KROHNE H250 M40 FOUNDATION FIELDBUS Owner's manual

Variable area flowmeter

Description of Foundation Fieldbus interface

Description of Foundation Fieldbus interfaceDescription of Foundation Fieldbus interface

Description of Foundation Fieldbus interface

Electronic revision: ER (SW.REV. 2.01)

H250 M40

H250 M40H250 M40

H250 M40 Supplementary Instructions

Supplementary InstructionsSupplementary Instructions

Supplementary Instructions

CONTENTS

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H250 M40

1 Device description 3

1.1 Scope of the document..................................................................................................... 3

1.2 Device version................................................................................................................... 3

1.3 Description code............................................................................................................... 5

1.4 Software revision.............................................................................................................. 6

2 Technical data 7

2.1 Technical data................................................................................................................... 7

3 Electrical connections 8

3.1 Installation in hazardous area and bus cable.................................................................. 8

3.2 Grounding of measuring section...................................................................................... 8

3.3 Foundation Fieldbus electrical connection...................................................................... 9

3.4 Cable types ..................................................................................................................... 10

3.5 Shielding and grounding ................................................................................................ 10

3.6 Topology of FF networks ................................................................................................ 11

4 Operation 12

4.1 Getting started................................................................................................................ 12

4.2 Hardware settings ..........................................................................................................13

4.3 Description of the FF block system................................................................................ 14

4.4 Abbreviations.................................................................................................................. 15

4.5 Foundation Fieldbus block interface ............................................................................. 16

4.5.1 Resource Block (RB)............................................................................................................. 16

4.5.2 Analog Input Block (AI 1, AI 2) .............................................................................................. 31

4.5.3 Proportional Integral Derivative Block (PID)........................................................................ 40

4.5.4 Integrator Block (IT).............................................................................................................. 54

4.5.5 Transducer Block (TB) .......................................................................................................... 61

5 Appendix 68

5.1 Appendix A - Relationship between TB and AI Block .................................................... 68

6 Notes 69

DEVICE DESCRIPTION

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1.1 Scope of the document

These instructions are supplementary to the standard product documentation of the signal

converter. The details depicted therein, in particular the safety information are valid and should

be adhered to. The present supplementary instructions provide additional information for the

devices when being operated and connected to a Foundation Fieldbus.

1.2 Device version

•H250 with indicator M40

•H250 with M40 indicator with display cut-out for ESK4-T

Description of the device version

1. H250/RR/M40

•Local indicator without auxiliary power

•Max. 2 limit switches, type NAMUR, NAMUR safety-oriented or transistor (3-wire)

•Electrical signal output 4...20 mA, HART

®

or Fieldbus communication

•Intrinsically safe (Ex i) or in explosion-proof enclosure (Ex d)

2. H250/RR/M40

•Additional LCD, measured value and/or flow counter

•2 configurable binary outputs, limit value or pulse output

•1 binary input, Start / Stop / Reset flow counter

•2-wire current output 4…20 mA, HART

®

communication

•Intrinsically safe (Ex i) or in explosion-proof enclosure (Ex d)

INFORMATION!

The present supplementary instruction for the signal converter with Foundation Fieldbus

interface, plus the software with the DD and CFF files are included in our scope of supply, in

addition to those items delivered for the standard device.

Figure 1-1: Device version - H250 with M40 indicator

1

DEVICE DESCRIPTION

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Optional versions:

•H250 with indicator M40 as high temperature version HT

•H250H for use in horizontal pipelines

•H250U for use in vertical fall pipes

•H250F with hygienic measuring tube design for Food & Pharma

•H250C with PTFE / TFM liner for aggressive media

Indicator options

•M40 - Aluminium, two-layer powder coating (epoxy / polyester)

•M40R - Stainless steel without coating

Offshore wet coating for aluminium or stainless steel on request

DEVICE DESCRIPTION

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1.3 Description code

The description code consists of the following elements *:

* positions which are not needed are omitted (no blank positions)

Figure 1-2: Description code

1 Device type

Device typeDevice type

Device type

H250 - standard version

H250H - horizontal flow direction

H250U - flow direction from top to bottom

2 Materials / versions

Materials / versionsMaterials / versions

Materials / versions

RR - stainless steel

C - PTFE or PTFE/ceramics

HC - Hastelloy

®

Ti - Titanium

Mo - Monel

In - Inconel

F - aseptic version (food)

3 Heating jacket version

Heating jacket versionHeating jacket version

Heating jacket version

B - with heating jacket

4 Type series of indicators

Type series of indicatorsType series of indicators

Type series of indicators

M40 - indicator M40

M40R - indicator in stainless steel housing

5 High-temperature version

High-temperature versionHigh-temperature version

High-temperature version

HT - version with HT extension

6 Electrical signal output

Electrical signal outputElectrical signal output

Electrical signal output

ESK - electrical signal output 4...20 mA (ESK4A)

- optionally available with counter, I/O module and display (ESK4-T)

- Foundation Fieldbus (ESK4-FF)

- Profibus PA (ESK4-PA)

7 Limit switches

Limit switchesLimit switches

Limit switches

K1 - one limit switch

K2 - two limit switches

8 Explosion protection

Explosion protectionExplosion protection

Explosion protection

Ex - explosion-protected equipment

9 SIL version

SIL versionSIL version

SIL version

SE - SIL compliant electronic signal output

SK - SIL compliant limit switch

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DEVICE DESCRIPTION

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1.4 Software revision

The "Electronic Revision" (ER) is consulted to document the revision status of electronic

equipment according to NE 53. It is easy to see from the ER whether troubleshooting or larger

changes in the electronic equipment have taken place and how that has affected the

compatibility.

Release date Electronic revision

of the system

Foundation Fieldbus

software revision

Device Revision /

DD Revision

Documentation

02.05.2011 ≥ ER 2.0.1 1.01 01 / 0101 AD H250 M40 FF R01

05.12.2011 ≥ ER 2.0.1 1.02 01 / 0101 AD H250 M40 FF R01

12.11.2015 ≥ ER 2.0.1 1.03 01 / 0101 AD H250 M40 FF R02

16.08.2018 ≥ ER 2.0.1 2.01 02 / 0101 AD H250 M40 FF R03

Table 1-1: Changes and effect on compatibility

TECHNICAL DATA

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2.1 Technical data

Description

Type Variable area flowmeter

Physical layer Foundation Fieldbus protocol, compliant to IEC 61158-2 and FISCO model;

galvanically isolated

Physical layer profile 111 - Standard-power signaling, bus-powered, Entity Model I.S.

113 - Standard-power signaling, bus-powered, non I.S.

511 - Low-power signaling, bus-powered, FISCO I.S.

Communication standard H1

H1 device class Link Master (LAS capable)

ITK version 6.3

Manufacturer ID 00012C

Device type 0700

Device revision 02

DD revision 01

CFF revision 01

Data blocks

Function blocks 1 x Enhanced Resource Block (RB)

1 x Customer Transducer Block (TB)

2 x Analog Input Block (AI)

1 x Integrator Block (IT)

1 x Proportional Integral Derivate Block (PID)

Execution time Analog Input Block: 16 ms

Integrator Block: 16 ms

PID Block: 20 ms

Electrical connections

Device power supply Bus powered 9...32 VDC - not intrinsically safe

Bus powered 9...24 VDC - intrinsically safe

Basic current 16 mA typical, 17 mA rated

Maximum error current 23 mA

Start current after 10 ms Lower than basic current

Polarity sensitivity No

Minimum cycle time 250 ms

Table 2-1: Technical data for Foundation Fieldbus

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ELECTRICAL CONNECTIONS

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3.1 Installation in hazardous area and bus cable

We recommend that a Foundation Fieldbus network in the hazardous area should be projected in

accordance with PTB's FISCO model. The FISCO model is based on the following conditions:

•All electrical components which should be connected to the bus must be approved according

to the FISCO model (even the termination).

•The maximum cable length should not exceed 1000 m / 3280.8 ft.

•The approved input values of the field devices (U

0

, I

0

, P

0

) comply to the output values of the

power supply (e.g. segment coupler) according to: U

0

≤U

i

; I

0

≤I

i

; P

0

≤P

i

.

•The values of the cable must be within the following ranges:

R' = 15…150 Ω/km; L' = 0.4…1 mH/km; C' = 45…200 nF/km

equivalent to

R' = 24…240 Ω/mile; L' = 0.65…1.6 mH/mile; C' = 72…320 nF/mile

Other limitations for the cable than the FISCO limitations are not existent.

Nevertheless, a twisted pair and shielded cable is strongly recommended.

Example:

A good quality cable could have the following data:

44 Ω/km = 70.4 Ω/mile;

<90 nF/km = <144 nF/mile;

attenuation at 39 kHz: <3 dB/km = <4.9 dB/mile;

impedance 100 Ω at 31.25 kHz

3.2 Grounding of measuring section

•The flow sensor must be properly connected to ground.

•The grounding cable should not transmit any interference voltages.

•Do not use the grounding cable to connect more than one device to ground.

•In hazardous areas, grounding is used at the same time for equipotential bonding.

•The flow sensors are connected to ground by means of a functional grounding conductor FE.

DANGER!

Special grounding instructions are contained in the "Ex supplement", which are only supplied

together with hazardous-duty equipment.

INFORMATION!

Special grounding instructions for the various measuring sensors are contained in the separate

installation instructions for the flow sensors. These instructions also contain detailed

descriptions on how to use grounding rings and how to install the flow sensors in metal or

plastic pipes or in pipes which are coated on the inside.

ELECTRICAL CONNECTIONS

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3.3 Foundation Fieldbus electrical connection

ESK4-FF

•2-wire bus powered

•Protected against reverse polarity

•Foundation Fieldbus

•Bus supply voltage 9...32 VDC

•Nominal current 16 mA

Figure 3-1: Foundation Fieldbus electrical connection

1 FF HSE bus

2 Linking device/barrier

3 Bus powered H250/M40/ESK4-FF

4 FF H1 bus, 2-wire with shield

DANGER!

The signal converter must be properly grounded to avoid personnel shock hazard. All directions,

operating data and connection diagrams do not apply to devices used in hazardous areas; in such

cases, read the special Ex instructions without fail!

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ELECTRICAL CONNECTIONS

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3.4 Cable types

The cable types are specified according to IEC 61158-2. Shielded cables offer the advantage of

malfunction-free operation with adequate protection against electromagnetic influences, and

make it possible to employ the full performance of the Foundation Fieldbus system.

In non-hazardous areas the maximum number of field devices is limited to 32. For detailed

information refer to the following table.

In non-hazardous areas the ignition protection class of the devices and the limited electric power

available limit the number of field devices to 4.

All bus segments must be fitted with a terminator at both ends.

3.5 Shielding and grounding

•For optimum electromagnetic compatibility of systems it is extremely important that the

system components, and particularly the bus cables connecting the components, are

shielded and that such shields - if possible - form an unbroken cover.

•In Ex systems an adequate equipotential bonding in the hazardous and non-hazardous

location along the entire Fieldbus installation is strongly recommended.

•Minimum requirement for EMC is a one-sided grounding of the shield on the "master" side.

Multiple grounding of the shield is of advantage.

Core cross-section 0.8 mm

2

or

AWG 18

0.32 mm

2

or

AWG 22

0.13 mm

2

or

AWG 26

1.25 mm

2

or

AWG 16

Cable type A

AA

A B

BB

B C

CC

C D

DD

D

twisted pair,

individually

shielded

individual or

multiple twisted

pairs with overall

shield

multiple twisted

pairs, without

shielding

multiple non-

twisted cables,

without shielding

Max. length

incl. branch line 1900 m / 6200 ft 1200 m / 3900 ft 400 m / 1300 ft 200 m / 650 ft

Table 3-1: Cable types

Number of devices Cable lengths for number of devices per branch line

1 device 2 devices 3 devices 4 devices

25...32 1m/ 3.3ft 1m/ 3.3ft 1m/ 3.3ft 1m/ 3.3ft

19...24 30 m / 100 ft 1m/ 3.3ft 1m/ 3.3ft 1m/ 3.3ft

15...18 60 m / 200 ft 30 m / 100 ft 1m/ 3.3ft 1m/ 3.3ft

13...14 90 m / 300 ft 60 m / 200 ft 30 m / 100 ft 1m/ 3.3ft

1..12 120 m / 400 ft 90 m / 300 ft 60 m / 200 ft 30 m / 100 ft

Table 3-2: Cable lengths for number of devices

INFORMATION!

The use of twisted and shielded cables is strongly recommended, otherwise EMC protection of

the signal converter cannot be assured.

ELECTRICAL CONNECTIONS

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3.6 Topology of FF networks

An example of mixed topology of FF networks is shown in the following example.

Connection is best made via short branch cables and T connectors. This connection type makes it

possible to connect and disconnect the devices without interrupting the bus or the

communication.

1HSE network

2H1 bus

3Intrisically safe, explosive area

B1+B2 Bridge = coupling element for H1 bus

and HSE network

D1-D3 Device = field devices, own power

supply, for non potentially explosive

areas

D4-D6 Intrinsically safe devices, external

power supply, for potentially explosive

areas

I.S. Intrinsically safe barrier

JB Junction box for field devices

PS Power supply

Switch = connection of multiple HSE

sub networks

T Terminator

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4.1 Getting started

The minimum configuration which has to be carried out in order to switch the Analog Input Block

from OOS (Out Of Service) to AUTO mode and to get a live measurement signal is as follows:

For more detailed description of these parameters refer to

Analog Input Block (AI 1, AI 2)

on

page 31.

If there are still problems to get started, execute a diagnosis as follows:

When looking to the parameter DIAGNOSIS_BLK at the Resource Block (RB) you can identify why

a block cannot be switched to AUTO mode or what has caused a Block Error. After solving the

issue the next diagnosis will be indicated in case of more than one cause.

Parameter Recommended setting Remarks

CHANNEL 1 = Volume flow (e.g. l/h)

2 = Standard/Normal volume flow

(e.g. SCFH or Nl/h)

3 = Mass flow (e.g. kg/h)

4 = Level (e.g. m)

Refer to "EU" (Engineering Units) on the

mechanical scale to determine the type of

flow

XD_SCALE 0 – Full Scale Follow mechanical scale respectively

values from TB (Transducer Block) for

"Range" and "EU"

OUT_SCALE 0 – Full Scale Follow mechanical scale respectively

values from TB (Transducer Block) for

"Range" and "EU"

L_TYPE Direct Linear function: Input = Output, same

dimensions

Table 4-1: Analog Input Block (AI)

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4.2 Hardware settings

Procedure to change settings

Figure 4-1: Hardware settings

S1.7 - Simulation enable/disable

S1.8 - Write protection

S1.7 - Simulation enable/disable S1.8 - Write protection

Unscrew housing cover

Remove small cover from FF board

Set switch block S1 switch 7

77

7 to desired position: Set switch block S1 switch 8

88

8 to desired position:

•

DISABLE: up position (factory setting)

•

ENABLE: down position

•

OFF: up position (factory setting)

•

ON: down position

Put small cover on FF board

Screw on housing cover

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4.3 Description of the FF block system

The Foundation Fieldbus is a Local Area Network (LAN) for connecting field devices like sensors

and actuators. One of the main benefits of Foundation Fieldbus is line saving in comparison to

the traditional 4...20 mA technology.

The different device functions are implemented in a block-based scheme within a user

application. In this block scheme, a distinction is made between the Resource Block, Transducer

Block and Function Block.

Figure 4-2: Foundation Fieldbus block scheme

1 Resource Block (RB)

2 Transducer Block (TB)

3 Function Block (FB)

4 Device FF communication

5 Foundation Fieldbus

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4.4 Abbreviations

Description of the used abbreviations in alphabetical order.

Abbreviation Description

AI Analog Input Block

Auto Automatic mode

BLK Block mode

IT Integrator Block

IV Initial Value

MAN Manual mode

OD Object Directory

OOS Out Of Service mode

PID Proportional Integral Derivate Block

PV Process Value (factory settings)

RRead

RB Resource Block

R/W Read and Write

SP Set Point

TB Transducer Block

WWrite

Table 4-2: Description of used abbreviations

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4.5 Foundation Fieldbus block interface

4.5.1 Resource Block (RB)

The following tables list the Resource Block parameters in alphabetical order.

It describes characteristics of the Fieldbus device (e.g. device name, serial number, etc.) and is

not included in the functional tasks of the signal converter for FF.

The following tables contain short parameter description, factory settings (Initial Value (IV)) and

possible settings.

Parameter

ParameterParameter

Parameter

DD name

Access Description and settings Initial Value

ALERT_KEY

ALERT_KEYALERT_KEY

ALERT_KEY

Alert Key R/W The identification number of the plant unit. This information

may be used in the host for sorting alarms, etc. 0

Setting:

1...255

BLOCK_ERR

BLOCK_ERRBLOCK_ERR

BLOCK_ERR

Block Error RThis parameter reflects the error status associated with the

hardware or software components associated with a block. It

is a bit string, so that multiple errors may be shown.

Current Block

Error

MODE_BLK

MODE_BLKMODE_BLK

MODE_BLK

Block Mode The actual, target, permitted and normal modes of the block.

TARGET

Target R/W This is the mode requested by the operator. Only one mode

from those allowed by the permitted mode parameter may be

requested.

Auto

Setting:

Auto / OOS

ACTUAL

Actual RThis is the current mode of the block, which may differ from

the target based on operating conditions. Its value is

calculated as part of block execution.

Actual mode

Setting:

Auto / OOS

PERMITTED

Permitted R/W Defines the modes which are allowed for an instance of the

block. The permitted mode is configured based on application

requirement.

Auto

OOS

Setting:

Auto / OOS

NORMAL

Normal R/W This is the mode the block should be set to during normal

operating conditions. Auto

Setting:

Auto / OOS

ST_REV

ST_REVST_REV

ST_REV

Static Revision RThe revision level of the static data associated with the

function block. The revision value will be incremented each

time a static parameter value in the block is changed.

0

Setting:

0...65635

STRATEGY

STRATEGYSTRATEGY

STRATEGY

Strategy R/W The strategy field can be used to identify grouping of blocks.

This data is not checked or processed by the block. 0

Setting:

0...65635

TAG_DESC

TAG_DESCTAG_DESC

TAG_DESC

Tag Description R/W The user description of the intended application of the block. blanks

Setting:

≤32 digits

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ACK_OPTION

ACK_OPTIONACK_OPTION

ACK_OPTION

Acknowledge Option R/W Selection of whether alarms associated with the function

block will be automatically acknowledged. Uninitialized

Setting:

Disc Alm Auto Ack: Discrete alarm auto acknowledged

enabled /

Blk Alm Auto Ack: Block alarm auto acknowledged enabled /

Fail Alm Auto Ack: Fail alarm auto acknowledged enabled /

Off Spec Alm Auto Ack: Off spec alarm auto acknowledged

enabled /

Maint Alm Auto Ack: Maintenance alarm auto acknowledged

enabled /

Check Alm Auto Ack: Check alarm auto acknowledged

enabled /

ALARM_SUM

ALARM_SUMALARM_SUM

ALARM_SUM

Alarm Summary The current alert status, unacknowledged states, unreported

states and disabled states of the alarms associated with the

function block.

CURRENT

Current RThe active status of each alarm. Uninitialized

Setting:

Discrete Alarm / Block Alarm / Fail Alarm /

Off Spec Alarm / Maintenance Alarm / Check Alarm

UNACKNOWLEDGED

Unacknowledged RThe unacknowledged state of each alarm. Uninitialized

Setting:

Disc Alm Unack / Block Alm Unack / Fail Alm Unack /

Off Spec Alm Unack / Maint Alm Unack / Check Alm Unack

Uninitialized

UNREPORTED

Unreported RThe unreported state of each alarm. Uninitialized

Setting:

Disc Alm Unrep / Block Alm Unrep / Fail Alm Unrep /

Off Spec Alm Unrep / Maint Alm Unrep / Check Alm Unrep

DISABLED

Disabled R/W The disabled state of each alarm. Uninitialized

Setting:

Disc Alm Disabled / Block Alm Disabled / Fail Alm Disabled /

Off Spec Alm Disabled / Maint Alm Disabled / Check Alm

Disabled

BLOCK_ALM

BLOCK_ALMBLOCK_ALM

BLOCK_ALM

Block Alarm The block alarm is used for all configuration, hardware,

connection failure or system problems in the block. The cause

of the alert is entered in the subcode field. The first alert to

become active will set the "Active" status in the "Status"

attribute. As soon as the "Unreported" status is cleared by the

alert reporting task, another block alert may be reported

without clearing the "Active" status, if the subcode has

changed.

UNACKNOWLEDGED

Unacknowledged R/W A discrete enumeration which is set to "Unacknowledged"

when an alarm occurs, and set to "Acknowledged" by a write

from a human interface device or other entity which can

acknowledge that the alarm/event has been noticed.

Uninitialized

Setting:

Uninitialized / Acknowledged / Unacknowledged

ALARM_STATE

Alarm State RA discrete enumeration which gives an indication of whether

the alert is active and whether it has been reported. Uninitialized

Setting:

Uninitialized / Clear - Reported / Clear - Not Reported /

Active - Reported / Active - Not Reported

Parameter

ParameterParameter

Parameter

DD name

Access Description and settings Initial Value

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TIME_STAMP

Time Stamp RThe time when evaluation of the block was started and a

change in alarm/event state was detected that is unreported.

The time stamp value will be maintained constant until alert

confirmation has been received – even if another change of

state occurs.

Uninitialized

Setting:

MM / DD / YY (Month / Day / Year)

HH:MM:SS (Hour:Minute:Second)

SUB_CODE

Subcode RAn enumeration specifying the cause of the alert to be

reported. Other

Setting:

Other / Block Configuration / Link Configuration /

Simulation Active / Local Override / Device Fault State /

Device Maintenance / Input Failure / Output Failure /

Memory Failure / Lost Static Data / Lost NV Data /

Readback Check / Maintenance Needed / Power Up /

Out Of Service

VALUE

Value RThe value of the associated parameter at the time the alert

was detected. 0

Setting:

0...255

CLR_FSTATE

CLR_FSTATECLR_FSTATE

CLR_FSTATE

Clear Fault State R/W Writing a "Clear" to this parameter will clear the device fault

state if the field condition, if any, has cleared. Off

Setting:

Uninitialized / Off / Clear

CONFIRM_TIME

CONFIRM_TIMECONFIRM_TIME

CONFIRM_TIME

Confirm Time R/W The minimum time between retries of alert reports. 640000

Setting:

0...4294967295 in [1/32 ms]

CYCLE_SEL

CYCLE_SELCYCLE_SEL

CYCLE_SEL

Cycle Selection R/W Used to select the block execution method for this resource. Uninitialized

Setting:

Scheduled / Block execution

CYCLE_TYPE

CYCLE_TYPECYCLE_TYPE

CYCLE_TYPE

Cycle Type RIdentifies the block execution methods available for this

resource. Scheduled

Block execution

Setting:

Scheduled / Block execution

DD_RESOURCE

DD_RESOURCEDD_RESOURCE

DD_RESOURCE

DD Resource RString identifying the tag of the resource which contains the

Device Description for this resource. blanks

Setting:

≤ 32 digits

DD_REV

DD_REVDD_REV

DD_REV

DD Revision RRevision of the DD associated with the resource - used by an

interface device to locate the DD file for the resource. Dependent on

current DD version

Setting:

Dependent on current DD version

DEV_REV

DEV_REVDEV_REV

DEV_REV

Device Revision RManufacturer revision number associated with the resource -

used by an interface device to locate the DD file for the

resource.

Dependent on

current device

version

Setting:

Dependent on current device version

DEV_TYPE

DEV_TYPEDEV_TYPE

DEV_TYPE

Device Type RManufacturer's model number associated with the resource -

used by interface devices to locate the DD file for the

resource.

ESK

Setting:

ESK

Parameter

ParameterParameter

Parameter

DD name

Access Description and settings Initial Value

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FAULT_STATE

FAULT_STATEFAULT_STATE

FAULT_STATE

Fault State RCondition set by loss of communication to an output block,

failure promoted to an output block or a physical contact.

When fault state condition is set, then output function blocks

will perform their "FSTATE" actions.

Clear

Setting:

Uninitialized / Clear / Active

FD_CHECK_ACTIVE

FD_CHECK_ACTIVEFD_CHECK_ACTIVE

FD_CHECK_ACTIVE

Check Active RThis parameter reflects the error conditions that are being

detected as active as selected for this category. It is a bit

string, so that multiple conditions may be shown.

Uninitialized

Setting:

(00) Check / (07) Blocked float /

(08) Gas bubbles in the liquid / (09) Pulsating flow /

(10) External magnetic fields /

(12) Electr. Temp. <-45°C or >+120°C/

(13) No output linearization /

(14) No temperature compensation /

(15) No pre linearization / (16) PV between 1.1 and 1.5 FS /

(17) Electr. Temp. <-40°C or >+85°C/

(19) Primary Variable > 150% /

(20) Temp. Sensor Failure / (21) Sensor B Failure /

(22) Sensor A Failure / (23) Invalid drift /

(24) Crystal failure / (25) Memory corrupted /

(26) FRAM Error / (27) ROM Error /

(29) Internal communication

FD_CHECK_ALM

FD_CHECK_ALMFD_CHECK_ALM

FD_CHECK_ALM

Check Alarm This parameter is used primarily to broadcast a change in the

associated active conditions, which are not masked, for this

alarm category to a Host System.

UNACKNOWLEDGED

Unacknowledged R/W A discrete enumeration which is set to "Unacknowledged"

when an alarm occurs, and set to "Acknowledged" by a write

from a human interface device or other entity which can

acknowledge that the alarm/event has been noticed.

Uninitialized

Setting:

Uninitialized / Acknowledged / Unacknowledged

ALARM_STATE

Alarm State RA discrete enumeration which gives an indication of whether

the alert is active and whether it has been reported. Uninitialized

Uninitialized / Clear - Reported / Clear - Not Reported /

Active - Reported / Active - Not Reported

TIME_STAMP

Time Stamp RThe time when evaluation of the block was started and a

change in alarm/event state was detected that is unreported.

The time stamp value will be maintained constant until alert

confirmation has been received - even if another change of

state occurs.

Uninitialized

Setting:

MM / DD / YY (Month / Day / Year)

HH:MM:SS (Hour:Minute:Second)

SUB_CODE

Subcode RBitstring value of the associated *_Active parameter or’ed

with the compliment of the associated *_MASK parameter. Uninitialized

VALUE

Value RThe value of the associated parameter at the time the alert

was detected.

Parameter

ParameterParameter

Parameter

DD name

Access Description and settings Initial Value

4

OPERATION

20

H250 M40

www.krohne.com 04/2020 - 4001208203 - AD H250-M40 FF R03 en

FD_CHECK_MAP

FD_CHECK_MAPFD_CHECK_MAP

FD_CHECK_MAP

Check Map R/W This parameter enables or disables conditions to be detected

as active for this alarm category. (00) Check

Setting:

(00) Check / (07) Blocked float /

(08) Gas bubbles in the liquid / (09) Pulsating flow /

(10) External magnetic fields /

(12) Electr. Temp. <-45°C or >+120°C/

(13) No output linearization /

(14) No temperature compensation / (15) No pre linearization /

(16) PV between 1.1 and 1.5 FS /

(17) Electr. Temp. <-40°C or >+85°C/

(19) Primary Variable > 150% / (20) Temp. Sensor Failure /

(21) Sensor B Failure / (22) Sensor A Failure /

(23) Invalid drift / (24) Crystal failure /

(25) Memory corrupted / (26) FRAM Error / (27) ROM Error /

(29) Internal communication

FD_CHECK_MASK

FD_CHECK_MASKFD_CHECK_MASK

FD_CHECK_MASK

Check Mask R/W This parameter allows the user to suppress any single or

multiple conditions that are active, in this category, from

being broadcast to the host through the alarm parameter.

Uninitialized

Setting:

(00) Check / (07) Blocked float /

(08) Gas bubbles in the liquid / (09) Pulsating flow /

(10) External magnetic fields /

(12) Electr. Temp. <-45°C or >+120°C/

(13) No output linearization /

(14) No temperature compensation /

(15) No pre linearization / (16) PV between 1.1 and 1.5 FS /

(17) Electr. Temp. <-40°C or >+85°C /

(19) Primary Variable > 150% / (20) Temp. Sensor Failure /

(21) Sensor B Failure / (22) Sensor A Failure /

(23) Invalid drift / (24) Crystal failure /

(25) Memory corrupted / (26) FRAM Error / (27) ROM Error /

(29) Internal communication

FD_CHECK_PRI

FD_CHECK_PRIFD_CHECK_PRI

FD_CHECK_PRI

Check Priority R/W This parameter allows the user to specify the priority of this

alarm category. 0

Setting:

0...15

FD_FAIL_ACTIVE

FD_FAIL_ACTIVEFD_FAIL_ACTIVE

FD_FAIL_ACTIVE

Fail Active RThis parameter reflects the error conditions that are being

detected as active as selected for this category. It is a bit

string, so that multiple conditions may be shown.

Uninitialized

Setting:

(00) Check / (07) Blocked float /

(08) Gas bubbles in the liquid / (09) Pulsating flow /

(10) External magnetic fields /

(12) Electr. Temp. <-45°C or >+120°C/

(13) No output linearization /

(14) No temperature compensation / (15) No pre linearization /

(16) PV between 1.1 and 1.5 FS /

(17) Electr. Temp. <-40°C or >+85°C/

(19) Primary Variable > 150% /

(20) Temp. Sensor Failure / (21) Sensor B Failure /

(22) Sensor A Failure / (23) Invalid drift / (24) Crystal failure /

(25) Memory corrupted / (26) FRAM Error / (27) ROM Error /

(29) Internal communication

FD_FAIL_ALM

FD_FAIL_ALMFD_FAIL_ALM

FD_FAIL_ALM

Fail Diagnostic Alarm This parameter is used primarily to broadcast a change in the

associated active conditions, which are not masked, for this

alarm category to a Host System.

UNACKNOWLEDGED

Unacknowledged R/W A discrete enumeration which is set to "Unacknowledged"

when an alarm occurs, and set to "Acknowledged" by a write

from a human interface device or other entity which can

acknowledge that the alarm/event has been noticed.

Uninitialized

Setting:

Uninitialized / Acknowledged / Unacknowledged

Parameter

ParameterParameter

Parameter

DD name

Access Description and settings Initial Value

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KROHNE H250 M40 FOUNDATION FIELDBUS Owner's manual

KROHNE H250 M40 FOUNDATION FIELDBUS Owner's manual

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