This instruction manual version is v1.0

This document is applicable to the products below.

Method for confirming product version

You can find the hardware version on the sticker on the left side of the device.

Firmware version could be found on the bottom right of the boot screen indicated by a red arrow sign like shown below.

Definition of hardware version number

Hardware version number starts with a lowercase “V”, followed by 1 to 2 numbers “YY” which represents important modification of electronic parts and mechanisms that affects product’s core function. Following 1 or 2 numbers “XX” represents modification of non-core functions. The last 1 or 2 numbers “ZZ” represents modification which does not affect product function, such as minor mechanism feature modification or substitution of electronic components.

Definition of firmware version number

Firmware version number starts by lowercase “V”, followed by 1 to 2 numbers “YY” which represents important modifications of the firmware. Following 1 or 2 numbers “XX” represents modification of non-core functions. The last 1 or 2 numbers “ZZ” represents modification which does not affect product function.

Definition of manual version

Version number starts from lowercase “v”, following 2 numbers “XX” which is the version of manual.The last 1 or 2 numbers “ZZ” represents revised serial number of the version.

Due to modifications in mechanisms, electrical or firmware that could affect usage or installation methods, LORRIC will release new versions of the instruction manual. For example, if the definition of aviation plug changes then we release an updated manual. At the same time, for clients who own older models, the appropriate manual will still be available.

If modifications in the instruction manual don't affect the usage, but are just for improvements in grammar, sentence structure, etc. LORRIC will not release a new version.

We provide multi-language manuals

The manual provides multi-language versions. The same manual version in each language is for the same hardware and firmware version.

CAUTION

• Installation and safety compliance of the equipment system shall be the responsibility of the installer.

• Conductors terminated to the M12 connector shall be copper wire sized 22 AWG – 12 AWG

• The M12 connector coupling nut shall be tightened to 0.4 N·m – 0.6 N·m.

• Product labels shall be cleaned periodically with a dry, lint-free cloth only.

• Unused conductors shall be individually insulated with suitable insulating materials to prevent risk of electric shock, short circuit, or equipment damage.

If the password function is turned on, press Setup from the monitoring screen to modify the parameters, the following screen will appear first:

This product has passed the third-party IP66(Not UL certificated) test and obtained CE, FCC test.

Rohs application pending.

Update Date: 2024/09/02

Updates:

• New Additions:

  • Added a "Manual Update Log" page.

  • Added a "Product Update Record" page.

  • Added pages for category options and descriptions: Z.

  • Added pages for category options and descriptions: A.

  • Added pages for category options and descriptions: B.

  • Added pages for category options and descriptions: K.

  • Added pages for category options and descriptions: C.

  • Added pages for category options and descriptions: D.

  • Added pages for category options and descriptions: E.

  • Added pages for category options and descriptions: H.

  • Added a "Firmware P.1203 Update" page.

• Improvements:

  • Corrected links on the product page.

  • Updated the page title and content for the "Manual and Product Update and Version Record" section.

  • Updated parameter table descriptions.
• Fixes:

  • Updated the default password setting for H08.

Instantaneous flow volume and deviation

The maximum possible deviation for LORRIC’s flow meter is 0.5 % F.S. + 2.5 % O.R. which could be converted to the relation of maximum possible deviation and displayed data under different flow speed as seen below.

Flow speed

The data displayed on the screen is the flow speed in the T-connector. In most cases it will be a bit faster than the flow speed of the same ordinary pipe at the same flow volume.

Cumulative flow speed

The accumulated flow rate continuously counts until manually reset.

The maximum limit for the accumulated flow rate is 999,999,999 Liters, and it will reset to zero once exceeded.

Measurement Principle

A number of global invention patent applications are pending.

The LORRIC clamp-on ultrasonic flowmeter uses the ultrasonic time difference to measure the flow, and uses the linear relationship between the ultrasonic transmission time difference between the upstream and downstream of the pipe and the flow rate to measure the flow. Due to the one-piece clamp-on structure, it can be installed without interventions in the pipe, compared with the in-line flowmeter, it can also provide the highest chemical resistance and leak-proof performance. Compared with the traditional ultrasonic flowmeter, since there is no need to adjust the position of the upstream and downstream probes, it can be installed quickly, and also greatly reduces the training required for installers.

Important notice before installing

• Check if the version of your hardware and firmware device is consistent with the version of the instruction manual you will follow. To check the version of the manual, please go to .

Firmware Version: P1203 Release Date: August 2024

Improvements:

• Improvement I:

  • Added the Hybrid1 main screen.

Press the bottom-right button for entering the set-up page as below.

You can switch parameter classification by the middle 2 buttons. For more details of parameter classification and definitions, please see .

Enter the sub menu, then select the expected parameter. Accordingly, find below image for display reference.

The Z category lists the most frequently used functions from other categories in sequence, allowing users to adjust the device more conveniently.

Z02 Auto Pipe Spec – Automatic Pipe Specification Detection

This function automatically detects the pipeline specifications and, upon completion, switches to A02 to display the results. It is identical to A01. Utilising patented technology, the system senses the pipe dimensions and selects the closest matching specification. If the pipeline size has deformed or is not found in the database, a default pipeline specification will be used.

Specs

Please see the page of .

Cable wiring

Hybrid Page Application Monitoring

Application Scenario the Hybrid Page provides real-time monitoring of two key metrics—instantaneous flow rate and cumulative flow rate—allowing users to make prompt adjustments based on current conditions. This dual-data display is designed to optimize operational decision-making and efficiency.

Hybrid Page Setup Guide

Follow these steps to configure the Hybrid Page:

1. Open the Settings Menu:

   • Navigate to the Settings screen and select Option H.

   • Press the button to enter the settings submenu H09: Boot Screen Settings.

2. Select the Hybrid Page Option

HybHybrid Page Function Page Display

Specs

Please see the page of the monitoring screen.

Cable wiring

Please see the page of .

Parameter setup

Please refer to the .

Set-up steps as below:

1. Please set up the first.

2. Connect cable first according to the cable wiring instructions on this page.

3. Set up parameter E01 for selecting NC(Normal Close) or NO(Normal Open) when there is no signal.

4. Set up parameter E02 for specifying output signal content.

Pulse output

The user uses parameter E13 to select a volume first, and the device outputs a digital square wave every time it accumulates through a specified volume.

Main Functions and Steps

1. System Startup: On the main screen, open the system menu and navigate to the "(Z Quick Menu)" interface.
2. Settings Page: In the "(Z Quick Menu)" options interface, locate and select the "(Z02 Automatic Pipe Size Detection)" menu, then press enter.
3. Initiate Detection: Click the “Start Detection” button. The system will automatically begin the pipe size detection process.

4. Viewing Results: Once detection is complete, the screen will display detailed results. You can then return to the main screen.

Example Explanation

• Example Installation: For a pipe size CNS W15 PVCU, the system will display normal detection results if installed correctly.

  • (Left Image): If a matching pipe size is found, the screen will display the pipe size name.

  • (Right Image): If no matching pipe size is found, the system will default to a CNS W size specification.

Common Reasons for Unsuccessful Z02 Detection

• The pipe size is not in the built-in options. Refer to the A02 list for different model pipe sizes. See the pipe size guide for further details.

• Improper installation: Excessive or insufficient torque can cause inaccurate detection results.

• Pipe deformation due to material, pressure, wall thickness, or temperature may lead to inconsistent detection results.

Important Notes

• Ensure the pipe is properly installed to prevent detection errors.

• Regularly calibrate the system to maintain detection accuracy.

F01 Sim. Rate (Simulation Rate) - Simulated Flow

Defines the instantaneous flow rate to simulate. The unit applied will follow the settings defined in the B classification parameters.

F02 Sim. Mode (Simulation Mode)

Activating this option enables the simulation function, which is disabled by default. When enabled, the OCT outputs (excluding pulse), RS485 communication, and analogue current output will operate based on the simulated data and changes in the totalised flow.

• Please note that the totalised flow and historical data will be affected.

• The main screen will display an indication that the system is in simulation mode. Ensure the relevant communication functions are enabled for proper operation.

  Options

  RS-485 Numbers

  Remarks

After selecting a command, confirm whether to Save or Not Save.

Recommended flow of parameter setup

1. After the mechanism is installed, execute Z03 to automatically initialize the flowmeter parameters, and the machine can work normally.

Basic tuning

1. If there is still large flow data with the fluid stationary, execute a Z04 Zero Offset correction with water in the pipe and the fluid stationary.

2. If there is a reference value for the flow rate, you can use the Z05 Scale Factor to multiply the flow rate data by a certain ratio to correct it to the correct value.

Communications format

bit order: lsb first

byte order: big endian

Data bits:8

Parity: None

Stop bits: 1

Floating point number follows IEEE754-1985. The float32 below stands for 32bits Single precision floating point number.

Terminology

‌‌Register: Length of 2 Byte or 16bit which is unit length of memory in Modbus RTU.

‌Byte: 8 bit length

Definition and function of memory

Modbus memory is divided into two categories, read-only and read-write.

Read-only type is mainly for flow meter status related memory, such as instantaneous flow rate. This is also the most commonly used memory. Detail information in following page:

Read-write memory is mainly to set-up parameters such as pipe diameter, and to reset variables, such as set zero on the cumulative flow. Read-write memory is only readable by using instruction 03. You can only change one parameter at a time with the write operation. If the length of the target register is 1, please use instruction 06. If the length is 2 registers, please use instruction 30. Please see read-write memory detail page below:

Read-write memory instruction detail information as below:

Dosing refers to the industry-standard function of controlled volumetric addition. This process involves opening a control valve until the target flow volume is reached, at which point the valve closes. In certain applications, repeated dosing of the same volume is required. In industrial settings, this is commonly achieved using a PLC in conjunction with a control valve and a flow meter. If the control valve’s operating current is compatible (refer to the electrical specifications section of this manual), the dosing function of this flow meter can be used directly with the valve. This eliminates the need for additional PLC programming while still achieving precise volumetric dosing.

Dosing Operation Procedure

1. Enable the Dosing Function: Navigate to the C03 menu on the control panel and activate the dosing function to ensure the system is in standby mode.

2. Set the Target Dosing Volume: Enter the desired dosing volume in C04, which determines when the dosing process completes.

3. Configure the Reset Time Unit: In C05, specify the waiting time before resetting the accumulated total. The time unit is in seconds.

4. Set OCT to Dosing Mode: Switch the controller’s OCT mode to dosing, enabling it to drive the control valve accordingly.

5. Configure the Main Screen (H09): Set the main screen to batch dosing mode for easier operation and real-time monitoring of dosing parameters.

6. Start Dosing: Return to the main screen and initiate the dosing process. Once the accumulated flow reaches the target value, OCT status will change from open circuit to closed circuit. The main screen will start a countdown, displaying the remaining time in the center of the top row. While the countdown is active, if flow continues, the accumulated dosing value on the screen will keep updating.

7. End of Countdown: When the countdown finishes, the accumulated dosing value automatically resets to zero. Simultaneously, OCT status changes from closed circuit back to open circuit.

Important Notes

Due to valve switching delays and control signal transmission delays, there may be discrepancies between the measured total volume and the set target. Several factors can contribute to these deviations, including: "Smaller target dosing volumes", "Higher flow rates", "The distance between the valve", flow meter, and final container These factors may cause the actual dosed volume to differ from the target value. For precise dosing, select an appropriate pipe diameter and piping configuration. Additionally, it is recommended to test and adjust the calibration factor before actual operation. At the end of the countdown, the accumulated dosing value will automatically reset to zero, and the OCT status will switch from closed circuit back to open circuit.

Environment and Parameter Check

1. Confirm that the device power supply is normal.

2. Confirm whether the confirmation page data is consistent with the communication data.

3. Confirm that the OCT function is enabled and defined correctly (parameter ). If E02 uses pulse v2, please confirm the OCT Pulse troubleshooting process.

4. Confirm that the OCT preset state is on "NC" or off "NO" (parameter ).

5. Confirm that the relevant parameter settings of Alarm A, B, and C meet the requirements.

6. Confirm that the circuit wiring is correct, the external power supply connection and power supply are normal, the unused wiring is insulated, and there is no magnetic field interference in the surrounding area.

Hardware, Wiring, and Program of the Receiver Check

1. Enter the parameter to test the receiver. In the setting screen, if you set it open, it will not conduct, but if you set conduct, it will conduct.

2. Use the current gear of the three-purpose ammeter to connect between OCT+ and the positive pole of the power supply, and confirm whether there is current flowing when C0=1. Or use the voltage range to confirm whether there is a voltage difference close to the power supply voltage between OCT+ and OCT- when S0=1. If it is found that there is no correct output for the first time, please reconfirm the power supply circuit.

Results and Actions

1. The OCT output is normal, and the receiving end equipment and program are also normal. If the data is still abnormal, confirm other causes of the abnormality (pipe size, flow rate).

2. The main unit of this device unit may be damaged. If you have other units at hand, you can conduct a cross test to confirm that the receiving device, data processing program or line are all normal.

3. Record the serial number of the fuselage, the wiring diagram (all flowmeter-related wiring) and the model brand of the receiving end, and contact the original factory.

Environment and Parameter Check

1. Confirm if the power supply works fine.

2. Confirm whether the confirmation page data is consistent with the communication data.

3. Confirm that the OCT function is enabled and defined correctly (parameter ), if E02 uses pulse v2.

4. Confirm that the OCT preset state is on "NC" or off "NO" (parameter ).

5. Confirm that the circuit wiring is correct, the external power supply connection and power supply work fine, the unused wiring is insulated, and there is no magnetic field interference in the surrounding area.

Hardware, Wiring, and Program of the Receiver Check

1. Enter parameter , you can set the number of pulse output per second, please confirm at the receiving end whether you have received the corresponding data, especially whether the number is normal.

2. Please confirm that the parameter (Pulse width) is greater than or equal to the minimum pulse duration requirement of the receiving device.

3. Please confirm that the value and unit of E14 (Pulse unit) are the same as those required by the receiver program. For details, please refer to the description of the parameter table.

Results and Actions

1. The OCT output is normal, and the receiving end equipment and program are also normal. If the data is still abnormal, confirm other causes of the abnormality (pipe size, flow rate).

2. The main unit of this device may be damaged. If you have other units at hand, you can conduct a cross test to confirm that the receiving device, data processing program or line are all normal.

3. Record the serial number of the fuselage, the wiring diagram (all flowmeter-related wiring) and the model brand of the receiving end, and contact the original factory.

C01 Total Method

Defines the method for calculating the cumulative flow. Options include:

• Positive Flow

Environment and Parameter Check

1. Confirm that the device power supply is normal.

2. Confirm whether the confirmation page data is consistent with the communication data.

LCD screen displays 3 rows of information.

Functions of each button

Environment and Parameter Check

1. To confirm if the power supply works fine.

2. To confirm if the data on the LED screen is transferred to the system.

3. To confirm if the Iout function is still on. (Parameter

Extremely important precautions to take note before installing!!

If any of the scenarios below occur and cause damage to the flowmeter, the warranty is void.

• If the device material is PC then it is not highly resistant to PVC glue which is a strong gas and lubricant for PVC pipe. Therefore, before installing the flowmeter you must ensure that the glue is dry between the connecting pipe and adapter.

• Please pay special attention to the vertical flow of solvents and chemicals outside the pipeline since it may potentially cause damage to the flowmeter

• Do not use this device as a support point for pipelines or other objects, which will cause the flowmeter to withstand external forces which it is not designed for, thus , shortening the usage life of the product or damaging it.

• During the installation process, it’s crucial to tighten the union nuts only by hand until the flowmeter does not move and rotate. Do not use iron pliers or other tools to avoid damage to the flowmeter.

• The flowmeter is not permanently fixed to the outside of the pipeline, and can still move and rotate under excessive external force. Please do not use the flowmeter as a structure for personnel fixing, moving and safety protection.

• The electronic device of the flowmeter is not UV resistant. Therefore, we suggest covering it with a protector if installed outdoors.

• The seller will not be responsible for free maintenance for any defect or malfunction incurred by improper use and human errors.

• If the flowmeter is transported with its piping system to another site without protection then it could be damaged.

How to Choose an Installation Location

The 1st principle for choosing an installation location is wherein the pipe is filled completely with liquid to avoid issues caused by air bubbles or precipitation in the pipe. The 2nd principle is allowing the flow in the pipe to be fully developed by having enough length on both sides of the straight pipe. This means no equipment should be left on either side like adaptors, elbow pipe, valves or pumps.

The LCD display screen should not be exposed to direct sunlight that could cause visibility issues and a shorter life usage. Therefore, installing the flowmeter under direct sunlight should be avoided or with a sunlight protector is recommended.

Vertical pipe

Please choose the vertical pipe with a bottom-up flow direction.

Horizontal pipe

• Please choose the location with full liquid, like the lower part of the inclined pipe.

• LORRIC’s EchoSense flow meter should not be installed at the top right or bottom side of the pipe in order to avoid the interruption of air bubbles or precipitation.

Please be cautious of the air bubble in the pipe to avoid measurement error.

If the installation location for the flowmeter is close to a tank where pressure is low. We recommend installing a valve at the pipe exit to avoid generating any air bubbles.

New Product Installation Process

1. Make sure that the buckle is in the released position.

2. After the device faces the intended operation direction, pre-lock the device and the buckle on both sides of the pipeline with screws. At this time, if it is a large pipe in the applicable pipeline, the device may not move. If it is a small pipe in the applicable pipeline and the device is still in a movable state, please lock the flowmeter.

3. Tighten the two knobs on the fastener by hand, as long as the device does not rotate and move.

How to rotate the display screen direction

1. Please turn off the device and unplug it before disassembling.

2. Take off the four hex socket head cap screws on the top housing according to the above image.

3. Separate the top and bottom housing.

The RS-485 integer correspondence table is explained as follows.

K02 Calibration Mode

Troubleshooting

The monitoring screen is composed of 2 sections. The first 7 pages are real-time data monitoring. The last 15 pages are the current date, time and historical cumulative volume for the past 14 days. All the pages can be viewed cyclically by pressing the middle 2 direction buttons. Each definition on these 22 pages could be found below.

Monitoring screen detail

Monitoring Page No.1~No.3

Monitoring Page No.4~No.6

State 1 screen description

Monitoring screen No. 4 is mainly for checking the status of the device, if upper and lower limit alarm functions work as expected, or for troubleshooting there will be a red light. Please see “” for a detailed definition.

Description of Alarm A

Description of Alarm B

Description of Alarm C

Description of system status

Description of State 2

B01 Vol. Unit (Volume Unit)

The unit for instantaneous flow volume, default is L.

• Metric units: L (litres), m³ (cubic metres)

• Imperial units: U.gal (US Gallon), I.gal (Imperial Gallon), ft³ (cubic feet)

After selecting the command, please confirm whether to Save or Not Save.

B02 Time Unit

The time unit for flow rate, available options: seconds, minutes, hours, days.

• Default: minutes

After selecting the command, please confirm whether to Save or Not Save.

B03 Total Unit (Total Volume Unit)

The unit for cumulative and historical volume measurements, default is L.

• Metric units: L (litres), m³ (cubic metres)

• Imperial units: U.gal (US Gallon), I.gal (Imperial Gallon), ft³ (cubic feet)

After selecting the command, please confirm whether to Save or Not Save.

B04 Velocity Unit

The unit for flow velocity and sound velocity, default is m/s.

• Metric unit: m/s (metres per second)

• Imperial unit: ft/s (feet per second)

After selecting the command, please confirm whether to Save or Not Save.

B05 Dec. Place (Decimal Place)

Specifies the number of decimal places displayed on the LCD/LED screen. Data is truncated without rounding.

• Maximum of 4 decimal places, default is 4.

• This parameter affects display only, not calculations; cumulative flow uses original data.

After selecting the command, please confirm whether to Save or Not Save.

B06 Pipe Geo. Unit (Pipe Geometry Unit)

The unit for pipe dimensions, synchronised with A03.

After selecting the command, please confirm whether to Save or Not Save.

Specs

Please see the page of the monitoring screen.

Cable wiring

Please see the page of .

Parameter setup

Please refer to the .

Set-up steps as below:

1. Please set up the first.

2. Connect cable according to the cable wiring instructions on this page.

3. This machine uses Modbus RTU protocol, communication parameter set-up as below:

Advanced parameter setting (available since FW 2.3.0)

E15 Byte format

This setting provides 4 options.

ST stands for start bit, D0 ~ D7 are data bits, SP stands for stop bit.

OP and EP stands for Odd-parity and Even-parity respectively

E16 Bit order

This option controls the direction of the transfer and selects LSB or MSB first.

LSB first is typically used for Modbus RTU.

The figure below presents the difference with N-8-1 mode.

E17 Endianness

This setting controls the byte order of multi-byte data. This setting solely interacts with the byte order of replied data. The byte format of register address and length in the commands still conform to the examples provided by manual. The figure below presents the byte order for when converting number 1000 in IEEE-754 format.

Example

The command below requests instantaneous flow speed (abbreviated to FS) and totalized flow rate ( abbreviated to TF) from the device.

The first line is the command sent by the master device. It is not affected by the current settings. Please refer to Modbus 04 command for details.

The second line is the response from the flow meter in Big Endian format. From left to right, 0x01 to 0x08 and CRC1 to CRC2 are not affected by the current settings. The order of the instantaneous flow rate (indicated as FS+number) and the accumulated flow rate (indicated as TF+number) in the response is also unaffected. Because it is set as Big Endian, the four bytes of the instantaneous flow rate (represented by FS3 to FS0) will be returned starting from FS3. The four bytes of the cumulative flow (represented by TF3 to TF0) will be returned starting from TF3.

The third line is the response from the flow meter in Little Endian format. From left to right, 0x01 to 0x08 and CRC1 to CRC2 are not affected by the current settings. The order of the instantaneous flow rate (indicated as FS+number) and the accumulated flow rate (indicated as TF+number) in the response is also unaffected. Because it is set as Little Endian, the four bytes of the instantaneous flow rate (represented by FS0 to FS3) will be returned starting from FS0. The four bytes of the cumulative flow (represented by TF0 to TF3) will be returned starting from TF0.

For large numbers, reading and writing in different formats (float32/int64) may result in a discrepancy of less than 1/10,000.

Example Command:

Format for issuing the read command (03) from the control terminal.

This example reads the pipe diameter data of A02 Preset Pipe Spec.

• Slave Address: 01 (Address of the flow meter)

• Function Code: 03 (Read command)

• Starting Address of Data to Read: 00 00 (Starting address of the A02 Preset Pipe Spec data)

Flow Meter Response Format (03)

Example Explanation of Flow Meter Response

• Slave Address: 01 (Address of the flow meter)

• Function Code: 03 (Read command)

• Number of Bytes Returned: 06 (3 registers = 6 bytes)

Data Bytes:

• 00 06 (Current type option: ASTM SCH 80 PVC)

• 00 00 (Reading A02 RS485 init)

• 42 41 (Reading A02 RS485 init)

CRC: 59 E5 (Error-checking code calculated using the CRC algorithm)

Definition of M12 8-Pin connector

1. Connect the cable inside the box to the power supply and communication system. The unused color cables should be covered or protected to avoid electric leakage or short circuit.

2. Before removing the top housing of the device and wiring, the device should be powered off and the M12 8-pin cable should be removed.

3. Due to space constraints, the sticker on the side of the device and subsequent illustrations only use cable contact definitions.

4. Please see below images to know where each cable is connected.

Wiring diagram of DC power supply

Wiring diagram of 4-20mA analog output

This function will only work with power supplies through the brown and blue lines. The following diagram is not showing power supply wiring for readability.

OCT NPN Output Wiring Diagram

This function can only work when the brown and blue lines of the DC power supply are powered. Please note that the DC power supply diagram is omitted in this figure. For more details, see the DC power supply wiring diagram.

OCT PNP Output Wiring Diagram

This function can only work when the brown and blue lines of the DC power supply are powered. Please note that the DC power supply diagram is omitted in this figure. For more details, see the DC power supply wiring diagram.

RS485 Two-Wire Wiring Diagram

This function can only work when the brown and blue lines of the DC power supply are powered. Please note that the DC power supply diagram is omitted in this figure. For more details, see the DC power supply wiring diagram

Device Contact Definitions

1. Due to space constraints, the sticker on the side of the device only uses cable contact definitions.

2. The number of the device contact and the cable contact is mirrored and symmetrical.

3. Please see below device contact number:

For large numbers, writing and reading in different formats (float32/int64) may result in a discrepancy of less than 1/10,000. This command is limited to memory with a register length of 4. Please refer to the provided list.

Example Command:

Format for Issuing the Write Command (30) from the Control Terminal

Instruction example

Purpose and Use Cases: Certain Human-Machine Interfaces (HMIs) only support the 05 Write Command to send a signal to reset the accumulated total. Additionally, some HMIs require support for the 01 Read Command to verify that the sensor is functioning correctly.

01 Command Example

This command does not reset the C02.Del.Total (Clear Accumulated Total) option. It only provides the HMI with the ability to read Single Bit data using the 01/05 commands. If the command format is correct, the flow meter will respond to the master device with a Bit read acknowledgment.

Control Terminal TX (Transmit) Command Example for 01

Control Terminal TX (Transmit) Command Example for 01

• Slave Address: 01 (Address of the flow meter)

• Function Code: 01 (1-bit Read Command)

• Starting Address of Data to Read: 02 01 (Start address for C02.Del.Total Clear Accumulated Total)

Flow Meter RX (Receive) Response Example for 01

• Slave Address: 01 (Address of the flow meter)

• Function Code: 01 (Read Command)

• Response Bit: 01 00 (The flow meter is still online and operational, responding to the control terminal)

05 Command Example

This example activates the C02.Del.Total option to clear accumulated data, resetting the total to zero.

Control Terminal TX (Transmit) Command Example for 05

• Slave Address: 01 (Address of the flow meter)

• Function Code: 05 (Register Write Command)

• Starting Address of Data to Write: 02 01 (Start address for C02.Del.Total Clear Accumulated Total)

Flow Meter RX (Receive) Response Example for 05

• Slave Address: 01 (Address of the flow meter)

• Function Code: 05 (Register Write Command)

• Starting Address of Data to Write: 02 01 (Memory address for C02.Del.Total Clear Accumulated Total)

For large numbers, reading and writing in different formats (float32/int64) may result in a discrepancy of less than 1/10,000. This command is limited to memory with a register length of 4. Please refer to the provided list. .

Instruction example

Format for Issuing the Write Command (31) from the Control Terminal

H01 LED Bri. (LED Brightness)

Adjusts the brightness of the LED indicator. Three levels are available: High, Medium, and Low. The default setting is Medium.

D01 Board Communication Alarm

An alarm is triggered when a carrier communication module malfunction is detected. Default setting: Do Not Disturb Mode.

A03 Options A03 offers two different units for inputting pipe dimension data:

Alarm - A Major Abnormality

Suggestions of system abnormality are the same with Failed message level mentioned in NAMUR NE107 standard.

The Output Display when the flow sensing function is abnormal or the host is abnormal.

“Error” is displayed on the LED screen, and the LCD backlight blinking red light.

Alarm - A Following explains error message bits from higher bit (7th digit) to lower bit (0th digit):