Siemens SITRANS F Coriolis FCT030 Function Manual

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Page 1

SITRANS F

Coriolis Flowmeters FCT030 Modbus (From firmware

4.0)

Introduction

Function Manual

Communication

Commissioning

MODBUS commands

Definitions

06/2018

A5E39931813-AB

Page 2

Legal information Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken.

WARNING

indicates that death or severe personal injury may result if proper precautions are not taken.

CAUTION

indicates that minor personal injury can result if proper precautions are not taken.

NOTICE indicates that property damage can result if proper precautions are not taken.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property damage.

Qualified Personnel

The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following:

WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems. The permissible ambient conditions must be complied with. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions.

Siemens AG Division Process Industries and Drives Postfach 48 48 90026 NÜRNBERG GERMANY

Document order number: A5E39931813 Ⓟ 05/2018 Subject to change

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1 Introduction...................................................................................................................................................7

1.1 Purpose of this documentation.................................................................................................7

1.2 Document history.....................................................................................................................7

1.3 Product compatibility................................................................................................................8

2 Communication.............................................................................................................................................9

2.1 System integration...................................................................................................................9

2.2 System configuration................................................................................................................9

2.3 System wiring.........................................................................................................................12

2.4 Connecting.............................................................................................................................14

2.4.1 Connecting the Modbus (CH1)...............................................................................................14

3 Commissioning...........................................................................................................................................17

3.1 General requirements............................................................................................................17

3.2 Operating via SIMATIC PDM.................................................................................................17

3.3 Functions in SIMATIC PDM...................................................................................................17

3.4 Commissioning steps.............................................................................................................17

3.5 Initial Setup............................................................................................................................17

3.6 Adding a device to communication network...........................................................................20

3.7 Configuring a new device.......................................................................................................21

3.8 Wizard - Quick Start via PDM................................................................................................22

3.9 Wizard - Zero Point adjustment..............................................................................................29

3.10 Changing parameter settings using SIMATIC PDM...............................................................30

3.11 Parameters accessed via drop-down menus.........................................................................31

4 MODBUS commands.................................................................................................................................33

4.1 Modbus addressing model.....................................................................................................33

4.2 Modbus communication.........................................................................................................33

4.3 Coil configuration...................................................................................................................35

4.4 Modbus register mapping.......................................................................................................36

4.5 Integer byte order...................................................................................................................38

4.6 Float transmission..................................................................................................................38

4.7 Float byte order......................................................................................................................39

4.8 Modbus function codes..........................................................................................................39

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Table of contents

4.9 Access control........................................................................................................................40

4.10 Modbus holding registers tables............................................................................................41

4.10.1 Modbus holding registers tables (intro)..................................................................................41

4.10.2 Process values.......................................................................................................................42

4.10.3 Totalizers................................................................................................................................44

4.10.4 Units.......................................................................................................................................46

4.10.5 Setup......................................................................................................................................58

4.10.5.1 Sensor settings......................................................................................................................58

4.10.5.2 Density...................................................................................................................................59

4.10.5.3 Aerated flow...........................................................................................................................61

4.10.5.4 Zero point adjustment............................................................................................................62

4.10.5.5 Quality codes for process values...........................................................................................64

4.10.5.6 Process values.......................................................................................................................69

4.10.5.7 Totalizers................................................................................................................................74

4.10.5.8 Inputs and outputs..................................................................................................................80

4.10.5.9 Date and time.......................................................................................................................122

4.10.5.10 Local display........................................................................................................................123

4.10.5.11 Selectable values dependent on the view type....................................................................133

4.10.5.12 Process value filter masks...................................................................................................135

4.10.6 Maintenance and diagnostics...............................................................................................135

4.10.6.1 Identification.........................................................................................................................136

4.10.7 Diagnostic events.................................................................................................................139

4.10.7.1 Active events........................................................................................................................139

4.10.7.2 Diagnostic log.......................................................................................................................143

4.10.7.3 Alarm items..........................................................................................................................145

4.10.8 Diagnostics...........................................................................................................................152

4.10.8.1 Device diagnostics...............................................................................................................152

4.10.8.2 Temperature monitoring.......................................................................................................152

4.10.8.3 Dosing..................................................................................................................................153

4.10.8.4 Inputs and outputs................................................................................................................165

4.10.8.5 Peak values..........................................................................................................................170

4.10.9 Characteristics.....................................................................................................................174

4.10.9.1 Product.................................................................................................................................174

4.10.9.2 Transmitter...........................................................................................................................174

4.10.10 SensorFlash.........................................................................................................................175

4.10.10.1 SensorFlash.........................................................................................................................175

4.10.10.2 Data logging.........................................................................................................................176

4.10.11 Simulation............................................................................................................................177

4.10.11.1 Inputs and outputs................................................................................................................177

4.10.11.2 Process values.....................................................................................................................183

4.10.11.3 Alarms..................................................................................................................................184

4.10.12 Audit trail..............................................................................................................................186

4.10.12.1 Operating time......................................................................................................................186

4.10.12.2 Parameter change log..........................................................................................................186

4.10.12.3 FW update change log.........................................................................................................188

4.10.12.4 Device reset.........................................................................................................................188

4.10.13 Communication....................................................................................................................189

4.10.13.1 Service channel....................................................................................................................189

4.10.14 Security................................................................................................................................189

4.10.14.1 Access management............................................................................................................189

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Table of contents

A Definitions.................................................................................................................................................191

A.1 Definitions............................................................................................................................191

Index.........................................................................................................................................................195

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Table of contents

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Introduction

1.1 Purpose of this documentation

This manual contains all information needed to integrate the process instruments into a communications network. The manual is aimed at control system designers, system integrators, instrument engineers.

In order to operate safety and for more detailed information you need the product specific manual. Available for download from Flow documentation (http://www.siemens.com/

flowdocumentation).

This manual applies to the SITRANS FCT030 transmitter Modbus version only. The FCT030 transmitter can be used in combination with the following sensors:

Mass 2100

FC300

FCS400 and FSC300

In order to operate a Coriolis flow meter, you also need Operating Instructions. See Flow documentation (http://www.siemens.com/flowdocumentation)

1.2 Document history

The following table shows major changes in the documentation compared to the previous edition.

The most important changes in the documentation when compared with the respective previous edition are given in the following table.

Edition Note 06/2018 Second edition

06/2017 First edition

Use the device to measure process medium in accordance with the information in the Operating Instructions.

Note Use in a domestic environment

This Class A Group 1 equipment is intended for use in industrial areas.

In a domestic environment this device may cause radio interference.

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Introduction

1.3 Product compatibility

Edition Remarks Product compatibility Compatibility of device integration package 06/2017 First revision HW revision 03

Compact FW revision 4.xx.xx-xx Remote FW revision 4.xx.xx-xx

Service channel: SIMATIC V8.2 Service Pack 1 or later

Modbus: SIMATIC V8.2 Serv‐ ice Pack 1 or later

HART: SIMATIC V8.2 Serv‐ ice Pack 1 or later

HART: SITRANS DTM V4.1 5.00.xx-xx HART: AMS Device manager

V12 PROFIBUS: SIMATIC V8.2

Service Pack 1 or later PROFIBUS : SITRANS DTM

V4.1

5.00.xx-xx

1.00.xx-xx

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Communication

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2.1 System integration

This chapter provides information on how to integrate the device in a point-to-point or multidrop Modbus RTU network in non-hazardous or hazardous areas. Many details of network design are beyond the scope of these operating instructions. The points below provide an overview of the major design criteria. For further details contact Siemens.

2.2 System configuration

Non-hazardous areas

The following figures show examples of installations in point-to-point and multidrop configurations in non-hazardous areas.

Figure 2-1 Point to point configuration in non-hazardous locations

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Communication

2.2 System configuration

Figure 2-2 Multidrop configuration (branch) in non-hazardous area

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Communication

2.2 System configuration

Hazardous areas

Figure 2-3 Multidrop configuration (Daisy chain) in non-hazardous area

The following figures show examples of installations in point-to-point and multidrop configurations in hazardous areas.

Figure 2-4 Point-to-point configuration in hazardous area

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Communication

2.3 System wiring

Figure 2-5 Multidrop configuration in hazardous area

NOTICE

Flameproof conduit seals

Two flameproof conduit seals are required for each device in hazardous area installations.

NOTICE

Equipment approved for hazardous areas

Ensure that the equipment is approved for installation in hazardous areas.

2.3 System wiring

The device is slave in a 2-wire Modbus RTU RS 485 bus system. Terminal A on the device must be connected to terminal A on the master/host system. Terminal B on the device must be connected to terminal B on the master/host system. This corresponds to a half-duplex communication where the slave will only reply to a request from the master.

This example shows an EMC shielded enclosure for multidrop installation. Cable shield must be grounded at host system, in connection box, and at flowmeter to comply with EMC requirements. Keep the cable shield to the ground as short as possible.

FCT030 Modbus (From firmware 4.0)

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Communication

2.3 System wiring

Topology

The device supports a two-wire electrical interface in accordance with EIA/TIA-485 standard.

An RS485 Modbus configuration without repeater has one trunk cable, along which devices are connected, directly (daisy chaining) or by short branch cables.

Note

Multidrop examples in this document show a trunk cable with short branch cables.

Maximum cable lengths

The end to end length of the trunk cable must be limited. The maximum length depends on the baud rate, the cable (gauge, capacitance or characteristic impedance), the number and types of loads on the daisy chain, and the network configuration.

Note Maximum branch cable length

Branch cables must be short, never more than 20 m.

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Communication

2.4 Connecting

Figure 2-6 Maximum cable lengths in multidrop configuration

2.4 Connecting

Note End Of Line (EOL) termination

The FCT030 EOL termination DIP switch is default set to EOL active. To change termination setting see Setting the EOL termination DIP switches changed.

2.4.1 Connecting the Modbus (CH1)

1. Remove cap and ferrule from cable gland and slide onto cable.

2. Push cable through open gland and cable path.

3. Restore ferrule and tighten cap to lightly hold cable in place.

4. Signal cable screen is folded back over outer sheath and grounded beneath cable clamp.

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5. Connect wires to terminals using wiring tool, field mount transmitter

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Communication

2.4 Connecting

6. Connect wires to terminals using wiring tool, wall mount transmitter.

Modbus

④ In + (B) ⑤ In - (A) ⑥ Out + (B) ⑦ Out - (A)

7. Tighten cable gland.

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Communication

2.4 Connecting

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Commissioning

3.1 General requirements

Before commissioning it must be checked that:

● The device has been installed and connected in accordance with the guidelines provided in the Operating Instruction for FCT030 transmitter

3.2 Operating via SIMATIC PDM

SIMATIC PDM is a software package used to commission and maintain process devices.

3.3 Functions in SIMATIC PDM

SIMATIC PDM monitors the process values, alarms and status signals of the device. It allows you to display, compare, adjust, verify, and simulate process device data; also to set schedules for calibration and maintenance.

3.4 Commissioning steps

In the following it is described how to commission the device with SIMATIC PDM.

The steps are divided into the following sections:

1. Initial Setup (Page 17)

2. Adding a device to communication network (Page 20)

3. Wizard - Quick Start via PDM (Page 22)

4. Wizard - Zero Point adjustment (Page 29)

5. Configuring a new device (Page 21)

6. I/O configuration

7. Summary

3.5 Initial Setup

To ensure that SIMATIC PDM connects properly, please complete the two processes outlined below:

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Commissioning

3.5 Initial Setup

1. Deactivating buffers

2. Updating the Electronic Device Description (EDD)

Deactivating buffers for RS 485 COM port This deactivation is required to align SIMATIC PDM for Windows® operating systems.

Note

Support for Windows operating systems can be found here: support.automation.siemens.com (http://support.automation.siemens.com)

1. Click Start → Control Panel to begin configuration.

2. Click on Hardware and Sound and then on Device Manager.

3. Open Ports folder and double-click the COM Port used by the system to open the Communications Port Properties window.

4. Select the Port Settings tab and click the Advanced button.

5. If the Use FIFO buffers check box is deselected, click to select.

6. Set Receiver Buffer and Transmitter Buffer to Low (1).

Figure 3-1 COM Port Setting

For serial adapters it can be required to change the Latency Timer (msec) to 1.

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Commissioning

3.5 Initial Setup

3.6 Adding a device to communication network

Before setting the parameters, it is necessary to configure the transmitter project in PDM.

1. Add the device to SIMATIC Modbus network:

– Select File → New

Type in a project name, for example

– Go to View and select Process Device Network view.

FC commissioning

– Right-click on the typed in

– Right-click on Networks and Insert New Object → Communication Network.

– Click on Assign Device Type and select Modbus Network.

Click OK two times. Your PC is now added to the Modbus Network.

– Right-click Modbus Network and select Insert New Object → Object.

– Click on Assign Device Type, and select Devices → Modbus → Sensors → Flow → Coriolis

→ SIEMENS AG → SITRANS FC Click OK two times.

Project name

and select Insert New Object → Networks.

Figure 3-2 Assigning Modbus device to network

2. Set up the communication parameters for SIMATIC Modbus network:

– Select Networks → My computer, right-click on COM Port Interface and select Object

Properties.

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Commissioning

3.7 Configuring a new device

– Select the Communication tab and configure the communication parameters. The

transmitters default settings are:

- Transmission rate: 19200 baud

- Parity: even

Figure 3-3 Modbus net object properties

– Click OK.

3. Set up the COM interface:

– Select Modbus Networks.

– Right-click on the object name SITRANS FC and select Object Properties.

– Select the Communication tab and configure the Modbus address.

Figure 3-4 Set the Modbus address

– Click OK.

3.7 Configuring a new device

Note

Clicking on Cancel during an upload from device to SIMATIC PDM will result in some parameters NOT being updated.

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Commissioning

3.8 Wizard - Quick Start via PDM

1. Check that you have the most recent EDD, and if necessary update it, see Updating the Electronic Device Description (EDD) in Initial Setup (Page 17).

2. Launch SIMATIC Manager.

3. Right-click on SITRANS FC and select Open Object to open SIMATIC PDM.

4. Click on Device and select Upload to PG/PC Wizard... to configure the device.

3.8 Wizard - Quick Start via PDM

The graphic Quick Start Wizard provides an easy 5-step procedure that configures the device for a simple application.

Please consult the SIMATIC PDM operating instructions or online help for details on using SIMATIC PDM.

Access level control

The parameters are protected against changes by access level control. To gain access, select Access Management from the device menu, select User and enter the PIN code.

Quick start

The default user PIN code is 2457.

Note

- The Quick Start wizard settings are inter-related and changes apply only after you click on

Apply and Transfer at the end of step 5 to save settings offline and transfer them to the device.

- Do not use the Quick Start Wizard to modify individual parameters.

- Click on Back to return and revise settings or Cancel to exit the Quick Start.

Launch SIMATIC PDM, open the menu Device → Wizard - Quick Start..., and follow steps 1 to 5.

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Commissioning

3.8 Wizard - Quick Start via PDM

Step 1 - Identification

Note

The layout of the dialog boxes shown may vary according to the resolution setting for your computer monitor. The recommended resolution is 1280 x 960.

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Commissioning

3.8 Wizard - Quick Start via PDM

1. Click on Read Data from Device to upload Quick Start parameter settings from the device to the PC/PG and ensure PDM is synchronized with the device.

2. Click on Next to accept the default values. (Descriptor, Message, and Date fields can be left blank.)

Figure 3-5 Quick start step 1

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Step 2 - Sensor orientation

Step 2 shows an overview of the various recommended installation orientations depending on the application.

Commissioning

3.8 Wizard - Quick Start via PDM

Figure 3-6 Quick start step 2

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Commissioning

3.8 Wizard - Quick Start via PDM

Step 3 - Sensor connection

The transmitter can be ordered with M12 connection or with terminated cable (for example conduit connections).

Figure 3-7 Quick start step 3

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Step 4 - Measurement conditions

Configure the measurement conditions for the selected process variables. Change Flow Direction if necessary.

Commissioning

3.8 Wizard - Quick Start via PDM

Figure 3-8 Quick start step 4

Reduce the sensitivity of the flow measurement signal by clicking on the Pulsating Flow button and selecting the appropriate filter.

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Commissioning

3.8 Wizard - Quick Start via PDM

Step 5 - Summary

Figure 3-9 Filter setting selection

Check parameter settings, and click on Back to return and revise values, Apply to save settings offline, or Apply and Transfer to save settings offline and transfer them to the device.

Figure 3-10 Quick start step 5

The message Quick Start was successful will appear. Click on OK.

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3.9 Wizard - Zero Point adjustment

Open the menu Device → Wizard → Zero Point Adjustment.

Select Auto. Click on Next.

Commissioning

3.9 Wizard - Zero Point adjustment

It is recommended to use the default settings. Change the Zero Point Adjustments Settings, if necessary.

Click on Auto Zero Point Adjustment.

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Commissioning

3.10 Changing parameter settings using SIMATIC PDM

Note

Clicking on Cancel during an upload from device to SIMATIC PDM will result in some parameters NOT being updated.

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Commissioning

3.11 Parameters accessed via drop-down menus

Many parameters are accessed via the online menus in SIMATIC PDM, see Parameters accessed via drop-down menus for the others.

1. Launch SIMATIC PDM, connect to the appropriate device and upload data.

2. Adjust parameter values in the parameter value field then click on Enter. The status fields

read Changed.

3. Open the Device menu, click on Download to device, then use File → Save to save settings

offline. The status fields are cleared.

3.11 Parameters accessed via drop-down menus

Click on Device or View to open the associated drop-down menus.

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Commissioning

3.11 Parameters accessed via drop-down menus

Drop-down menus

Table 3-1 Device menus

Device menus Description Download to Device Downloads all writable parameters to the device

Upload to PC/PG Uploads all parameters from the device to the parameter

Assign address and TAG Assign communication address and TAG name Value comparison Compare values between device / project Object properties Properties for device and project Calibration log Create calibration logs for field devices. Change log The change log records which actions have been per‐

Set the device checked The device can be set to checked / or unchecked Check configuration Check configuration if it contains errors Wizard - Quick Start Guide for a quick commissioning Wizard - Zero Point Adjustment Guide for zero point adjustment (automatic and manual)

table

formed with SIMATIC PDM on devices

Table 3-2 View menus

View menus Description Process Variables (online dialog) Shows all process values

Device Diagnostic (online dialog) Shows all diagnostics information (alarms and diagnostics

parameters) Toolbar (online dialog) Shows/hides the toolbar Status Bar Shows/hides the status bar Update Updates the content of the active window

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MODBUS commands

4.1 Modbus addressing model

The device allows read/write access to one holding register block. All devices are mapped to this Modbus address space.

4.2 Modbus communication

Table 4-1 General Modbus settings

Modbus register

8291 Unsigned / 2Restart com‐

8005 Unsigned / 2Slave address

8297 Unsigned / 2Slave address

Data type / Size in bytes

Parameter Description Default val‐

munication

(HW)

(SW)

Restarts the communication using configured slave address, baud rate and parity/framing.

DIP switch setting on the transmitter cassette. Address is used if DIP switch is set to a value > 0.

Software address of Modbus inter‐ face. Address is used if switch is set to 0.

Value range / ue [units] (units register)

- - Read only

1 1 - 147 Read /

Setting options

● 0: Cancel

● 1: Restart

Access level

Write only

write

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MODBUS commands

4.2 Modbus communication

Modbus register

8298 Unsigned / 2Baud rate Baud rate of Modbus interface. 19200 Bit/s

8299 Unsigned / 2Parity and

Data type / Size in bytes

Parameter Description Default val‐

ue [units] (units register)

framing

Parity and framing of the Modbus communication interface.

Even pari‐ ty, 1 stop

Value range / Setting options

● 0: 9600 Bit/s

● 1: 19200 Bit/ s

● 2: 115200 Bit/s

● 3: Reserved

● 4: 38400 Bit/ s

● 5: 57600 Bit/ s

● 6: 76800 Bit/ s

● 7: 1200 Bit/s

● 8: 2400 Bit/s

● 9: 4800 Bit/s

● 0: Even parity, 1 stop

● 1: Odd parity, 1 stop

● 2: No parity, 2 stops

Access level

Read / write

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4.3 Coil configuration

The device provides 20 coil definitions which can be configured.

Table 4-2 Coil configuration

MODBUS commands

4.3 Coil configuration

Modbus register

10300 Unsigned / 2 Modbus coil ad‐

10301 Unsigned / 2 Modbus coil

10302 Unsigned / 4 Modbus coil bit‐

10304 Unsigned / 2 Modbus coil

10305 Unsigned / 2 Modbus coil ad‐

10306 Unsigned / 2 Modbus coil

Data type / Size in bytes

Parameter Description Default value

dress 1

mask 1

length 1

dress 2

Specifies the coil address with which the following bit coded register value is accessible. The register and bit(s) are specified by Modbus coil reg‐ ister 1and Modbus coil bit‐ mask 1

Specifies the Modbus register whose value is checked against Modbus coil bitmask 1 to determine the coil value (false or true). A register value of 65535 specifies that this coil mapping is undefined.

Bit mask which is compared against the register value specified with Modbus coil reg‐ ister 1 to determine the coil value. If any bit of the register value is set which is also set in the bit mask then the coil value is true, otherwise the coil is false.

Output parameter that informs about the size in bytes of the parameter that is specified by Modbus coil address 1. Could be used to identify the relevant bits of the Modbus coil bit‐ mask 1

Specifies the coil address with which the following bit coded register value is accessible. The register and bit(s) are specified by Modbus coil reg‐ ister 2 and Modbus coil bit‐ mask 2

Specifies the Modbus register whose value is checked against Modbus coil bitmask 2 to determine the coil value (false or true). A register value of 65535 specifies that this coil mapping is undefined.

[units] (units register)

1 0 - 65535 Read / write

Undefined 0 - 65535 Read / write

0 0 - 4294967295 Read / write

- Read only

2 0 - 65535 Read / write

Undefined Read / write

Value range / Setting options

Access lev‐ el

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MODBUS commands

4.4 Modbus register mapping

Modbus register

10307 Unsigned / 4 Modbus coil bit‐

10309 Unsigned / 2 Modbus coil

... 10399 Unsigned / 2 Modbus coil

Data type / Size in bytes

If default value is "-" the command "Set to default" will not set this parameter to default.

Parameter Description Default value

mask 2

length 2

length 20

Bit mask which is compared against the register value specified with Modbus coil reg‐ ister 2 to determine the coil value. If any bit of the register value is set which is also set in the bit mask then the coil value is true otherwise false.

Output parameter that informs about size in bytes of parame‐ ter that is specified by Modbus coil address 2. Could be used to identify the relevant bits of the Modbus coil bitmask 2

Output parameter that informs about the size in bytes of the parameter that is specified by Modbus coil address 20. Could be used to identify the relevant bits of the Modbus coil bitmask 20

[units] (units register)

0 0 - 4294967295 Read / write

- Read only

Value range / Setting options

Access lev‐ el

4.4 Modbus register mapping

The device provides the possibility to map each existing parameter to a freely chosen Modbus register for communication purposes over channel 1.

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The device provides means to remap 20 Modbus registers.

Table 4-3 Modbus register mapping

MODBUS commands

4.4 Modbus register mapping

Modbus register

10448 Unsigned / 4Enable mapping Activation/deactivation of

10450 Unsigned / 2Register 1 source Modbus register that ap‐

10451 Unsigned / 2Register 1 target Register of an existing prod‐

... 10488 Unsigned / 2Register 20 source Modbus register that ap‐

10489 Unsigned / 2Register 20 target Register of an existing prod‐

Data type / Size in bytes

Parameter Description Default value

the register mapping. A set bit means that the mapping pair is activated, a cleared bit that the mapping pair is de‐ activated.

Bit 0: Requested register 1 / Tar‐ get register 1

… Bit 19:

Requested register 20 / Tar‐ get register 20

pears within Modbus re‐ quest is redirected to the pa‐ rameter specified by Target register 1

uct parameter to which a Modbus request is redirected

pears within Modbus re‐ quest is redirected to the pa‐ rameter specified by Target register 20

uct parameter to which a Modbus request is redirected

Value range / [units] (units register)

0 0 - 1048575 Read /

65535 0 - 65535 Read /

Setting op‐

tions

Access level

write

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MODBUS commands

4.6 Float transmission

4.5 Integer byte order

The device is able to adjust the byte order of integer values.

Table 4-4 Integer byte order

Modbus register

8295 Unsigned / 2Integer order byte The integer byte order used

Data type / Size in bytes

Parameter Description Default value

in Modbus messages. 0: MSB - LSB (big endian) 1: LSB - MSB (little endian) MSB = most significant byte /

high byte LSB = least significant byte /

low byte

4.6 Float transmission

The Float Byte Order function ensures that the master and slave use the same sequence of the bytes when transmitting float values. This enables the user to configure the FCT030 and operate the device with all types of PLCs without reprogramming the PLC. The transmission order is configured by setting the parameter Byte Order in the submenu Device → Communication.

Note

The command Restart Communication must be executed to activate the new byte order setting.

[units] (units register)

MSB - LSB (big endian)

Value range / Setting op‐ tions

0 - 1 Read /

Access level

write

The table in chapter Float byte order (Page 39) shows the different options for setting the transmission method.

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4.7 Float byte order

The device is able to adjust the byte order of floating-point values.

Table 4-5 Float byte order

MODBUS commands

4.8 Modbus function codes

Modbus register

8296 Unsigned / 2Float byte order The float byte order used in

Data type / Size in bytes

Parameter Description Default value

[units] (units register)

3-2-1-0 0 - 3 Read /

Modbus messages. 0: 1-0-3-2

1: 0-1-2-3 2: 2-3-0-1 3: 3-2-1-0

The first mentioned byte is the first byte sent.

Byte 3 corresponds to the left-most byte (MSB) of a 32 bit floating point number in big endian format, byte 0 to the right-most byte

Value range /

Setting op‐

tions

Access level

write

4.8 Modbus function codes

Table 4-6 General Modbus settings

Function code Command text Description 01 Read Coils Reads the status of single bit(s)

02 Read Discrete Inputs Reads the status of single input bit(s) 03 Read Holding Registers Reads the binary content of multiple 16-bit registers 04 Read Input Registers Reads the binary content of multiple 16-bit registers 05 Write Single Coil Writes a single on/off bit 06 Write Single Register Writes the binary content of single 16-bit register 07 Read Exception Status Delivers the global alarm status of the device 08 Diagnostics Provides a series of tests for checking the communication sys‐

tem 15 Write Multiple Coils Writes multiple on/off bits 16 Write Multiple Registers Writes the binary content of multiple 16-bit registers 17 Report Slave ID The device will respond to a Report Slave ID command (com‐

mand 17) request from the master by giving information about

device type, vendor, and revision level 23 Read/Write Multiple Registers Combined Write Multiple Registers / Read Holding Registers call

Function code 7 (Read exception status) The device provides the content of the parameter Global alarm status as exceptions.

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MODBUS commands

4.9 Access control

Function code 8 (Diagnostics) The diagnostics function provides means for checking the communication between MODBUS

master and slave. The function uses a sub-function code to select the functionality.

The following sub-function codes are supported:

Sub-function code Name Description 0 Return query data The data passed in the request data field will be returned (loo‐

ped back) in the response. The entire response message should be identical to the request.

1 Restart communications option After having restarted the communication, select the baudrate,

framing or Modbus address to get access to the device again.

Function code 17 (Report Slave ID) The transmitter will respond to a Report Slave ID request from the master by giving information

about device type, vendor, and firmware version in a format as shown:

Response

Slave address 1 byte Function code 1 byte 17 Byte count 1 byte 62 Slave ID 1 byte Sensor device type

0: SITRANS FC Run indicator 1 byte 255: Running Manufacturer name 12 bytes SIEMENS Product name 32 bytes SITRANS F Product firmware

version CRC 2 bytes

16 bytes -

4.9 Access control

Access control manages whether the Modbus master is allowed to modify device parameters. Reading of parameters is always possible. The general access control rules are:

● The Modbus interface has an access level that can be changed by providing PIN information via the Modbus register 8292 (User PIN) or 8293 (Expert PIN).

● Each parameter has a protection level assigned that specifies the required access level to modify the parameter via the Modbus interface.

● If the access level of the Modbus interface is lower than the protection level of the parameter that is desired to be modified, then the attempt to modify the parameter is rejected by the device.

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MODBUS commands

4.10 Modbus holding registers tables

If the device is defined as a custody transfer (CT) device and the CT write protection DIP switch is ON (locked), the device will deny all writes to CT parameters independent of the access control.

Table 4-7 Access control

Access level Description Read only The Modbus master is not able to modify the device configuration (setup parameters).

The Modbus master is only able to execute the command, to reset PINs. This is the default level of the Modbus interface.

User The Modbus master has to provide the correct user PIN with Modbus register 8292 to reach this access

level. The Modbus master is able to modify a subset of the device configuration.

Expert The Modbus master has to provide the correct expert PIN with Modbus register 8293 to reach this

access level. The Modbus master is able to modify the configuration of the device.

If an incorrect user PIN or an incorrect expert PIN is entered, or if the device does not receive any request within 10 minutes, the device resets the access level to read only.

4.10 Modbus holding registers tables

4.10.1 Modbus holding registers tables (intro)

In the following the Modbus RTU holding registers available for SITRANS FST030 are described.

Note

All Write parameters require password access.

Note

In case of error message "Check if the device is set to CT or SIL Operation mode", please check for the following root causes:

- The device is set to CT mode

- The device is set to SIL mode

- The used Modbus register address is wrong

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MODBUS commands

4.10 Modbus holding registers tables

4.10.2 Process values

Table 4-8 Process values for standard FC applications

Modbus register

3000 Float / 4 Mass flow Measured mass flow [kg/s]

3002 Float / 4 Volume flow Measured volume flow [m³/s]

3004 Float / 4 Density Measured density [kg/s]

3010 Float / 4 Medium temper‐

3023 Float / 4 Frame temper‐

7950 Float / 4 Standard volu‐

7871 Float / 4 Fraction A Fractional flow of medi‐

7881 Float / 4 Fraction B Fractional flow of medi‐

7800 Float / 4 Fraction A % Fraction Flow Media A

7810 Float / 4 Fraction B % Fraction Flow Media B

Data type / Size in bytes

Parameter Description Default value

[units] (units register)

(7400)

(7500)

(7600)

ature

ture

meflow

Measured medium tem‐ perature

Measured frame tem‐ perature

Calculated volume flow [°C]

um A

um B

in Percent

[°C] (7700)

(7964)

[Kg/h] (7865) mass‐ flow

[m3/h] (7867) volu‐

meflow

[Kg/h] (7865) mass‐ flow

[m3/h] (7867) volu‐

meflow

- Read

Value range / Setting options

- Read

Read

Access level

only

Table 4-9 IO values

Modbus register

8803 Float / 4 Loop current

8900 Float / 4 Output frequen‐

Data type / Size in bytes

Parameter Description Default value

[units] (units register)

CH2

cy CH2

Calculated current at output channel 2

Calculated frequency at output channel 2

[mA]

[Hz]

Value range / Setting options

Read

FCT030 Modbus (From firmware 4.0)

Access level

only

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8969 Float / 4 Amount on CH2 Current totalized

8840 Unsigned / 2 Status output

9103 Float / 4 Loop current

9200 Float / 4 Output frequen‐

9269 Float / 4 Amount on CH3 Current totalized

9140 Unsigned / 2 Status output

10503 Float / 4 Input current

9129 Unsigned / 2 Digital input sig‐

9303 Float / 4 Loop current

9400 Float / 4 Output frequen‐

9469 Float / 4 Amount on CH4 Current totalized

9340 Unsigned / 2 Status output

10603 Float / 4 Input current

9329 Unsigned / 2 Digital input sig‐

Data type / Size in bytes

Parameter Description Default value

amount according to pulse output channel 2

Calculated status at

CH2

CH3

cy CH3

CH3

nal CH3

CH4

cy CH4

CH4

nal CH4

output channel 2 Calculated current at

output channel 3 Calculated frequency

at output channel 3

amount according to pulse output channel 3

Calculated status at output channel 3

Measured current at in‐ put channel 3

Detected logical level at channel 3

Calculated current at output channel 3

Calculated frequency at output channel 4

amount according to pulse output channel 4

Calculated status at output channel 4

Measured current at in‐ put channel 4

Detected logical level at channel 4

Value range / [units] (units register)

(Mass: 7400 / Volume: 7500 / Stand‐ ard Volume:

7964)

- 0 - 1 Read

[mA]

[Hz]

(Mass: 7400 / Volume: 7500 / Stand‐ ard Volume:

7964)

- 0 - 1 Read

[mA]

- 0 - 1 Read

[mA]

[Hz]

(Mass: 7400 / Volume: 7500 / Stand‐ ard Volume:

7964)

- 0 - 1 Read

[mA]

- 0 - 1 Read

Setting options

Read

Access level

only

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MODBUS commands

4.10 Modbus holding registers tables

4.10.3 Totalizers

Table 4-10 Totalizers

Modbus register

8300 Float / 4 Totalizer 1 value Totalized value of total‐

8303 Unsigned / 2 Totalizer 1 set Run, reset, or preset to‐

8304 Unsigned / 2 Totalizer 1 di‐

8316 Float / 4 Totalizer 1 pre‐

8319 Unsigned / 2 Totalizer 1 tar‐

8400 Float / 4 Totalizer 2 value Totalized value of total‐

8403 Unsigned / 2 Totalizer 2 set Run, reset, or preset to‐

8404 Unsigned / 2 Totalizer 2 di‐

Data type / Size in bytes

Parameter Description Default value

izer 1. Units depends on the selected proc‐ ess value the totalizer is configured to. Write access if Totaliz‐ er 1 target mode is set to 16: Manual

talizer 1.

Totalizer 1 direction. 1

rection

Preset value which will

set value

get mode

rection

be used when Totalizer 1 set is set to 2

Sets the desired mode for the totalizer.

izer 2. Units depends on the selected proc‐ ess value the totalizer is configured to. Write access if Totaliz‐ er 2 target mode is set to 16: Manual

talizer 2. Possible selections:

Totalizer 2 direction. 1

[units] (units register)

(8321 / 8320 /

8322)

(8321 / 8320 /

8322) 8

(8321 / 8320 /

8322)

Value range / Setting options

- Read /

● 0: Totalize

● 1: Reset

● 2: Preset to Totalizer 1 preset value

● 0: Balanced

● 1: Positive

● 2: Negative

● 3: Hold

- Read /

● 8. Auto, the totalizer algorithm running

● 16: Man, the totalizer algorithm is stopped. The totalizer value can be written

- Read /

● 0: Totalize

● 1: Reset

● 2: Preset to Totalizer 1 preset value

● 0: Balanced

● 1: Positive

● 2: Negative

● 3: Hold

Access level

write

Read / write

write

Read / write

write

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8416 Float / 4 Totalizer 2 pre‐

8419 Unsigned / 2 Totalizer 2 tar‐

8500 Float / 4 Totalizer 3 value Totalized value of total‐

8503 Unsigned / 2 Totalizer 3 set Run, reset, or preset to‐

8504 Unsigned / 2 Totalizer 3 di‐

8516 Float / 4 Totalizer 3 pre‐

8519 Unsigned / 2 Totalizer 3 tar‐

8549 Unsigned / 2 Reset all totaliz‐

Data type / Size in bytes

Parameter Description Default value

Preset value which will

set value

get mode

rection

set value

get mode

ers

be used when Totalizer 2 set is set to 2

Sets the desired mode for the totalizer.

izer 3. Units depends on the selected proc‐ ess value the totalizer is configured to. Write access if Totaliz‐ er 3 target mode is set to 16: Manual

talizer 3.

Totalizer 3 direction. 1

Preset value which will be used when Totalizer 3 set is set to 2

Sets the desired mode for the totalizer

Reset command for to‐ talizers 1 to 3.

[units] (units register)

(8321 / 8320 /

8322) 8

(8321 / 8320 /

8322)

(8321 / 8320 /

8322) 8

Value range / Setting options

- Read /

● 8. Auto, the totalizer

algorithm running

● 16: Man, the totalizer

algorithm is stopped. The totalizer value can be written

- Read /

● 0: Totalize

● 1: Reset

● 2: Preset to Totalizer

1 preset value

● 0: Balanced

● 1: Positive

● 2: Negative

● 3: Hold

- Read /

● 8. Auto, the totalizer

algorithm running

● 16: Man, the totalizer

algorithm is stopped. The totalizer value can be written

● 0: Run

● 1: Reset all totalizers

● 11: Reset totalizer 1

● 12: Reset totalizer 2

● 13: Reset totalizer 3

Access level

write

Read / write

write

Read / write

write

Read / write

Write on‐ ly

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MODBUS commands

4.10 Modbus holding registers tables

4.10.4 Units

Table 4-11 Units settings for values and quantities communicated via Modbus

Modbus register

7500 Unsigned / 2 Volume flow

Data type / Size in bytes

Parameter Description Default value

units

Units for volume flow values.

[units] (units register)

Value range / Setting options

● 15: ft³/min (cubic feet per minute)

● 16: gal/min (US gallons per minute)

● 17: l/min (liters per minute)

● 18: i.gal/min (Imperial gallons per minute)

● 19: m³/h (cubic meters per hour)

● 22: gal/s (US gallons per second)

● 23: Mgal/d (million US gallons per day)

● 24: l/s (liters per second)

● 25: Ml/d (million liters per day)

● 26: ft³/s (cubic feet per second)

● 27: ft³/d (cubic feet per day)

● 28: m³/s (cubic meters per second)

● 29: m³/d (cubic meters per day)

● 30: i.gal/h (Imperial gallons per hour)

● 31: i.gal/d (Imperial gallons per day)

● 130: ft³/h (cubic feet per hour)

● 131: m³/min (cubic meters per minute)

● 132: BBL42/s (1 barrel = 42 US gallons)

● 133: BBL42/min (1 barrel = 42 US gallons)

● 134: BBL42/h (1 barrel = 42 US gallons

● 135: BBL42/d (1 barrel = 42 US gallons

● 136: gal/h (US gallons per hour)

● 137: i.gal/s (Imperial gallons per second)

● 138: l/h (liters per hour)

● 170: BBL31/s (1 barrel = 31 US gallons

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7400 Unsigned / 2 Mass flow units Units for

Data type / Size in bytes

Parameter Description Default value

mass flow values.

[units] (units register)

Value range / Setting options

● 171: BBL31/min (1 barrel = 31 US

gallons)

● 172: BBL31/h (1 barrel = 31 US

gallons

● 70: g/s (grams per second)

● 71: g/min (grams per min)

● 72: g/h (grams per hour)

● 73: kg/s (kilograms per second)

● 74: kg/min (kilograms per minute)

● 75: kg/h (kilograms per hour)

● 76: kg/d (kilograms per day)

● 77: t/min (1 t = 1000 kg)

● 78: t/h (1 t = 1000 kg)

● 79: t/d (1 t = 1000 kg)

● 80: lb/s (pounds per second)

● 81: lb/min (pounds per minute)

● 82: lb/h (pounds per hour)

● 83: lb/d (pounds per day)

● 84: STon/min (1 STon = 2000 lb)

● 85: STon/h (1 STon = 2000 lb)

● 86: STon/d (1 STon = 2000 lb)

● 87: T/h (1 T = 2240 lb)

● 88: T/d (1 T = 2240 lb)

● 253: custom units (see Custom

mass flow units string (8458) / factor (8456))

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7964 Unsigned / 2 Standard vol‐

Data type / Size in bytes

Parameter Description Default value

ume flow units

Units for standard volume flow values.

[units] (units register)

188

Value range / Setting options

● 121: Nm³/h (normal cubic meters per hour)

● 122: Nl/h (normal liters per hour)

● 123: Sft³/min (standard cubic feet per minute)

● 174: Nl/d (normal liters per day)

● 175: Nl/min (normal liters per minute)

● 176: Nl/s (normal liters per second)

● 177: Sl/d (standard liters per day)

● 178: Sl/h (standard liters per hour)

● 179: Sl/min (standard liters per minute)

● 180: Sl/s (standard liters per second)

● 181: Nm³/d (normal cubic meters per day)

● 182: Nm³/min (normal cubic meters per minute)

● 183: Nm³/s (normal cubic meters per second)

● 184: Sft³/d (standard cubic feet per day)

● 185: Sft³/h (standard cubic feet per hour)

● 186: Sft³/s (standard cubic feet per second)

● 187: Sm³/d (standard cubic meters per day)

● 188: Sm³/h (standard cubic meters per hour)

● 189: Sm³/min (standard cubic meters per minute) 190: Sm³/s (standard cubic meters per second)

● 253: custom units (see Custom standard volume flow units string (7518) / factor (7516))

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7600 Unsigned / 2 Density units Units for

7700 Unsigned / 2 Temperature

8321 Unsigned / 2 Totalizer 1 units Units for

Data type / Size in bytes

Parameter Description Default value

density val‐ ues.

Units for

units

tempera‐ ture values.

volume quantities of totalizer 1 (totalizer 1 is config‐ ured to vol‐ ume flow).

[units] (units register)

Value range / Setting options

● 91: g/cm³ (grams per cubic)

centimeters

● 92: kg/m³ (kilograms per cubic

meter)

● 93: lb/gal (pounds per US gallon)

● 94: lb/ft³ (pounds per cubic foot)

● 95: g/ml (grams per mililiter)

● 96: kg/l (kilograms per liter)

● 97: g/l (grams per liter)

● 98: lb/in³ (pounds per cubic inch)

● 99: STon/yd³ (1 STon = 2000 lb)

● 146: μg/l (micrograms per liter)

● 147: μg/m³ (micrograms per cubic

meter)

● 170: mg/l (milligrams per liter)

● 253: custom units (see Custom

density units string (8464) / factor (8462))

● 32: °C (degrees Celsius)

● 33: °F (degrees Fahrenheit)

● 34: °R (degrees Rankine)

● 35: K (kelvins)

● 40: US gallons

● 41: l (liters)

● 42: i.gal (Imperial gallons)

● 43: m³ (cubic meters)

● 46: BBL42 (1 barrel = 42 US

gallons)

● 110: bush (bushels)

● 111: yd³ (cubic yards)

● 112: ft³ (cubic feet)

● 113: in³ (cubic inches)

● 124: BBL31.5 (1 barrel = 31.5 US

gallons)

● 170: BBL31 (1 barrel = 31 US

gallons)

● 236: hl (hectoliters)

● 253: custom units (see Custom

volume units string (8452) / factor (8450))

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8320 Unsigned / 2 Totalizer 1 units Units for

8322 Unsigned / 2 Totalizer 1 units Units for

8421 Unsigned / 2 Totalizer 2 units Units for

Data type / Size in bytes

Parameter Description Default value

mass quan‐ tities of to‐ talizer 1 (to‐ talizer 1 is configured to mass flow).

standard volume quantities of totalizer 1 (totalizer 1 is config‐ ured to standard volume flow).

volume quantities of totalizer 2 (totalizer 2 is config‐ ured to vol‐ ume flow).

[units] (units register)

171

Value range / Setting options

● 60: g (grams)

● 61: kg (kilograms)

● 62: t (1 t = 1000 kg)

● 63: lb (pounds)

● 64: STon (1 STon = 2000 lb)

● 65: T (1 T = 2240 lb)

● 125: oz (ounces)

● 253: custom units (see Custom mass units string (8476) / factor (8474))

● 166: Nm³ (normal cubic meters)

● 167: Nl (normal liters)

● 168: Sft³ (standard cubic feet)

● 171: Sl (standard liters)

● 172: Sm³ (standard cubic meters)

● 40: US gallons

● 41: l (liters)

● 42: i.gal (Imperial gallons)

● 43: m³ (cubic meters)

● 46: BBL42 (1 barrel = 42 US gallons)

● 110: bush (bushels)

● 111: yd³ (cubic yards)

● 112: ft³ (cubic feet)

● 113: in³ (cubic inches)

● 124: BBL31.5 (1 barrel = 31.5 US gallons)

● 170: BBL31 (1 barrel = 31 US gallons)

● 236: hl (hectoliters)

● 253: custom units (see Custom volume units string (8452) / factor (8450))

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8420 Unsigned / 2 Totalizer 2 units Units for

8422 Unsigned / 2 Totalizer 2 units Units for

8520 Unsigned / 2 Totalizer 3 units Units for

Data type / Size in bytes

Parameter Description Default value

mass quan‐ tities of to‐ talizer 2 (to‐ talizer 2 is configured to mass flow).

standard volume quantities of totalizer 2 (totalizer 2 is config‐ ured to standard volume flow).

mass quan‐ tities of to‐ talizer 3 (to‐ talizer 3 is configured to mass flow).

[units] (units register)

171

Value range / Setting options

● 60: g (grams)

● 61: kg (kilograms)

● 62: t (1 t = 1000 kg)

● 63: lb (pounds)

● 64: STon (1 STon = 2000 lb)

● 65: T (1 T = 2240 lb)

● 125: oz (ounces)

● 253: custom units (see Custom

mass units string (8476) / factor (8474))

● 166: Nm³ (normal cubic meters)

● 167: Nl (normal liters)

● 168: Sft³ (standard cubic feet)

● 171: Sl (standard liters)

● 172: Sm³ (standard cubic meters)

● 60: g (grams)

● 61: kg (kilograms)

● 62: t (1 t = 1000 kg)

● 63: lb (pounds)

● 64: STon (1 STon = 2000 lb)

● 65: T (1 T = 2240 lb)

● 125: oz (ounces)

● 253: custom units (see Custom

mass units string (8476) / factor (8474))

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8521 Unsigned / 2 Totalizer 3 units Units for

8522 Unsigned / 2 Totalizer 3 units Units for

8976 Unsigned / 2 Pulse width

Data type / Size in bytes

Parameter Description Default value

volume quantities of totalizer 3 (totalizer 3 is config‐ ured to vol‐ ume flow).

standard volume quantities of totalizer 3 (totalizer 3 is config‐ ured to standard volume flow).

Units of

units CH2

pulse dura‐ tion values of CH2 in pulse mode.

[units] (units register)

171

Value range / Setting options

● 40: US gallons

● 41: l (liters)

● 42: i.gal (Imperial gallons)

● 43: m³ (cubic meters)

● 46: BBL42 (1 barrel = 42 US gallons)

● 110: bush (bushels)

● 111: yd³ (cubic yards)

● 112: ft³ (cubic feet)

● 113: in³ (cubic inches)

● 124: BBL31.5 (1 barrel = 31.5 US gallons)

● 170: BBL31 (1 barrel = 31 US gallons)

● 236: hl (hectoliters)

● 253: custom units (see Custom volume units string (8452) / factor (8450))

● 166: Nm³ (normal cubic meters)

● 167: Nl (normal liters)

● 168: Sft³ (standard cubic feet)

● 171: Sl (standard liters)

● 172: Sm³ (standard cubic meters)

● 51: s (seconds)

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8993 Unsigned / 2 Volume units

8992 Usigned / 2 Mass units CH2 Units for

8994 Unsigned / 2 Standard vol‐

9276 Unsigned / 2 Pulse width

Data type / Size in bytes

Parameter Description Default value

Units for

CH2

ume units CH2

units CH3

volume quantities related to CH2 if in pulse mode.

mass quan‐ tities rela‐ ted to CH2 if in pulse mode.

Units for standard volume quantities related to CH2.

Units of pulse dura‐ tion of CHh3 in pulse mode.

[units] (units register)

171

Value range / Setting options

● 40: US gallons

● 41: l (liters)

● 42: i.gal (Imperial gallons)

● 43: m³ (cubic meters)

● 46: BBL42 (1 barrel = 42 US

gallons)

● 110: bush (bushels)

● 111: yd³ (cubic yards)

● 112: ft³ (cubic feet)

● 113: in³ (cubic inches)

● 124: BBL31.5 (1 barrel = 31.5 US

gallons)

● 170: BBL31 (1 barrel = 31 US

gallons)

● 236: hl (hectoliters)

● 253: custom units (see Custom

volume units string (8452) / factor (8450))

● 60: g (grams)

● 61: kg (kilograms)

● 62: t (1 t = 1000 kg)

● 63: lb (pounds)

● 64: STon (1 STon = 2000 lb)

● 65: T (1 T = 2240 lb)

● 125: oz (ounces)

● 253: custom units (see Custom

mass units string (8476) / factor (8474))

● 166: Nm³ (normal cubic meters)

● 167: Nl (normal liters)

● 168: Sft³ (standard cubic feet)

● 171: Sl (standard liters)

● 172: Sm³ (standard cubic meters)

● 51: s (seconds)

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

9293 Unsigned / 2 Volume units

9292 Unsigned / 2 Mass units CH3 Units for

9294 Unsigned / 2 Standard vol‐

9476 Unsigned / 2 Pulse width

Data type / Size in bytes

Parameter Description Default value

Units for

CH3

ume units CH3

units CH4

volume quantities related to CH3 if in pulse mode.

mass quan‐ tities rela‐ ted to CH3 if in pulse mode.

Units for standard volume quantities related to CH3.

Units of pulse dura‐ tion values of CH4 in pulse mode.

[units] (units register)

171

Value range / Setting options

● 40: US gallons

● 41: l (liters)

● 42: i.gal (Imperial gallons)

● 43: m³ (cubic meters)

● 46: BBL42 (1 barrel = 42 US gallons)

● 110: bush (bushels)

● 111: yd³ (cubic yards)

● 112: ft³ (cubic feet)

● 113: in³ (cubic inches)

● 124: BBL31.5 (1 barrel = 31.5 US gallons)

● 170: BBL31 (1 barrel = 31 US gallons)

● 236: hl (hectoliters)

● 253: custom units (see Custom volume units string (8452) / factor (8450))

● 60: g (grams)

● 61: kg (kilograms)

● 62: t (1 t = 1000 kg)

● 63: lb (pounds)

● 64: STon (1 STon = 2000 lb)

● 65: T (1 T = 2240 lb)

● 125: oz (ounces)

● 253: custom units (see Custom mass units string (8476) / factor (8474))

● 166: Nm³ (normal cubic meters)

● 167: Nl (normal liters)

● 168: Sft³ (standard cubic feet)

● 171: Sl (standard liters)172: Sm³ (standard cubic meters)

● 51: s (seconds)

Access level

Read / write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

9493 Unsigned / 2 Volume units

9492 Unsigned / 2 Mass units CH4 Units for

9494 Unsigned / 2 Standard vol‐

8470 String / 8 Custom volume

Data type / Size in bytes

Parameter Description Default value

Units for

CH4

ume units CH4

flow units string

volume quantities related to CH4 if in pulse mode.

mass quan‐ tities rela‐ ted to CH4 if in pulse mode.

Units for standard volume quantities related to CH4.

User specif‐ ic string for volume flow values.

Value range /

[units] (units register)

171

-------- - Read /

Setting options

● 40: US gallons

● 41: l (liters)

● 42: i.gal (Imperial gallons)

● 43: m³ (cubic meters)

● 46: BBL42 (1 barrel = 42 US

gallons)

● 110: bush (bushels)

● 111: yd³ (cubic yards)

● 112: ft³ (cubic feet)

● 113: in³ (cubic inches)

● 124: BBL31.5 (1 barrel = 31.5 US

gallons)

● 170: BBL31 (1 barrel = 31 US

gallons)

● 236: hl (hectoliters)

● 253: custom units (see Custom

volume units string (8452) / factor (8450))

● 60: g (grams)

● 61: kg (kilograms)

● 62: t (1 t = 1000 kg)

● 63: lb (pounds)

● 64: STon (1 STon = 2000 lb)

● 65: T (1 T = 2240 lb)

● 125: oz (ounces)

● 253: custom units (see Custom

mass units string (8476) / factor (8474))

● 166: Nm³ (normal cubic meters)

● 167: Nl (normal liters)

● 168: Sft³ (standard cubic feet)

● 171: Sl (standard liters)172: Sm³

(standard cubic meters)

Access level

Read / write

write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8468 Float / 4 Custom volume

7518 String / 8 Custom stand‐

7516 Float / 4 Custom stand‐

8458 String / 8 Custom mass

8456 Float / 4 Custom mass

8464 String / 8 Custom density

8462 Float / 4 Custom density

8494 String / 8 Custom velocity

Data type / Size in bytes

Parameter Description Default value

flow units factor

ard volume flow units string

ard volume flow units factor

flow units string

flow units factor

units string

units factor

units string

Conversion factor for user specif‐ ic volume flow values related to m3/s.

User specif‐ ic string for standard volume flow values.

Conversion factor for user specif‐ ic standard volume flow values related to Sm3/s.

User specif‐ ic string for mass flow values.

Conversion factor for user specif‐ ic mass flow values related to kg/s.

User specif‐ ic string for density val‐ ues.

Conversion factor for user specif‐ ic density values rela‐ ted to kg/ m3.

User specif‐ ic string for velocity val‐ ues.

Value range / [units] (units register)

1.0 - Read /

-------- - Read /

1.0 - Read /

-------- - Read /

1.0 - Read /

-------- - Read /

1.0 - Read /

-------- - Read /

Setting options

Access level

write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8492 Float / 4 Custom velocity

8452 String / 8 Custom volume

8450 Float / 4 Custom volume

8476 String / 8 Custom mass

8474 Float / 4 Custom mass

Data type / Size in bytes

Parameter Description Default value

units factor

units string

units factor

units string

units factor

Conversion factor for user specif‐ ic velocity values rela‐ ted to m/s.

User specif‐ ic string for volume quantities.

Conversion factor for user specif‐ ic volume quantities related to m3.

User specif‐ ic string for mass quan‐ tities.

Conversion factor for user specif‐ ic mass quantities related to kg.

Value range / [units] (units register)

1.0 - Read /

-------- - Read /

1.0 - Read /

-------- - Read /

1.0 - Read /

Setting options

Access level

write

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MODBUS commands

4.10 Modbus holding registers tables

4.10.5 Setup

4.10.5.1 Sensor settings

Table 4-12 General sensor settings

Modbus register

2100 Unsigned / 2 Flow direction Define positive and

2130 Unsigned / 2 Process Noise

2125 Float / 4 Low Massflow

2426 Float / 4 Massflow Cor‐

Data type / Size in bytes

Parameter Description Default value

negative flow direction. Default positive flow di‐ rection is indicated by an arrow on the sensor.

Select process noise

Damping

Cut-Off

rectionFactor

dampinglevel:0: 55 ms filtering (Centrifugal‐ Pump)1: 110 ms filter‐ ing (TriplexPump)2: 220 ms filtering (Du‐ plexPump)3: 400 ms fil‐ tering (Simplex‐ Pump)4: 800 ms filter‐ ing (CamPump)

Set massflow limit for lowflow cut-off.Below this limit massflowout‐ put is forced to zero.If Low Flow Cut-Off is set to0, the cut-off function‐ ality isdisabled.No‐ tice:It is recommended to set alower value for gas applications.

Specify correction fac‐ tor foruse in the mass‐ flow calculation

Value range / [units] (units register)

1 0 Low to 4 High Read /

Sensor size specific

[kg/s]

1 -1.999 to +1.999 Read /

Setting options

● 0: Negative: The flow is measured '+' in default negative direction and '-' in default positive direction.

● 1: Positive: The flow is measured '+' in default positive direction and '-' in default negative direction.

0 to 1023 Read /

Access level

Read / write

write

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4.10.5.2 Density

Density settings

Table 4-13 Density settings

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

2127 Float / 4 Empty Tube

2129 Unsigned /

Data type / Size in bytes

Parameter Description Default value

Limit

Empty Tube De‐ tection

Define threshold value of

empty tube Set automatic detec‐

tion of Empty Tube On/Off 0 = off (Empty tube is

off). 1 = on (a density value

below Empty Tube Limit trig‐

gers an alarm. All flow rate val‐

ues are forced to zero %).

Value range /

[units] (units register)

500 [kg/m3] 14 000 to

0 0 to1 Read /

Setting options

+14 000

Access level

Read / write

write

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

2442 Float / 4 Density Correc‐

2444 Float / 4 Density Correc‐

Data type / Size in bytes

Parameter Description Default value

tion Factor

tion Offset

Set density compensa‐ tion

value (gain) in order to make

a density correction (scale

factor). To increase the dis‐

played density value with +0.5

%, set the density factor to

1.005. The displayed density

value will now be 0.5 % higher than before Set density compensa‐

tion value (offset) in order to make an offset on the

measured density. To make the flowmeter

show + 2 kg/m3, change the

density offset to 2.000 kg/m3 in

the 'Sensor' menu

Value range / [units] (units register)

1 -1.999 to

1 [kg/m3]

Setting options

+1.999

-1 400 to +1

400

Access level

Read / write

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4.10.5.3 Aerated flow

Table 4-14 Aerated Flow

MODBUS commands

4.10 Modbus holding registers tables

HMI menu ID Parameter Description Default value

[unit]

3.9.1 Aerated Flow Filter Set the process value filter for aerated flow. Auto means that filtering starts automatically when measuring aerated flow.

3.9.2 Filter Time Constant "Select process value filter level. * 0.5: Low … 30: High"

3.9.3 Alarm Limit Set alarm limit in percent of ac‐ cepted bad measurements.

3.9.4 Warning Limit Set warning limit in percent of accepted bad measurements.0[%]

3.9.5 Measurement Sample

Time

3.9.6 Filter Start Hysteresis Set the hysteresis value. The fil‐

3.9.7 Minimum Filtering Time Set the filtering time. The filter‐

3.9.8 Filter Iteration Set the number of times to re‐

3.9.9 Bandwidth Factor Increase the Bandwidth Factor

3.9.10 Filter Pole Shift Configure the bandwidth and

Set the time period over which the actual percentage of unsta‐ ble measurements is calculated

ter is active when the hysteresis value is exceeded.

ing time is reset each time hys‐ teresis band is exceeded.

peat the same filter. Increasing the number will increase the damping.

to reduce the LP (low pass) bandwidth filtering.

damping in the stop band. A high number will give a small band‐ width and an increased damping in the stop band.

Auto (non-SIL var‐ iants) Off (SIL variants)

10 seconds

80 [%]

5 [s]

0.02 [mV]

100 [cycles]

3 1 to 5 Expert

2 0 to 4 Expert

2 1 to 5 Expert

Value range Access level

● Off

● On

● Auto

● 10 seconds

● 20 second

● 30 seconds

● User defined value

0 to 99 Expert

1 to 10 Expert

0 to 0.124 Expert

0 to 65535 Expert

User

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∑

=≡1

MODBUS commands

4.10 Modbus holding registers tables

4.10.5.4 Zero point adjustment

In the following the automatic zero point adjustment function is described.

Note Preconditions

Before a zero point adjustment is initiated, the pipe must be flushed, filled and at an absolute flowrate of zero preferably also at operating pressure and temperature.

Note Change of parameters during zero point adjustment

Do not change any other parameter during the zero point adjustment procedure.

Automatic zero point adjustment

The device measures and calculates the correct zero point automatically.

The automatic zero point adjustment of the flowmeter is set by the following parameters:

● Duration (Modbus address 2135)

● Start Zero Point Adjustment (Modbus address 2180)

When zero adjust is initiated by selecting Start Zero Point Adjustment, the massflow values are acquired and totalized for the configured period (Duration). The default zero point adjustment period (30 s.) is normally sufficient for a stable zero point measurement.

Note Extremely low flow quantity

If the flow quantity is extremely small, extremely precise measurement is necessary. In this case, a long zero point adjustment period can be selected for improved zero point adjustment.

Zero point calculation

During zero point adjustment, an average value is automatically calculated using the following formula:

Zero Point Offset Value Average of N flow values

xi is an instantaneous flow value sampled in the time domain

N = Number of samples during zero point ad‐ justment

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FCT030 Modbus (From firmware 4.0)

Page 63

The offset value must be within the determined Zero Point Offset Limit (Modbus address 2140).

)(

−

≡

∑

Note Exceeded zero point offset limit

If the offset value is greater than the configured limit, proceed as follows:

● Check that the tube is completely filled and that the flowrate is absolute zero.

● Check the validity of the configured zero point offset limit.

● Repeat the zero point adjustment.

Zero point standard deviation

After completion of the procedure, the standard deviation is calculated in accordance with the following formula:

Zero Point Standard Deviation Standard deviation of N values

MODBUS commands

4.10 Modbus holding registers tables

The standard deviation contains important feedback on the homogeneity of the fluid, for example on the presence of bubbles or particles.

The standard deviation must be within the determined Standard Deviation Limit (Modbus address 2138).

Note Exceeded standard deviation limit

If the standard deviation is greater than the configured limit, proceed as follows:

● Check that the tube is completely filled and that the flow rate is absolute zero.

● Check that the installation is vibration-free.

● Check the validity of the configured standard deviation limit in parameter 2.6.4 Standard Deviation Limit.

● Repeat the zero point adjustment.

Successful automatic zero point adjustment

If the new zero point offset value is valid, it is automatically stored as the new zero point for the sensor. It remains stored in the case of a power failure.

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MODBUS commands

4.10 Modbus holding registers tables

Manual zero point adjustment

In case an automatic zero point adjustment cannot be performed, it is possible to do a manual zero point adjustment by entering the zero point offset value.

1. Select Modbus address 2132 Zero Point Adjustment and set the value to 1 = Manual Zero Point Adjustment.

2. Select Modbus address 2133 Manual Zero Point Offset and enter the desired offset value.

4.10.5.5 Quality codes for process values

Table 4-15 Quality codes for process value

Modbus register

7409 Unsigned / 2 Mass flow sta‐

7509 Unsigned / 2 Volume flow

Data type / Size in bytes

Parameter Description Default value

tus

status

Quality sta‐ tus code of the process value Mass flow

Quality sta‐ tus code of the process value Vol‐ ume flow

[units] (units register)

Value range / Setting options

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

Access level

Read only

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7609 Unsigned / 2 Density status Quality sta‐

7709 Unsigned / 2 Media tempera‐

7714 Unsigned / 2 Frame tempera‐

Data type / Size in bytes

Parameter Description Default value

tus code of the process value Den‐ sity

Quality sta‐

ture status

tus code of the process value Me‐ dia temper‐ ature

Quality sta‐ tus code of the process value Frame tem‐ perature

[units] (units register)

Value range / Setting options

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

Access level

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7855 Unsigned / 2 Fraction A Per‐

7856 Unsigned / 2 Fraction B Per‐

7891 Unsigned / 2 Fraction A flow

Data type / Size in bytes

Parameter Description Default value

cent status

status

Quality sta‐ tus code of the process value Frac‐ tion A Per‐ cent

Quality sta‐ tus code of the process value Frac‐ tion B Per‐ cent

Quality sta‐ tus code of the process value Frac‐ tion A flow

[units] (units register)

Value range / Setting options

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

Access level

Read only

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7892 Unsigned / 2 Fraction B flow

7919 Unsigned / 2 Reference Den‐

7963 Unsigned / 2 Corrected vol‐

Data type / Size in bytes

Parameter Description Default value

status

sity status

ume flow status

Quality sta‐ tus code of the process value Frac‐ tion B flow

Quality sta‐ tus code of the process value Ref‐ erence den‐ sity

Quality sta‐ tus code of the process Corrected value vol‐ ume flow

[units] (units register)

Value range / Setting options

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

Access level

Read only

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MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8318 Unsigned / 2 Totalizer 1 sta‐

8418 Unsigned / 2 Totalizer 2 sta‐

8518 Unsigned / 2 Totalizer 3 sta‐

Data type / Size in bytes

Parameter Description Default value

tus

Quality sta‐ tus code of the process value Total‐ izer 1

Quality sta‐ tus code of the process value Total‐ izer 2

Quality sta‐ tus code of the process value Total‐ izer 3

[units] (units register)

Value range / Setting options

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

● Limit status bit 4 & 5:

● 11: Constant

● 01: Low limited

● 10: High limited

● 00: Not limited

● Process data status bit 6 & 7:

● 11: Good

● 01: Poor Accuracy

● 10: Manual / Fixed

● 00: Bad

Access level

Read only

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4.10.5.6 Process values

Table 4-16 Volume flow settings

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7510 Float / 4 Low flow cut-off Volume flow limit for

7501 Float / 4 Upper alarm

7503 Float / 4 Upper warning

7505 Float / 4 Lower warning

7507 Float / 4 Lower alarm

7512 Float / 4 Hysteresis Hysteresis that affects

Data type / Size in bytes

Parameter Description Default value

low flow cut-off. Below limit volume flow output is forced to zero.

Exceeding this limit

limit

causes an alarm.

Exceeding this limit causes a warning.

Falling below this limit causes a warning.

Falling below this limit causes an alarm.

the alarm and warning limits.

[units] (units register)

Sensor size specific

max. volume flow [m3/s] (7500)

-max. volume flow [m3/s] (7500)

0.0 [m3/s] (7500)

Value range / Setting options

0 - max. volume flow Read /

-max. volume flow +max. volume flow

0 - max. volume flow Read /

Access level

write

Read / write

write

Mass flow settings

Table 4-17 Mass flow settings

Modbus register

7410 Float / 4 Low flow cut-off Mass flow limit for low

7401 Float / 4 Upper alarm

7403 Float / 4 Upper warning

FCT030 Modbus (From firmware 4.0) Function Manual, 06/2018, A5E39931813-AB 69

Data type / Size in bytes

Parameter Description Default value

[units] (units register)

0.001 x max.

limit

flow cut-off. Below limit mass flow output is forced to zero.

Exceeding this limit causes an alarm.

Exceeding this limit causes a warning.

mass flow [kg/s] (7400)

max. mass flow [kg/s] (7400)

Value range / Setting options

0 - max. mass flow Read /

-max. mass flow +max. mass flow

Access level

write

Read / write

Page 70

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7405 Float / 4 Lower warning

7407 Float / 4 Lower alarm

7412 Float / 4 Hysteresis Hysteresis that affects

Table 4-18 Density settings

Modbus register

7601 Float / 4 Upper alarm

7603 Float / 4 Upper warning

7605 Float / 4 Lower warning

7607 Float / 4 Lower alarm

7612 Float / 4 Hysteresis Hysteresis that affects

Data type / Size in bytes

Parameter Description Default value

Falling below this limit

limit

Parameter Description Default value

limit

causes a warning.

Falling below this limit causes an alarm.

the alarm and warning limits.

Exceeding this limit causes an alarm.

Exceeding this limit causes a warning.

Falling below this limit causes a warning.

Falling below this limit causes an alarm.

the alarm and warning limits.

[units] (units register)

-max. mass flow [kg/s] (7400)

0 [kg/s] (7400)

[units] (units register)

max. density [kg/m3] (7600)

1.0 [kg/m3] (7600)

.0 [kg/m3] (7600)

Value range / Setting options

-max. mass flow +max. mass flow

0 - max. mass flow Read /

Value range / Setting options

0 - max. density Read /

Access level

Read / write

write

Access level

write

Medium temperature settings

Table 4-19 Medium temperature settings

Modbus register

7701 Float / 4 Upper alarm

7703 Float / 4 Upper warning

70 Function Manual, 06/2018, A5E39931813-AB

Data type / Size in bytes

Parameter Description Default value

[units] (units register)

limit

Exceeding this limit causes an alarm.

Exceeding this limit causes a warning.

max. medium temperature [°C] (7700)

Value range / Setting options

min. medium temperature max. medium temperature

FCT030 Modbus (From firmware 4.0)

Access level

Read / write

Page 71

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7705 Float / 4 Lower warning

7707 Float / 4 Lower alarm

7712 Float / 4 Hysteresis Hysteresis that af‐

Table 4-20 Medium temperature settings

Modbus register

7715 Float / 4 Upper alarm

7717 Float / 4 Upper warning

7719 Float / 4 Lower warning

7721 Float / 4 Lower alarm

7723 Float / 4 Hysteresis Hysteresis that af‐

Data type / Size in bytes

Parameter Description Default value

Falling below this

limit

Parameter Description Default value

limit

limit causes a warn‐ ing.

Falling below this limit causes an alarm.

fects the alarm and warning limits.

Exceeding this limit causes an alarm.

Exceeding this limit causes a warning.

Falling below this limit causes a warn‐ ing.

Falling below this limit causes an alarm.

fects the alarm and warning limits.

[units] (units register)

min. medium temperature [°C] (7700)

0.0 [K]

[units] (units register)

max. medium temperature [°C] (7700)

min. medium temperature [°C] (7700)

0.0 [K]

Value range / Setting options

min. medium temperature max. medium temperature

0.0 - 200.0 Read /

Value range / Setting options

min. medium temperature max. medium temperature

0.0 - 200.0 Read /

Access level

Read / write

write

Access level

Read / write

write

Table 4-21 Fraction Flow Media A in Percent settings

Modbus register

7802 Float / 4 Upper alarm

7804 Float / 4 Upper warning

7806 Float / 4 Lower warning

FCT030 Modbus (From firmware 4.0) Function Manual, 06/2018, A5E39931813-AB 71

Data type / Size in bytes

Parameter Description Default value

[units] (units register)

limit

Exceeding this limit causes an alarm.

Exceeding this limit causes a warning.

Falling below this limit causes a warn‐ ing.

100 0 - 100 Read /

0 0 - 100 Read /

Value range / Setting options

Access level

write

Page 72

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7808 Float / 4 Lower alarm

7857 Float / 4 Hysteresis Hysteresis that af‐

Table 4-22 Fraction Flow Media B in Percent settings

Modbus register

7812 Float / 4 Upper alarm

7814 Float / 4 Upper warning

7816 Float / 4 Lower warning

7818 Float / 4 Lower alarm

7859 Float / 4 Hysteresis Hysteresis that af‐

Data type / Size in bytes

Parameter Description Default value

Falling below this

limit

Parameter Description Default value

limit

limit causes an alarm.

fects the alarm and warning limits.

Exceeding this limit causes an alarm.

Exceeding this limit causes a warning.

Falling below this limit causes a warn‐ ing.

Falling below this limit causes an alarm.

fects the alarm and warning limits.

Value range / [units] (units register)

0 0 - 100 Read /

[units] (units register)

100 0 - 100 Read /

0 0 - 100 Read /

Setting options

Value range /

Setting options

Access level

write

Access level

write

Table 4-23 Fraction mass flow A settings

Modbus register

7873 Float / 4 Upper alarm

7875 Float / 4 Upper warning

7877 Float / 4 Lower warning

7879 Float / 4 Lower alarm

7861 Float / 4 Hysteresis Hysteresis that af‐

Data type / Size in bytes

Parameter Description Default value

Exceeding this limit

limit

causes an alarm. Exceeding this limit

causes a warning. Falling below this

limit causes a warn‐ ing.

Falling below this limit causes an alarm.

fects the alarm and warning limits.

Value range / [units] (units register)

100 0 - 100 Read /

0 0 - 100 Read /

Setting options

Access level

write

FCT030 Modbus (From firmware 4.0)

72 Function Manual, 06/2018, A5E39931813-AB

Page 73

Table 4-24 Fraction volume flow A settings

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7782 Float / 4 Upper alarm

7784 Float / 4 Upper warning

7786 Float / 4 Lower warning

7788 Float / 4 Lower alarm

7790 Float / 4 Hysteresis Hysteresis that af‐

Table 4-25 Fraction mass flow B settings

Modbus register

7883 Float / 4 Upper alarm

7885 Float / 4 Upper warning

7887 Float / 4 Lower warning

7889 Float / 4 Lower alarm

7863 Float / 4 Hysteresis Hysteresis that af‐

Data type / Size in bytes

Parameter Description Default value

Exceeding this limit

limit

Parameter Description Default value

limit

causes an alarm. Exceeding this limit

causes a warning. Falling below this

limit causes a warn‐ ing.

Falling below this limit causes an alarm.

fects the alarm and warning limits.

Exceeding this limit causes an alarm.

Exceeding this limit causes a warning.

Falling below this limit causes a warn‐ ing.

Falling below this limit causes an alarm.

fects the alarm and warning limits.

Value range / [units] (units register)

100 0 - 100 Read /

0 0 - 100 Read /

[units] (units register)

100 0 - 100 Read /

0 0 - 100 Read /

Setting options

Value range /

Setting options

Access level

write

Access level

write

Fraction volume flow B settings

Table 4-26 Fraction volume flow B settings

Modbus register

7923 Float / 4 Upper alarm

7925 Float / 4 Upper warning

FCT030 Modbus (From firmware 4.0) Function Manual, 06/2018, A5E39931813-AB 73

Data type / Size in bytes

Parameter Description Default value

[units] (units register)

limit

Exceeding this limit causes an alarm.

Exceeding this limit causes a warning.

100 0 - 100 Read /

Value range /

Setting options

Access level

write

Page 74

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

7927 Float / 4 Lower warning

7929 Float / 4 Lower alarm

7931 Float / 4 Hysteresis Hysteresis that af‐

Data type / Size in bytes

Parameter Description Default value

Falling below this

limit

limit causes a warn‐ ing.

Falling below this limit causes an alarm.

fects the alarm and warning limits.

4.10.5.7 Totalizers

Totalizer 1 settings

Table 4-27 Totalizer 1 settings

Modbus register

8305 Unsigned / 2 Process value Select process value

8302 Unsigned / 2 Fail-safe behav‐

8323 Float / 4 Volume upper

Data type / Size in bytes

Parameter Description Default value

for totalization.

Behavior of the totaliz‐

ior

alarm limit

er during the occur‐ ence of bad input value.

Exceeding this limit causes an alarm when volume flow is selected as input.

Value range / [units] (units register)

0 0 - 100 Read /

[units] (units register)

Max. floating point value [m3] (8321)

Setting options

Value range / Setting options

● 0: Cut-off filtered mass flow

● 1: Cut-off filtered volume flow

● 4: Corrected volume flow

● 5: Fractional flow medium A

● 5: Fractional flow medium B

● 0: RUN; totalization is continued using the bad input value.

● 1: HOLD; totalization is stopped.

● 2: MEMORY; totalization is continued based on the last incoming good value.

Read /

Access level

write

Access level

Read / write

write

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Page 75

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8325 Float / 4 Volume upper

8327 Float / 4 Volume lower

8329 Float / 4 Volume lower

8331 Float / 4 Volume alarm

8306 Float / 4 Mass upper

8308 Float / 4 Mass upper

8310 Float / 4 Mass lower

8312 Float / 4 Mass lower

8314 Float / 4 Mass alarm hys‐

8333 Float / 4 Standard vol‐

8335 Float / 4 Standard vol‐

8337 Float / 4 Standard vol‐

Data type / Size in bytes

Parameter Description Default value

warning limit

alarm limit

hysteresis

alarm limit

warning limit

alarm limit

teresis

ume upper alarm limit

ume upper warning limit

ume lower warning limit

Exceeding this limit causes a warning when volume flow is selected as input.

Falling below this limit causes a warning when volume flow is selected as input.

Falling below this limit causes an alarm when volume flow is selected as input.

Hysteresis that affects the alarm and warning limits when volume flow is selected as in‐ put.

Exceeding this limit causes an alarm when mass flow is selected as input.

Exceeding this limit causes a warning when mass flow is selected as input.

Falling below this limit causes a warning when mass flow is selected as input.

Falling below this limit causes an alarm when mass flow is selected as input.

Hysteresis that affects the alarm and warning limits when mass flow is selected as input.

Exceeding this limit causes an alarm when volume flow is selected as input.

Exceeding this limit causes a warning when volume flow is selected as input.

Falling below this limit causes a warning when volume flow is selected as input.

[units] (units register)

Max. floating point value [m3] (8321)

Min. floating point value [m3] (8321)

0.0 [m3] (8321)

Max. floating point value [kg] (8320)

Min. floating point value [kg] (8320)

0.0 [kg] (8320)

Max. floating point value [Sl] (8322)

Min. floating point value [Sl] (8322)

Value range / Setting options

Read /

- Read /

Read /

- Read /

Read /

Access level

write

FCT030 Modbus (From firmware 4.0) Function Manual, 06/2018, A5E39931813-AB 75

Page 76

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8339 Float / 4 Standard vol‐

8341 Float / 4 Standard vol‐

Data type / Size in bytes

Parameter Description Default value

Falling below this limit ume lower alarm limit

ume alarm hys‐ teresis

causes an alarm when

volume flow is selected

as input.

Hysteresis that affects

the alarm and warning

limits when volume

flow is selected as in‐

put.

Totalizer 2 settings

Table 4-28 Totalizer 2 settings

Modbus register

8405 Unsigned / 2 Process value Select process value

8402 Unsigned / 2 Fail-safe behav‐

8423 Float / 4 Volume upper

8425 Float / 4 Volume upper

Data type / Size in bytes

Parameter Description Default value

for totalization.

Behavior of the totaliz‐ ior

alarm limit

warning limit

er during the occur‐

ence of bad input value.

Exceeding this limit

causes an alarm when

volume flow is selected

as input.

Exceeding this limit

causes a warning when

volume flow is selected

as input.

[units] (units register)

Min. floating point value [Sl] (8322)

0.0 [Sl] (8322)

[units] (units register)

Max. floating point value [m3] (8421)

Value range / Setting options

Read /

- Read /

Value range / Setting options

● 0: Cut-off filtered mass flow

● 1: Cut-off filtered volume flow

● 4: Corrected volume flow

● 5: Fractional flow medium A

● 5: Fractional flow medium B

● 0: RUN; totalization is continued using the bad input value.

● 1: HOLD; totalization is stopped.

● 2: MEMORY; totalization is continued based on the last incoming good value.

Read /

Access level

write

Access level

Read / write

write

FCT030 Modbus (From firmware 4.0)

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Page 77

MODBUS commands

4.10 Modbus holding registers tables

Modbus register

8427 Float / 4 Volume lower

8429 Float / 4 Volume lower

8431 Float / 4 Volume alarm

8406 Float / 4 Mass upper

8408 Float / 4 Mass upper

8410 Float / 4 Mass lower

8412 Float / 4 Mass lower

8414 Float / 4 Mass alarm hys‐

8433 Float / 4 Standard vol‐

8435 Float / 4 Standard vol‐

8437 Float / 4 Standard vol‐