Endres+Hauser CNGmass DCI MODBUS RS485 Operating Instruction

BA00140D/06/EN/13.15

71240745 valid as of version

V 3.06.00 (Device software)

Products Solutions

Operating Instructions

CNGmass DCI

Modbus RS485

Coriolis flowmeter

For fueling with compressed natural gas (CNG)

Services

Products Solutions Services

CNGmass DCI Modbus RS485

Table of contents

1 Safety instructions . . . . . . . . . . . . . . . . . . 4

1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Installation, commissioning and operation . . . . . . 4

1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.5 Notes on safety conventions and icons . . . . . . . . . 5

1.6 Symbols on nameplates . . . . . . . . . . . . . . . . . . . . . . 5

2 Identification . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Certificates and approvals . . . . . . . . . . . . . . . . . . . . 9

2.3 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . 9

3 Incoming acceptance, transport and storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 Incoming acceptance . . . . . . . . . . . . . . . . . . . . . . 10

3.2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Installation . . . . . . . . . . . . . . . . . . . . . . . 11

4.1 Installation conditions . . . . . . . . . . . . . . . . . . . . . 11

4.2 Installation instructions . . . . . . . . . . . . . . . . . . . . 12

4.3 Post-installation check . . . . . . . . . . . . . . . . . . . . . 15

5 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.1 Modbus RS485 cable specifications . . . . . . . . . . 16

5.2 Connecting the remote version . . . . . . . . . . . . . . 17

5.3 Connecting the measuring unit . . . . . . . . . . . . . . 18

5.4 Degree of protection . . . . . . . . . . . . . . . . . . . . . . . 20

5.5 Post-connection check . . . . . . . . . . . . . . . . . . . . . 21

6 Operation. . . . . . . . . . . . . . . . . . . . . . . . . 22

6.1 Quick operation guide . . . . . . . . . . . . . . . . . . . . . 22

6.2 Display and operating elements . . . . . . . . . . . . . 23

6.3 Brief guide to the function matrix . . . . . . . . . . . 26

6.4 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.5 Modbus RS485 communication . . . . . . . . . . . . . 29

6.6 Operating options . . . . . . . . . . . . . . . . . . . . . . . . . 40

6.7 Switching hardware write protection on/off . . . 41

7 Commissioning. . . . . . . . . . . . . . . . . . . . 42

7.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.2 Switching on the measuring device . . . . . . . . . . 42

7.3 Quick Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

7.4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.5 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.6 Memory (HistoROM) . . . . . . . . . . . . . . . . . . . . . . 59

8 Custody transfer measurement . . . . . 60

8.1 Suitability for custody transfer measurement, approval by the Standards Authorities, repeated calibration due to legal metrology controls . . . . 60

8.2 Definition of terms . . . . . . . . . . . . . . . . . . . . . . . . . 61

8.3 Verification process . . . . . . . . . . . . . . . . . . . . . . . . 62

9 Maintenance . . . . . . . . . . . . . . . . . . . . . 65

9.1 External cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 65

10 Accessories. . . . . . . . . . . . . . . . . . . . . . . 66

10.1 Device-specific accessories . . . . . . . . . . . . . . . . . . 66

10.2 Service-specific accessories . . . . . . . . . . . . . . . . . . 66

10.3 System components . . . . . . . . . . . . . . . . . . . . . . . . 67

11 Troubleshooting . . . . . . . . . . . . . . . . . . 68

11.1 Troubleshooting instructions . . . . . . . . . . . . . . . . 68

11.2 System error messages . . . . . . . . . . . . . . . . . . . . . 69

11.3 Process error messages . . . . . . . . . . . . . . . . . . . . . 74

11.4 Process errors without messages . . . . . . . . . . . . . 75

11.5 Response of outputs to errors . . . . . . . . . . . . . . . . 76

11.6 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

11.7 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

11.8 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

11.9 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

12 Technical data . . . . . . . . . . . . . . . . . . . . 85

12.1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

12.2 Function and system design . . . . . . . . . . . . . . . . . 85

12.3 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

12.4 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

12.5 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

12.6 Performance characteristics . . . . . . . . . . . . . . . . . 87

12.7 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

12.8 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

12.9 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

12.10 Mechanical construction . . . . . . . . . . . . . . . . . . . . 90

12.11 Operability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

12.12 Certificates and approvals . . . . . . . . . . . . . . . . . . . 91

12.13 Accessories/spare parts . . . . . . . . . . . . . . . . . . . . . 92

12.14 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Endress+Hauser 3

Safety instructions CNGmass DCI Modbus RS485

1 Safety instructions

1.1

Designated use

The measuring device described in these operating instructions may be used for measuring the mass or volume flow measurement of Compressed Natural Gas (CNG).

Resulting from incorrect use or from use other than that designated the operational safety of the measuring devices can be suspended. The manufacturer accepts no liability for damages being produced from this.

1.2

Installation, commissioning and operation

Note the following points:

• Installation, connection to the electricity supply, commissioning and maintenance of the measuring device must be carried out by trained, qualified specialists authorized to perform such work by the facility's owner-operator. The specialist must have read and understood these Operating Instructions and must follow the instructions they contain.

• The device must be operated by persons authorized and trained by the facility's owneroperator. Strict compliance with the instructions in the Operating Instructions is mandatory.

• The CNGmass DCI is a device for measuring gas under high pressure. Therefore, professional design of the system and proper installation of all pressure-bearing parts is of vital importance for long-term safe operation.

• Endress+Hauser will be happy to assist in clarifying the corrosion resistance properties of materials wetted by special fluids, including fluids used for cleaning. However, small changes of temperature, concentration or degree of contamination in the process can result in differences in corrosion resistance. Therefore, Endress+Hauser provides no warranty and assumes no liability with regard to corrosion resistance of fluid wetted materials in any given application. The user is responsible for choosing suitable fluid wetted materials in the process.

• The installer must ensure that the measuring system is correctly wired in accordance with the wiring diagrams.

• Invariably, local regulations governing the maintenance and repair of electrical devices apply.

1.3

Operational safety


• Measuring systems for use in hazardous environments are accompanied by separate "Ex documentation", which is an integral part of these Operating Instructions. Strict compliance with the installation instructions and ratings as stated in this supplementary documentation is mandatory. The symbol on the front of this supplementary

Ex documentation indicates the approval and the inspection body ( 0 Europe, NEC/CEC 1)

NEPSI).

• The housing of the sensor is equipped with a rupture disk to prevent the pressure in the

, sensor housing from increasing in the event of an error. As long as the adhesive label ( →

 7) is intact, the rupture disk is also intact.

• The measuring device complies with the general safety requirements in accordance with

EN 61010, the EMC requirements of IEC/EN 61326, and NAMUR recommendation

NE 21.

• The manufacturer reserves the right to modify technical data without prior notice. Your

Endress+Hauser distributor will supply you with current information and any updates to these Operating Instructions.

1) NEC (National Electrical Code) / CEC (Canadian Electrical Code)

4 Endress+Hauser

CNGmass DCI Modbus RS485 Safety instructions

• Danger - hot surfaces. Hot fluids passing through the measuring tube increase the surface temperature of the sensor housing. Temperatures close to the fluid temperature must be expected. If fluid temperatures are high, take suitable measures to protect against scalding from the hot surfaces.

1.4

Return

• Do not return a measuring device if you are not absolutely certain that all traces of hazardous substances have been removed, e.g. substances which have penetrated crevices or diffused through plastic.

• Costs incurred for waste disposal and injury (burns, etc.) due to inadequate cleaning will be charged to the owner-operator.

• Please note the measures on

→  84

1.5

Notes on safety conventions and icons

The devices are designed to meet state-of-the-art safety requirements, have been tested, and left the factory in a condition in which they are safe to operate. The devices comply with the applicable standards and regulations in accordance with EN 61010 "Safety requirements for electrical equipment for measurement, control and laboratory use". They can, however, be a source of danger if used incorrectly or for other than the designated use.

Consequently, always pay particular attention to the safety instructions indicated in these

Operating Instructions by the following icons:

#

Warning!

"Warning" indicates an action or procedure which, if not performed correctly, can result in injury or a safety hazard. Comply strictly with the instructions and proceed with care.

"

Caution!

"Caution" indicates an action or procedure which, if not performed correctly, can result in incorrect operation or destruction of the measuring device. Comply strictly with the instructions.

!

Note!

"Note" indicates an action or procedure which, if not performed correctly, can have an indirect effect on operation or trigger an unexpected response on the part of the device.

1.6

Symbols on nameplates

The following symbol appears on nameplates (refer to the corresponding documentation):

In the case of devices for potentially explosive atmospheres, a documentation code appears, representing supplementary Ex documentation that it is mandatory to read.

Endress+Hauser 5

Identification CNGmass DCI Modbus RS485

2 Identification

The following options are available for identification of the measuring device:

• Nameplate specifications.

• Order code with breakdown of the device features on the delivery note.

• Enter serial numbers from nameplates in W@M Device Viewer

( www.endress.com/deviceviewer ): All information about the measuring device is displayed.

For an overview of the scope of the Technical Documentation provided, refer to the following:

• The chapters "Documentation" →  92.

• The W@M Device Viewer : Enter the serial number from the nameplate

( www.endress.com/deviceviewer ).

Reorder

The measuring device is reordered using the order code.

Extended order code:

• The device type (product root) and basic specifications (mandatory features) are always listed.

• Of the optional specifications (optional features), only the safety and approval-related specifications are listed (e.g. LA). If other optional specifications are also ordered, these are indicated collectively using the # placeholder symbol (e.g. #LA#).

• If the ordered optional specifications do not include any safety and approval-related specifications, they are indicated by the + placeholder symbol

(e.g. 8DF**-AACCCAAD2S1+).

2.1

Device designation

The "CNGmass DCI" flow measuring system consists of the following components:

• Transmitter

• Sensor

Two versions are available:

• Compact version: transmitter and sensor form a single mechanical unit.

• Remote version: transmitter and sensor are installed separately.

6 Endress+Hauser


2.1.1

Nameplate of the transmitter

Identification

1

2

3

4

4153 Reinach

CNGmass DCI

Order Code:

Ser.No.:

Ident No.:

Switzerland

XXXXXXXXXXXX

50-60Hz

MODBUS RS485,

RELAY, RELAY

STATUS-IN

2009

15VA/W

IP67 / NEMA/Type 4X 6

5

-40°C<Tamb<+60°C

-40°F<Tamb<140°F i

Ta+ 0°C/ 18 °F

N12895

A0011936

5

6

3

4

Fig. 1:

1

2

Nameplate specifications for the transmitter (example)

Order code/serial number: See the specifications on the order confirmation for the meanings of the individual letters and digits

Power supply/ frequency: 85 to 260 V AC/ 50 to 60 Hz

Power consumption: 15 VA / 15 W

Available inputs / outputs

Reserved for information on special products

Ambient temperature range

Degree of protection

2.1.2

Nameplate of the sensor

Endress+Hauser

4153 Reinach Switzerland

1a

2

3

4

5

6

1

PROMASS FP (CNGmass DCI)

Order Code:

Ser. No.:

Ext. ord. cd.:

8DF15-XXXXXXXXXXXX

12345678901

8DF15-XXXXXXXXXXXX+#**#

2009

K-factor:

DN 15 - G3/4”

Materials:

1.0000 / -5 pnom =

5P-CAL

350bar / 5080psi (gauge)

1.4435 / 316L

TM: -50°C ... +150°C / -58°F ... +302°F

IP67 / NEMA/Type4X

11

10

9

7 -40°C (-40°F) < Tamb <+60°C (140°F) i

8

N12895

A0011590

Fig. 2:

6

7

4

5

2

3

1

1a

8

9

10

11

Nameplate specifications for the sensor (example)

Order code/serial number: See the specifications on the order confirmation for the meanings of the individual letters and digits

Extended order code

Calibration factor

Flange nominal diameter

Material

Max. fluid temperature

Reserved for information on special products

Ambient temperature range

Reserved for additional information on device version (approvals, certificates)

Degree of protection

Nominal pressure: 350 bar

Additional information: with 5-point calibration

7

Identification

8


2.1.3

Additional nameplate for suitability for custody transfer measurement

1

2

CNGmass DCI DN15

Environment class: B,C

Minimum Measured Quantity: 1.0 kg

Qmin = 0.8 kg/h

Qmax = 80 kg/h

X.XXX

09.XX

3

A0011591-en

1

2

3

Ambient classes

Measured quantities

Symbol for custody transfer consisting of the number and issue date

2.1.4

Nameplate for connections

1

4

5

8

9

6

7

See operating manual

Betriebsanleitung beachten

Observer manuel d'instruction

Ser.No.:

XXXXXXXXXXX

Supply /

Versorgung /

Tension d'alimentation

26 = B (RxD/TxD-P)

27 = A (RxD/TxD-N)

A:

P:

NO:

NC: active passive normally open contact normally closed contact

1 2

L1/L+

N/L-

PE

MODBUS RS485

3…30VDC, Ri = 3 kOhm

STATUS-IN max. 60VDC/0.1A

max. 30VAC/0.5A

max. 60VDC/0.1A

max. 30VAC/0.5A

RELAY

RELAY

Ex works / ab Werk / réglages usine

Device SW: XX.XX.XX

Communication:

(WEA)

XXXXXXXXXXXXXXXX

Drivers:

Date: 01. MAI 2009

Update 1

319475-00XX

NC

Update 2

NO

X

X

10

3

4

1

2

5

8

9

6

7

10

Serial number

Possible configuration of current output

Possible configuration of relay contacts

Terminal assignment, cable for power supply: 85 to 260 V AC, 20 to 55 V AC, 16 to 62 V DC

– Terminal No. 1 : L1 for AC, L+ for DC

– Terminal No. 2 : N for AC, L- for DC

Signals present at inputs and outputs, possible configuration and terminal assignment (20 to 27),

→ also "Electrical values of inputs/outputs"

→  85

Version of device software currently installed (incl. language group)

Installed communication type

Information on current communication software (Device Revision and Device Description)

Date of installation

Current updates to data specified in points 6 to 9

2

3

A0004362

Endress+Hauser

CNGmass DCI Modbus RS485 Identification

2.2

Certificates and approvals

The devices are designed in accordance with good engineering practice to meet state-of-theart safety requirements, have been tested, and left the factory in a condition in which they are safe to operate.

The measuring devices comply with the applicable standards and regulations in accordance with EN 61010 -1, "Safety requirements for electrical equipment for measurement, control and laboratory use" and with the EMC requirements of IEC/EN 61326. The measuring system described in these Operating Instructions thus complies with the statutory requirements of the EC Directives. Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.

The measuring system meets the EMC requirements of the Australian Communications and

Media Authority (ACMA).

The measuring device meets all the requirements of the Modbus/TCP conformity and integration test and holds the "Modbus/TCP Conformance Test Policy, Version 2.0". The measuring device has successfully passed all the test procedures carried out and is certified by the "Modbus/TCP Conformance Test Laboratory" of the University of Michigan.

2.3

Registered trademarks

Modbus ®

Registered trademark of the SCHNEIDER AUTOMATION, INC.

Applicator ® , FieldCare ® , HistoROM™, S-DAT ® , T-DAT ®

Registered or registration-pending trademarks of the Endress+Hauser Group

Endress+Hauser 9

Incoming acceptance, transport and storage CNGmass DCI Modbus RS485

3 Incoming acceptance, transport and storage

3.1

Incoming acceptance

On receipt of the goods, check the following points:

• Is the packaging or content damaged?

• Is anything missing from the shipment and does the scope of supply match your order?

3.2

Transport

Comply with the following instructions when unpacking the device and transporting it to its final location:

• Transport the devices in the containers in which they are delivered.

• The covers or caps fitted to the process connections prevent mechanical damage to the sealing faces and the ingress of foreign matter to the measuring tube during transportation and storage. Consequently, do not remove these covers or caps until immediately before installation.

3.3

Storage


• Pack the measuring device in such a way as to protect it reliably against impact for storage

(and transportation). The original packaging provides optimum protection.

• The permitted storage temperature is –40 to +80 °C (–40 to 176 °F).

• Do not remove the protective caps on the process connections until you are ready to install the device.

• The measuring device must be protected against direct sunlight during storage in order to avoid unacceptably high surface temperatures.

10 Endress+Hauser

CNGmass DCI Modbus RS485 Installation

4 Installation

4.1

Installation conditions

The measuring device is to be installed in a de-energized state free from outside loads or strain.

4.1.1

Dimensions

All the dimensions and lengths of the sensor and transmitter are provided in the separate documentation entitled "Technical Information"

→  92.

4.1.2

Inlet and outlet runs

No special precautions need to be taken for fittings which create turbulence (valves, elbows,

T-pieces etc.).

4.1.3

Vibrations

The high oscillation frequency of the measuring tubes ensures that the correct operation of the measuring system is not influenced by pipe vibrations. Consequently, the sensors require no special measures for attachment.

4.1.4

Limiting flow

Limiting flow information can be found in the separate "Technical Information" document, →

 92.

4.1.5

Special installation instructions

Rupture disk

Make sure that the function and operation of the rupture disk is not impeded through the installation of the device. The position of the rupture disk is indicated on a sticker applied over it. If the rupture disk is triggered, the sticker is destroyed. The disk can therefore be visually monitored. For additional information that is relevant to the process (

→  89).

i

Endress+Hauser

Fig. 5: Indication label for the rupture disk

RUPTURE

DISK

A0006920

11

Installation CNGmass DCI Modbus RS485

4.2

Installation instructions

4.2.1

Turning the transmitter housing

Turning the aluminum field housing

#

Warning!

The turning mechanism in devices with EEx d/de or NEC/CEC Cl. I Div. 1 classification is not the same as that described here. The procedure for turning these housings is described in the

Ex-specific documentation.

1. Loosen the two securing screws.

2. Turn the bayonet catch as far as it will go.

3. Carefully lift the transmitter housing as far as it will go.

4. Turn the transmitter housing to the desired position (max. 2 × 90° in either direction).

5. Lower the housing into position and reengage the bayonet catch.

6. Retighten the two securing screws.

4

2

1

3

Fig. 6: Turning the transmitter housing (aluminum field housing)

6

5

A0004302

12 Endress+Hauser


4.2.2

Installing the wall-mount housing

There are various ways of installing the wall-mount housing:

• Mounted directly on the wall

• Installation in control panel (separate mounting set, accessories) →  14

• Pipe mounting (separate mounting set, accessories)

→  14

"

Caution!

• At the mounting location, ensure that the permitted ambient temperature range

(–20 to +60 °C (–4 to +140 °F), optional –40 to +60 °C (–40 to +140 °F)) is not exceeded.

Install the device in a shady location. Avoid direct sunlight.

• Always install the wall-mount housing in such a way that the cable entries are pointing down.

Mounted directly on the wall

1. Drill the holes

→  7.

2. Remove the cover of the connection compartment (a).

3. Push the two securing screws (b) through the appropriate bores (c) in the housing.

– Securing screws (M6): max. Ø 6.5 mm (0.26")

– Screw head: max. Ø 10.5 mm (0.41")

4. Secure the transmitter housing to the wall as indicated.

5. Screw the cover of the connection compartment (a) firmly onto the housing.

35 (1.38) b

90 (3.54) a c

192 (7.56)

Fig. 7: Mounted directly on the wall

A0001130

Endress+Hauser 13

Installation CNGmass DCI Modbus RS485

Installation in control panel

1. Prepare the opening in the panel

→  8.

2. Slide the housing into the opening in the panel from the front.

3. Screw the fasteners onto the wall-mount housing.

4. Screw the threaded rods into the holders and tighten them until the housing is secured on the panel wall. Afterwards, tighten the locking nuts. Additional support is not necessary.

+0.5 (+0.019)

210 (8.27)

–0.5 (–0.019)

+0.5 (+0.019)

–0.5 (–0.019)

245 (9.65)

~110 (~4.33)

A0001131

Fig. 8: Panel installation (wall-mount housing)

Pipe mounting

"

The assembly should be performed by following the instructions in

→  9.

Caution!

If a warm pipe is used for installation, ensure that the housing temperature does not exceed the permitted value of +60 °C (+140 °F).

Ø 20…70

(Ø 0.79…2.75)

14

Fig. 9: Pipe mounting (wall-mount housing)

~ 155 ( ~ 6.1)

A0001132

Endress+Hauser


4.2.3

Turning the local display

1. Unscrew cover of the electronics compartment from the transmitter housing.

2. Press the side latches on the display module and remove the module from the electronics compartment cover plate.

3. Rotate the display to the desired position (max. 4 × 45 ° in both directions), and reset it onto the electronics compartment cover plate.

4. Screw the cover of the electronics compartment firmly back onto the transmitter housing.

4 x 45°

Endress+Hauser

Fig. 10: Turning the local display (field housing)

4.3

Post-installation check

Perform the following checks after installing the measuring device in the pipe:

Device condition and specifications

Is the device damaged (visual inspection)?

Does the device correspond to specifications at the measuring point, including process temperature and pressure, ambient temperature, measuring range etc.?

Installation

Does the arrow on the sensor nameplate match the direction of flow through the pipe?

Are the measuring point number and labeling correct (visual inspection)?

Is the orientation chosen for the sensor correct, in other words suitable for sensor type, fluid properties (outgassing, with entrained solids) and fluid temperature?

Process environment / process conditions

Is the measuring device protected against moisture and direct sunlight?

Notes

–

→  7

Notes

–

–

→  11

Notes

–

A0003236

15

Wiring

16


5

#

Warning!

Wiring

When connecting Ex-certified devices, see the notes and diagrams in the Ex-specific supplement to these Operating Instructions. Please do not hesitate to contact your

Endress+Hauser sales office if you have any questions.

!

Note!

The measuring device does not have an internal disconnecting device. Therefore, assign a switch or circuit breaker to the measuring device with which the voltage supply line can be disconnected from the power system.

5.1

Modbus RS485 cable specifications

In the EIA/TIA-485 standard, two versions (cable type A and B) are specified for the bus line and can be used for all transmission rates. However, we recommend you use cable type A.

The cable specification for cable type A is provided in the following table:

Cable type A

Characteristic impedance

Cable capacitance

Core cross-section

Cable type

Loop-resistance

Signal damping

Shielding

135 to 165 Ω at a measuring frequency of 3 to 20 MHz

< 30 pF/m (< 9.2 pF/ft)

> 0.34 mm ″ (AWG 22)

Twisted pairs

≤ 110 Ω /km ( ≤ 0.034 Ω /ft)

Max. 9 dB over the entire length of the cable cross-section

Copper braided shielding or braided shielding and foil shielding

Note the following points for the bus structure:

• All the measuring devices are connected in a bus structure (line).

• Using cable type A and with a transmission rate of 115200 Baud, the maximum line length (segment length) of the Modbus RS485 system is 1200 m (3936 ft). The total length of the spurs may not exceed a maximum of 6.6 m (21.7 ft) here.

• A maximum of 32 users are permitted per segment.

• Each segment is terminated at either end with a terminating resistor.

• The bus length or the number of users can be increased by introducing a repeater.

5.1.1

Shielding and grounding

When planning the shielding and grounding for a fieldbus system, there are three important points to consider:

• Electromagnetic compatibility (EMC)

• Explosion protection

• Employee safety

To ensure the optimum electromagnetic compatibility of systems, it is important that the system components and above all the cables, which connect the components, are shielded and that no portion of the system is unshielded. Ideally, the cable shields are connected to the normally metal housings of the connected field devices. Since these are generally connected to the protective ground, the shield of the bus cable is grounded many times.

Make sure that the stripped and twisted lengths of cable shield to the terminals are as short as possible. This approach, which provides the best electromagnetic compatibility and employee safety, can be used without restriction in systems with optimum potential equalization. In the case of systems without potential equalization, a mains frequency

(50 Hz) equalizing current can flow between two grounding points which can destroy the cable in unfavorable cases, e.g. when it exceeds the permissible shield current.

Endress+Hauser

CNGmass DCI Modbus RS485 Wiring

To suppress the low frequency equalizing currents on systems without potential equalization, it is therefore recommended to connect the cable shield directly to the building ground (or protective ground) at one end only and to use capacitive coupling to connect all other grounding points.

"

Caution!

The legal EMC requirements are fulfilled only when the cable shield is grounded on both sides.

5.2

Connecting the remote version

5.2.1

Connecting cable for sensor/transmitter

#

Warning!

• Risk of electric shock. Switch off the power supply before opening the device. Do not install or wire the device while it is connected to the power supply. Failure to comply with this precaution can result in irreparable damage to the electronics.

• Risk of electric shock. Connect the protective ground to the ground terminal on the housing before the power supply is applied.

• You may only connect the sensor to the transmitter with the same serial number.

Communication errors can occur if this is not observed when connecting the devices.

1. Remove the cover (d) from the connection compartment or sensor housing.

2. Feed the connecting cable (e) through the appropriate cable runs.

3. Establish the wiring between the sensor and transmitter in accordance with the wiring

diagram ( →  11 or wiring layout in the screw cap).

4. Seal the connection compartment or the transmitter housing again.

a b

S1 S1 S2 S2 GND TM TM TT TT

+ + + +

4 5 6 7 8 9 10 11 12 41 42 d d d e c

4 5 6 7 8 9 10 11 12

+ + + +

S1 S1 S2 S2 GND TM TM TT TT

Fig. 11: Connecting the remote version c d a b e

Transmitter wall-mount housing: non-hazardous area

Transmitter wall-mount housing: ATEX II2G / Zone 1 / NEC/CEC

Sensor connection housing

Cover of connection compartment or connection housing

Connecting cable

→ separate Ex documentation

Terminal No.: 4/5 = gray; 6/7 = green; 8 = yellow; 9/10 = pink; 1¹ ⁄ ₁₂ = white; 41/42 = brown

41 42

A0003681

Endress+Hauser 17

Wiring CNGmass DCI Modbus RS485

5.2.2

Cable specification, connecting cable

The specifications of the cable connecting the transmitter and the sensor of the remote version are as follows:

• 6 × 0.38 mm 2 (20 AWG) PVC cable with common shield and individually shielded cores

• Conductor resistance: ≤ 50 Ω /km ( ≤ 0.015 Ω /ft)

• Capacitance core/shield: ≤ 140 pF/m ( ≤ 42.7 pF/ft)

• Cable length: max. 20 m (65.6 ft)

• Permanent operating temperature: max. +105 °C (+221 °F)

!

Note!

The cable must be installed securely, to prevent movement.

5.3

Connecting the measuring unit

5.3.1

Transmitter connection

#

Warning!

• Risk of electric shock. Switch off the power supply before opening the device. Do not install or wire the device while it is connected to the power supply. Failure to comply with this precaution can result in irreparable damage to the electronics.

• Risk of electric shock. Connect the protective ground to the ground terminal on the housing before the power supply is applied unless special protection measures have been taken (e. g. galvanically isolated power supply SELV or PELV).

• Compare the specifications on the nameplate with the local supply voltage and frequency.

The national regulations governing the installation of electrical equipment also apply.

1. Remove the cover of the connection compartment (a) from the transmitter housing.

2. Feed the power supply cable (b), signal cable (g) and fieldbus cable (d) through the appropriate cable entries.

3. Perform wiring in accordance with the respective terminal assignment and the associated wiring diagram.

" Caution!

– Risk of damaging the fieldbus cable. Observe the information about shielding and grounding the fieldbus cable (

→  16).

– We recommend that the fieldbus cable not be looped using conventional cable glands.

If even just one measuring device is subsequently replaced, the bus communication will have to be interrupted.

4. Screw the cover of the connection compartment (a) firmly onto the transmitter housing.

18 Endress+Hauser


Endress+Hauser

Wiring d g b

A

C a d g b

B

N (L–)

L1 (L+) a

1 2 b g d

+ – + –

20 21 2223

+ –

2425 26 27

B (RxD/TxD-P)

A (RxD/TxD-N) f

A (RxD/TxD-N)

B (RxD/TxD-P) f

–

+

–

+

–

+

27

26

25

24

23

22

21

20

N (L-)

L1 (L+)

2

1 g c b d e b c g e d c d f g a b

Fig. 12:

A

C

Connecting the transmitter, cable cross-section: max. 2.5 mm² (14 AWG)

View A (field housing)

View C (wall-mount housing)

Connection compartment cover

Cable for power supply: 85 to 260 V AC, 20 to 55 V AC, 16 to 62 V DC

– Terminal No. 1: L1 for AC, L+ for DC

– Terminal No. 2: N for AC, L- for DC

Ground terminal for protective ground

Fieldbus cable

– Terminal No. 26: B (RxD/TxD-P)

– Terminal No. 27: A (RxD/TxD-N)

Ground terminal for signal cable shield/fieldbus cable shield Observe the following:

– the shielding and grounding of the fieldbus cable

→  16

– that the stripped and twisted lengths of cable shield to the ground terminal are as short as possible

Service adapter for connecting service interface 193 (FieldCare)

Signal cable: terminal assignment

→  19

5.3.2

Terminal assignment

Electrical values for inputs →  85.

Electrical values for outputs

→  85.

Order characteristic for

"inputs/outputs"

Terminal No. (inputs/outputs)

20 (+) / 21 (-) 22 (+) / 23 (-)

Fixed communication boards (permanent assignment)

Q – –

Flexible communication boards

N Current output

7 Relay output 2

Frequency output

Relay output 1

24 (+) / 25 (-)

Status input

Status input

Status input

26 (+) / 27 (–)

Modbus RS485

Modbus RS485

Modbus RS485

A0002591

19

Wiring CNGmass DCI Modbus RS485

5.4

Degree of protection

The measuring device fulfills all the requirements for IP 67.

Compliance with the following points is mandatory following installation in the field or servicing, in order to ensure that IP 67 protection is maintained:

• The housing seals must be clean and undamaged when inserted into their grooves. The seals must be dried, cleaned or replaced if necessary.

• The screws and screw covers must be firmly tightened.

• The cables used for connection must be of the specified outside diameter →  86, Cable

entries.

• The cable entries must be firmly tightened (point a

→  13).

• The cable must loop down in front of the cable entry ("water trap") (point b

→  13). This

arrangement prevents moisture penetrating the entry.

!

Note!

The cable entries may not point up.

b a

Fig. 13: Installation instructions, cable entries

"

• Remove all unused cable entries and insert plugs instead.

• Do not remove the grommet from the cable entry.

Caution!

Do not loosen the screws of the sensor housing, as otherwise the degree of protection guaranteed by Endress+Hauser no longer applies.

A0001914

20 Endress+Hauser

CNGmass DCI Modbus RS485 Wiring

5.5

Post-connection check

Perform the following checks after completing electrical installation of the measuring device:

Device condition and specifications

Are cables or the device damaged (visual inspection)?

Electrical connection

Does the supply voltage match the specifications on the nameplate?

Do the cables comply with the specifications?

Do the cables have adequate strain relief?

Is the cable type route completely isolated?

Without loops and crossovers?

Are the power supply and signal cables correctly connected?

Notes

–

Notes

85 to 260 V AC (45 to 65 Hz)

20 to 55 V AC (45 to 65 Hz)

16 to 62 V DC

→

–

–

 18

Are all screw terminals firmly tightened?

Are all cable entries installed, firmly tightened and correctly sealed?

Cables looped as "water traps"?

Are all housing covers installed and firmly tightened?

Fieldbus electrical connection

Has each fieldbus segment been terminated at both ends with a bus terminator?

Has the max. length of the fieldbus cable been observed in accordance with the specifications?

Has the max. length of the spurs been observed in accordance with the specifications?

Is the fieldbus cable fully shielded and correctly grounded?

→ Wiring diagram inside the cover of the terminal compartment

–

→  20, "Degree of

protection" section

–

Notes

→  54

→  16

→  16

→  16

Endress+Hauser 21

Operation CNGmass DCI Modbus RS485

6 Operation

6.1

Quick operation guide

You have a number of options for configuring and commissioning the device:

1.

Local display (option)

→  23

The local display enables you to read all important variables directly at the measuring point, configure bus-specific and device-specific parameters in the field and perform commissioning.

2.

Operating program →  40

Operation via:

– FieldCare

The Proline flowmeters are accessed via the service interface or via the service interface

FXA193.

3.

Jumpers/miniature switches for hardware settings

You can make the following hardware settings using a jumper or miniature switches on the I/O board:

– Address mode configuration (select software or hardware addressing) →  53

– Device bus address configuration (for hardware addressing)

→  53

– Hardware write protection enabling/disabling

→  41

!

Note!

A description of the configuration of the current output (active/passive) and the relay output

(NC contact/NO contact) can be found in the "Configuration" section

→  53.

2

FXA193

-

Esc

+ E

-

Esc

+ E

1

XXX.XXX.XX

-

Esc

+

E

3

22

A0004397

Fig. 14:

1

2

3

Methods of operating Modbus RS485 devices

Local display for device operation in the field (option)

Configuration/operating program for operating via the service interface FXA193 (FieldCare)

Jumper/miniature switches for hardware settings (write protection, device address, address mode)

Endress+Hauser

CNGmass DCI Modbus RS485 Operation

6.2

Display and operating elements

The local display enables you to read all important parameters directly at the measuring point and configure the device using the "Quick Setup" or the function matrix.

The display consists of four lines; this is where measured values and/or status variables

(direction of flow, empty pipe, bar graph etc.) are displayed. You can change the assignment of display lines to di ff erent variables to suit your needs and preferences ( → "Description of

Device Parameters" manual, GP00003D/06).

1 v

S

3 v

+24.502

+1863.97

–50 +50 x y x y

%

-

Esc

+ E

2

3 4

A0001172

2

3

4

Fig. 15:

1

Display and operating elements

Liquid crystal display

The backlit, four-line liquid crystal display shows measured values, dialog texts, fault messages and notice messages. HOME position (operating mode) is the term given to the display during normal operation.

Readings displayed

Optical sensors for "Touch Control"

Plus/minus keys

– HOME position → Direct access to totalizer values and actual values of inputs/outputs

– Enter numerical values, select parameters

– Select different blocks, groups and function groups within the function matrix

Press the +/- keys (

– Exit the function matrix step by step

– Press and hold the

) simultaneously to trigger the following functions:

Q

→ HOME position

keys for longer than 3 seconds → Return directly to home position

– Cancel data entry

Enter key

– HOME position → Entry into the function matrix

– Save the numerical values you input or settings you change

Endress+Hauser 23


6.2.1

Readings displayed (operation mode)

The display area consists of three lines in all; this is where measured values are displayed, and/or status variables (direction of flow, bar graph etc.). You can change the assignment of display lines to di ff erent variables to suit your needs and preferences ( → "Description of

Device Parameters" manual).

Multiplex mode

A maximum of two different display variables can be assigned to each line. Variables multiplexed in this way alternate every 10 seconds on the display.

Error messages

Display and presentation of system/process errors →  28

4 5 6 v

S

3 v

+24.502

+1863.97

–50 +50 x x y y

%

1

2

3

A0001173

5

6

Fig. 16:

1

2

3

4

Typical display for normal operating mode (HOME position)

Main display line: shows primary measured values, e.g. mass flow in [kg/h]

Additional line: shows measured variables and status variables, e.g. totalizer No. 3 in [t]

Information line: shows additional information on the measured variables and status variables, e.g. bar graph display of the full scale value achieved by the mass flow

"Info icons" field: icons representing additional information on the measured values are shown in this field. For a full list of the icons and their meanings see

→  25

"Measured values" field: the current measured values appear in this field

"Unit of measure" field: the units of measure and time defined for the current measured values appear in this field

6.2.2

Additional display functions

From HOME position, use the information:

Q keys to open an "Info Menu" containing the following

• Totalizer (including overflow)

• Actual values or states of the configured inputs/outputs

• Device TAG number (user-definable)

P → Scan of individual values within the Info Menu

X (Esc key) → Back to HOME position

24 Endress+Hauser


6.2.3

Icons

The icons which appear in the field on the left make it easier to read and recognize measured variables, device status, and error messages.

$

Icon

S

Meaning

System error

!

Icon

P

Meaning

Process error

| 1 to n

Fault message

(with effect on outputs)

Current output 1 to n P 1 to n

Notice message

(without effect on outputs)

Pulse output 1 to n

S 1 to n Status/relay output 1 to n

(or status input)

F 1 to n

Σ 1 to n

Frequency output

Totalizer 1 to n

A0001181

A0001183

Measuring mode;

PULSATING FLOW

Measuring mode;

STANDARD

A0001185

Counting mode, totalizer; forward

A0001182

A0001184

A0001186

Measuring mode;

SYMMETRY (bidirectional)

Counting mode, totalizer;

BALANCE (forward and reverse flow)

Counting mode, totalizer; reverse

A0001187 Status input Volume flow

A0001188

A0001200

Fluid density Reference density

A0001208

A0001207

Medium temperature

A0001206

Modbus communication active

Endress+Hauser 25


6.3

Brief guide to the function matrix

!

Note!

• See the general notes →  27

• Function descriptions → see the "Description of Device Parameters" manual

1. HOME position →→ Entry into the function matrix.

2. Select a block (e.g. OUTPUTS).

3. Select a group (e.g. CURRENT OUTPUT 1).

4. Select a function group (e.g. SETTINGS).

5. Select a function (e.g. TIME CONSTANT).

Change parameter / enter numerical values:

P → Select or enter enable code, parameters, numerical values

→ Save your entries

6. Exit the function matrix:

– Press and hold down Esc key (

– Repeatedly press Esc key (

X ) for longer than 3 seconds → HOME position.

X ) → Return step by step to HOME position.

-

Esc

+ E

–

Esc

+

6.

–

Esc

+

> 3 s

1.

E

E

– +

3.

E

– +

4.

E

– +

5.

E

+

–

+

–

E E E

2.

+

–

E

E

E

E

Fig. 17: Selecting functions and configuring parameters (function matrix)

A0001210

26 Endress+Hauser


6.3.1

General notes

The Quick Setup menu contains the default settings that are adequate for commissioning.

Complex measuring operations on the other hand necessitate additional functions that you can configure as necessary and customize to suit your process parameters. The function matrix, therefore, comprises a multiplicity of additional functions which, for the sake of clarity, are arranged on a number of menu levels (blocks, groups, and function groups).

Comply with the following instructions when configuring functions:

• You select functions as described already

→  26. Each cell in the function matrix is

identified by a numerical or letter code on the display.

• You can switch off certain functions (OFF). If you do so, related functions in other function groups will no longer be displayed.

• Certain functions prompt you to confirm your data entries. Press P to select "SURE [ YES ]" and press F to confirm. This saves your setting or starts a function, as applicable.

• Return to the HOME position is automatic if no key is pressed for 5 minutes.

• Programming mode is disabled automatically if a key is not pressed within 60 seconds following automatic return to the HOME position.

"

Caution!

All functions are described in detail, as is the function matrix itself, in the "Description of

Device Parameters" manual which is a separate part of these Operating Instructions.

!

Note!

• The transmitter continues to measure while data entry is in progress, i.e. the current measured values are output via the signal outputs in the normal way.

• If the supply voltage fails all preset and parameterized values remain safely stored in the

EEPROM.

6.3.2

Enabling the programming mode

The function matrix can be disabled. Disabling the function matrix rules out the possibility of inadvertent changes to device functions, numerical values or factory settings. A numerical code (factory setting = 84) has to be entered before settings can be changed.

If you use a code number of your choice, you exclude the possibility of unauthorized persons accessing data ( → "Description of Device Parameters" manual).

Comply with the following instructions when entering codes:

• If programming is disabled and the P operating elements are pressed in any function, a prompt for the code automatically appears on the display.

• If "0" is entered as the customer's code, programming is always enabled.

• Your Endress+Hauser representative can be of assistance if you mislay your personal code.

"

Caution!

Changing certain parameters such as all sensor characteristics, for example, influences numerous functions of the entire measuring system, particularly measuring accuracy.

There is no need to change these parameters under normal circumstances and consequently, they are protected by a special code known only to Endress+Hauser representatives.

Please contact Endress+Hauser if you have any questions.

6.3.3

Disabling the programming mode

Programming mode is disabled if you do not press an operating element within 60 seconds following automatic return to the HOME position.

Programming can also be disabled by entering any number (other than the customer's code) in the "ACCESS CODE" function.

Endress+Hauser 27

28


6.4

Error messages

6.4.1

Type of error

Errors that occur during commissioning or measuring are displayed immediately. If two or more system or process errors occur, the error with the highest priority is the one shown on the display.

The measuring system distinguishes between two types of error:

• System error

This group comprises all device errors, e.g. communication errors, hardware errors etc.

→

 69

• Process error

This group includes all application errors, e.g. fluid not homogeneous etc.

→  74

1

P

+ 24 .

502

XXXXXXXXXX

#

000 00

:

00

:

05

3 2 4 5

Fig. 18:

3

4

1

2

5

Error messages on the display (example)

Error type: P = process error, S = system error

Error message type:

$

= Fault message, ! = Notice message

Error designation: e.g. FLUID INHOM. = fluid is not homogeneous

Error number: e.g. #702

Duration of most recent error occurrence (in hours, minutes and seconds)

A0001211

6.4.2

Error message type

The measuring device always assigns system and process errors which occur to two types of error messages ( fault or notice messages ), resulting in different weightings.

Serious system errors, e.g. module defects, are always identified and classed as "fault messages" by the measuring device.

Notice message (!)

• The error in question has no effect on the current operating mode and on the outputs of the measuring device.

• Displayed as → Exclamation mark (!), type of error (S: system error, P: process error)

Fault message ( $ )

• The error in question interrupts or stops running operation and has a direct effect on the outputs. The response of the outputs (failsafe mode) can be defined by means of functions in the function matrix.

• Displayed as → Lightning fl ash ( $ ), type of error (S: system error, P: process error)

!

Note!

• Error conditions can be output via the relay outputs or fieldbus communication.

• If an error message occurs, an upper or lower signal level for the breakdown information according to NAMUR recommendation NE 43 can be output via the current output.

Endress+Hauser


6.4.3

Confirming error messages

For the sake of plant and process safety, the measuring device can be configured in such a way that fault messages displayed ( $ ) always have to be rectified and acknowledged locally by pressing  . Only then do the error messages disappear from the display. This option can be switched on or o ff by means of the "ACKNOWLEDGE FAULT MESSAGES" function ( →

"Description of Device Parameters" manual).

!

Note!

• Fault messages ( $ ) can also be reset and confirmed via the status input.

• Notice messages (!) do not require acknowle dgment. Note, however, that they remain visible until the cause of the error has been rectified.

6.5

Modbus RS485 communication

6.5.1

Modbus RS485 technology

The Modbus is an open, standardized fieldbus system which is deployed in the areas of manufacturing automation, process automation and building automation.

System architecture

The Modbus RS485 is used to specify the functional characteristics of a serial fieldbus system with which distributed, digital automation systems are networked together.

The Modbus RS485 distinguishes between master and slave devices.

• Master devices

Master devices determine the data traffic on the fieldbus system. They can send data without an external request.

• Slave devices

Slave devices, like this measuring device, are peripheral devices. They do not have their own access rights to the data traffic of the fieldbus system and only send their data due to an external request from a master.

Endress+Hauser

1

2

Fig. 19:

1

2

3

Modbus RS485 system architecture

Modbus master (PLC etc.)

Modbus RS485

Modbus slave (measuring devices etc.)

3 3 3 3

A0004398

29

Operation

30


Master/slave communication

A distinction is made between two methods of communication with regard to master/slave communication via Modbus RS485:

• Polling (request-response-transaction)

The master sends a request telegram to one slave and waits for the slave's response telegram. Here, the slave is contacted directly due to its unique bus address (1 to 247).

a b

1

2

3

Fig. 20:

3 a

1

2 b

Modbus RS485 polling data traffic


Modbus RS485


Request telegram to this one specific Modbus slave

Response telegram to the Modbus master

3 3 3

A0004401

• Broadcast message

By means of the global address 0 (broadcast address), the master sends a command to all the slaves in the fieldbus system. The slaves execute the command without reporting back to the master. Broadcast messages are only permitted in conjunction with write function codes.

a a a

1

2

3 3 3 3

Fig. 21:

3 a

1

2

Modbus RS485 polling data traffic


Modbus RS485


Broadcast message - command to all Modbus slaves (request is executed without a response telegram to the master)

A0004402

Endress+Hauser


6.5.2

Modbus telegram

General

The master-slave process is used for data exchange. Only the master can initiate data transmission. Following the prompt, the slave sends the master the necessary data as a response telegram or executes the command requested by the master.

Telegram structure

The data is transferred between the master and slave by means of a telegram.

A request telegram from the master contains the following telegram fields:

Telegram structure:

Slave address Function code Data Check sum

• Slave address

The slave address can be in an address range from 1 to 247.

The master talks to all the slaves simultaneously by means of the slave address 0

(broadcast message).

• Function code

The function code determines which read, write and test operations should be executed by means of the Modbus protocol.

Function codes supported by the measuring device

→  32

• Data

Depending on the function code, the following values are transmitted in this data field:

– Register start address (from which the data are transmitted)

– Number of registers

– Write/read data

– Data length

– etc.

• Check sum (CRC or LRC check)

The telegram check sum forms the end of the telegram.

The master can send another telegram to the slave as soon as it has received an answer to the previous telegram or once the time-out period set at the master has expired. This timeout period can be specified or modified by the user and depends on the slave response time.

If an error occurs during data transfer or if the slave cannot execute the command from the master, the slave returns an error telegram (exception response) to the master.

The slave response telegram consists of telegram fields which contain the requested data or which confirm that the action requested by the master has been executed. It also contains a check sum.

Endress+Hauser 31

Operation

32


6.5.3

Modbus function codes

The function code determines which read, write and test operations should be executed by means of the Modbus protocol. The measuring device supports the following function codes:

Function code

03

04

06

08

16

23

Name in accordance with Modbus specification

READ HOLDING

REGISTER

READ INPUT REGISTER

WRITE SINGLE

REGISTERS

DIAGNOSTICS

WRITE MULTIPLE

REGISTERS

READ/WRITE

MULTIPLE REGISTERS

Description

Reads one or more registers of the Modbus slave.

1 to a maximum of 125 consecutive registers

(1 register = 2 byte) can be read with a telegram.

Application:

For reading measuring device parameters with read and write access, such as reading the batch quantity.

Reads one or more registers of the Modbus slave.

1 to a maximum of 125 consecutive registers

(1 register = 2 byte) can be read with a telegram.

Application:

For reading measuring device parameters with read access, such as reading the measured values (mass flow, temperature etc.).

Writes a single slave register with a new value.

Application:

For writing just one measuring device parameter, such as writing the batch quantity or resetting the totalizer.

!

Note!

Function code 16 is used for writing several registers by means of just one telegram.

Checks the communication connection between the master and slave. The following diagnostics codes are supported:

• Sub-function 00 = Return query data (loopback test)

• Sub-function 02 = Return diagnostics register

Writes several slave registers with a new value.

A maximum of 120 consecutive registers can be written with a telegram.

Application:

For writing several measuring device parameters, such as writing the batch quantity and resetting the totalizer.

Simultaneous reading and writing of 1 to max. 118 registers in a telegram. Write access is executed before read access.

Application:

For writing and reading several measuring device parameters, such as writing the batch quantity and the correction quantity and reading the totalizer value.

!

Note!

• Broadcast messages are only permitted with function codes 06, 16 and 23.

• The measuring device does not differentiate between function codes 03 and 04. These codes have the same result.

6.5.4

Maximum number of writes

If a nonvolatile device parameter is modified via the Modbus function codes 06, 16 or 23, this change is saved in the EEPROM of the measuring device.

The number of writes to the EEPROM is technically restricted to a maximum of 1 million.

Attention must be paid to this limit since, if exceeded, it results in data loss and measuring device failure. For this reason, avoid constantly writing nonvolatile device parameters via the

Modbus.

Endress+Hauser


6.5.5

Modbus register addresses

Each device parameter has its own register address. The Modbus master uses this register address to talk to the individual device parameters and access the device data.

The register addresses of the individual device parameters can be found in the "Description of Device Parameters" manual under the parameter description in question.

1 2

MASS FLOW 0000

Modbus register:

Data type:

Access:

2007

Float read

The currently measured mass flow appears on the display.

Display:

5-digit floating-point number, including unit and sign

(e.g. 462,87 kg/h; –731,63 lb/min; etc.)

3

Fig. 22:

1

2

3

Example of how a function description is illustrated in the "Description of Device Parameters" manual

Name of the function

Number of the function (appears on the local display; is not identical to the Modbus register address)

Information on communication via Modbus RS485

– Modbus register (information in decimal numerical format)

– Data type: Float, Integer or String

– Possible ways of accessing the function: read = read access via function codes 03, 04 or 23 write = write access via function codes 06, 16 or 23

A0004405-en

Modbus register address model

The Modbus RS485 register addresses of the measuring device are implemented in accordance with "Modbus Applications Protocol Specification V1.1".

!

Note!

In addition to the specification mentioned above, systems are also deployed which work with a register address model in accordance with the "Modicon Modbus Protocol Reference Guide

(PI-MBUS-300 Rev. J)" specification. With this specification, the register address is extended, depending on the function code used. A "3" is put in front of the register address in the "read" access mode and a "4" in the "write" access mode.

Function code

Access type

03

04

23

06

16

23

Read

Write

Register in accordance with:

"Modbus Applications Protocol

Specification"

XXXX

Example: mass flow = 2007

XXXX

Example: reset totalizer = 6401

Register in accordance with:

"Modicon Modbus Protocol

Reference Guide"

→ 3XXXX

Example: mass flow = 32007

→ 4XXXX

Example: reset totalizer = 46401

Response times

The time it takes a measuring device to respond to a request telegram from the Modbus master is typically 25 to 50 ms. If faster response times are needed for time-critical applications (e.g. batching applications), the "auto-scan buffer" is to be used.

!

Note!

It may take longer for a command to be executed in the device. The data is not updated until the command has been executed. Especially write commands are affected by this.

Endress+Hauser 33

Operation

34


Data types

The following data types are supported by the measuring device:

• FLOAT (floating-point numbers IEEE 754)

Data length = 4 bytes (2 registers)

Byte 3

SEEEEEEE

S = sign

E = exponent

M = mantissa

Byte 2

EMMMMMMM

Byte 1

MMMMMMMM

Byte 0

MMMMMMMM

• INTEGER

Data length = 2 bytes (1 register)

Byte 1

Most significant byte

(MSB)

Byte 0

Least significant byte

(LSB)

• STRING

Data length = depends on device parameter, e.g. illustration of a device parameter with a data length = 18 bytes (9 registers):

Byte 17

Most significant byte

(MSB)

Byte 16 to to

Byte 1 Byte 0

Least significant byte

(LSB)

Byte transmission sequence

Byte addressing, i.e. the transmission sequence of the bytes, is not specified in the Modbus specification. For this reason, it is important to coordinate the addressing method between the master and slave during commissioning. This can be configured in the measuring device by means of the "BYTE ORDER" parameter ( → "Description of Device Parameters" manual).

The bytes are transmitted depending on the option selected in the "BYTE ORDER" parameter:

FLOAT:

Selection

1 – 0 – 3 – 2 *

0 – 1 – 2 – 3

2 – 3 – 0 – 1

3 – 2 – 1 – 0

1st

Byte 1

(MMMMMMMM)

Byte 0

(MMMMMMMM)

Byte 2

(EMMMMMMM)

Byte 3

(SEEEEEEE)

2nd

Byte 0

(MMMMMMMM)

Sequence

3rd

Byte 3

(SEEEEEEE)

Byte 1

(MMMMMMMM)

Byte 3

(SEEEEEEE)

Byte 2

(EMMMMMMM)

Byte 2

(EMMMMMMM)

Byte 0

(MMMMMMM)

Byte 1

(MMMMMMMM)

4th

Byte 2

(EMMMMMMM)

Byte 3

(SEEEEEEE)

Byte 1

(MMMMMMM)

Byte 0

(MMMMMMMM)

* = Factory setting

S = sign

E = exponent

M = mantissa

Endress+Hauser


INTEGER:

Selection

1 – 0 – 3 – 2 *

3 – 2 – 1 – 0

1st

Byte 1

(MSB)

0 – 1 – 2 – 3

2 – 3 – 0 – 1

Byte 0

(LSB)

* = Factory setting

MSB = most significant byte

LSB = least significant byte

Sequence

2nd

Byte 0

(LSB)

Byte 1

(MSB)

STRING:

Illustration using the example of a device parameter with a data length of 18 bytes.

Selection

1 – 0 – 3 – 2 *

3 – 2 – 1 – 0

1st

Byte 1

0 – 1 – 2 – 3

2 – 3 – 0 – 1

Byte 0

(LSB)

* = Factory setting

MSB = most significant byte

LSB = least significant byte

2nd

Byte 0

(LSB)

Byte 1

Sequence to 17th to to

Byte 17

(MSB)

Byte 16

18th

Byte 16

Byte 17

(MSB)

6.5.6

Modbus error messages

If the Modbus slave detects an error in the request telegram from the master, it sends a reply to the master in the form of an error message consisting of the slave address, function code, exception code and check sum. To indicate that this is an error message, the lead bit of the returned function code is used. The reason for the error is transmitted to the master by means of the exception code.

The following exception codes are supported by the measuring device:

Exception codes Description

01 ILLEGAL_FUNCTION

The function code sent by the master is not supported by the measuring device (slave).

!

Note!

Description of the function codes supported by the measuring device

→  32.

02

03

04

ILLEGAL_DATA_ADDRESS

The register addressed by the master is not assigned (i.e. it does not exist) or the length of the requested data is too big.

ILLEGAL_DATA_VALUE

• The master is attempting to write to a register which only allows read access.

• The value that appears in the data field is not permitted: e.g. range limits overshot or incorrect data format.

SLAVE DEVICE FAILURE

The slave did not respond to the request telegram from the master or an error occurred when processing the request telegram.

Endress+Hauser 35

Operation

36


7

8

5

6

3

4

1

2

9

10

11

6.5.7

Modbus auto-scan buffer

Function description

The Modbus master uses the request telegram to access the device parameters (data) of the measuring device. Depending on the function code, the master gains read or write access to a single device parameter or a group of consecutive device parameters. If the desired device parameters (registers) are not available as a group, the master has to send a request telegram to the slave for each parameter.

The measuring device has a special storage area, known as the auto-scan buffer, for grouping nonconsecutive device parameters. This can be used to flexibly group up to 16 device parameters (registers). The master can talk to this complete data block by means of just one request telegram.

Structure of the auto-scan buffer

The auto-scan buffer consists of two data records, the configuration area and the data area.

In the configuration area, a list known as the scan list specifies which device parameters should be grouped. For this purpose, the corresponding register address, e.g. the register address 2007 for mass flow, is entered in the scan list. Up to 16 device parameters can be grouped.

The measuring device cyclically reads out the register addresses entered in the scan list and writes the associated device data to the data area (buffer). The request cycle runs automatically. The cycle starts again when the last entry in the scan list has been queried.

By means of Modbus, the grouped device parameters in the data area can be read or written by the master with just one request telegram (register address 5051 to 5081).

Configuration of the scan list

During configuration, the Modbus register addresses of the device parameters to be grouped must be entered in the scan list. The scan list can contain up to 16 entries. Float and Integertype device parameters with read and write access are supported.

The scan list can be configured by means of:

1. The local display or a configuration program (FieldCare).

The scan list is configured here by means of the function matrix:

BASIC FUNCTION → Modbus RS485 → SCAN LIST REG. 1 to SCAN LIST REG. 16

2. The Modbus master.

Here, the scan list is configured via the register addresses 5001 to 5016.

Scan list

No.

Modbus configuration

Register address

(data type = Integer)

5001

5002

5003

5004

5005

5006

5007

5008

5009

5010

5011

Configuration via local operation / configuration program

(BASIC FUNCTION → Modbus RS485 → )

SCAN LIST REG. 1

SCAN LIST REG. 2

SCAN LIST REG. 3

SCAN LIST REG. 4

SCAN LIST REG. 5

SCAN LIST REG. 6

SCAN LIST REG. 7

SCAN LIST REG. 8

SCAN LIST REG. 9

SCAN LIST REG. 10

SCAN LIST REG. 11

Endress+Hauser


Scan list

No.

12

13

14

15

16

Modbus configuration

Register address

(data type = Integer)

5012

5013

5014

5015

5016

Configuration via local operation / configuration program

(BASIC FUNCTION → Modbus RS485 → )

SCAN LIST REG. 12

SCAN LIST REG. 13

SCAN LIST REG. 14

SCAN LIST REG. 15

SCAN LIST REG. 16

Access to data via Modbus

The Modbus master uses the register addresses 5051 to 5081 to access the data area of the auto-scan buffer. This data area contains the values of the device parameters defined in the scan list. For example, if the register 2007 was entered for mass flow in the scan list by means of the SCAN LIST REG. 1 function, the master can read out the current measured value of the mass flow in register 5051.

Parameter value/Measured values

Value of scan list entry No. 1












→

→

→

→

→

→

→

→

→

→

→

→

Data area

Access via Modbus register address

5051

5053

5055

5057

5059

5061

5063

5065

5067

5069

5071

5073

Data type *

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Integer/Float





→

→

→

→

5075

5077

5079

5081

* The data type depends on the device parameter entered in the scan list

Integer/Float

Integer/Float

Integer/Float

Integer/Float

Access**

** The data access depends on the device parameter entered in the scan list. If the device parameter entered supports read and write access, the parameter can also be accessed by means of the data area.

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Read/Write

Endress+Hauser 37


Response time

!

The response time when accessing the data area (register addresses 5051 to 5081) is typically between 3 and 5 ms.

Note!

It may take longer for a command to be executed in the device. The data is not updated until the command has been executed. Especially write commands are affected by this.

Example

The following device parameters should be grouped via the auto-scan buffer and read out by the master with just one request telegram:

• Mass flow * Register address 2007

• Temperature * Register address 2017

• Totalizer 1 * Register address 2610

• Actual system condition * Register address 6859

1. Configuration of the scan list

• With the local operation or a configuration program (via the function matrix):

BASIC FUNCTION block → Modbus RS485 function group → SCAN LIST REG. function

→ Entry of the address 2007 under SCAN LIST REG. 1




• Via the Modbus master (the register addresses of the device parameters are written to the registers 5001 to 5004 via Modbus):

1. Write address 2007 (mass flow) to register 5001

2. Write address 2017 (temperature) to register 5002

3. Write address 2610 (totalizer 1) to register 5003

4. Write address 6859 (actual system condition) to register 5004

Modbus RS485

Slave

Master

Data

Register Value

Autoscan Buffer

Data

Value Register

38

Scan List

No.

Register

1

2

3

4

5001

5002

5003

5004

Data

Register

2007

2017

2610

6859

A0004406-en

Fig. 23: Configuration of the scan list via the Modbus master

2. Access to data via Modbus

By specifying the register start address 5051 and the number of registers, the Modbus master can read out the measured values with just one request telegram.

Endress+Hauser


Access via Modbus register address

5051

5053

5055

5057

Data area

Measuring values

Mass flow = 4567.67

Temperature = 26.5

Totalizer 1 = 56345.6

Actual system condition = 1 (system ok)

Data type

Float

Float

Float

Integer

Access

Read

Read

Read

Read

Modbus RS485

Slave

Master

Data

Register Value

2007 4567.67

2017 26.5

2610 56345.6

6859 1

Autoscan Buffer

Data

Value Register

4567.67

26.5

56345.6

1

5051

5053

5055

5057

Scan List

Scan

No.

Register

1

2

3

4

2007

2017

2610

6859

Data

Value

4567.67

26.5

56345.6

1

Fig. 24:

A0004407-en

With just one request telegram, the Modbus master reads out the measured values via the auto-scan buffer of the measuring device.

Endress+Hauser 39


6.6

Operating options

6.6.1

Operating program "FieldCare"

FieldCare is Endress+Hauser’s FDT-based plant asset management tool and allows the configuration and diagnosis of intelligent field devices. By using status information, you also have a simple but effective tool for monitoring devices. The Proline flowmeters are accessed via a service interface or via the service interface FXA193.

6.6.2

Device description files for operating programs

Operation:

Operating program/Device driver:

FieldCare/ DTM

How to acquire:

• www.endress.com ( → Download → So ft ware → Driver)

• CD-ROM (Endress+Hauser order number: 56004088)

40 Endress+Hauser


6.7

Switching hardware write protection on/off

A jumper on the I/O board provides the means of switching hardware write protection on or off. When the write protection is switched on, it is not possible to write to the device parameters via Modbus RS485.

#

Warning!

Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the power supply is switched off before you remove the cover of the electronics compartment.

1. Switch off power supply.

2. Remove the I/O board

→  79.

3. Configure the hardware write protection accordingly with the aid of the jumpers ( → 

25).

4. Installation is the reverse of the removal procedure.

1

2

3

4

N

E

O

W

N

E

O

W

N

E

O

W

N

E

O

W

1

2

3

4

1

2

3

4

1

2

3

4

3

INPUT/OUTPUT

4

INPUT/OUTPUT

1

1.1

1.2

Fig. 25:

1

1.1

1.2

Switching write protection on and off with the aid of a jumper on the I/O board

Jumper for switching write protection on and off

Write protection switched on = it is not possible to write to the device parameters via Modbus RS485

Write protection switched off (factory setting) = it is possible to write to the device parameters via Modbus RS485

A0002598

Endress+Hauser 41

Commissioning CNGmass DCI Modbus RS485

7 Commissioning

7.1

Function check

Make sure that all the final checks have been completed before commissioning the measuring point:

• Checklist for "Post-installation check" →  15.

• Checklist for "Post-connection check"

→  21.

7.2

Switching on the measuring device

If the post-connection checks have been performed, the supply voltage can be switched on.

The device is now operational.

The measuring device performs a number of power on self-tests. As this procedure progresses the following sequence of messages appears on the local display:

CNGmass DCI

START-UP

RUNNING

CNGmass DCI

▾

DEVICE SOFTWARE

V XX.XX.XX

▾

Modbus RS485

RELAY OUTPUT 1

RELAY OUTPUT 2

STATUS INPUT 1

▾

C.T.

YES/NO

Startup message

Current software version

List of installed input/output modules

SYSTEM OK

▾

→ OPERATION

▾

Beginning of normal measuring mode

Normal measuring mode commences as soon as startup completes.

Various measured value and/or status variables appear on the display (HOME position).

!

Note!

If startup fails, an error message indicating the cause is displayed.

42 Endress+Hauser

CNGmass DCI Modbus RS485 Commissioning

7.3

Quick Setup

In the case of measuring devices without a local display, the individual parameters and functions must be configured via the configuration program, e.g. FieldCare. If the measuring device is equipped with a local display, all the important device parameters for standard operation can be configured quickly and easily by means of the "Commissioning" Quick Setup menu.

• Quick Setup "Commissioning", see below

• Quick Setup "Pulsating Flow" →  45

• Quick Setup "Gas measurement"

→  48

• Quick Setup "Communication" →  50

7.3.1

Quick Setup "Commissioning"

!

Note!

• The display returns to the function SETUP COMMISSIONING (1002) if you press the Q key combination during parameter interrogation. The stored parameters remain valid.

• The "COMMISSIONING" Quick Setup must be performed before another Quick Setup is run.

1 The "DELIVERY SETTINGS" option sets every selected unit to the factory setting.

The "ACTUAL SETTING" option accepts the units you previously configured.

2 Only units not yet configured in the current Setup are offered for selection in each cycle. The unit for mass, volume and corrected volume is derived from the corresponding flow unit.

3 The "YES" option remains visible until all the units have been configured.

"NO" is the only option displayed when no further units are available.

4 The prompt only appears if a current and/ or pulse/frequency output is available. Only the outputs not yet configured in the current Setup are offered for selection in each cycle.

5 The "YES" option remains visible until all the outputs have been configured.

"NO" is the only option displayed when no further outputs are available.

6 The "automatic parameterization of the display" option contains the following basic settings/factory settings:

YES Main line = Mass flow

Additional line = Totalizer 1

Information line = Operating/system conditions

NO The existing (selected) settings remain.

7 The process for executing other Quick Setups is described in the following chapters.

Endress+Hauser 43


XXX.XXX.XX

-

Esc

+

E

HOME POSITION

E

Quick

Setup

B

QS 1002

Commission

Language

2000

Pre-setting

1.

Selection pre-settings

Actual Settings

2.

3.

Mass flow

Unit

Mass flow

0400

Unit

Totalizer

3001

Yes

Volume flow Corr. Vol. flow

Selection system units

Density

Unit 0402

Volume flow

Unit

Totalizer

3001

Unit 0404

Corr. Vol. flow

Corr. Vol.

calculation

6460

Reference

Density

Calculated

Unit

Density

0420

Unit

Ref. Density

0421

Fix.

Density

6461

Exp.

Coeff. Lin

6462

Exp.

Coeff. SQR

6463

Ref.

6464 temperature

Configure another system unit ?

Temperature

Unit 0422

Temperature

No

4.

5.

Current output n

Assign 4000

Current output

Current span

4001

Value

0/4 mA

4002

Value

20 mA

4003

Meas.

mode

4004

Time constant

4005

Failsafe mode

4006

Yes

Assign 4201

Freq. output

End value freq.

4203

4204

Value

F Low

Value

F High

4205

4206

Meas.

mode

Output signal

4207

Time constant

4208

4209

Failsafe mode

Selection output type

Freq./Pulse output n

Operation

4200

Mode

Frequency Pulse

Assign 4221

Pulse output

4222

Pulse value

4223

Pulse width

4225

Meas.

mode

Output signal

4226

Failsafe mode

4227

Configure another output ?

No

6.

7.

Yes

Automatic parameterization of the display

Automatic configuration of display ?

Pulsating flow

Carrying out another Quick Setup ?

Gas measurement Communication

Carrying out the selected Quick Setup

No

No

Quit

Quit

Fig. 26: Quick Setup for quick commissioning

A0011952-en

44 Endress+Hauser


7.3.2

Quick Setup "Pulsating Flow"

!

Note!

The "Pulsating Flow" Quick Setup is only available if the device has a current output or a pulse/ frequency output.

Certain types of pump such as reciprocating, peristaltic and cam-type pumps, for example, create a flow characterized by severe periodic fluctuations. Negative flows can occur with pumps of these types on account of the closing volume of the valves or valve leaks.

!

Note!

Before carrying out the Quick Setup "Pulsating Flow", the Quick Setup "Commissioning" has to

be executed →  43.

A

1

Q

3

Q

2

Q t t

4

Q t

B

5

Q t t

A0001213

3

4

1

2

5

Fig. 27:

A

B

Flow characteristics of various types of pump

With severely pulsating flow

With low pulsating flow

1-cylinder cam pump

2-cylinder cam pump

Magnetic pump

Peristaltic pump, flexible connecting hose

Multi-cylinder reciprocating pump

Severely pulsating flow

Once several device functions have been configured in the "Pulsating flow" Quick Setup menu, flow fluctuations of this nature can be compensated over the entire flow range and pulsating fluid flows measured correctly. You will find detailed instructions on how to use this Quick

Setup in the following section.

!

Note!

It is always advisable to work through the "Pulsating flow" Quick Setup menu if there is any uncertainty about the exact flow characteristic.

Slightly pulsating flow

If flow fluctuations are no more than minor, as is the case, for example with gear-type, three-cylinder or multi-cylinder pumps, it is not absolutely necessary to work through the

Quick Setup menu.

In cases of this nature, however, it is advisable to adapt the functions listed below in the function matrix ( → "Description of Device Parameters" manual) to suit local process conditions in order to ensure a stable, unvarying output signal:

• Measuring system damping: "FLOW DAMPING" function → Increase value

• Current output damping: TIME CONSTANT function → Increase value

Endress+Hauser 45

Commissioning

46


Performing the "Pulsating flow" Quick Setup

This Quick Setup menu guides you systematically through the setup procedure for all the device functions that have to be parameterized and configured for measuring pulsating flows. Note that this has no effect on values configured beforehand, such as measuring range, current range or full scale value.

1.

XXX.XXX.XX

-

Esc

+ E

HOME-POSITION

E

Totalizer 1

Totalizer mode (DAA)

3002

+ +

B

Quick Setup

E +

QS 1003

Plusating Flow

Display damping

2002

Totalizer 2

Selection totalizer

Totalizer 3

Totalizer mode (DAB)

3002 Totalizer mode (DAC)

3002

2.

Yes Configure another totalizer ?

3.

Current output n

4004

Measuring mode

4005

Time constant

Select output type

Freq.-/Pulse output n

4200

Operation mode

Frequency

4206

Measuring mode

4208

Time constant

Pulse

4225

Measuring mode

No

Quit

Quit

4.

Yes Configure another output ?

No

Alarm delay

8005

Assign

LF-Cut off

6400

On-value

LF-Cut off

6402

Off-value

LF-Cut off

6403

Pressure 6404 shock suppression

Quit

Quick Setup

Fig. 28: Quick Setup for measuring severely pulsating flows

1 Only totalizers not yet configured in the current Setup are offered for selection in each cycle.

2 The "YES" option remains visible until all the totalizers have been configured.

"NO" is the only option displayed when no further totalizers are available.

3 Only the output not yet configured in the current Setup is offered for selection in the second cycle.

4 The "YES" option remains visible until both outputs have been configured.

"NO" is the only option displayed when no further outputs are available.

A0004431-en

Endress+Hauser


!

Note!

• The display returns to the function QUICK SETUP PULSATING FLOW (1003) if you press the Q key combination.

• You can call up the Setup menu either directly from the "COMMISSIONING" Quick Setup menu or manually by means of the function QUICK SETUP PULSATING FLOW (1003).

Recommended settings

Quick Setup "Pulsating Flow"

HOME position →  → MEASURED VARIABLE →  → QUICK SETUP →  → QS PULSATING FLOW (1003)

Function No.

Function name

1003 QS PULS. FLOW

Selection with 

To next function with 

YES

After  is pressed by way of confirmation, the

Quick Setup menu calls up all the subsequent functions in succession.

▾

Basic configuration

2002

3002

3002

3002

DISPLAY DAMPING

TOTALIZER MODE (DAA)

TOTALIZER MODE (DAB)

TOTALIZER MODE (DAC)

Signal type for "CURRENT OUTPUT"

4004

4005

MEASURING MODE

TIME CONSTANT

1 s

BALANCE (Totalizer 1)



PULSATING FLOW

1 s

Signal type for "FREQ./PULSE OUTPUT" (for FREQUENCY operating mode)

4206 MEASURING MODE PULSATING FLOW

4208 TIME CONSTANT 0 s

Signal type for "FREQ./PULSE OUTPUT " (for PULSE operating mode)

4225

Other settings

MEASURING MODE PULSATING FLOW

8005

6400

6402

6403

6404

ALARM DELAY

ASSIGN LOW FLOW CUTOFF

ON-VALUE LOW FLOW CUT OFF

OFF-VALUE LOW FLOW CUTOFF

PRESSURE SHOCK SUPPRESSION

▾

0 s

MASS FLOW

Setting depends on diameter:

DN 8 = 2.0 [kg/h] or [l/h]

DN 15 = 6.5 [kg/h] or [l/h]

DN 25 = 18 [kg/h] or [l/h]

50%

0 s

Back to the HOME position:

→ Press and hold down Esc key

X

for longer than three seconds or

→ Repeatedly press and release Esc key

X

→ Exit the function matrix step by step

Endress+Hauser 47


7.3.3

Quick Setup "Gas measurement"

The measuring device is not only suitable for measuring liquid flow. Direct mass measurement based on the Coriolis principle is also possible for measuring the flow rate of gases.

!

Note!

• Before carrying out the Quick Setup "Gas measurement", the Quick Setup "Commissioning"

has to be executed →  43.

• Only mass and Corrected volume flow can be measured and output with the gas measurement mode. Note that direct density and/or volume measurement is not possible.

• The flow ranges and measuring accuracy that apply to gas measurement are not the same as those for liquids.

• If corrected volume flow (e.g. in Nm³/h) is to be measured and output instead of the mass flow (e.g. in kg/h), change the setting for the CORRECTED VOLUME CALCULATION function to "FIXED REFERENCE DENSITY" in the "Commissioning" Quick Setup menu.

Corrected volume flow can be assigned as follows:

– to a display line,

– to the current output,

– to the pulse/frequency output.

Performing the "Gas Measurement" Quick Setup

This Quick Setup menu guides you systematically through the setup procedure for all the device functions that have to be parameterized and configured for gas measurement.

XXX.XXX.XX

-

Esc

+ E

HOME-POSITION

B

QS

Gas measurement

1004

Assign

Low flow cut off

6400

On-value

Low flow cut off

6402

Off-value

Low flow cut off

6403

A0002502-en

Fig. 29: Quick Setup "Gas measurement"

Recommended settings are found on the following page.

48 Endress+Hauser


Quick Setup "Gas measurement"

HOME position →→ MEASURED VARIABLE (A)

MEASURED VARIABLE →→ QUICK SETUP (B)

QUICK SETUP →

N

→ QS-GAS MEASUREMENT (1004)

Function No.

Function name

1004 QS GAS MEASUREMENT

Setting to be selected (

P

(to next function with  )

)

YES

After  is pressed by way of confirmation, the

Quick Setup menu calls up all the subsequent functions in succession.

▾

6400

6402

6403

ASSIGN LOW FLOW CUTOFF

ON-VALUE LOW FLOW CUT OFF

OFF-VALUE LOW FLOW CUTOFF

On account of the low mass flow involved when gas flows are measured, it is advisable not use a low flow cutoff.

Setting: OFF

If the ASSIGNMENT LOW FLOW CUTOFF function was not set to "OFF", the following applies:

Setting:

0.0000 [unit]

User input:

Flow rates for gas measurements are low, so the value for the switch-on point (= low flow cutoff) must be correspondingly low.

If the ASSIGNMENT LOW FLOW CUTOFF function was not set to "OFF", the following applies:

Setting:

50%

User input:

Enter the switch-off point as a positive hysteresis in %, referenced to the switch-on point.

▾



X


→ Repeatedly press and release Esc key

X

→ Exit the function matrix step by step

!

Note!

Quick Setup automatically deactivates the function EMPTY PIPE DETECTION (6420) so that the device can measure flow at low gas pressures.

Endress+Hauser 49

Commissioning

50


7.3.4

Quick Setup "Communication"

To establish serial data transfer, various arrangements between the Modbus master and

Modbus slave are required which have to be taken into consideration when configuring various functions. These functions can be configured quickly and easily by means of the

"Communication" Quick Setup. The following table explains the parameter configuration options in more detail.

+ + Quick Setup

B

XXX.XXX.XX

-

Esc

+

E

HOME-POSITION

E

QS

Communication

1006

Fieldbus

Address

6301

6302

Baudrate

Transmission

Mode

6303

Parity

6304

Byte

Order

6305

Delay

Telegram reply

6306

A0004430-en

Fig. 30: Quick Setup communication


HOME position →→ MEASURAND →→ QUICK SETUP →

N

→ QUICK SETUP COMMUNICATION

Function No.

Function name

1006 QUICK SETUP

COMMUNICATION

Setting to be selected (  )

(to next function with  )

YES → A ft er  is pressed by way of con fi rmation, the Quick Setup menu calls up all the subsequent functions in succession.

6301 FIELDBUS ADDRESS

6302

6303

BAUDRATE

MODE

DATA TRANSFER

Enter the device address (permitted address range: 1 to 247)

Factory setting: 247

Supported baudrates [BAUD]:

1200/2400/4800/9600/19200/38400/57600/115200

Factory setting: 19200 BAUD

Select the data transfer mode:

• ASCII → Data transmission in the form of readable ASCII characters. Error protection via LRC.

• RTU → Data transmission in binary form.

Error protection via CRC16.

Factory setting: RTU

Endress+Hauser



6304 PARITY

6305 BYTE ORDER

Selection depends on the "Data transfer mode" function:

NONE; EVEN; UNEVEN

• Available in the ASCII transfer mode * even or uneven parity bit (EVEN, UNEVEN).

• Available in the RTU transfer mode * no parity bit (NONE) or even or uneven parity bit (EVEN, UNEVEN).

Factory setting: EVEN

Select the byte transmission sequence for the Integer, Float and

String data types:

0 - 1 - 2 - 3

3 - 2 - 1 - 0

2 - 3 - 0 - 1

1 - 0 - 3 - 2

Factory setting: 1 - 0 - 3 - 2

!

Note!

The transmission sequence must suit the Modbus master.

6306 DELAY TELE. REPLY For entering a delay time after which the measuring device replies to the request telegram of the Modbus master. This allows communication to be adapted to slow Modbus masters:

0 to 100 ms

Factory setting: 10 ms



X


Repeatedly press and release → Esc keys

X

= Exit the function matrix step by step

!

Note!

The parameters described in the table can be found in the "Modbus RS485" group of the

"BASIC FUNCTION" block in the function matrix ( → "Description of Device Parameters" manual).

Endress+Hauser 51


7.3.5

Data back-up/transfer

You can use the T-DAT SAVE/LOAD function to transfer data (device parameters and settings) between the T-DAT (removable memory) and the EEPROM (device memory).

This is required for the following applications:

• Creating a backup: current data are transmitted from an EEPROM to the T-DAT.

• Replacing a transmitter: current data are copied from an EEPROM to the T-DAT, then transmitted to the EEPROM of the new transmitter.

• Duplicating data: current data are copied from an EEPROM to the T-DAT, then transmitted to EEPROMs of identical measuring points.

!

Note!

Installing and removing the T-DAT

→  79.

XXX.XXX.XX

-

Esc

+

E

HOME

POSITION

Quick Setup

T-DAT

SAVE/LOAD

SAVE LOAD CANCEL

YES NO NO YES

Input is saved

Restart of the measuring device

A0001221-en

Fig. 31: Data storage/transmission with T-DAT SAVE/LOAD

Notes on the LOAD and SAVE options:

LOAD: Data are transmitted from the T-DAT to the EEPROM.

!

Note!

• Previously saved settings on the EEPROM are deleted.

• This option is only available if the T-DAT contains valid data.

• This selection can be made only if the software version of the T-DAT is the same or newer than that of the EEPROM. Otherwise, the error message "TRANSM. SW-DAT" appears after the restart and the LOAD function is subsequently no longer available.

SAVE: Data are transmitted from the EEPROM to the T-DAT.

52 Endress+Hauser


7.4

Configuration

#

Warning!

In the case of explosion-protected equipment, observe a cooling or discharge time of 10 minutes before opening the device.

7.4.1

Configuring the device address

The device address must always be configured for a Modbus slave. The valid device addresses are in a range from 1 to 247. In a Modbus RS485 network, each address can only be assigned once. If an address is not configured correctly, the device is not recognized by the Modbus master. All measuring devices are delivered from the factory with the device address 247 and with the "software addressing" address mode.

Addressing via local operation

More detailed explanations for addressing the measuring device via the local display →  50

#

Addressing via miniature switches

Warning!


1. Loosen the Allen screw (3 mm) of the securing clamp.


3. Remove the local display (if present) by loosening the set screws of the display module.

4. Set the position of the miniature switches on the I/O board using a sharp pointed object.


OFF ON

1

2

3

4

1

2

3

4

1

2

3

4

3

4

1

2

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

N

E

O

W

N

E

O

W

N

E

O

W

1

2

3

4

OFF ON

Fig. 32: a b c

Addressing with the aid of miniature switches on the I/O board

Miniature switches for setting the device address (illustrated: 1 + 16 + 32 = device address 49)

Miniature switches for the address mode (method of addressing)

– OFF = software addressing via local operation (factory setting)

– ON = hardware addressing via miniature switches

Miniature switches not assigned

16

32

64

128

4

8

1

2 a b c

A0004391

Endress+Hauser 53


7.4.2

Configuring the terminating resistors

It is important to terminate the Modbus RS485 line correctly at the start and end of the bus segment since impedance mismatch results in reflections on the line which can cause faulty communication transmission.

#

Warning!


The miniature switch for termination is located on the I/O board ( →  33):

A

SW 1

1

2

3

4

OFF ON

+5V

390 Ω

220 Ω

390 Ω

B

SW 1

1

2

3

4

OFF ON

+5V

390 Ω

220 Ω

390 Ω

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

N

E

O

W

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4 3

INPUT/O

UTPUT

4

INPUT/O

UTPUT

A0004392

Fig. 33: Configuring the terminating resistors

A = Factory setting

B = Setting at the last transmitter

!

Note!

It is generally recommended to use external termination since if a device that is terminated internally is defect, this can result in the failure of the entire segment.

54 Endress+Hauser


7.4.3

Current output: active/passive

#

The current output is configured as "active" or "passive" by means of various jumpers on the current submodule.

Warning!




→  79.

3. Set the jumpers (

→  34).

" Caution!

Risk of destroying the measuring device. Set the jumpers exactly as shown in

→  34.

Incorrectly set jumpers can cause overcurrents that would destroy either the measuring device or external devices connected to it.

4. Installation of the I/O board is the reverse of the removal procedure.

1

2

3

4

N

E

O

W

1.1

1.2

+

+ 1

2

3

4

1

2

3

4

1

2

3

4

E

W

O

N

N

E

O

W

N

E

O

W

INPUT/OUTPUT

4

INPUT/OUTPUT

3

1

A0004411

Fig. 34:

1

1.1

1.2

Configuring current output with the aid of jumpers (I/O board)

Current output

Active current output (default)

Passive current output

Endress+Hauser 55


7.4.4

Pulse/frequency output

#

The configuration of the pulse/frequency output with line monitoring "On" or "Off" takes place by means of various jumpers on the pulse/frequency output submodule.

Warning!



2. Remove the I/O board →  79.


→  35).

" Caution!

Risk of destroying the measuring device. Set the jumpers exactly as shown in the diagram. Incorrectly set jumpers can cause overcurrents that would destroy either the measuring device or external devices connected to it.


1

2

3

4

N

E

O

W

N

E

O

W

N

E

O

W

N

E

O

W

1

2

3

4

1

2

3

4

1

2

3

4

INPUT/OUTPUT

4

INPUT/OUTPUT

3

+

+

Fig. 35:

1

1.1

1.2

Configuring pulse/frequency outputs with the aid of jumpers (I/O board)

Pulse/frequency output 1

Line monitoring ON (factory setting)

Line monitoring OFF

1.1

1.2

A0011939

56 Endress+Hauser


7.4.5

Relay contacts: Normally closed/Normally open

The relay contact can be configured as normally open (NO or make) or normally closed (NC or break) contacts by means of two jumpers on the pluggable submodule. This configuration can be called up at any time with the ACTUAL STATUS RELAY (4740) function.

#

Warning!




→  79.


→  36).

" Caution!

If you change the setting you must always change the positions of both jumpers.

Note precisely the specified positions of the jumpers.


1

2

3

4

N

E

O

W

N

E

O

W

N

E

O

W

E

W

O

N

1

2

3

4

1

2

3

4

1

2

3

4

3

INPUT/OUTPUT

4

INPUT/OUTPUT

1

2

+

+

Fig. 36:

1

2

Configuring relay contacts (NC / NO) using jumpers on the convertible I/O board (submodule).

Configured as NO contact (default, relay 1)

Configured as NC contact (default, relay 2)

A0004412

Endress+Hauser 57


7.5

Adjustment

7.5.1

Zero point adjustment

All measuring devices are calibrated with state-of-the-art technology. Calibration takes

place under reference operating conditions →  87. Consequently zero point adjustment is

generally not necessary for CNGmass DCI.

Experience shows that the zero point adjustment is advisable only in special cases:

• To achieve highest measuring accuracy also with very small flow rates.

• Under extreme process or operating conditions (e.g. very high process temperatures).

Preconditions for a zero point adjustment

Note the following before you perform a zero point adjustment:

• Adjustment can only be performed on homogeneous fluids.

• Zero point adjustment is performed at zero flow (v = 0 m/s). This can be achieved, for example, with shutoff valves upstream and/or downstream of the sensor or by using existing valves and gates.

– Normal operation → Valves 1 and 2 open

– Zero point adjustment with pump pressure → Valve 1 open / valve 2 closed

– Zero point adjustment without pump pressure → Valve 1 closed / valve 2 open

2

1

Fig. 37: Zero point adjustment and shutoff valves

"

Caution!

• The currently valid zero point value can be viewed using the "ZEROPOINT" function

( → "Description of Device Parameters" manual).

A0003601

58 Endress+Hauser


Performing a zero point adjustment

1. Operate the system until operating conditions have settled.

2. Stop the flow (v = 0 m/s).

3. Check the shutoff valves for leaks.

4. Check that operating pressure is correct.

5. Using the local display, select the ZEROPOINT ADJUSTMENT function in the function matrix: BASIC FUNCTIONS → PROCESSPARAMETER → ADJUSTMENT → ZERO POINT

ADJUSTMENT

6. When you press  or  you are automatically prompted to enter the access code if the function matrix is still disabled. Enter the code (factory setting = 84).

7. Use  or  to select START and confirm with  .

Select YES at the prompt and press  again to confirm.

Zero point adjustment now starts.

– The message "ZEROPOINT ADJUST RUNNING" appears on the display for 30 to 60 seconds while adjustment is in progress.

– If the flow in the pipe exceeds 0.1 m/s, the following error message appears on the display: "ZERO ADJUST NOT POSSIBLE".

– When the zero point adjustment completes, the "ZERO ADJUST." function reappears on the display.

8. Back to the HOME position:

– Press and hold down Esc key ( X ) for longer than three seconds or

– Repeatedly press and release the Esc key ( X ).

7.6

Memory (HistoROM)

At Endress+Hauser, the term HistoROM refers to various types of data storage modules on which process and measuring device data are stored. By unplugging and plugging such modules, device configurations can be duplicated onto other measuring devices, to cite just one example.

7.6.1

HistoROM/S-DAT (sensor-DAT)

The S-DAT is an exchangeable data storage device in which all sensor relevant parameters are stored, i.e., diameter, serial number, calibration factor, zero point.

7.6.2

HistoROM/T-DAT (transmitter-DAT)

The T-DAT is an exchangeable data storage device in which all transmitter parameters and settings are stored.

Storing of specific parameter settings from the EEPROM to the T-DAT and vice versa has to be carried out by the user (= manual save function). Detailed instructions regarding this can be found in the manual "Description of Device Parameters", GP003D/06/, (function "T-DAT

SAVE/LOAD", No. 1009).

Endress+Hauser 59

Custody transfer measurement CNGmass DCI Modbus RS485

8 Custody transfer measurement

CNGmass DCI is flowmeter that is suitable for custody transfer measurement.

8.1

Suitability for custody transfer measurement, approval by the Standards Authorities, repeated calibration due to legal metrology controls

Only once it has been approved by the authority for legal metrology controls may the measuring device be regarded as verified and used for applications subject to legal metrology controls. The associated seal on the measuring device ensures this status.

"

Caution!

Only flowmeters verified by the Standards Authorities may be used for invoicing in applications subject to legal metrology controls. Country-specific requirements and regulations (such as the German Calibration Law) must be observed.

8.1.1

Approval for custody transfer

The following guidelines for the custody transfer process were developed in accordance with the following authorities for legal metrology controls:

• PTB , Germany

• NMi , The Netherlands

• METAS , Switzerland

• BEV , Austria

• NTEP , USA

• MC , Canada

• Rosstandart , Russia

8.1.2

Special features of working in the custody transfer mode

Switching on the power supply in custody transfer mode

If the measuring device is started in custody transfer mode, for example after a power outage, system error No. 271 "POWER BRK. DOWN" flashes on the local display.

The fault message can be acknowledged or reset using the "Enter" key or by means of the status input configured accordingly.

!

Note!

It is not mandatory to reset the fault message for correct operation.

60 Endress+Hauser


Endress+Hauser

Custody transfer measurement

8.2

Definition of terms

Terms used in the subject area "suitability for custody transfer measurement for liquids other than water"

Additional devices

Adjust

Ancillary equipment Equipment used for direct further processing of the measurement result (e.g. printers, quantity convertors, price calculators, pre-set devices etc.).

Calibrate Determine and save correction values for the individual measuring device to get as close as possible to the "real" value with the measured value.

Counter

Equipment that does not have a direct effect on the measurement but which is needed to ensure correct measuring or make it easier (e.g. gas display units, filters, pumps etc.)

Adjustment on site (zero point, density) under operating conditions.

Is performed by the facility's owner-operator.

Q max

Device for measuring, saving and displaying the variables subject to mandatory verification (mass, volume, density etc.)

Maximum flow of the counter while observing the error limits.

Q min

Minimum flow as of which the counter must observe the error limits.

Measured error

Measuring system

Quantity convertor

Reapproval

(Also known as limit of permissible error, error limit or inaccuracy). Relative measurement error, derived from the quotient (measured value – "true" measured value) : "true" measured value in percent.

Measuring device that includes the counter and all the ancillary equipment and additional devices.

Unit for automatically converting the measured value determined to another variable

(pressure, temperature, density etc.) or nonvolatile saved conversion values for the fluid.

Verified measuring devices can be reapproved if they observe the applicable limits of error in legal metrology and meet any other requirements which applied when they were initially verified. The authority responsible provides you with information as to how long the verification is valid.

Repair

Stamp points

Upon request, the authority responsible can give companies that repair verified measuring devices (repairers) the authority to mark repaired devices (repairer mark) if they have the equipment necessary for repair and adjustment and have properly trained specialist staff.

Endress+Hauser is authorized to carry out repair work on verified measuring devices.

To be provided on all parts of the measuring system which cannot otherwise be protected against any alteration (=falsification) to measured value determination and processing. Lead stamping is preferably used, but adhesive seals are also permitted.

They may only be affixed by an authorized party, namely authority for legal metrology controls or service team with field service mark.

Suitable for custody transfer measurement

A measuring system or a part of the system, for example counters or accessory equipment, has the (type) "approval for national verification" of a (national) approval center.

Verified

Verify

The measuring system has been inspected and sealed on site by a representative of the authority for legal metrology controls. This must be arranged by the facility's owneroperator.

Inspection of a measuring system to determine the measured error from the "true" value with subsequent system sealing. Verification can only be carried out on site by the authority for legal metrology controls responsible.

61


8.3

Verification process

8.3.1

Setting up custody transfer mode

The measuring device has to be operational and not set to custody transfer mode.

1. Configure the functions important for custody transfer measurement, such as the output configuration, custody transfer variable and the measuring mode.

– In the "CUSTODY TRANSFER" block (function block Z; functions Z001 to Z008), the outputs relevant for custody transfer measurement can be set to custody transfer and the current custody transfer status can be displayed.

– In the "OUTPUTS" block (function block E), the custody transfer variables can be assigned to the existing outputs.

– In the "INPUTS" block (function block F), a switching behavior is assigned to the input.

For NTEP and MC only: The "CUSTODY TRANSFER" block is hidden. All relevant outputs are set to custody transfer.

!

Note!

Please refer to the separate "Description of Device Parameters" manual for a detailed description of the functions.

2. Once all the functions relevant to custody transfer have been configured, the custody transfer code is entered in the "ACCESS CODE (2020)" cell.

Custody transfer code: 8400

The functions are locked once you enter the custody transfer code. These functions are marked with a keyhole symbol ( manual.

` ) in the separate "Description of Device Parameters"

3. The lead stamping of the device (

→  38).

4. The device is suitable for custody transfer measurement. The flow measurement may now be used in applications subject to legal metrology controls.

62 Endress+Hauser


A ht w hi le liv e

Nich öffnen ng

Ke

A

B

Custody transfer measurement

A

Fig. 38: Examples of how to seal the various device versions.

B

A0011835

Endress+Hauser 63


8.3.2

Disabling custody transfer mode

The measuring device has to be operational and already set to custody transfer mode.

1. Disconnect the device from the operating voltage.

#

2. Remove the custody transfer seals.

Warning!

In the case of explosion-protected equipment, observe a cooling or discharge time of 10 minutes before opening the device.

3. Open the cover of the transmitter housing electronics compartment.

Detailed procedure for the compact version/wall-mount housing →  79.

4. Remove the S-DAT.

5. Reconnect the device to the power supply.

6. The device runs through the startup cycle.

After startup, the error message "#031 SENSOR HW-DAT" is displayed.

!

Note!

This error message appears because the S-DAT has been removed.

This does not have any effect on the subsequent steps.

7. Disconnect the device from the power supply again.

8. Reinsert the S-DAT.

9. Screw the covers of the electronics compartment and the display module back on.

10. Reconnect the device to the power supply.

11. The device runs through the startup cycle.

During startup, the message "CUSTODY TRANSFER NO" appears on the display.

12. The device is now operational and is not in custody transfer mode.

!

Note!

To set the device back to custody transfer mode, proceed as described on

→  62.

64 Endress+Hauser

CNGmass DCI Modbus RS485 Maintenance

9 Maintenance

No special maintenance work is required.

9.1

External cleaning

When cleaning the exterior of measuring devices, always use cleaning agents that do not attack the surface of the housing and the seals.

Endress+Hauser 65

Accessories CNGmass DCI Modbus RS485

10 Accessories

Various accessories, which can be ordered with the device or subsequently from

Endress+Hauser, are available for the device. Detailed information on the order code in question is available from your local Endress+Hauser sales center or on the product page of the Endress+Hauser website: www.endress.com

.

10.1

Device-specific accessories

10.1.1 For the Transmitter

Accessories

Mounting set for transmitter

Description

Mounting set for wall-mount housing (remote version). Suitable for:

• Wall mounting

• Pipe mounting

• Installation in control panel

Mounting set for aluminum field housing:

Suitable for pipe mounting (¾" to 3")

10.2

Service-specific accessories

Accessories

Applicator

W@M

FieldCare

FXA291

Description

Software for selecting and sizing Endress+Hauser measuring devices:

• Calculation of all the necessary data for identifying the optimum flowmeter: e.g. nominal diameter, pressure loss, accuracy or process connections

• Graphic illustration of the calculation results

Administration, documentation and access to all project-related data and parameters over the entire life cycle of a project.

Applicator is available:

• Via the Internet: https://wapps.endress.com/applicator

• On CD-ROM for local PC installation

Life cycle management for your plant.

W@M supports you with a wide range of software applications over the entire process: from planning and procurement, to the installation, commissioning and operation of the measuring devices. All the relevant device information, such as the device status, spare parts and device-specific documentation, is available for every device over the entire life cycle. The application already contains the data of your

Endress+Hauser device. Endress+Hauser also takes care of maintaining and updating the data records.

W@M is available:

• Via the Internet: www.endress.com/lifecyclemanagement

• On CD-ROM for local PC installation

FieldCare is Endress+Hauser’s FDT-based plant asset management tool and allows the configuration and diagnosis of intelligent field devices. By using status information, you also have a simple but effective tool for monitoring devices. The flowmeters are accessed via a service interface or via the service interface FXA193.

Service interface from the measuring device to the PC for operation via FieldCare.

66 Endress+Hauser

CNGmass DCI Modbus RS485 Accessories

10.3

System components

Accessories

Memograph M graphic display recorder

Description

The Memograph M graphic display recorder provides information on all the relevant process variables. Measured values are recorded correctly, limit values are monitored and measuring points analyzed. The data are stored in the 256 MB internal memory and also on a DSD card or USB stick. Memograph M boasts a modular design, intuitive operation and a comprehensive security concept. The

ReadWin ® 2000 PC software is part of the standard package and is used for configuring, visualizing and archiving the data captured. The mathematics channels which are optionally available enable continuous monitoring of specific power consumption, boiler efficiency and other parameters which are important for efficient energy management.

Endress+Hauser 67

Troubleshooting CNGmass DCI Modbus RS485

11 Troubleshooting

11.1

Troubleshooting instructions

Always start troubleshooting with the following checklist if faults occur after commissioning or during operation. The routine takes you directly to the cause of the problem and the appropriate remedial measures.

Check the display

No display visible and no output signals present.

1. Check the supply voltage → Terminal 1, 2

2. Check device fuse

→  83

85 to 260 V AC: 0.8 A slow-blow / 250 V

20 to 55 V AC and 16 to 62 V DC:

2 A slow-blow / 250 V

3. Measuring electronics defective → order spare parts

→  78.

No display visible, but output signals are present.

Display texts are in a foreign language.

1. Check whether the ribbon-cable connector of the display module is correctly plugged into the amplifier board

→  78.

2. Display module defective → order spare parts

→  78.

3. Measuring electronics defective → order spare parts

→  78.

Switch off power supply. Press and hold down both the maximum contrast.

P

keys and switch on the measuring device. The display text will appear in English (default) and is displayed at

Measured value indicated, but no signal at the current or pulse output

Measuring electronics defective →

order spare parts →  78.

▾

Error messages on display

Errors that occur during commissioning or measuring are displayed immediately. Error messages consist of a variety of icons. The meanings of these icons are as follows (example):

– Type of error: S = System error, P = Process error

– Error message type:

$

= Fault message, !

= Notice message

– FLUID INHOM.

= Error designation (e.g. fluid is not homogeneous)

– 03:00:05 = Duration of error occurrence (in hours, minutes and seconds)

– #702 = Error number

" Caution!

See the information on

→  28.

Error number:

No. 001 - 399

No. 501 - 699

Error number:

No. 400 - 499

No. 700 - 799

System error (device error) has occurred

→ 

Process error (application error) has occurred

▾

Other error (without error message)

Some other error has occurred.

Diagnosis and rectification →  75

69

→  74

68 Endress+Hauser

CNGmass DCI Modbus RS485 Troubleshooting

11.2

System error messages

Serious system errors are always recognized by the device as "Fault message", and are shown as a lightning flash ( $ ) on the display. Fault messages immediately affect the outputs.

Simulations and positive zero return, on the other hand, are classed and displayed as "Notice messages".

"

Caution!

In the event of a serious fault, a flowmeter might have to be returned to the manufacturer for repair. Procedures must be carried out before you return a flowmeter to Endress+Hauser

for repair or calibration →  5,

→  84.

!

Note!

• The listed error message types below correspond to the factory setting.

• See also the information on →  28.

Modbus No.

Device status message

(local display)

Cause

Register:

6859

Data type:

Integer

Register:

6821

Data type:

String (18 byte)

Response to a fault message:

The value "NaN" (not a number) is transmitted to the Modbus master instead of the current measured value.

1 SYSTEM OK

No. # 0xx → Hardware error

2 CRITICAL FAIL.

–

3

4

AMP HW

EEPROM

AMP SW

EEPROM

Depicted on the local display:

S = System error

$

= Fault message (with an effect on the outputs)

! = Notice message (without any effect on the outputs)

There is no error present in the device

001 S: CRITICAL FAILURE

$

: # 001

011 S: AMP HW EEPROM

$

: # 011

012 S: AMP SW EEPROM

$

: # 012

Serious device error.

Amplifier:

Defective EEPROM.

Amplifier:

Error accessing EEPROM data.

11

12

SENSOR

HW DAT

SENSOR

SW DAT

031 S: SENSOR HW DAT

$

: # 031

032 S: SENSOR SW DAT

$

: # 032

Remedy / spare part

Replace the amplifier board.


The EEPROM data blocks in which an error has occurred are displayed in the

"TROUBLESHOOTING" function.

Press ENTER to acknowledge the errors in question; default values are automatically inserted instead of the erroneous parameter values.

Sensor DAT:

1. S-DAT is defective.

2. S-DAT is not plugged into the amplifier board or is missing.

Sensor DAT:

Error accessing the calibration values stored in the S-DAT.

!

Note!

The measuring device has to be restarted if an error has occurred in a totalizer block ( → also error No. 111 / CHECKSUM TOTAL.).

1. Replace the S-DAT.

Check the spare part set number to ensure that the new, replacement DAT is compatible with the measuring electronics.

2. Plug the S-DAT into the amplifier board.

1. Check whether the S-DAT is correctly plugged into the amplifier board.

2. Replace the S-DAT if it is defective.

Before replacing the DAT, check that the new, replacement DAT is compatible with the measuring electronics. Check the:

– Spare part set number

– Hardware revision code

3. Replace measuring electronics boards if necessary.

Endress+Hauser 69


Modbus No.


(local display)

Cause Remedy / spare part

Register:

6859

Data type:

Integer

13

Register:

6821

Data type:

String (18 byte)

TRANSM.

HW-DAT

14 TRANSM.

SW-DAT

041 S: TRANSM. HW DAT

$

: # 041

042 S: TRANSM. SW DAT

$

: # 042

Transmitter DAT:

1. T-DAT is defective.

2. T-DAT is not plugged into the amplifier board or is missing.

Transmitter DAT:

Error accessing the adjustment values stored in the T-DAT.

1. Replace the T-DAT.

Check the spare part set number to ensure that the new, replacement DAT is compatible with the measuring electronics.

2. Plug the T-DAT into the amplifier board.

1. Check whether the T-DAT is correctly plugged into the amplifier board.

2. Replace the T-DAT if it is defective.





No. # 1xx → So ft ware error

143 A/C SW

COMPATIB.

121 S: A / C COMPATIB.

!: # 121

Due to different software versions,

I/O board and amplifier board are only partially compatible (possibly restricted functionality).

Module with lower software version has either to be updated by FieldCare with the required software version or the module has to be replaced.

!

Note!

– This message is only listed in the error history.

– Nothing is displayed on the display.

No. # 2xx → Error in DAT / no communication

22

23

LOAD T-DAT

SAVE T-DAT

205 S: LOAD T-DAT

!: # 205

206 S: SAVE T-DAT

!: # 206

27

28

30

COMMUNIC.

SENS

COMMUNIC.

I/O

POWER

BRK.DWN

Transmitter DAT:

Data backup (downloading) to T-

DAT failed, or error when accessing (uploading) the calibration values stored in the T-

DAT.

251 S: COMMUNICATION

I/O

$

: # 251

261 S: COMMUNICATION

I/O

$

: # 261

271 S: POWER BRK.

DOWN

$

: # 271

Internal communication fault on the amplifier board.

No data reception between amplifier and I/O board or faulty internal data transfer.

Power supply interrupted.

Error message appears during device startup in custody transfer mode after a power failure.

1. Check whether the T-DAT is correctly plugged into the amplifier board.

2. Replace the T-DAT if it is defective.






Check the BUS contacts.

Confirm with the ENTER key or reset via the auxiliary input (status input).

70 Endress+Hauser


Modbus No.


(local display)

Register:

6859

Data type:

Integer

Register:

6821

Data type:

String (18 byte)

No. # 3xx → System limits exceeded

131 to 134 STACK CUR.

OUT n

135 to 138 STACK FREQ.

139 to 142 STACK PULSE n

39 to 42

43 to 46

47 to 50

OUT n

339 to

342

343 to

346

347 to

350

S: STACK CUR OUT n

$

: # 339…342

S: STACK FREQ. OUT n

$

: # 343…346

Cause

The temporarily buffered flow portions (measuring mode for pulsating flow) could not be cleared or output within 60 seconds.

S: STACK PULSE OUT n

$

: # 347…350

The temporarily buffered flow portions (measuring mode for pulsating flow) could not be cleared or output within 60 seconds.

RANGE CUR.

OUT n

RANGE FREQ.

OUT n

RANGE PULSE n

351 to

354

355 to

358

S: CURRENT RANGE n

!: # 351 to 354

S: FREQ. RANGE n

!: # 355 to 358

Current output:

The actual value for the flow lies outside the set limits.

Frequency output:

The actual value for the flow lies outside the set limits.

359 to

362

S: PULSE RANGE

!: # 359 to 362

Pulse output:

Pulse output frequency is out of range.

Remedy / spare part

1. Change the upper or lower limit setting, as applicable.

2. Increase or reduce flow, as applicable.

Recommendation:

– Configure the fault response of the output to

"ACTUAL VALUE", so that the temporary buffer can be cleared.

– Clear the temporary buffer by the measures described under Item 1.

1. Increase the setting for pulse weighting.

2. Increase the max. pulse frequency if the totalizer can handle a higher number of pulses.


Recommendation:

– Configure the fault response of the output to

"ACTUAL VALUE", so that the temporary buffer can be cleared.

– Clear the temporary buffer by the measures described under Item 1.





1. Increase the setting for pulse weighting.

2. When selecting the pulse width, choose a value that can still be processed by a connected counter (e.g. mechanical counter,

PLC etc.).

Determine the pulse width:

– Version 1: Enter the minimum duration that a pulse must be present at the connected counter to ensure its registration.

– Version 2: Enter the maximum (pulse) frequency as the half "reciprocal value" that a pulse must be present at the connected counter to ensure its registration.

Example: The maximum input frequency of the connected counter is 10 Hz.

The pulse width to be entered is:

1

2.10 Hz

= 50 ms

3. Reduce flow.

A0004437

Endress+Hauser 71


Modbus

Register:

6859

Data type:

Integer

52 to 53

53

54

55

56

57

58

59

60

73

76

77

No.


(local display)

Register:

6821

Data type:

String (18 byte)

LOW FREQ. LIM.

379 S: LOW FREQ. LIM

$

: # 379

UPPER FREQ.

LIM.

380 S: UPPER FREQ. LIM

$

: # 380

FLUIDTEMP.

MIN.

FLUIDTEMP.

MAX.

CARR.TEMP.

MIN.

CARR.TEMP.

MAX.

INL. SENS DEF

SEN. ASY.

EXCEED

DOWN-UPLOAD

ACTIVE

OSC.AMP.LIM

TUBE NOT OSC.

381 S: FLUIDTEMP.MIN.

$

: # 381

382 S: FLUIDTEMP.MAX.

$

: # 382

383 S: CARR.TEMP.MIN

$

: # 383

384 S: CARR.TEMP.MAX

$

: # 384

385 S: INL.SENS.DEF.

$

: # 385

OUTL. SENS. DEF 386 S: OUTL.SENS.DEF.

$

: # 386

387 S: SEN.ASY.EXCEED

$

: # 387

61 to 62 AMP. FAULT CH2

AMP. FAULT CH3

388 to

390

S: AMP. FAULT

$

: # 388…390

No. # 5xx → Application error

72 SW-DOWNLOAD 501 S: SW.-UPDATE ACT.

!: # 501

502 S: UP-/DOWNLOAD

ACT.

!: # 502

586 S: OSC. AMP. LIMIT

$

: # 586

587 S: TUBE OSC. NOT

$

: # 587


The measuring tube oscillation frequency is outside the permitted range.

Causes:

– Measuring tube damaged

– Sensor defective or damaged

The temperature sensor on the measuring tube is likely defective.

Contact your Endress+Hauser service organization.

The temperature sensor on the carrier tube is likely defective.

One of the measuring tube exciter coils (inlet) is likely defective.

One of the measuring tube exciter coils (outlet) is likely defective.

One of the measuring tube exciter coils is likely defective.

Amplifier error

Check the following electrical connections before you contact your Endress+Hauser service organization:

– Verify that the sensor signal cable connector is correctly plugged into the amplifier board.

– Remote version:

Check sensor and transmitter terminal connections No. 9 and 10.



– Remote version:

Check sensor and transmitter terminal connections No. 11 and 12.



– Remote version:

Check sensor and transmitter terminal connections No. 4, 5, 6 and 7.

Contact your Endress+Hauser service organization.

New amplifier or communication

(I/O module) software version is loaded. Currently no other functions are possible.

Up- or downloading the device data via configuration program.

Currently no other functions are possible.

The fluid properties do not allow a continuation of the measurement.

Causes:

– Extremely high viscosity

– Process fluid is very inhomogeneous (gas or solid content)

Extreme process conditions exist.

The measuring system can therefore not be started.

Wait until process is finished.

The device will restart automatically.

Wait until process is finished.

Change or improve process conditions.

Change or improve process conditions.

72 Endress+Hauser


Modbus

Register:

6859

Data type:

Integer

78

No.


(local display)

Register:

6821

Data type:

String (18 byte)

GAIN RED.IMPOS

588 S: GAIN RED.IMPOS

$

: # 588


Overdriving of the internal analog to digital converter.

Possible causes are cavitations, extreme pressure shock and high flow velocity for gases.

Change or improve process conditions, e.g. by reducing the flow velocity.

A continuation of the measurement is no longer possible.

No. # 6xx → Simulation mode active

79 POS.ZERO -RET.

601 S: POSITIVE ZERO

RETURN

!: # 601

80 to 83

84 to 87

Positive zero return active.

" Caution!

This message has the highest display priority.

Switch off positive zero return.

Simulation current output active.

Switch off simulation.

SIM. CURR. OUT n 611 to

614

SIM FREQ. OUT 1 to 4

621 to

624

S: SIM. CURR. OUT. n

!: # 611 to 614

S: SIM. FREQ. OUT n

!: # 621 to 624

Simulation frequency output active.


88 to 91 SIM. PULSE n 631 to

634

104 to 107 SIM. STATUS IN n 671 to

674

108

109

SIM. FAILSAFE

SIM

MEASURAND

S: SIM. PULSE n

!: # 631 to 634

S: SIM. STAT. IN n

!: # 671 to 674

691 S: SIM. FAILSAFE

$

: # 691

Simulation pulse output active.

Simulation status input active.

Simulation of response to error

(outputs) active.




692 S: SIM. MEASURAND

!: # 692

Simulation of measuring variables

(e.g. mass flow).


150 DEV. TEST ACT.

698 S: DEV. TEST AKT.

!: # 698

The measuring device is being checked on site via the test and simulation device.

-

Endress+Hauser 73


11.3

Process error messages

!

Note!

• The listed error message types below correspond to the factory setting.

• See also the information on →  28.

Modbus No.


(local display)


Register:

6859

Data type:

Integer

Register:

6821

Data type:

String (18 byte)

Response to a fault message:

The value "NaN" (not a number) is transmitted to the Modbus master instead of the current measured value.

Depicted on the local display:

S = System error

$

= Fault message (with an effect on the outputs)

! = Notice message (without any effect on the outputs)

1 SYSTEM OK

No. # 7xx → Other process errors

–

111 EMPTY PIPE

There is no error present in the device

700 P: EMPTY PIPE

!: # 700

The process fluid density is outside the upper or lower limit values set in the "EPD" function.

Causes:

– Air in the measuring tube

– Partly filled measuring tube

1. Ensure that there is no gas content in the process liquid.

2. Adapt the values in the "EPD RESPONSE TIME" function to the current process conditions.

112 EXC. CURR. LIM 701 P: EXC. CURR. LIM

!: # 701

113

114

115

116

124

FLUID INHOM.

NOISE LIM. CH0

NOISE LIM. CH1

FLOW LIMIT

ADJ. ZERO FAIL.

702 P: FLUID INHOM.

!: # 702

703 P: NOISE LIM. CH0

!: # 703

704 P: NOISE LIM. CH1

!: # 704

705 P: FLOW LIMIT

$

: # 705

731 P: ADJ. ZERO FAIL

!: # 731

The maximum current value for the measuring tube exciter coils has been reached, since certain process fluid characteristics are extreme, e.g. high gas or solid content.

The device continues to work correctly.

In particular with outgassing fluids and/or increased gas content, the following measures are recommended to increase system pressure:

1. Install the device at the outlet side of a pump.

2. Install the device at the lowest point of an ascending pipeline.

3. Install a flow restriction, e.g. reducer or orifice plate, downstream from the device.

Frequency control is not stable, due to inhomogeneous process fluid, e.g. gas or solid content.

Overdriving of the internal analog to digital converter.

Causes:

– Cavitation

– Extreme pressure pulses

– High gas flow velocity

A continuation of the measurement is still possible.

Change or improve process conditions, e.g. by reducing the flow velocity.

The mass flow is too high.

The electronics' measuring range will be exceeded.

Reduce flow.

The zero point adjustment is not possible or has been canceled.

Make sure that zero point adjustment is carried out at "zero flow" only (v = 0 m/s).

74 Endress+Hauser


11.4

Process errors without messages

Symptoms Rectification

Comment:

You may have to change or correct certain settings of the function matrix in order to rectify faults.

The functions outlined below, such as DISPLAY DAMPING, are described in detail in the "Description of Device Parameters" manual.

Measured value reading fluctuates even though flow is steady.

1. Check the fluid for presence of gas bubbles.

2. "TIME CONSTANT" function → increase value ( → OUTPUTS / CURRENT OUTPUT / CONFIGURATION)

3. "DISPLAY DAMPING" function → increase value ( → USER INTERFACE / CONTROL / BASIC CONFIG.)

Flow values are negative, even though the fluid is flowing forwards through the pipe.

Change the "INSTALLATION DIRECTION SENSOR" function accordingly.

Measured-value reading or measured-value output pulsates or fluctuates, e.g. because of reciprocating pump, peristaltic pump, diaphragm pump or pump with similar delivery characteristic.

Run the "Pulsating Flow" Quick Setup →  45.

If the problem persists despite these measures, a pulsation damper will have to be installed between pump and measuring device.

There are differences between the flowmeters internal totalizer and the external metering device.

This symptom is due primarily to backflow in the piping, because the pulse output cannot subtract in the

"STANDARD" or "SYMMETRY" measuring modes.

Measured value reading shown on display, even though the fluid is at a standstill and the measuring tube is full.

The problem can be solved as follows:

Allow for flow in both directions. Set the "MEASURING MODE" function to "PULSATING FLOW" for the pulse output in question.

1. Check the fluid for presence of gas bubbles.

2. Activate the "ON-VAL. LF-CUTOFF" function, i.e. enter or increase the value for the low fl ow cut o ff ( → BASIC

FUNCTION / PROCESSPARAMETER / CONFIGURATION).

The error cannot be eliminated or another error pattern is present.

In these instances, please contact your Endress+Hauser service organization.

The following solutions are possible:

Request the services of an Endress+Hauser service technician

If you request the services of a service technician, please be ready with the following information:

– Brief error description

– Nameplate specifications: order code and serial number

→  6

Return the devices to Endress+Hauser

Procedures must be carried out before you return a flowmeter to Endress+Hauser for repair or calibration →  5,

→  84.

Replace the transmitter electronics

Parts of the measuring electronics defective →

order spare part →  84

Endress+Hauser 75


11.5

Response of outputs to errors

!

Note!

The failsafe mode of totalizers, current, pulse and frequency outputs can be customized by means of various functions in the function matrix. Detailed information → "Description of

Device Parameters" manual.

You can use positive zero return to set the signals of the current, pulse and status outputs to their fallback value, for example when measuring has to be interrupted while a pipe is being cleaned. This function takes priority over all other device functions. Simulations, for example, are suppressed.

Failsafe mode of outputs and totalizers

Process/system error is present

" Caution!

System or process errors defined as "Notice messages" have no effect whatsoever on the inputs and outputs.

See also the information on

→  28.

Positive zero return is activated

Modbus RS485 In the event of faults, the value "NaN" (not a number) is transmitted instead of the current measured value.

–

Current output MIN. CURRENT

The current output will be set to the lower value of the signal on alarm level depending on the setting selected in the CURRENT SPAN ( → "Description of Device

Parameters" manual).

MAX. CURRENT

The current output will be set to the upper value of the signal on alarm level depending on the setting selected in the CURRENT SPAN ( → "Description of Device

Parameters" manual).

HOLD VALUE

Measured value display on the basis of the last saved value preceding occurrence of the fault.

ACTUAL VALUE

Measured value display on the basis of the current flow measurement. The fault is ignored.

Output signal corresponds to "zero flow"

Output signal corresponds to "zero flow" Pulse output FALLBACK VALUE

Signal output → no pulses

HOLD VALUE

Last valid value (preceding occurrence of the fault) is output.

ACTUAL VALUE

Fault is ignored, i.e. normal measured value output on the basis of ongoing flow measurement.

Frequency output FALLBACK VALUE

Signal output → 0 Hz

FAILSAFE VALUE

Output of the frequency specified in the FAILSAFE VALUE function.

HOLD VALUE

Last valid value (preceding occurrence of the fault) is output.

ACTUAL VALUE

Fault is ignored, i.e. normal measured value output on the basis of ongoing flow measurement.

Output signal corresponds to "zero flow"

76 Endress+Hauser


Failsafe mode of outputs and totalizers

Totalizer

Process/system error is present Positive zero return is activated

STOP

The totalizers are paused until the fault is rectified.

ACTUAL VALUE

The fault is ignored. The totalizer continues to count in accordance with the current flow value.

HOLD VALUE

The totalizers continue to count the flow in accordance with the last valid flow value

(before the error occurred).

Totalizer stops

Endress+Hauser 77


11.6

Spare parts

The previous sections contain detailed troubleshooting instructions

→  68.

The measuring device, moreover, provides additional support in the form of continuous selfdiagnosis and error messages.

Fault rectification can entail replacing defective components with tested spare parts. For an overview of the spare parts that can be delivered

→  39.

!

Note!

Spare parts can be ordered directly from your Endress+Hauser representative by providing

the serial number printed on the transmitter's nameplate ( →  6).

Spare parts are shipped as sets comprising the following parts:

• Spare part

• Additional parts, small items (threaded fasteners etc.)

• Mounting instructions

• Packaging

1

2

5

6

1

2

3

4

1

2

3

4

1

2

3

4

IN

PU

T/O

UTP

UT

3

INP

UT/O

UTPU

T

4

3

1

2

3

4

4

7

A0006810

Fig. 39:

5

6

7

3

4

1

2

Spare parts for transmitter (field and wall-mount housings)

Power unit board (85 to 260 V AC, 20 to 55 V AC, 16 to 62 V DC)

Amplifier board

I/O board (COM module)

Pluggable input/output submodules

S-DAT (sensor data memory)

T-DAT (transmitter data memory)

Display module

78 Endress+Hauser


11.6.1 Removing and installing printed circuit boards

Field housing

#

Warning!

• Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the power supply is switched off before you remove the cover of the electronics compartment.

• Risk of damaging electronic components (ESD protection).

Static electricity can damage electronic components or impair their operability. Use a workplace with a grounded working surface purposely built for electrostatically sensitive devices.

• If you cannot guarantee that the dielectric strength of the measuring device is maintained in the following steps, then an appropriate inspection must be carried out in accordance with the manufacturer’s specifications.

"

Caution!

Use only original Endress+Hauser parts.

Installing and removing the boards

→  40:


2. Remove the local display (1) as follows:

– Press in the latches (1.1) at the side and remove the display module.

– Disconnect the ribbon cable (1.2) of the display module from the amplifier board.

3. Remove the screws and remove the cover (2) from the electronics compartment.

4. Remove power unit board (4) and I/O board (6):

Insert a thin pin into the hole (3) provided for the purpose and pull the board clear of its holder.

5. Remove submodules (6.1) (optional):

No tools are required for removing the submodules (outputs) from the I/O board.

Installation is also a no-tools operation.

" Caution!

Only certain combinations of submodules on the I/O board are permissible

→  19.

The individual slots are marked and correspond to certain terminals in the connection compartment of the transmitter:

– Slot "INPUT / OUTPUT 3" = Terminals 22/23

– Slot "INPUT / OUTPUT 4" = Terminals 20/21

6. Remove amplifier board (5):

– Disconnect the plug of the sensor signal cable (5.1) including S-DAT (5.3) from the board.

– Gently disconnect the plug of the excitation current cable (5.2) from the board, i.e. without moving it back and forward.

– Insert a thin pin into the hole (3) provided for the purpose and pull the board clear of its holder.


Endress+Hauser 79


4

3

5.1

5.4

5.3

3

5.2

5

3

1

2

3

4

1

2

3

4

1

2

3

4

UTP

UT

3

IN

PUT/O

IN

PU

T/O

UTPU

T

4

1.2

2

1

1.1

Fig. 40:

1

1.1

1.2

2

3

4

5

5.1

5.2

5.3

5.4

6

6.1

Field housing: removing and installing printed circuit boards

Local display

Latch

Ribbon cable (display module)

Screws of electronics compartment cover

Aperture for installing/removing boards

Power unit board

Amplifier board

Signal cable (sensor)

Excitation current cable (sensor)



I/O board (flexible assignment)

Optional: pluggable submodules (current output, pulse/frequency output and relay output)

6

1

2

3

4

6.1

A0006811

80 Endress+Hauser


Wall-mount housing

#

Warning!

• Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the power supply is switched off before you remove the cover of the electronics compartment.

• Risk of damaging electronic components (ESD protection).

Static electricity can damage electronic components or impair their operability. Use a workplace with a grounded working surface purposely built for electrostatically sensitive devices.

• If you cannot guarantee that the dielectric strength of the measuring device is maintained in the following steps, then an appropriate inspection must be carried out in accordance with the manufacturer’s specifications.

"

Caution!


Installing and removing the boards

→  41:

1. Remove the screws and open the hinged cover (1) of the housing.

2. Remove the screws securing the electronics module (2). Then push up electronics module and pull it as far as possible out of the wall-mount housing.

3. Disconnect the following cable plugs from amplifier board (7):

– Sensor signal cable plug (7.1) including S-DAT (7.3)

– Unplug excitation current cable (7.2):

Gently disconnect the plug, i.e. without moving it back and forward.

– Ribbon cable plug (3) of the display module.

4. Remove the cover (4) from the electronics compartment by loosening the screws.

5. Remove the boards (6, 7, 8):

Insert a thin pin into the hole (5) provided for the purpose and pull the board clear of its holder.

6. Remove submodules (8.1) (optional):

No tools are required for removing the submodules (outputs) from the I/O board.

Installation is also a no-tools operation.

" Caution!

Only certain combinations of submodules on the I/O board are permissible

→  19.

The individual slots are marked and correspond to certain terminals in the connection compartment of the transmitter:

Slot "INPUT / OUTPUT 3" = Terminals 22/23

Slot "INPUT / OUTPUT 4" = Terminals 20/21


Endress+Hauser 81

Troubleshooting

82


1

5

7.4

7.1

7.3

5

7.2

6

2

3

7

5

1

2

3

4

1

2

3

4

1

2

3

4

3

IN

PU

T/O

UTPUT

IN

PU

T/O

UTPU

T

4

8

1

2

3

4

8.1

4

3

Fig. 41:

3

4

1

2

5

6

7

7.1

7.2

7.3

7.4

8

8.1

Wall-mount housing: removing and installing printed circuit boards

Housing cover

Electronics module

Ribbon cable (display module)

Screws of electronics compartment cover

Aperture for installing/removing boards

Power unit board

Amplifier board

Signal cable (sensor)

Excitation current cable (sensor)



I/O board (flexible assignment)

Optional: pluggable submodules (current output, pulse/frequency output and relay output)

A0006812

Endress+Hauser


11.6.2 Replacing the device fuse

#

Warning!


The main fuse is on the power unit board →  42.

Replace the fuse as follows:


2. Remove the power unit board →  79.

3. Remove the protection cap (1) and replace the device fuse (2).

Only use the following fuse type:

– 20 to 55 V AC / 16 to 62 V DC → 2.0 A slow-blow / 250 V; 5.2 × 20 mm

– Power supply 85 to 260 V AC → 0.8 A slow-blow / 250 V; 5.2 × 20 mm

– Ex-rated devices → Ex documentation

"


Caution!


Endress+Hauser

1

2

Fig. 42:

1

2

Replacing the device fuse on the power unit board

Protective cap

Device fuse

A0001148

83


11.7

Return

The measuring device must be returned if repairs or a factory calibration are required, or if the wrong measuring device has been ordered or delivered. According to legal regulations,

Endress+Hauser, as an ISO-certified company, is required to follow certain procedures when handling returned products that are in contact with medium.

To ensure swift, safe and professional device returns, please read the return procedures and conditions on the Endress+Hauser website at www.services.endress.com/return-material .

11.8

Disposal

Observe the regulations applicable in your country.

11.9

Software history

Date

11.2015

01.2010

Software version

3.06.xx

3.06.00

Changes to software

Original software

Original software

Operating Instructions

71240744/ 13.15

71100107/ 10.09

84 Endress+Hauser

CNGmass DCI Modbus RS485 Technical data

12 Technical data

12.1

Applications

→  4

12.2

Function and system design

Mass flow measurement by the Coriolis principle

→  6

Measuring principle

Measuring system

Measured variable

12.3

Input

• Mass flow (proportional to the phase difference between two sensors mounted on the measuring tube which record differences in the pipe oscillation geometry during flow)

• Volume flow (measured from the mass flow and density)

• Fluid density (proportional to the resonance frequency of the measuring tube)

• Fluid temperature (measured with temperature sensors)

Measuring ranges for Compressed Natural Gas (CNG), non-custody transfer operation.

Measuring range

Operable flow range

DN  min(F)

to  max(F)

[mm]

8

15

25

[in]

³ ⁄ ₈ "

½"

1"

[kg/min]

0 to 30

0 to 80

0 to 150

[lb/min]

0 to 66

0 to 175

0 to 330

!

Note!

The values of the corresponding custody transfer certificate apply for custody transfer operation.

1 : 100

Input signal Status input (auxiliary input)

U = 3 to 30 V DC, R i

= 3 k Ω , galvanically isolated.

Switching level: 3 to 30 V DC, polarity-independent.

Configurable for: totalizer reset, positive zero return, error message reset, start zero point adjustment.

Output signal

12.4

Output

Current output

Active/passive selectable, galvanically isolated, time constant selectable (0.05 to 100 s), full scale value selectable, temperature coefficient: typically 0.005% o.r. / °C, resolution: 0.5 μ A

• Active: 0/4 to 20 mA, R

L

< 700 Ω

• Passive: 4 to 20 mA; supply voltage V

S

: 18 to 30 V DC; R i

≥ 150 Ω o.r. = of reading

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Technical data

Signal on alarm

Switching output

Load

Galvanic isolation

Terminal assignment

Supply voltage


Pulse/frequency output

Active/passive can be selected, galvanically isolated

• Active: 24 V DC, 25 mA (max. 250 mA during 20 ms), R

L

> 100 Ω

• Passive: open collector, 30 V DC, 250 mA

• Frequency output: end frequency 2 to 10000 Hz (f max

= 12500 Hz), on/off ratio 1:1, pulse width max. 2 s

• Pulse output: pulse value and pulse polarity selectable, pulse width configurable (0.05 to

2000 ms)

Modbus RS485

• Modbus device type: slave

• Address range: 1 to 247

• Functions codes supported: 03, 04, 06, 08, 16, 23

• Broadcast: supported with the function codes 06, 16, 23

• Physical interface: RS485 in accordance with standard EIA/TIA-485

• Baudrate supported: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200 Baud

• Transmission mode: RTU or ASCII

• Response time:

Direct data access = typically 25 to 50 ms

Auto-scan buffer (data area) = typically 3 to 5 ms

• Possible output combinations

→  19

Current output

Failsafe mode selectable (for example, according to NAMUR Recommendation NE 43)

Pulse/frequency output

Failsafe mode selectable

Relay output

De-energized in the event of fault or power supply failure

Modbus RS485

If an error occurs, the value NaN (not a number) is output for the process variables.

Relay output

Normally closed (NC or break) or normally open (NO or make) contacts available (factory setting: relay 1 = normally open), max. 30 V / 0.5 A AC; 60 V / 0.1 A DC, galvanically isolated.

→ "Output signal"

All circuits for inputs, outputs, and power supply are galvanically isolated from each other.

12.5

Power supply

→  19

85 to 260 V AC, 45 to 65 Hz

20 to 55 V AC, 45 to 65 Hz

16 to 62 V DC

86 Endress+Hauser


Power consumption

Power supply failure

Electrical connections

Potential equalization

Cable entries

Cable specifications

AC: < 15 VA (including sensor)

DC: < 15 W (including sensor)

Switch-on current

• max. 13.5 A (< 50 ms) at 24 V DC

• max. 3 A (< 5 ms) at 260 V AC

Lasting min. 1 power cycle:

• EEPROM or HistoROM T-DAT saves measuring system data if power supply fails.

• HistoROM/S-DAT: exchangeable data storage chip which stores the data of the sensor

(nominal diameter, serial number, calibration factor, zero point etc.)

→  16

No measures necessary.

For explosion-protected equipment → separate Ex-documentation supplied

Power supply and signal cables (inputs/outputs):

• Cable entry M20 × 1.5 (8 to 12 mm / 0.31 to 0.47")

• Threads for cable entries, ½" NPT, G ½"

Connecting cable for remote version:

• Cable entry M20 × 1.5 (8 to 12 mm / 0.31 to 0.47")

• Threads for cable entries, ½" NPT, G ½"

Remote version

→  17

Reference operating conditions

12.6

Performance characteristics

• Error limits following ISO 11631

• Water, typically +15 to +45 °C (+59 to +113 °F); 2 to 6 bar (29 to 87 psi)

• Specification as per calibration protocol ±5 °C (±9 °F) and ±2 bar (±30 psi)

• Data on the measured error based on accredited calibration rigs traced back to ISO 17025

To obtain measured errors, use the Applicator sizing tool

Applicator

:

→  78.

Maximum measured error o.r. = of reading

Mass flow (gases)

• ±0.5% of the quantity filled in typical CNG fueling with the coefficients determined during factory calibration.

Mass flow (liquids)

• ±0.2% ± [(zero point stability ÷ measured value) · 100]% o.r.

Density

±20 kg/m 3 (±0.02 SGU) ) or ±1 kg/m 3 (±0.001 SGU) after FDC (field density calibration)

Temperature

±0.5 °C ± 0.005 · T °C (±1 °F ± 0.003 · (T - 32) °F)

Endress+Hauser 87

Technical data

Repeatability

Influence of medium temperature


Zero point stability

8

15

25

DN

³ ⁄ ₈ "

½"

1"

[kg/h]

0.200

0.650

1.80

Zero point stability

[lb/min]

0.007

0.024

0.066

Example maximum measured error mass flow (liquids)

E [%]

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

0 10 20 30 40 50 60 70 80 90 100 Q [%]

Fig. 43: E = Error: Maximum measured error as % o.r.

Q = Flow rate as %

A0027161

Calculation example

Given:

• DN 25 (1")

• Mass flow (liquids) = 5000 kg/h (183.75 lb/min)

Max. measured error:

• ±0.2% ± [(zero point stability ÷ measured value) · 100]% o. r.

• ±0.2% ± 1.80 kg/h (0.066 lb/min) ÷ 5000 kg/h (183.75 lb/min) · 100% = ±0.236% o.r. o.r. = of reading

Mass flow (gases)

±0.25% of the quantity filled in typical CNG fueling.

Mass flow (liquids)

±0.1% [½ · (zero point stability ÷ measured value) · 100]% o.r.

Density

±10 kg/m 3 (±0.01 SGU) or ±0.5 kg/m 3 (±0.0005 SGU) after FDC (field density calibration)

Temperature

±0.25 °C ± 0.0025 · T °C (±0.45 °F ± 0.0015 · (T–32) °F)

When there is a difference between the temperature for zero point adjustment and the process temperature, the typical measured error is ±0.0003% of the full scale value / °C.

88 Endress+Hauser


Influence of medium pressure

Installation instructions

The following section shows the effect on accuracy of mass flow due to a difference between calibration pressure and process pressure is negligible.

12.7

Installation

→  11

Connection cable length, remote version

Max. 20 m (max. 66 ft)

12.8

Environment

Ambient temperature range

Sensor and transmitter:

• Standard: –20 to +60 °C (–4 to +140 °F)

• Optional: –40 to +60 °C (–40 to +140 °F)

!

Note!

• Install the device in a shady location. Avoid direct sunlight, particularly in warm climatic regions.

• At ambient temperatures below –20 °C (–4 °F), the readability of the display may be impaired.

Storage temperature –40 to +80 °C (–40 to +175 °F), preferably at +20 °C (+68 °F)

Degree of protection

Shock resistance

Vibration resistance

Electromagnetic compatibility (EMC)

Standard: IP 67 (NEMA 4X) for transmitter and sensor

According to IEC/EN 60068-2-31

According to IEC/EN 60068-2-31

As per IEC/EN 61326

12.9

Process

–50 to +150 °C (–58 to +302 °F) Medium temperature range

Limiting medium pressure range

Max. 350 bar (5080 psi)

Pressure-temperature ratings

Rupture disk

An overview of the Pressure-temperature ratings for the process connections is provided in the "Technical Information" document.

Triggering pressure in the housing 10 to 15 bar (145 to 218 psi), →  11 "Special mounting

instructions".

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Technical data CNGmass DCI Modbus RS485

Flow rate

Local display

→  85, "Measuring range"

Design / dimensions

12.10 Mechanical construction

The dimensions and lengths of the sensor and transmitter are provided in the separate

"Technical Information" document on the measuring device in question. This can be downloaded as a PDF file from www.endress.com. A list of the "Technical Information" documents available is provided in the "Documentation" section

→  92.

Weight

Material

DN in mm (in)

Weight in kg

Weight in lb

8 (³ ⁄ ₈ ")

8.9

19.6

15 (½")

10.8

23.8

25 (1")

11.8

26.0

Transmitter housing:

Powder coated die-cast aluminum

Housing of sensor/secondary containment

Acid-resistant and alkali-resistant external surface, stainless steel 1.4301 (304)

Process connections

Stainless steel 1.4404 (316)

Measuring tubes

Stainless steel 1.4435 (316L)

Process connections Cylindrical internal thread BSP (G) in accordance with ISO 228-1 with sealing surfaces in accordance with DIN 3852-2/ISO 1179-1:

• G ½" for DN 08

• G ¾" for DN 15

• G 1" for DN 25

!

Note!

Sealed with profile seal in accordance with DIN 3869 or copper disk or steel seal disk with plastic lip.

12.11 Operability

Display elements

• Liquid crystal display: illuminated, four lines with 16 characters per line

• Selectable display of different measured values and status variables

• At ambient temperatures below –20 °C (–4 °F), the readability of the display may be impaired.

Control elements

• Local operation with three optical sensors (  )

• Application specific Quick Setup menus for straightforward commissioning

90 Endress+Hauser


Language groups Language groups available for operation in different countries:

• Western Europe and America (WEA): English, German, Spanish, Italian, French, Dutch and Portuguese

• Eastern Europe/Scandinavia (EES): English, Russian, Polish, Norwegian, Finnish, Swedish,

Czech

• South and East Asia (SEA): English, Japanese, Indonesian

• China (CN): English, Chinese

!

Note!

You can change the language group via the operating program FieldCare.

Remote operation Operation via Modbus protocol.

CE mark

C-tick mark

Ex approval

12.12 Certificates and approvals

The measuring system is in conformity with the statutory requirements of the EC Directives.

Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.

The measuring system meets the EMC requirements of the Australian Communications and

Media Authority (ACMA).

Information about currently available Ex versions (ATEX, NEC/CEC etc.) can be supplied by your Endress+Hauser representative on request. All explosion protection data are given in a separate documentation, which is also available upon request

→  92.

→  60.

Approval for custody transfer

Modbus certification

Pressure Equipment

Directive

The measuring device meets all the requirements of the Modbus/TCP conformity test and has the "Modbus/TCP Conformance Test Policy, Version 2.0". The measuring device has successfully passed all the test procedures carried out and is certified by the "Modbus/TCP

Conformance Test Laboratory" of the University of Michigan.

The measuring devices can be ordered with or without PED (Pressure Equipment Directive).

If a device with PED is required, this must be ordered explicitly. For devices with nominal diameters less than or equal to DN 25 (1"), this is neither possible nor necessary.

• With the identification PED/G1/III on the sensor nameplate, Endress+Hauser confirms conformity with the "Basic safety requirements" of Appendix I of the Pressure Equipment

Directive 97/23/EC.

• Devices with this identification (with PED) are suitable for the following types of fluid:

– Fluids of Group 1 and 2 with a steam pressure greater than, or smaller and equal to 0.5 bar (7.3 psi)

– Unstable gases

• Devices without this identification (without PED) are designed and manufactured according to good engineering practice. They correspond to the requirements of Art. 3,

Section 3 of the Pressure Equipment Directive 97/23/EC. Their application is illustrated in

Diagrams 6 to 9 in Appendix II of the Pressure Equipment Directive 97/23/EC.

Endress+Hauser 91

Technical data

Other standards and guidelines


• EN 60529

Degrees of protection by housing (IP code)

• EN 61010-1

Safety requirements for electrical equipment for measurement, control and laboratory use

• IEC/EN 61326

Electromagnetic compatibility (EMC requirements)

• OIML R139

Suitability for custody transfer measurement

12.13 Accessories/spare parts

→  66

12.14 Documentation

• Flow measurement (FA00005D/06)

• Description of Device Parameters (GP00003D/06)

• Operating Instructions Modbus RS485 (BA00140D/06)

• Technical Information (TI00098D/06)

• Ex-Supplementary documentation ATEX (II2G): (XA00135D/06)

• Ex-Supplementary documentation NEC/CEC (Div. 1): (XA00137D/06)

• Ex-Supplementary documentation NEPSI (Zone 1, Zone 21): (XA00138D/06)

92 Endress+Hauser


Index

A

Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Applicator (Auslege-Software) . . . . . . . . . . . . . . . . . . . . 66

Approval by (the Standards Authorities) . . . . . . . . . . . . 60

Approval for custody transfer . . . . . . . . . . . . . . . . . . . . . 60

Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Auto-scan buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

B

Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Broadcast message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Byte transmission sequence . . . . . . . . . . . . . . . . . . . . . . . 34

C

Cable entries

Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Cable specifications

MODBUS RS485. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Remote version connecting cable. . . . . . . . . . . . . . . . 18

CE mark (Declaration of Conformity) . . . . . . . . . . . . . . . . . 9

Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Cleaning

External cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Code entry (function matrix) . . . . . . . . . . . . . . . . . . . . . . 27

Commissioning

Current output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Quick Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Relay output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Zero point adjustment. . . . . . . . . . . . . . . . . . . . . . . . . 58

Connection

See Electrical connection

Current output

Configuration active/passive . . . . . . . . . . . . . . . . . . . 55

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Custody transfer measurement . . . . . . . . . . . . . . . . . . . . 60

Approval for custody transfer . . . . . . . . . . . . . . . . . . 60

Definition of terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Disabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Disabling custody transfer mode . . . . . . . . . . . . . . . . 64

Setting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Setting up custody transfer mode . . . . . . . . . . . . . . . 62

Special features of working in the custody transfer mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Verification process . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

D

Data back-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Data types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Declaration of Conformity (CE mark) . . . . . . . . . . . . . . . . . 9

Definitions of terms (custody transfer measurement) . 61

Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . . 20, 89

Designated use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4, 85

Device designation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Device parameters

See "Description of Device Parameters" manual

Endress+Hauser

Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

E

Electrical connection

Cable specifications (remote version). . . . . . . . . . . . . 18

Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Post-connection check . . . . . . . . . . . . . . . . . . . . . . . . . 21

Remote version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Error messages

Confirming error messages . . . . . . . . . . . . . . . . . . . . . 28

System error (device error) . . . . . . . . . . . . . . . . . . . . . 69

Error messages (MODBUS) . . . . . . . . . . . . . . . . . . . . . . . . 35

Error types (system and process errors). . . . . . . . . . . . . . 28

European Pressure Equipment Directive . . . . . . . . . . . . . 91

Ex approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

External cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

F

FieldCare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Frequency output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Function code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Function groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Fuse, replacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

FXA193 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

G

Galvanic isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

H

Hardware write protection. . . . . . . . . . . . . . . . . . . . . . . . . 41

HOME position (display operating mode) . . . . . . . . . . . . 23

I

Incoming acceptance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Input signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Installation conditions

Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Vibrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Installation, commissioning and operation . . . . . . . . . . . . 4

L

Length of connecting cable . . . . . . . . . . . . . . . . . . . . . . . . 89

Life Cycle Management . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Local display

See Display

M

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Master/slave communication . . . . . . . . . . . . . . . . . . . . . . 30

Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

93


Maximum measured error. . . . . . . . . . . . . . . . . . . . . . . . . 87

Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Measuring system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

MODBUS RS485

Address model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Auto-scan buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Byte transmission sequence . . . . . . . . . . . . . . . . . . . . 34

Cable specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Function code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Master/slave devices . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Max. writes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

QS Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Register address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Response times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

System architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Telegram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

N

Nameplate

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

O

Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Operation

FieldCare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Order code

Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Output signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85–86

P

Performance characteristics

Influence of medium pressure. . . . . . . . . . . . . . . . . . . 89

Influence of medium temperature . . . . . . . . . . . . . . . 88

Maximum measured error. . . . . . . . . . . . . . . . . . . . . . 87

Reference operating conditions. . . . . . . . . . . . . . . . . . 87

Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Post-installation check (checklist) . . . . . . . . . . . . . . . . . . 15

Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Power supply (supply voltage) . . . . . . . . . . . . . . . . . . . . . 86

Power supply failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Pressure Equipment Directive . . . . . . . . . . . . . . . . . . . . . . 91

Printed circuit boards (installation/removal)

Field housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Wall-mount housing . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Process error

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Programming mode

Enabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Pulsating flow

Quick Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45–46

Pulse output

See Frequency output

94

Q

Quick Setup

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Pulsating flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45–46

R

Register address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Registered trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Relay output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Repeatability (performance characteristics) . . . . . . . . . . 88

Repeated calibration due to legal metrology controls . . 60

S

Safety conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

S-DAT (HistoROM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–8

Seriennummer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Shielding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Shock resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Software

Amplifier display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Special features of working in the custody transfer mode.

60

Standards, guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Status input

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Suitability for custody transfer measurement . . . . . . . . . 60

Supply voltage (power supply). . . . . . . . . . . . . . . . . . . . . . 86

System error

Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

T

T-DAT (HistoROM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

T-DAT SAVE/LOAD (functionality) . . . . . . . . . . . . . . . . . 52

Temperature ranges

Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Transmitter

Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Installing the wall-mount housing . . . . . . . . . . . . . . . 13

Turning the field housing (aluminum). . . . . . . . . . . . 12

Transporting the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Troubleshooting and remedy. . . . . . . . . . . . . . . . . . . . . . . 68

V

Verification process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Vibration resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Vibrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11, 89

W

W@M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

See Electrical connection

Endress+Hauser


Writes (max.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Z

Zero point adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Endress+Hauser 95

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