has been set Collateral informationmmon
53. ng a program except for online program write perform reset operation and then place the CPU module in the RUN status e When remote STOP is switched to RUN the CPU module is not put in the PROG CHECK status but is placed in the RUN status 2 Latch clear operation Operate the RUN STOP key switch as follows to execute the latch clear operation a Turn the RUN STOP key switch of the CPU module from the STOP position to the L CLR position several times three or four times to flicker the USER LED on the CPU module front Normally the LED flickers when the switch is turned several times three or four times When the USER LED flickers it indicates that latch clear is ready b After the USER LED has flickered turning the RUN STOP key switch from the STOP position to the L CLR position again executes latch clear and lights up the USER LED If the USER LED comes on for two seconds and then goes off it indicates that latch clear is completed normally c To cancel latch clear midway turn the RUN STOP key switch to the RUN position to place the CPU module in the RUN state or turn it to the RESET position to make a reset POINT e You can make latch clear valid or invalid for each device via the device setting in parameter mode e Instead of using the RUN STOP key switch you can also execute the latch clear operation remotely from the peripheral device Refer to the Q2AS H CPU S1 User s Manual
54. nt Date_ Manual Number Jun 2000 IB NA 0800140 A First edition Nov 2001 IB NA 0800140 B partial correction Contact address Back cover Dec 2002 IB NA 0800140 C Bartial correction Section 2 1 3 1 3 2 4 1 5 1 5 2 Nov 2004 IB NA 0800140 D Partial correction Seon 4 1 5 2 2005 B NA 0800140 E Partial correction correction Section 2 1 3 2 4 1 Dec 2006 IB NA 0800140 F Partial correction Partial correction 5 3 5 4 Jun 2007 IB NA 0800140 G Partial correction Section 5 3 Contact address Back cover Dec 2013 IB NA 0800140 H partial correction Section 5 3 CONDITIONS OF USE FOR THE PRODUCT This manual confers no industrial property rights or any rights of any other kind nor dose it confer any patent licenses Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual 2000 Mitsubishi Electric Corporation A 2 CONTENTS 1 OVERVIEW o a dean o a 1 2 PERFORMANCE SPECIFICATION A A SA oe nuevas 2 2 1 Q2ASCPU Module Performance Specification mmmterrerrernosoo gt 2 3 PART NAMES AND SETTINGS a a aa 4 3 1 Part names and Settings NN 4 3 2 Relationship between switch operation and the LED indication 6 4 ABOUT FAIL SAFE CIRCUITS A A aia aliada 8 4 1 About Fail safe Circuits ate Se A A 8 5 ERROR CODES a a
55. ods Regulations IMDG code and the local transport regulations when transporting products after unpacking or repacking while Mitsubishi ships products with packages to comply with the transport regulations Also contact the transporters 43 MEMO 44 WARRANTY Please confirm the following product warranty details before using this product 1 Gratis Warranty Term and Gratis Warranty Range If any faults or defects hereinafter Failure found to be the responsibility of Mitsubishi occurs during use of the product within the gratis warranty term the product shall be repaired at no cost via the sales representative or Mitsubishi Service Company However if repairs are required onsite at domestic or overseas location expenses to send an engineer will be solely at the customer s discretion Mitsubishi shall not be held responsible for any re commissioning maintenance or testing on site that involves replacement of the failed module Gratis Warranty Term The gratis warranty term of the product shall be for one year after the date of purchase or delivery to a designated place Note that after manufacture and shipment from Mitsubishi the maximum distribution period shall be six 6 months and the longest gratis warranty term after manufacturing shall be eighteen 18 months The gratis warranty term of repair parts shall not exceed the gratis warranty term before repairs Gratis Warranty Range 1 The range shall be limi
56. on EDiagnostic Timing e When instruction executed Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem 4213 CAN T EXECUTE P More than 16 nesting levels are programmed Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing When instruction executed Keep nesting levels at 16 or under 32 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU QnA Error Contents and Cause CAN T EXECUTE I Though an interrupt input occurred the corresponding interrupt pointer does not exist Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing e When instruction executed CAN T EXECUTE I An IRET instruction does not exist in the executed interrupt program Collateral informationmmon Common Information Program error location Individual Information MDiagnostic Timing When instruction executed CAN T EXECUTE I The IRET instruction exists before the FEND instruction of the main routine program Collateral informationmmon Common Information Program error location e Individual Information HDiagnostic Timing When instruction executed INST FORMAT ERR The number of CHK
57. or removed When memory card is inserted ICM OPE ERROR A memory card that cannot be used with the CPU module has been installed Format memory card Collateral informationmmon 2302 Common Information Drive name a la card e Individual Information Enoc memory card MDiagnostic Timing When memory card is inserted or removed FILE SET ERROR The file designated at the PLC file settings in the e Read the individual information of the error using RUN parameters cannot be found peripheral device check to be sure that the Off Collateral informationmmon parameter drive name and file name correspond ERR 2400 Common Information File name Drive name to the numerical values there parameter Flicker Individual Information Parameter number number and correct MDiagnostic Timing Create a file created using parameters and load CPU Status At power ON At reset it to the CPU module Stop At writing to progurammable controller 1 CPU operation can be set in the parameters at error occurrence LED indication varies 22 Corresponding CPU QnA Error Contents and Cause FILE SET ERROR The file specified by parameters cannot be made Collateral informationmmon Common Information File name Drive name Individual Information Parameter number Diagnostic Timing At power ON At reset At writing to progurammable controller Corrective Action Read the individual information of the error using the peri
58. ory card while the programmable controller power is still on a Load the memory card b Load eject switch ON Load eject switch internal LED Lit Ejecting the memory card is prohibited POINT e Be sure to turn on the memory card load eject switch after you have loaded the memory card Otherwise you will not be able to use the card e Since mount processing is performed again after the memory card is inserted note that the scan time of one scan when mount processing is performed increases by a maximum of 10ms 4 ABOUT FAIL SAFE CIRCUITS 4 1 Fail Safe Circuit Concept When the programmable controller is powered ON and then OFF improper outputs may be generated temporarily depending on the delay time and start up time differences between the programmable controller power supply and the external power supply for the control target especially DC For example if the external power supply for the control target is powered ON and then the programmable controller is powered ON the DC output module may generate incorrect outputs temporarily upon the programmable controller power ON Therefore it is required to build the circuit that energizes the programmable controller by priority The external power failure or programmable controller failure may lead to the system error In order to eliminate the possibility of the system error and ensure fail safe operation build the following circuit outside the programmable controller
59. pheral device check to be sure that the parameter drive name and file name correspond to the numerical values there parameter number and correct e Check the space remaining in the memory card FILE SET ERROR Though the file register has been set in the pairing setting tracking setting the file register does not exist Collateral informationmmon Common Information File name Drive name Individual Information Parameter number IMDiagnostic Timing At power ON At reset At writing to progurammable controller Confirm the file register and parameter LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU FILE OPE ERROR The specified program does not exist in the program memory This error may occur when the ECALL EFCALL PSTOP PSCAN POFF or PLOW instruction is executed The specified file does not exist Collateral informationmmon Common Information File name Drive name Individual Information Program error location MDiagnostic Timing When instruction executed Read the individual information of the error using the peripheral device check to be sure that the program corresponds to the numerical values there program location and correct Create a file created using parameters and load it to the CPU module In case a specified file does not exist write the file to a target memory and or check the file specified with the instruction again
60. rror using the peripheral device check to be sure that the program corresponds to the numerical values there program location and correct Check to ensure that the designated file has not been write protected CPU operation can be set in the parameters at error occurrence LED indication varies 23 RUN Off On ERR Flicker On CPU Status Stop 1 Continue Error Contents and Cause CAN T EXE PRG There is a program file that uses a device that is out of the range set in the PLC parameter device setting After the PLC parameter setting is changed only the parameter is written into the PLC Collateral informationmmon Common Information File name Drive name e Individual Information EDiagnostic Timing At power ON At reset Corrective Action Read the common information of the error using the peripheral device check to be sure that the parameter device allocation setting and the program file device allocation correspond to the numerical values there file name and correct if necessary If PLC parameter device setting is changed batch write the parameter and program file into the PLC CAN T EXE PRG There are multiple program files although none has been set at the PLC parameter program settings Collateral informationmmon Common Information File name Drive name e Individual Information EDiagnostic Timing At power ON At reset Edit the PLC parame
61. t exist in the block of the SFC program Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing STOP RUN Corrective Action Write the program to the CPU module again using the peripheral device SFCP FORMAT ERR The structure of the SFC program is illegal The step specified in the TSET instruction does not exist In jump transition the host step number was specified as the destination step number Collateral informationmmon Common Information Program error location Individual Information MDiagnostic Timing STOP RUN SFCP FORMAT ERR The structure of the SFC program is illegal The step specified in the TAND instruction does not exist Collateral informationmmon Common Information Program error location Individual Information MDiagnostic Timing STOP RUN Write the program to the CPU module again using GX Developer Read the common information of the error using GX Developer and check and correct the error step corresponding to that value program error location Write the program to the CPU module again using GX Developer LED Status CPU Status RUN Off ERR Flicker CPU Status Stop 1 SFCP OPE ERROR The SFC program contains data that cannot be processed Collateral informationmmon Common Information Program error location Individual Information
62. tatus RUN Off ERR Flicker CPU Status Stop Corresponding CPU Error Contents and Cause MISSING END INS There is no END FEND instruction in the program Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing At power ON At reset STOP RUN CAN T SET P The total number of internal file pointers used by the program exceeds the number of internal file pointers set in the parameters Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing At power ON At reset STOP RUN CAN T SET P The common pointer Nos assigned to files overlap The local pointer Nos assigned to files overlap Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing At power ON At reset STOP RUN CAN T SET I The allocation pointer Nos assigned by files overlap Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing At power ON At reset STOP RUN OPERATION ERROR The instruction cannot process the contained data Collateral informationmmon Common Information Program error location e Individual Information MDiagnostic Timing e When instruction executed 1 OPERATION ERROR The number of setting dat
63. ted to normal use within the usage state usage methods and usage environment etc which follow the conditions and precautions etc given in the instruction manual user s manual and caution labels on the product 2 Even within the gratis warranty term repairs shall be charged for in the following cases 1 Failure occurring from inappropriate storage or handling carelessness or negligence by the user Failure caused by the user s hardware or software design 2 Failure caused by unapproved modifications etc to the product by the user 3 When the Mitsubishi product is assembled into a user s device Failure that could have been avoided if functions or structures judged as necessary in the legal safety measures the user s device is subject to or as necessary by industry standards had been provided 4 Failure that could have been avoided if consumable parts battery backlight fuse etc designated in the instruction manual had been correctly serviced or replaced 5 Failure caused by external irresistible forces such as fires or abnormal voltages and Failure caused by force majeure such as earthquakes lightning wind and water damage 6 Failure caused by reasons unpredictable by scientific technology standards at time of shipment from Mitsubishi 7 Any other failure found not to be the responsibility of Mitsubishi or that admitted not to be so by the user 2 Onerous repair term after discontinuation of production 1 Mitsub
64. ter program setting to yes Alternatively delete unneeded programs CAN T EXE PRG The program file is incorrect Alternatively the file contents are not those of a sequence program Collateral informationmmon Common Information File name Drive name e Individual Information EDiagnostic Timing At power ON At reset CAN T EXE PRG There are no program files at all Collateral informationmmon Common Information File name Drive name Individual Information EDiagnostic Timing At power ON At reset CAN T EXE PRG Two or more SFC normal programs or control programs have been designated Collateral informationmmon Common Information File name Drive name Individual Information EDiagnostic Timing At power ON At reset Check whether the program version is gt QPG and check the file contents to be sure they are for a sequence program Check program configuration Check parameters and program configuration 24 LED Status CPU Status RUN Off ERR Flicker CPU Status Stop Corresponding CPU Error Contents and Cause PARAMETER ERROR The PLC parameter settings for timer time limit setting the RUN PAUSE contact the common pointer number general data processing number of empty slots system interrupt settings baud rate setting and service processing setting are outside the range that can be used by the CPU module Collateral infor
65. tion Prohibited Applications include but not limited to the use of the PRODUCT in e Nuclear Power Plants and any other power plants operated by Power companies and or any other cases in which the public could be affected if any problem or fault occurs in the PRODUCT e Railway companies or Public service purposes and or any other cases in which establishment of a special quality assurance system is required by the Purchaser or End User e Aircraft or Aerospace Medical applications Train equipment transport equipment such as Elevator and Escalator Incineration and Fuel devices Vehicles Manned transportation Equipment for Recreation and Amusement and Safety devices handling of Nuclear or Hazardous Materials or Chemicals Mining and Drilling and or other applications where there is a significant risk of injury to the public or property Notwithstanding the above restrictions Mitsubishi may in its sole discretion authorize use of the PRODUCT in one or more of the Prohibited Applications provided that the usage of the PRODUCT is limited only for the specific applications agreed to by Mitsubishi and provided further that no special quality assurance or fail safe redundant or other safety features which exceed the general specifications of the PRODUCTS are required For details please contact the Mitsubishi representative in your region A 1 REVISIONS The manual number is given on the bottom right of the front cover Pri
66. tion and correct the problem CPU operation can be set in the parameters at error occurrence LED indication varies 33 RUN Off On ERR Flicker On CPU Status Stop Continue Corresponding CPU Error Contents and Cause EXTEND INST ERR The designation of an AD57 AD58 control instruction was wrong Collateral informationmmon Common Information Program error location Individual Information Diagnostic Timing When instruction executed Corrective Action Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem SFCP CODE ERROR No SFCP or SFCPEND instruction in SFC program Collateral informationmmon Common Information Program error location Individual Information EDiagnostic Timing STOP RUN CAN T SET BL The block number designated by the SFC program exceeds the range Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing STOP RUN CAN T SET BL Block number designations overlap in SFC program Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing STOP RUN CAN T SET S A step number designated in an SFC program exceeds the range Collateral informationmmon Common
67. tive Action Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem 4202 FOR NEXT ERROR More than 16 nesting levels are programmed Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing e When instruction executed Keep nesting levels at 16 or under 4203 FOR NEXT ERROR A BREAK instruction was executed although no FOR instruction has been executed prior to that Collateral informationmmon Common Information Program error location e Individual Information Diagnostic Timing e When instruction executed 4210 CAN T EXECUTE P The CALL instruction is executed but there is no subroutine at the specified pointer Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing e When instruction executed 4211 CAN T EXECUTE P There was no RET instruction in the executed subroutine program Collateral informationmmon Common Information Program error location e Individual Information EDiagnostic Timing When instruction executed 4212 CAN T EXECUTE P The RET instruction exists before the FEND instruction of the main routine program Collateral informationmmon Common Information Program error location Individual Informati
68. truction is wrong The link direct device JON setting is incorrect The module No network No number of character strings exceeds the range that can be specified Collateral informationmmon Common Information Program error location Individual Information Diagnostic Timing When instruction executed OPERATION ERROR The configuration of the PID dedicated instruction is incorrect Collateral informationmmon Common Information Program error location Individual Information Diagnostic Timing When instruction executed Corrective Action Read the common information of the error using the peripheral device check error step corresponding to its numerical value program error location and correct the problem OPERATION ERROR The number of settings is beyond the range Collateral informationmmon Common Information Program error location e Individual Information Diagnostic Timing When instruction executed Read the common information of the error using peripheral device and check and correct the program corresponding to that value program error location OPERATION ERROR Numbers of execution to the CC Link instruction are beyond 32 Collateral informationmmon Common Information Program error location Individual Information MDiagnostic Timing When instruction executed Set the numbers of execution to the CC Link instruction to 32 or less OPERATION ERR
69. ve Name e Individual Information EDiagnostic Timing Always Change the battery On Off CPU Status Continue BATTERY ERROR Voltage of the battery on memory card 2 has dropped below stipulated level Collateral informationmmon Common Information Drive Name e Individual Information EDiagnostic Timing Always Change the battery 18 CPU Status Continue Error Contents and Cause UNIT VERIFY ERR 1 0 module information power ON is changed I O module or special function module not installed properly or installed on the base unit Collateral informationmmon Common Information Module No Slot No For Remote I O network Network No Station No Individual Information EDiagnostic Timing When an END instruction executed Corrective Action Read the common information of the error using the peripheral device and check and or change the module that corresponds to the numerical value module number there Alternatively monitor the special registers SD1400 to SD1431 at a peripheral device and change the fuse at the output module whose bit has a value of 1 When a GOT is bus connected to the main base unit or extension base unit check the connection status of the extension cable and the grounding status of the GOT LED Status CPU Status RUN Off On ERR Flicker On CPU Status Stop Continue 1 SP UNIT LAY ERR In
70. vice check its value time and shorten the scan time Change the initial execution monitoring time or the WDT value in the PLC RAS setting of the PLC parameter Resolve the endless loop caused by jump transition LED Status CPU Status RUN Off ERR Flicker CPU Status Stop 5010 PRG TIME OVER The program scan time exceeded the constant scan setting time specified in the PLC RAS setting of the PLC parameter Collateral informationmmon Common Information Time value set e Individual Information Time value actually measured EDiagnostic Timing Always PRG TIME OVER The low speed program execution time specified in the PLC RAS setting of the PLC parameter exceeded the excess time of the constant scan Collateral informationmmon Common Information Time value set Individual Information Time value actually measured EDiagnostic Timing Always e Review the constant scan setting time e Review the constant scan setting time and low speed program execution time in the PLC parameter so that the excess time of constant scan can be fully secured 5011 PRG TIME OVER The scan time of the low speed execution type program exceeded the low speed execution watch time specified in the PLC RAS setting of the PLC parameter dialog box Collateral informationmmon Common Information Time value set e Individual Information Time value actually measured MDi
71. xtension cable and the earth status of the GOT RUN Off On ERR Flicker On CPU Status Stop 4 Continue An interruption has occurred although there is no Bre interrupt module Any of the mounted modules is experiencing a ERR 1310 Collateral informationmmon hardware fault Therefore check the mounted Flicker Common Information modules and change the faulty module Contact individual Information your local Mitsubishi representative CPU Status EDiagnostic Timing During interrupt Stop SP UNIT DOWN When PLC parameter I O allocation was being made there was no return signal from the special RUN function module during initial processing Off stage When error is generated the head I O The CPU module base unit and or the special ERR 1401 number of the special function module that function module that was accessed is experiencing Flicker corresponds to the common information is stored a hardware fault Contact your local Mitsubishi Collateral informationmmon representative CPU Status Common Information Module No Slot No Stop e Individual Information EDiagnostic Timing At power ON At reset 16 QnA LED Status Corresponding Error Contents and Cause Corrective Action CPU Status CPU SP UNIT DOWN The special function module was accessed during the execution of a FROM TO instruction set but there was no response When an error is generated the program error T
72. ymbolic language MELSAP3 SFC Processing 0 2 us step 0 075 us step speed sequence MOV 0 6 us step 0 225 us step instructions Constant scan Function that makes 5 to 2000 ms configurable in multiple of 5 ms module scan time constant Memory capacity Capacity of loading memory cards 2036 kbyte maximum Number of 28k steps 60 k steps 28 k steps 60 k steps Program steps maximum maximum maximum maximum bi are of aos 60 files 28 files 60 files Number of usable points in program me values to VERE I O device points 8192 points X Y0 to 1FFF Number of 512 points 512 points points I O points X Y0 to 1FF 1024 points X Y0 to 3FF 1024 points bl X Y0 to 3FF accessible to actual I O modules X Y0 to 1FF Year month date hour minute second day of week auto detects leap years Accuracy 1 7 to 4 9s TYP 1 7s d at O depress centigrade Accuracy 1 0 to 5 2s TYP 2 2s d at 25 depress centigrade Accuracy 7 3 to 2 5s TYP 1 9s d at 55 depress centigrade Allowable momentary E power failure period yp pply Me Y Mass 0 5 kg 0 5 kg 0 5 kg 0 5 kg 130 H mm x 54 5 W mm x 110 D mm 5 12 inch x 2 15 inch x 4 33 inch Clock function External dimension 3 PART NAMES AND SETTINGS 3 1 Part names and Settings This section describes the name and setting of each part of the module Q2ASCPU Q2ASCPU S1 Q2ASHCPU Q2ASHCPU S1
73. ystem switching e Individual Information EDiagnostic Timing Always Check the contro Corrective Action I system condition LED Status CPU Status CPU Status Continue CAN T EXE CHANGE Since the standby system is in an error or similar status in the redundant system the control system cannot be switched to the standby system When an attempt was made to execute system switching the control system could not be switched to the standby system due to a network error of the control system This can be detected from the control system of the redundant system Collateral informationmmon Common Information Reason s for system switching e Individual Information EDiagnostic Timing At switching request Check the standby system condition CAN T EXE CHANGE Switching is disabled because of a bus switching module error This can be detected from the control system of the redundant system Collateral informationmmon Common Information Reason s for system switching e Individual Information EDiagnostic Timing At switching request This is a bus switching module hardware fault Contact your loc al Mitsubishi representative DUAL SYS ERROR The link module mounted on the standby system CPU module is the remote master station Collateral informationmmon Common Information e Individual Information Diagnostic Timing Always Chec

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