CSLS fault detection, system response, and repair procedures > SIS CHARMs logic solver diagnostic parameters

CSLS FailedAlerts diagnostic parameter

Table: FailedAlerts diagnostic parameter

Parameter name in Diagnostics Explorer

Context in Diagnostics Explorer

Runtime path

Description

FailedAlerts

CSLS

CSLS_NAME/FAILED_ALERTS

Failure alert status of the CHARM smart logic solver

Table: FailedAlerts condition text

Condition Text in FailedAlerts

Meaning

Action

Both SISNet Connections on Logic Solver are Bad

The Logic Solver cannot communicate on the local peer bus or Local Safety Network.

Replace the logic solver card with the error (check the value of P2P_STATUS).

CHARMbus Communications on CHARMs Logic Solver are Bad

Both Primary and Secondary CHARMbus on the CHARMs Smart Logic Solver have failed.

If the fatal condition is persistent, do a manual reset of affected card and contact Emerson Technical Support. If the fatal condition was momentary, contact Emerson Technical Support to report the error.

Control Data Mismatch Between Cores

The main processors of the Logic Solvers detected a mismatch in outputs or secure parameter data.

Control Subsystem Compare Error

The main processors of the Logic Solvers detected a mismatch in outputs or secure parameter data.

Control Subsystem Scheduling Error

The Control subsystem is unable to complete module execution and output delivery in its scheduled period.

Change to a slower logic solver scan rate and re-download.

Dual Active [CHARMs] Logic Solvers

One Smart Logic Solver in a redundant pair has been reset because both Smart Logic Solvers were functioning as the Active.

If the fatal condition is persistent, do a manual reset of affected card and contact Emerson Technical Support. If the fatal condition was momentary, contact Emerson Technical Support to report the error.

Hardware Watchdog Failure

One Smart Logic Solver in a redundant pair has been reset because both Smart Logic Solvers were functioning as the Active.

Main Processor 2 Compare of I/O Processor Data Failed

The Main Processor 2 validates the I/O Processor's calculations. This condition is caused by a mismatch in the results of the calculation.

Main Processor 2 Compare of I/O Processor Frequency Failed

The Main Processor 2 validates the I/O Processor's calculations. This condition is caused by a mismatch in the results of the calculation.

Memory Test Failure

A failure was detected in a periodic test of the main processor Random Access Memory (RAM) or a power-up test of RAM and Non-Volatile Memory (NVM).

Program Assertion

An unspecified internal software error causes a null pointer to be returned.

Resource Error

The system software could not obtain a hardware or software resource.

SIS Communications on CHARMs Logic Solver are Bad

The Logic Solver is no longer receiving local peer communications.

Task Checkpoint Error

A Logic Solver software task failed to complete properly or in a timely manner.

Timeout Between Main Processor 2 and I/O Processor

The number of scans, for the I/O Processor to respond to the Main Processor 2, has been exceeded. This condition reveals fatal errors detected by the I/O Processor.

Timeout on Inter-Processor Link Between Main Processor 1 and Main Processor 2

The number of scans, for one main processor to respond to the other, has been exceeded.

Uncommanded Switchover

The Active redundant Smart Logic Solver has been reset (becoming the standby redundant Smart Logic Solver) because of an internally-detected error.

Unspecified Hardware Error

An unspecified hardware error such as a failure in the commission or power monitor circuitry occurred.