Alarms and System Status - R
Bits are numbered from right to left, starting with Bit 0 on the far right. A bit value of 1 indicates an active alarm or status. Refer to the table below for system status descriptions.
Alarm - A: Critical Failure
The system classifies this alarm according to the “Failed” severity level as defined in the NAMUR NE107 standard.
This alarm is triggered under the following fault conditions:
Paddlewheel malfunction
Magnetic field interference
Internal chip or sensor error
When Alarm - A is active, the LCD backlight flashes red to indicate a critical system failure.
Alarm A Error Code Definition: Bits are defined from MSB (Bit 7) to LSB (Bit 0), with each bit representing the following:
7
NA
6
NA
5
NA
4
NA
3
NA
2
NA
1
Magnetic field interference
D02
Strong magnetic field detected near the device, interfering with AxleSense sensing.
0
Paddlewheel abnormality
D01
Paddle rotation cannot be detected. Verify the paddlewheel is rotating freely, the pipe is filled with liquid, and the paddlewheel assembly is undamaged.
D01 Paddle Ala default is Do not disturb (value = 2). In this mode, the alarm bit is recorded in the error code register but the LCD backlight will not change color. Set D01 to On (value = 1) to enable LCD alarm color indication.
Alarm - B: Out of Specification
This alarm indicates that the flow meter is operating outside of its designed specification range. The severity level is recommended to follow the “Out of Specification” category as defined in the NAMUR NE107 standard.
This alarm is typically used to signal:
Flow exceeding user-defined thresholds
Other notable operating conditions that require attention
The thresholds and logic can be configured under the D parameter category.
When Alarm - B is active, the LCD backlight turns solid red, indicating a non-critical but attention-required condition.
Alarm B Error Code Definition: Bits are defined from MSB (Bit 7) to LSB (Bit 0), with each bit representing the following:
7
NA
6
Totalized Flow Exceeds Target
D08
Totalized flow exceeds or falls below the preset target *Note
5
NA
4
NA
3
NA
2
NA
1
Instantaneous flow above upper limit
D04
Instantaneous flowrate exceeds the upper limit
0
Instantaneous flow below lower limit
D04
Instantaneous flowrate falls below the lower limit
* Note:
D04 FlowLIM Ala default setting is Off (value = 0). Set D04 to On (1) or Do not disturb (2) to enable flow limit alarm monitoring. Refer to the D Alarm & Info parameter section for full configuration details.
Alarm - C: Maintenance Required
This alarm indicates that the flow meter requires maintenance. The recommended severity level follows the “Maintenance Required” classification as defined in the NAMUR NE107 standard.
Therefore, all Alarm C bits are NA and this alarm will not be triggered on this model.
7
NA
6
NA
5
NA
4
NA
3
NA
2
NA
1
NA
0
NA
Alarm - D: Function Check
This alarm indicates that the device is currently in setup, simulation, or another manual operation and is not in real-time monitoring.The recommended severity level follows the “Function Check” category as defined in the NAMUR NE107 standard.
When this state is active, Bit 0 of the alarm register is set to 1, indicating the system is not in monitoring mode due to a user operation.
During this state, the LCD backlight will remain solid amber (orange) to indicate the flow meter is in a non-operational configuration mode.
ⓘ Alarm D does not appear as a row on the LCD alarm display screen. The amber backlight is the only on-screen indicator. This state is also readable via Modbus at register address 0x0011 (error code d), Bit 0.
7
NA
6
NA
5
NA
4
NA
3
NA
2
NA
1
NA
0
Main unit is not on the monitoring screen
NA
Main unit is in the settings menu, simulation mode, or another manual operation, and is not displaying the main monitoring screen.
System Status
The System Status is represented by an 8-bit status code (Bits 0–7), with each bit independently indicating a specific operating state of the device.
ⓘ The FP-AS310R has no NPN/OCT output function. Therefore, all System Status bits are NA and this register will always read 0x00 on this model.
7
NA
6
NA
5
NA
4
NA
3
NA
2
NA
1
NA
0
NA
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