Landis+Gyr AX alerts

These alerts, errors, and warnings apply to Landis+Gyr AX meters with a FlexNet SmartPoint module.

Alarms may vary by device type. Please check the alarms for your meter's device type.

Table 1. Landis+Gyr DT-51 alerts
Meter event nameRNI event nameEvent descriptionEvent triggerEvent sourceXylem recommended action
BrownoutBrown OutThe voltage for the meter has dropped below the brownout threshold for a length of time.Each time the FlexNet module samples the voltage registers from the meter, the minimum voltage is compared to the “Brownout Voltage Threshold”. If the minimum voltage is lower than the threshold, the brownout bit is set. The brownout bit is cleared when the voltage average window resets. The first sample time in which the FlexNet module reads a voltage that sets the brownout condition an optional alarm message is sent. As a backup, in case that transmission was not received, the brownout bit is set in each meter read message until the voltage average window expires even if the brownout line condition has already cleared.Radio EndpointInvestigate reason for low voltage in field. Alarm reset at end of the VAW.
Click CountN/AClick Count. The meter is currently undergoing transformer breaker operations.A click event occurs where the power is lost long enough to detect the loss (6-240 line cycles meter configuration setting) but not for continued loss of power that crosses the Outage Time threshold where meter would then go into last gasp. The click counter field increments each time a short duration voltage outage occurs (the outage is greater than the click count threshold setting but shorter than the Outage Time Threshold setting). The counter goes to 255 before resetting back to zero.Radio EndpointInvestigate possible source of momentary outages in field. Change the voltage source to reduce transformer breaker operations.
Configuration ErrorConfiguration ErrorThis indicates a problem with the meter’s metrology configuration or program. .C1219 standard errorMetrologyReview and reconfigure metrology per manufacturer.
High Temperature / Hot SocketHigh Temperature DetectedHigh Temperature. The meter's internal temperature has exceeded the configured temperature threshold.The FlexNet microprocessor uses an embedded temperature sensor to measure the ambient temperature inside of the meter plastic enclosure. The temperature is sampled every 10 seconds. If the temperature read exceeds the High Temperature threshold, ten alarm messages with the high temperature alarm bit set are immediately transmitted.Radio EndpointOn-site visit is required to investigate the meter socket and service.
High VoltageOver VoltageHigh Voltage. The meter has detected that the voltage exceeds the high voltage threshold.Each time the SmartPoint module samples the voltage registers from the meter, the maximum voltage is compared to the High Voltage Threshold. If the maximum voltage is greater than the threshold, the over voltage bit is set. The over voltage bit is cleared when the voltage average window resets.Radio EndpointOn-site visit is required to investigate the meter socket and service.
In-Time SyncTime AdjustedIn-Time Sync. The endpoint or device's time synchronizes with the tower.The endpoint or device's time is not synchronized with the tower.Radio EndpointNo user action is required. This is a status indication only.
Measurement ErrorMetrology Measurement ErrorMeasurement error.Meter detected a bad voltage reference.MetrologySelf-correcting. Contact Sensus if the issue persists.
Meter Read FailureMeter Read FailureMeter Read Failure. The meter could not be read due to no response, bad CRC/Checksum/Parity, or invalid data.The meter could not be read due to no response, bad CRC/Checksum/Parity, or invalid data.Radio EndpointSelf-resolving. Replace the meter if the alarm continues repeatedly.
NONVOL ErrorMetrology Non Volatile Memory ErrorNONVOL Error. The meter cannot access the EEPROM.The metrology cannot access the nonvolatile ram. Meter will show Er 000 200 on the display. Metrology will set NONVOL_MEM_FAILURE_FLAG in STD TBL 3 in the meter.MetrologyReplace meter.
Over Class AmpsOver CurrentOver Class Amps. Set when the current flow exceeds the rated class amps.Current flow exceeds the rated class amps.Radio EndpointOn-site visit is required to investigate the meter socket and service.
Power FailPower FailPower Fail. The meter does not have any AC power.Each time the FlexNet module detects that the power monitor signal is de-asserted, the module enters a low power state and enters a hold-off period equal to the number of seconds stored as the “Outage Time Threshold”. If the module completes its programmed hold-off time and the power monitor signals from the meter are still de-asserted, the module will then write the time of last power fail to flash memory and send up to five power fail transmissions. The number of power fail transmissions depends on the transmitter operational mode and whether or not priority alarms are enabled.Radio EndpointThe alarm will auto resolve when the AC power is restored. If the power has been restored but the alarm persists then an on-site visit is required to investigate the status of the meter.
Power RestorePower FailPower Restore. AC Power is detected after a power fail.Upon power-on-reset (POR), the FlexNet module waits until the power monitor signal is asserted. Once the power monitor signal is asserted, the FlexNet module enters a hold-off time equal to the number of seconds stored as the “Restoral Time Threshold”. The Restoral Time Threshold is configurable in eight second increments and can be configured from 8 to 120 seconds. Once the hold-off time is complete, the device sends a number of power restore alarms and a read message per the Power Restore Transmissions Table.Radio EndpointNo user action required. This is a status indication only.
RAM FailureMetrology RAM FailureRAM Failure. The metrology RAM checksum test failed during bootup.Indicates a memory addressing error reported by the metrology processor. C1219 ST3MetrologyReplace meter.
Reverse EnergyReverse EnergyReverse energy. Reverse power flow has been detected.Each time the FlexNet module samples the voltage registers from the meter (90-sec), the reverse current flag will be checked. If the bit is set, a corresponding reverse energy bit will be set in the on-air FlexNet message. The FlexNet module’s reverse energy bit is cleared when the voltage average window resets.Radio EndpointInvestigate the reason for the alarm.
Single Phase OutageSingle Phase FailSingle phase outage.For a meter that has multiple phase voltages, the module has the ability to detect and report single phase outages. A single phase outage is defined as one of the power monitor signals from the meter reading less than 96 volts. The single phase outage detection is an edge sensitive. This means that the device must have been operating normal power prior to a single phase dropping out in order for the device to enter the single phase outage alarm messaging sequence. When a single phase outage event occurs the module will schedule three alarm messages to be sent with the single phase fail bit set. The power fail bit will not be set in these messages.MetrologyThe alarm will auto resolve when the AC power is restored to this phase. If the power has been restored but the alarm persists then an on-site visit is required to investigate the status of the meter.
TamperTamperTamper. The meter's orientation has been moved or the cover has been opened.Each time the FlexNet module detects a de-asserted power monitor signal, the electronic tamper algorithm starts. The electronic tamper detection monitors a hardware vibration sensor to determine if the meter has been removed from the socket. If the meter was removed from the socket, the FlexNet module will immediately send up to five power fail transmissions with the tamper bit set.Radio EndpointDoublecheck if there was a work order for this time. If not, on-site visit is required to investigate the status of the meter.
Table 2. Landis+Gyr DT-19 alerts
Meter event nameRNI event nameEvent descriptionEvent triggerEvent sourceXylem recommended action
Click CountN/AClick Count. The meter is currently undergoing transformer breaker operations.A click event occurs where the power is lost long enough to detect the loss (6-240 line cycles meter configuration setting) but not for continued loss of power that crosses the Outage Time threshold where meter would then go into last gasp. The click counter field increments each time a short duration voltage outage occurs (the outage is greater than the click count threshold setting but shorter than the Outage Time Threshold setting). The counter goes to 255 before resetting back to zero.Radio EndpointInvestigate possible source of momentary outages in field. Change the voltage source to reduce transformer breaker operations.
High Temperature / Hot SocketHigh Temperature DetectedHigh Temperature. The meter's internal temperature has exceeded the configured temperature threshold.The FlexNet microprocessor uses an embedded temperature sensor to measure the ambient temperature inside of the meter plastic enclosure. The temperature is sampled every 10 seconds. If the temperature read exceeds the High Temperature threshold, ten alarm messages with the high temperature alarm bit set are immediately transmitted.Radio EndpointOn-site visit is required to investigate the meter socket and service.
In-Time SyncTime AdjustedIn-Time Sync. The endpoint or device's time synchronizes with the tower.The endpoint or device's time is not synchronized with the tower.Radio EndpointNone
Low Battery ErrorMetrology Low BatteryLow Battery Error. The meter's battery has low voltage. This also occurs if the battery is missing.The meter's battery has low voltage.MetrologyIf meter has a battery, schedule field visit for battery replacement.
Measurement ErrorMetrology Measurement ErrorMeasurement error.A measurement error occurs when new DSP data is available, but the previous DSP data has not yet been processed; the older DSP data is thus lost. On the Focus AX, new DSP data is received every ~261ms or ~250ms, depending on the firmware version.MetrologySelf-correcting. Contact Sensus if the issue persists.
Meter Read FailureMeter Read FailureMeter Read Failure. The meter could not be read due to no response, bad CRC/Checksum/Parity, or invalid data.The meter could not be read due to no response, bad CRC/Checksum/Parity, or invalid data.Radio EndpointSelf-resolving. Replace the meter if the alarm continues repeatedly.
NONVOL ErrorMetrology Non Volatile Memory ErrorNONVOL Error. The meter cannot access the EEPROM.The metrology cannot access the nonvolatile ram. Meter will show Er 000 200 on the display. Metrology will set NONVOL_MEM_FAILURE_FLAG in STD TBL 3 in the meter.MetrologyReplace meter.
Power FailPower FailPower Fail. The meter does not have any AC power.The meter transmits 4 alarms unless power comes back during the transmission/dither period, or the meter does not have enough reserve capacitor charge to allow it (for example, there is a brief power restore not allowing sufficient charging time, followed by another power fail).Radio EndpointThe alarm will auto resolve when the AC power is restored. If the power has been restored but the alarm persists then an on-site visit is required to investigate the status of the meter.
Power RestorePower FailPower Restore. AC Power is detected after a power fail.Upon power-on-reset (POR), the FlexNet module waits until power monitor signal is asserted. Once the power monitor signal is asserted, the FlexNet module enters a hold-off time equal to the number of seconds stored as the “Restoral Time Threshold”. The Restoral Time Threshold is configurable in eight second increments and can be configured from 8 to 120 seconds. Once the hold-off time is complete, the device sends 5 dithered power restoral transmissions. Once all 5 power restoral transmissions have been sent, the device sends an on-air meter read message. The transmission mode for each transmission depends on the module configuration. Typically, power restore messages are transmitted on the priority channel.Radio EndpointNo user action required. This is a status indication only.
Processor ResetsN/AProcessor resets. The number of times the meter's processor has been reset.The processor resets field is a modulo-16 counter that increments each time the FlexNet microprocessor is reset. Seeing this field increase is not necessarily an indication of a problem since this field will increment each time the power fails for longer than the Outage Time Threshold. A high value in this field only indicates a potential problem when the unit has not also been reporting a high number of power failures.Radio EndpointMonitor for excessive resets.
RAM FailureMetrology RAM FailureRAM Failure. The metrology RAM checksum test failed during bootup.Indicates a memory addressing error reported by the metrology processor. C1219 ST3MetrologyReplace meter.
TamperTamperTamper.Each time the FlexNet module detects a de-asserted power monitor signal, the electronic tamper algorithm starts. The electronic tamper detection monitors a hardware vibration sensor to determine if the meter has been removed from the socket. If the meter was removed from the socket, the FlexNet module will immediately send up to five power fail transmissions with the tamper bit set.Radio EndpointDoublecheck if there was a work order for this time. If not, on-site visit is required to investigate the status of the meter.
TX Lock Errors/Synthesizer Lock FailuresN/ATX Lock Errors/Synthesizer Lock Failures. The number of times the transmitter could not lock to a frequency.The TX Lock errors field is a modulo-16 counter that increments each time the transmit synthesizer fails to lock. For a transmitter that is operating under normal operating temperatures, this field should never be non-zero.Radio EndpointThe alarm will be cleared automatically when a static setup message is sent.