Error Processing Section 11-2 11-2-5 Error Messages The following tables show error messages for errors which can occur in CS- series PLCs and indicate the likely cause of the errors. !Caution Always check the safety of the controlled system before turning the power supply OFF or ON. CPU Errors A CPU error has occurred if the indicators have the following conditions in RUN or MONITOR mode. A Programming Device, such as a Programming Console, cannot be connected when the CPU Unit is in this state. Power Supply CPU Unit Indicators Unit Indicator POWER RUN ERR/ALM INH PRPHL COMM ON --- ON --- --- --- Status Error Program- Error Error Flags Probable cause Possible remedy ming flags in code (in and Console Auxiliary A400) word display Area data Stopped CPU error – – – – None None None Watchdog timer has Turn the power OFF and exceeded maxi- restart. The Unit may be mum setting. faulty. Contact your OMRON representative if the problem persists. CPU Reset The following indicators status indicates an Expansion Rack power interrup- tion, not a CPU error. A Programming Device, such as a Programming Con- sole, cannot be connected when the CPU Unit is in this state. Power Supply CPU Unit Indicators Unit Indicator POWER RUN ERR/ALM INH PRPHL COMM ON OFF OFF OFF --- --- Status Error Program- Error Error Flags Probable cause Possible remedy ming flags in code (in Console Auxiliary A400) display Area Stopped CPU reset – – – – None None None Power is not being Supply power to the Expan- supplied to an sion Rack. Expansion Rack. An I/O Connecting Turn OFF the power supply, Cable is not con- check the connections all I/O nected properly. Connecting Cables, and turn For example, the IN the power supply back ON. and OUT connec- tions between the CPU Rack and an Expansion Rack are reversed. Note When power supply is interrupted to an Expansion Rack, the CPU Unit will stop program execution and the same operations as are performed when the power supply to the CPU Unit is interrupted will be performed. For example, if 481 Error Processing Section 11-2 the power OFF interrupt task is enabled, it will be executed. If power is then restored to the Expansion Rack, the CPU Unit will perform startup processing, i.e., the same operational status as existed before the power interrupt will not necessarily be continued. CPU Standby Errors A CPU standby error has occurred if the indicators have the following condi- tions in RUN or MONITOR mode. Power Supply CPU Unit Indicators Unit Indicator POWER RUN ERR/ALM INH PRPHL COMM ON OFF OFF --- --- --- Status Error Program- Error Error Flags Probable cause Possible remedy ming flags in code (in Console Auxiliary A400) display Area Stopped CPU CPU None None None Recognition of one Turn OFF the power supply, standby WAIT’G or more of the fol- check the mounting and set- error lowing Unit has not tings of all the Unit and the been completed: Inner Board, and turn the CPU Bus Units, power supply back ON. Special I/O Units, High-density I/O Units, Interrupt Input Units, or an Inner Board. Power is not being Check the power supply to supplied to a Slave the Slave Racks and termi- Rack or the termina- nating resistance settings for tor is not recognized Remote I/O Systems. Also in a Remote I/O Sys- check cable connections in tem. the Remote I/O Systems. Startup Condition The CS1-H CPU Units support a Startup Condition setting. To start the CPU Unit in MONITOR or PROGRAM mode even if there is one or more Boards or Units that has not completed startup processing, set the Startup Condition to 1. PLC Setup Programming Con- Name Settings Default sole setting address Word Bit 83 15 Startup Condition 0: Wait for Units 0: Wait for Units and Boards. and Boards. 1: Don’t wait. Note The operation for Inner Boards, however, also depends on the next setting of the Inner Board Setting in word 84, but 15. This bit must also be turned ON to not wait for Inner Boards. Fatal Errors A fatal error has occurred if the indicators have the following conditions in RUN or MONITOR mode. Power Supply CPU Unit Indicators Unit Indicator POWER RUN ERR/ALM INH PRPHL COMM ON OFF ON --- --- --- 482 Error Processing Section 11-2 Connect the CX-Programmer or a Programming Console to display the error message (in the PLC Error Window on the CX-Programmer). The cause of the error can be determined from the error message and related Auxiliary Area flags and words. Errors are listed in order of importance. When two or more errors occur at the same time, the more serious error’s error code will be recorded in A400. If the IOM Hold Bit hasn’t been turned ON to protect I/O memory, all non- retained areas of I/O memory will be cleared when a fatal error other than FALS(007) occurs. If the IOM Hold Bit is ON, the contents of I/O memory will be retained but all outputs will be turned OFF. If the IOM Hold Bit hasn’t been turned ON to protect I/O memory, all non- retained areas of I/O memory will be cleared when a fatal error other than FALS(007) occurs. When the IOM Hold Bit is ON, the contents of I/O memory will be retained but all outputs will be turned OFF. Error Program- Error Flag and Probable cause Possible remedy ming code (in word data Console A400) display Memory MEMORY 80F1 A40115: An error has occurred in See below. error ERR Memory memory. A bit in A403 will Error Flag turn ON to show the location A403: of the error as listed below. Memory A40300 ON: Check the program and correct the error. Error Loca- A checksum error has tion occurred in the user program memory. An illegal instruc- tion was detected. A40304 ON: Clear the entire PLC Setup to 0000 and A checksum error has reenter the settings. occurred in the PLC Setup. A40305 ON: Initialize the registered I/O table and gen- A checksum error has erate a new I/O table. occurred in the registered I/ O table. A40307 ON: Initialize the routing tables and reenter A checksum error has the tables. occurred in the routing tables. A40308 ON: Initialize the CS-series CPU Bus Unit A checksum error has setup and reenter the settings. occurred in the CS-series CPU Bus Unit setup. A40309 ON: Make sure that the Memory Card is An error occurred during installed properly and that the correct file automatic transfer from the is on the Card. Memory Card at startup. A40310 ON: Retransfer the user program and param- Flash memory has failed. eter data. 483 Error Processing Section 11-2 Error Program- Error Flag and Probable cause Possible remedy ming code (in word data Console A400) display I/O Bus I/O BUS 80C0 to A40114: I/O Error has occurred in the bus Try turning the power OFF and ON error ERR 80C7 or Bus Error line between the CPU and I/ again. 80CF Flag O Units. If the error isn’t corrected, turn the power A404: I/O A40400 to A40407 contain OFF and check cable connections Bus Error the error slot number (00 to between the I/O Units and Racks. Slot and 09) in binary. 0F indicates Check for damage to the cable or Units. Rack Num- that the slot cannot be deter- bers mined. Correct the cause of the error and then turn the Rack’s power supply OFF and A40408 to A40415 contain then ON again the error rack number (00 to 07) in binary. 0F indicates that the rack cannot be determined. I/O BUS 80CB A404: I/O I/O bus error B: CPU Unit is Turn OFF the power, replace the Back- ERR B Bus Error mounted to a Duplex Back- plane with a CS1W-BC@@@ Backplane, Slot and plane. and turn the power back ON. Rack Num- Note: bers A40400 to A40407 = 0F hex A40408 to A40415 = 0B hex Unit/Rack UNIT No. 80E9 A40113: The same number has been Check the unit numbers, eliminate the Number DPL ERR Duplication allocated to more than one duplications, and turn the Rack’s power Duplica- Error Flag CS-series CPU Bus Unit. supply OFF and then ON again. tion error A410: CPU Bits A41000 to A41015 cor- Bus Unit respond to unit numbers 0 to Duplicate F. Number Flags A40113: The same number has been Check the unit numbers, eliminate the Duplication allocated to more than one duplications, and turn the Rack’s power Error Flag Special I/O Unit. supply OFF and then ON again. A411 to Bits A41100 to A41615 cor- A416: Spe- respond to unit numbers 0 to cial I/O Unit 95. Duplicate Number Flags RACK No. 80EA A409: The same I/O word has Check allocations to Units on the rack DPL ERR Expansion been allocated to more than number whose bit in ON in A40900 to Rack Dupli- one Basic I/O Unit. A40907. Correct the allocations so that cate Rack no words are allocated more than once, Number including to Units on other Racks, and turn the Rack’s power supply OFF and then ON again. An Expansion I/O Rack’s Check the first word setting for the Rack starting word address indicated in A40900 to A40907 and exceeds CIO 0901. change the setting to a valid word The corresponding bit in address below CIO 0901 with a Pro- A40900 to A40907 (Racks 0 gramming Device.