ABB System

The CPU was unable to locate at least one required parameter during operation. This parameter error can prevent proper configuration or execution of CPU functions, potentially leading to system misbehavior, incomplete startup, or a halt in processing. It indicates a configuration or memory issue.

The CPU encountered an error while attempting to read the value of at least one parameter. This can signify data corruption, an inaccessible memory location, or a configuration issue, affecting the CPU's ability to operate as intended and potentially leading to incorrect processing or system failures.

The type scaling process failed during PLC startup. This is a critical error that prevents the PLC from correctly interpreting data types and ranges for I/O and internal variables. It can halt the startup process, lead to incorrect calculations, and compromise process control.

The flash memory, specifically for the flash disk, has entered a temporary protected (read-only) 'panic mode'. This critical state is typically triggered to prevent further data corruption when severe integrity issues are detected, rendering the system unable to write data and potentially causing instability.

A severe error has occurred on the I/O bus module, significantly impacting its operation. More detailed information regarding the specific cause and context of this error is available in the system log files, which should be consulted for proper diagnosis and troubleshooting.

A severe, fatal error has occurred on the I/O bus module, leading to a critical system failure. This likely halts operation and requires immediate investigation into the system logs for specific details on the cause. Unresolved, this error will prevent the system from functioning.

A fatal error has occurred on the I/O bus module, causing the entire system to stop running. This indicates a critical fault that has rendered the system inoperable. Immediate intervention is required to identify and rectify the issue and restore system operation.

An error occurred while attempting to set a parameter for the I/O bus master. This indicates a problem with configuring the communication master, potentially preventing it from correctly initiating or controlling connected I/O devices. This can lead to a complete loss of I/O communication.

A resource failure has occurred on the I/O bus module. This means a critical component or allocated resource within the module (e.g., memory, processing units, communication channels) has become unavailable or corrupted, leading to operational issues and potential loss of I/O control.

The display unit has an incompatible or incorrect firmware version installed. This mismatch can lead to the display not functioning, showing corrupted graphics, failing to communicate with the main processor, or displaying incorrect information. This hinders effective user interaction and diagnosis.

The CPU failed to set the 'Reboot at powerfail' parameter, which controls the system's behavior during power interruptions. This means the system might not restart correctly or automatically after a power failure, potentially requiring manual intervention to resume operation. This impacts system resilience.

The CPU has detected an unsupported or invalid combination of plugged option boards. This hardware configuration error can prevent the CPU from starting or operating correctly, as the system does not recognize the installed modules. This requires physical verification of the setup.

A timeout occurred during an operation on the I/O bus module. This indicates that a communication or processing step did not complete within its expected timeframe, possibly due to bus congestion, a slow response from a connected device, or a module malfunction. This can lead to unresponsive I/O.

A restore operation on the CPU, likely involving configuration or application data, has failed. This can lead to the CPU operating with incorrect settings, an older configuration, or failing to start completely, compromising the intended system functionality. Data integrity is at risk.

An I/O bus module timed out during its initialization sequence. This critical error suggests a problem preventing the module from becoming ready for operation, possibly due to a hardware fault, firmware issue, or communication problem. The module will not be functional.

An I/O bus module failed to complete its reset sequence within the allotted time. This indicates a severe issue with the module's internal processing or its ability to respond to control signals, halting its operation and preventing it from becoming ready for use.

Communication has been completely lost with an I/O bus module, indicating a breakdown in the communication link. This critical failure means the module is no longer accessible or functional within the system, leading to a complete loss of I/O control for that module.

The flash disk medium has almost used its complete spare capacity or is already dead. This is a severe warning indicating imminent or actual storage failure, which can lead to irreversible data loss, system operational halts, and inability to store critical data. Immediate action is required.

A general test error has been reported by an I/O bus module on a specific channel. This indicates a failure during an internal diagnostic test, implying an issue with the module's hardware or firmware functionality related to that particular channel. This can compromise the reliability of the affected I/O.

A test pulse error has been detected on an I/O bus module channel. This indicates a problem during the module's self-diagnosis, where the generated test pulse or its response was unexpected, potentially due to wiring faults or sensor malfunctions. It can compromise the reliability of the I/O channel.

A test pulse cross-talk error has occurred on an I/O bus module channel. This suggests unwanted interference between adjacent channels or an issue where a test pulse is being incorrectly detected on another channel. This can lead to unreliable I/O operation, incorrect data, and system instability.

The I/O bus module failed to complete its maximum allowed wait run time. This indicates a significant delay in processing or a communication deadlock, potentially causing I/O operations to time out and impacting system responsiveness or control. It suggests a performance or communication bottleneck.

The F-Parameter configuration for the I/O bus module does not match the module's physical address switch value. This discrepancy indicates an incorrect setup, potentially leading to improper I/O operation, communication failures, and system instability. Incorrect configuration can halt module functionality.

An internal data interchange failure has occurred within the I/O bus module. This suggests a critical hardware malfunction or corruption within the module's internal communication pathways, preventing proper data exchange and rendering the module inoperable. It is a severe internal fault.

The I/O bus module has incompatible hardware and/or firmware versions. This mismatch can lead to unexpected behavior, functional limitations, or complete operational failure as components are not designed to work together, potentially causing system instability.

A general internal error has occurred within the I/O bus module. This signifies an unspecified hardware or software fault within the module itself, potentially halting its functionality, causing unreliable operation, or leading to system downtime. It indicates a critical internal issue.

The sensor voltage detected on the I/O bus module is below the acceptable threshold. This indicates a potential issue with the power supply to the connected sensors or a fault within the sensors themselves, leading to inaccurate readings or complete sensor malfunction and unreliable process control.

A general test error has been reported by an I/O bus module. This indicates a failure during an internal diagnostic test, implying an issue with the module's hardware or firmware functionality. This can lead to unreliable I/O behavior or a complete module failure.

An error occurred during the initialization process of the system's display unit. This means the display may not be functioning correctly, showing no output, or displaying garbled information, hindering user interaction, diagnosis, and overall system usability.

A 'stuck-at' error has been detected on an I/O bus module, indicating that a signal line or a logic gate within the module is permanently fixed at a high or low state. This prevents proper signal transmission or processing, leading to incorrect I/O values and unreliable control.

A general test error has been reported by an I/O bus module on a specific channel. This indicates a failure during an internal diagnostic test, implying an issue with the module's hardware or firmware functionality related to that particular channel. This can compromise the reliability of the affected I/O.

A cross-talk error has been detected on an I/O bus module. This means unwanted signal coupling is occurring between adjacent channels, leading to incorrect readings or control actions, and potentially compromising system integrity. This interference affects signal reliability.

For an I/O bus module, the configured discrepancy time for a specific channel has expired. This typically occurs in safety applications where redundant signals do not match within the allowed time frame, indicating a potential sensor malfunction, wiring issue, or incorrect time setting. This can lead to safety shutdowns.

The measured value on an I/O bus module channel exceeds the configured tolerance window compared to an expected or redundant value. This indicates a potential sensor malfunction, wiring issue, or an incorrectly set tolerance. It can lead to false alarms or inaccurate process control.

The CPU failed to load the boot project because of an issue with loading retain data. This indicates that critical persistent data, necessary for the project's operation, could not be retrieved, potentially leading to an incomplete or incorrect system startup. This can cause the PLC to run with default or corrupted settings.

The CPU failed to load the boot project because the retain data detected does not match the project's requirements. This mismatch can occur after firmware updates or project changes, causing the CPU to reject the current configuration and potentially halting operation. Data consistency is crucial.

The CPU was unable to load the boot project because it detected insufficient licensing for the application. This prevents the application from starting and running, indicating a licensing issue rather than a hardware fault. The PLC may enter demo or stop mode, rendering it inoperable for licensed features.

The CPU failed to load the boot project for an unspecified reason. This general error indicates a problem during the loading process that could stem from various issues, including corrupted project files, transient hardware issues, or firmware problems. Further investigation is needed to pinpoint the cause.

A backup operation on the CPU, such as saving configuration or application data, has failed. This means recent changes may not be properly archived, putting critical data at risk in case of a system failure, power loss, or accidental deletion. Regular backups are crucial for system recovery.

A 'stuck-at' error has been detected on an I/O bus module for a specific channel. This indicates that a signal line or a logic gate within that channel is permanently fixed at a high or low state, preventing proper signal transmission or processing. This leads to incorrect I/O values.

A readback error has occurred on an I/O bus module. This means the value read back from an output or an internal register does not match the value that was commanded or expected. This indicates a potential hardware fault, wiring issue, or corrupted internal state, compromising output verification.

A cross-talk error has been detected on a specific channel of an I/O bus module. This means unwanted signal coupling is occurring between adjacent channels, leading to incorrect readings or control actions, and potentially compromising system integrity. This interference affects signal reliability.

The root partition of the flash disk has 1% or less free space remaining. This is a critical error indicating imminent disk space exhaustion, which can lead to system instability, crashes, inability to write logs, or update firmware. Urgent action is required to prevent system failure.

A general test error has been reported by an I/O bus module on a specific channel. This indicates a failure during an internal diagnostic test, implying an issue with the module's hardware or firmware functionality related to that particular channel. This can compromise the reliability of the affected I/O.

A general internal error has occurred within a specific channel of the I/O bus module. This signifies an unspecified hardware or software fault within that particular channel, potentially halting its functionality or causing unreliable operation. This indicates a localized critical internal issue.

The I/O bus module has detected a communication protocol variant that is not supported. This indicates an incompatibility in communication standards between the module and other devices, preventing proper data exchange and potentially halting the module's operation. This is a configuration or firmware mismatch.

An I/O bus module has been identified as not having passed its factory tests. This indicates a manufacturing defect or pre-existing hardware fault, which could lead to unreliable operation, premature failure, or incorrect functionality. This module is likely faulty out of the box.

The required process voltage (UP or UP3) for the I/O bus module is not present. This critical power supply issue will prevent the I/O module and any connected field devices from operating correctly, resulting in a complete loss of I/O functionality.

The flash disk medium has utilized 80% of its total spare capacity. This is a warning that the flash storage is approaching its wear limit, which can lead to reduced performance, slower write operations, and eventual component failure if not addressed. Proactive measures are recommended.

The I/O bus module's compensation channel is providing incorrect measurements or a false temperature reading. This can lead to inaccurate process control, improper compensation for sensor errors, or system instability, especially in temperature-sensitive applications. Untrustworthy data poses operational risks.

For analog input AI531, the measurement is incorrect due to an excessively high potential difference. For PWM output CD522, the duty cycle is operating outside its acceptable range. Both issues can lead to inaccurate control, component damage, or system instability, requiring immediate attention to prevent operational errors.

The root partition of the flash disk has 15% or less free space remaining. This warning indicates that critical system operations may be impacted, potentially leading to instability, inability to store new logs, updates, or temporary files. Continued operation with low space can cause system crashes.

The system's battery is either empty or entirely missing. This warning indicates that non-volatile data, such as configuration parameters, retained variables, or real-time clock settings, may be lost during power cycles if the issue is not resolved. This can lead to system re-configuration needs on every restart.

An I/O module has been removed from a hot swap terminal unit while the system was operational. This is typically a warning indicating a change in the I/O configuration. If unintentional, this can lead to incomplete I/O functionality or system errors related to the missing module.

An incorrect I/O module type has been plugged into a hot swap terminal unit, replacing the module that was originally expected. This module type mismatch can lead to configuration errors, prevent the system from operating correctly, and potentially damage the module or terminal unit.

Communication has been lost with an I/O module installed on a hot swap terminal unit. This indicates a failure in the communication link or a fault within the module itself, preventing data exchange and rendering the I/O module inoperable. This affects all connected sensors/actuators.

An I/O module that does not support hot swap functionality has been detected on a hot swap terminal unit. This configuration mismatch can lead to improper operation, module damage if removed/inserted while powered, or general system errors. Modules not designed for hot swap require specific handling.

The system requires a hot swap terminal unit for proper operation, but it was not detected or is missing. This configuration error can prevent the system from recognizing or communicating with I/O modules, leading to incomplete system functionality or a halt.

The hot swap terminal unit itself has been identified as defective. This hardware fault can prevent proper communication with any I/O modules connected to it, potentially leading to widespread I/O errors and system instability. All modules on this unit will be affected.

Communication with the hot swap terminal unit has been lost. This can be due to a temporary glitch or a hardware failure in the terminal unit or its communication path, affecting all I/O modules connected to it. This can lead to loss of I/O control.