Instruction manual - Honeywell€¦ · Instruction manual 97x SmartRadar series HART output communication Page 9 2.2.2 Change PV LRV and/or PV URV 1 Switch on the HART communicator

Instruction manual97x SmartRadarHART output communication

Instruction manual 97x SmartRadar series HART output communication Page 1

Instruction manual 97x SmartRadar HART

® output communication

January 2010

Part no. 4416.646

Rev. 3

Enraf B.V. P.O. Box 812 2600 AV Delft Netherlands Tel. : +31 15 2701100 Fax : +31 15 2701111 E-mail : [email protected] Website : http://www.honeywellenraf.com

Page 2 Instruction manual 97x SmartRadar series HART output communication

Copyright 2001 - 2010 Enraf B.V. All rights reserved.

Reproduction in any form without the prior consent of Enraf B.V. is not allowed. This manual is for information

only. The contents, descriptions and specifications are subject to change without notice. Enraf B.V. accepts no

responsibility for any errors that may appear in this manual.

The warranty terms and conditions applicable in the country of purchase in respect to Enraf B.V. products are

available from your supplier. Please retain them with your proof of purchase.

Preface


Preface

This manual is intended for technicians involved with the commissioning and service of the Enraf Series

97x SmartRadar with optional analog level output including HART communication.

A description preceding the technical procedures gives the technical information necessary to understand its

functioning. It is recommended to read this description prior to performing any of the procedures.

Safety and prevention of damage

Refer to the chapter Safety in the instruction manual of the 970, 971 and 973 series SmartRadar for detailed

safety instructions.

"Warnings", "Cautions", and "Notes" have been used throughout this manual to bring special matters to the

immediate attention of the reader.

• A Warning concerns danger to the safety of the technician or user;

• A Caution draws attention to an action which may damage the equipment;

• A Note points out a statement deserving more emphasis than the general text, but

does not deserve a "Warning" or a "Caution".

The sequence of steps in a procedure may also be important from the point of view of personal safety and

prevention of damage; it is therefore advised not to change the sequence of procedure steps or modify any

procedure in any other way.

Legal aspects

The commissioning and troubleshooting to the instrument may only be conducted by qualified engineers, trained

by Enraf and with knowledge of safety regulations for working in hazardous areas.

The information in this manual is the copyright property of Enraf B.V., Netherlands.

Enraf B.V. disclaims any responsibility for personal injury or damage to equipment caused by:

• Deviation from any of the prescribed procedures;

• Execution of activities that are not prescribed;

• Neglect of the general safety precautions for handling tools and use of electricity.

EC declaration of conformity

This instrument is in conformity with the protection requirements of EC Council Directive 93/68/EEC.

The CE conformity marking fulfills the provisions of:

• 89/336/EEC regarding EMC:

EN 50081-2 Generic Emission Standard

EN 50082-2 Generic Immunity Standard

• 73/23/EEC regarding Low Voltage Directive

• 94/09/EEC regarding ATEX

• 97/23/EEC regarding PED Directive

Additional information

Please do not hesitate to contact Honeywell Enraf or its representative if you require any additional information.

Table of contents


Table of contents

Preface.............................................................................................................................................................3

1 Introduction ......................................................................................................................................................5

2 Commissioning.................................................................................................................................................6

2.1 Setting / checking the analog output loop ...............................................................................................6

2.2 HART communicator...............................................................................................................................7

2.2.1 Change HART communication address......................................................................................8

2.2.2 Change PV LRV and/or PV URV ................................................................................................9

3 Operation .......................................................................................................................................................10

3.1 HART frame formats .............................................................................................................................10

3.2 Supported HART commands ................................................................................................................11

3.3 Using HART physical layer with Enraf GPU protocol ............................................................................12

4 Troubleshooting .............................................................................................................................................13

Appendix A Implemented universal HART commands.................................................................................14

Appendix B Related documents ...................................................................................................................15

Index ..............................................................................................................................................................16

Introduction


1 Introduction

The ICU_HPO output board in the 970, 971 and 973 SmartRadar has the following two communication options:

• analog (4-20 mA) level output

• HART communication

The HART communication signal (Bell 202 standard, frequency shifting key 1200/2200 Hz) is superimposed on

the analog 4-20 mA level output signal.

The analog output loop can be either active or passive. The analog loop is galvanically separated from the

SmartRadar electronics. When set to active, the supply voltage in the loop is: 20 Vdc (±5%).

When set to passive, an external supply voltage (minimum 12 Vdc, maximum 64 Vdc) is required.

For setting the analog output, refer to instruction manual Temperature, Water bottom and Analog output options.

This instruction manual only describes the functions with the HART communication signal.

HART communication

With the HART communicator (model 275 or equivalent) connected to the SmartRadar 97x, a limited number of

parameters can be read and set.

Enraf recommends to use the digital HART communication to request the PV (Primary Variable) and SV

(Secondary Variable) from the host.

This gives the most accurate value for the level data as the D/A conversion is skipped.

• PV level (or ullage) value

• SV product temperature value.

Other information via the HART communication can be obtained with the Enraf GPU protocol via the ‘standard’

records or by means of items via the ‘Z-record’. Refer to the SmartRadar protocol manual.

Commissioning


2 Commissioning

2.1 Setting / checking the analog output loop

The analog loop is galvanically separated from the SmartRadar electronics and can be set either passive or

active. When set to active, the supply voltage in the loop is: 20 Vdc (±5%).

When set to passive, an external supply voltage (minimum 12 Vdc, maximum 64 Vdc) is required.

Refer to the installation guide 97x series SmartRadar for the wiring connection of the external equipment.

Setting the analog output loop to active or passive is done by selecting the correct connector on the ICU_HPO

board. Standard, the SmartRadar are delivered with the analog output loop set as ‘passive’. Hence, an external

supply voltage is required.

When the analog loop should be set to Αactive≅, the connector on the ICU_HPO board needs to be changed

from position. That procedure is described below.

1 Switch off mains power from the SmartRadar LT;

2 Open electronic compartment cover;

3 Locate the ICU_HPO board (refer to figure 2.1);

4 Loosen the cable connector from connector CN 1 (passive), and plug it into CN 2 (active);

5 Close electronic compartment cover;

6 Apply mains power.

Figure 2.1 Changing over from passive to active analog output loop supply

Commissioning


2.2 HART communicator

The HART communicator must be connected to terminals 1 and 2 of the SmartRadar.

HART communication requires a series resistor of at least 250 Ω, maximum loop resistance for HART

communication is 1100 Ω. Refer to figure 2.2.

Figure 2.2 Connecting the HART communicator

When the HART loop is powered by an external power source, the minimum supply voltage (Vmin

) is 14 Vdc; the

maximum supply voltage (Vmax1

) is 36 Vdc (with 250 Ω resistor). When a larger supply voltage is used, the series

resistor must be increased according to the graph in figure 2.2.

The maximum external power supply voltage (Vmax2

) is 57.5 Vdc. The total loop resistance includes cable

resistance, series resistance and input impedance of the host. Each 97x SmartRadar with ICU_HPO output

board is delivered with the HART communication address set to >0=. With this setting, the analog output is

enabled and can be in any value between 4 to 20 mA.

The 97x SmartRadar with ICU_HPO output board can be set for multi-drop mode by changing the HART

communication address. Any address between 1 and 15 will do. Then the current is fixed to 4 mA (only possible

when loop is externally powered). In this way a bus structure is formed. Changing the HART communication

address can be done with the HART communicator.

The HART communicator can also be used to set the 4 mA value (PV LRV) and the 20 mA value (PV URV).

As long as the PV LRV and PV URV are not set, items AM (4 mA level value) and AN (20 mA level value) are

used by the ICU_HPO board.

A soon as the PV LRV (4 mA level value) and PV URV (20 mA level value) are set, those settings will be used

by the ICU_HPO board. The PV LRV and PV URV settings are locally stored on the ICU_HPO SEEPROM.

Commissioning


2.2.1 Change HART communication address

1 Switch on the HART communicator and wait for the self test message and the message that no device is

found. Then press OK <F4>.

2 Connect the HART communicator to the SmartRadar as indicated in figure 2.2.

3 The HART communicator shows the following message on the display:

Select “On line” by pressing the “β” key and the “⇒” key.

4 After the scanning is completed, the following message will be shown:

Note: If more HART devices are connected, their addresses are shown

too.

Select the SmartRadar LT with address 0 by Α_≅ key.

5 The following menu will be shown:

Select “Device setup” by pressing the “⇒_” key.

6 Select: 4 Detailed setup

3 HART condition

2 HART output

1 Poll address

Press the “⇒” key. The default polling address 0 is shown. Give the desired address (1, 2, 3 ... to 15) by

means of the numerical key path on the HART communicator. Then press ENTER <F4>.

7 Press SEND <F2> to store the new address in the ICU_HPO memory.

8 Press OK <F4> twice.

9 Press HOME <F3>.

The SmartRadar is now set in multi-drop mode.

When ready with the HART communicator, switch it off and disconnect it from the SmartRadar.

Please note that the analog output of the SmartRadar is set to 4 mA and hence, data communication only can

be done via requesting the PV (Primary Variable) and/or SV (Secondary Variable). Refer to section 3.

HART Communicator

1→ Offline

2 Online

3 Frequency Device

HART Communicator

1 Online

Generic:

Online (Generic)

1 → Device setup

2 PV

3 PV AO

4 PV LRV

5 PV URV

Commissioning


2.2.2 Change PV LRV and/or PV URV

1 Switch on the HART communicator and wait for the self test message and the message that no device is

found. Then press OK <F4>.

2 Connect the HART communicator to the SmartRadar as indicated in figure 2.2.

3 The HART communicator shows the following message on the display:

Select “On line” by pressing the “⇓”key and the “⇒Α” key.

4 After the scanning is completed, the following message will be shown:

Note: If more HART devices are connected, their addresses are shown too.

Select the SmartRadar with the desired address by pressing

the (“⇓” key and) “⇒”key.

5 The following menu will be shown:

Select 4 (PV LRV) by pressing the “⇓” key (3 times) and the “⇒” key.

6 Select 1 (PV LRV) from the menu by pressing the “⇒”key.

Enter the value for PV LRV (the level which should correspond with

the 4 mA value) on the numerical key path and press ENTER <F4>.

Select 2 (PV URV) from the menu by pressing the “⇓” and “⇒”key.

Enter the value for PV URV (the level which should correspond with

the 20 mA value) on the numerical key path and press ENTER <F4>.

7 Press SEND <F2> and press OK <F4> twice.

8 Press HOME <F3>.

The analog output of the SmartRadar is now calibrated.

Switch off the HART communicator and disconnect it from the SmartRadar.

HART Communicator

1→ Offline

2 Online

3 Frequency Device

4 Utility

HART Communicator

Online

1→ 0:

Generic:

Online (Generic)

1→ Device setup

2 PV

3 PV AO

4 PV LRV

5 PV URV

Generic:

1→ PV LRV

2 PV URV

Generic:

PV LRV

000.0000 m

_

Operation


3 Operation

3.1 HART frame formats

The SmartRadar supports the “HART extended frame format”. The “HART short frame format” is only supported

in command 0 (read unique identifier). The response of command 0 in HART short frame format will inform the

host that further communication must be done in the HART extended frame format.

The lay-out of the short frame format is:

Request: STX

Address

Command

Byte count

Data

Checksum

Reply: ACK

Address

Command

Byte count

Status code

Data

Checksum

where:

STX = 02H

Address = bit 7 : 1 primary master

0 secondary master

bit 6 : 1 burst mode

0 normal mode

bits 5, 4 : 0, 0 logical address

bits 3..0 : device address = polling address

Command = HART command number (see section 3.2)

Byte count = number of data bytes

Checksum = XOR of all bytes in the message preceding the checksum

ACK = 06H

Status code = 2 bytes of HART status code (see next page)

The lay-out of the extended frame format is:

Request: STX=

Unique ID

Command

Byte count

Data

Checksum

Reply: ACK=

Unique ID

Command

Byte count

Status code

Data

Checksum

where:

STX= = 82H

Unique ID = bit 39 : 1 primary master

0 secondary master

bit 38 : 1 burst mode

0 normal mode

bits 37..24 : mfr=s identification code bits 5..0

mfr=s device type code bits 7..0

bits 23..0 : device id number

Command = HART command number (see section 3.2)

Byte count = number of data bytes

Checksum = XOR of all bytes in the message preceding the checksum

ACK= = 86H

Status code = 2 bytes of HART status code (see next page)

Operation


The status code in the reply message contains two bytes.

Error message on communication:

First byte: Second byte:

bit 7 = 1 bits 7..0 = 0

bit 6 = parity error

bits 5,4 = 0, 0

bit 3 = checksum error

bit 2 = 0

bit 1 = buffer overflow

bit 0 = undefined

Error message on data:

First byte: Second byte:

bit 7 = 0 bit 7 = device malfunction *)

bits 6..0 not bit-mapped; bit 6 = configuration changed

0 no error bit 5 = cold start

2 invalid selection bit 4 = 0

3 passed parameter too large bit 3 = output current fixed

4 passed parameter too small bit 2 = analog output saturated

5 too few data bytes received bit 1 = 0

64 command not implemented bit 0 = primary variable out of limits

*) The device malfunction bit is set on the following radar status conditions (item QR):

• general ICU fail

• level fail

• out of measuring range

• blocked

3.2 Supported HART commands

The following HART commands are implemented in the SmartRadar:

Command 0 Read unique identifier

Command 1 Read PV

Command 2 Read current and percent of range

Command 3 Read current and two dynamic variables (PV and SV; message is truncated after the

14th byte)

Command 6 Write polling address

Command 11 Read unique identifier associated with tag

Command 12 Read message

Command 13 Read tag descriptor date

Command 14 Read PV sensor information

Command 15 Read output information

Command 16 Read final assembly number

Command 17 Write message

Command 18 Write tag descriptor date

Command 19 Write final assembly number

Command 35 Write range values

Refer to Appendix A for detailed information on above commands.

Operation


3.3 Using HART physical layer with Enraf GPU protocol

With the universal HART commands, the PV (product level, or ullage) and the SV (product temperature) can be

requested.

More information, such as: vapour temperature, vapour pressure, HIMS density or service data for e.g.

reflection diagram, can be collected from the SmartRadar by means of the Enraf GPU protocol.

This is an ASCII protocol, described in the protocol manual SmartRadar.

Note: Standard, the GPU protocol uses 7 data bits with odd parity. HART communication uses 8 data bits, odd

parity and a preamble (8 times logical >1=) in front of the message.

The connection between the host (or PC) and the SmartRadar consists of the HART communication line. Even

when only the analog output (4-20 mA) of the SmartRadar is used, the HART communication is present for data

exchange of other quantities than product level or for service purposes.

Figure 3.1 HART communication to a host or service PC

When the HART loop is powered by an external power source, the minimum supply voltage (Vmin

) is 14 Vdc; the

maximum supply voltage (Vmax1

) is 36 Vdc (with 250 Ω resistor). When a larger supply voltage is used, the series

resistor must be increased according to the graph in figure 3.1.

The maximum external power supply voltage (Vmax2

) is 57.5 Vdc. The total loop resistance includes cable

resistance, series resistance and input impedance of the HART modem.

Troubleshooting


4 Troubleshooting

The 97x SmartRadar is a self diagnostic instrument. Detected errors can be requested by the host, or by the

847 Portable Enraf Terminal, when the IR connector is present.

The following items contains error information of the ICU_HPO board:

Communication board fatal error counter (item FO):

This counter contains the detected number of fatal ICU_HPO board errors. The maximum count is 99;

additional errors are not registered.

Communication board last encountered fatal error (item OF):

This item holds the last encountered fatal error code of the ICU_HPO board.

0000 no error encountered

0001 cmx errors

0002 program errors

0003 interrupt errors

0004 watchdog errors

Communication board actual status (item OA):

Item OA contains the actual status of the ICU_HPO board, 30 seconds after startup. The first 30 seconds

after initialization (EX, or RS command or power on) this item contains the ICU_HPO software version.

OK000 no error encountered

ER010 ICU (XPU-part) not found

ER011 ICU (XPU-part) not responding

ER012 ICU (XPU-part) answer with error

ER020 DAC error

ER021 not calibrated (items A3 and/or A4 are zero)

ER030 NOVRAM checksum error

ER031 NOVRAM access error

ER040 code checksum error

ER050 RAM error

Appendix


Appendix A Implemented universal HART commands

Command number

and function

Data in command (type)

Data in reply (type)

Default

0 Read unique

identifier

none

byte 0 expansion

byte 1 Enraf identification code

byte 2 Enraf device type code

byte 3 number of preambles

byte 4 universal command revision

byte 5 transmitter specific cmd revision

byte 6 software revision (integers)

byte 7 hardware revision (bit mapped)

byte 8 device function flags

bytes 9..11 device ID number

254

148

1

8

05

01

10

0

0

1 (after start-up: contents of item PN)

1 Read primary

variable

none

byte 0 PV units code

bytes 1..4 primary variable (floating point format)

according to item LD

2 Read current and

% of range

none

bytes 0..3 current [mA] (floating point format)

bytes 4..7 percent of range (floating point format)

item AK = D : 4.0 mA / 0 %

item AK = A,I,L,O : 3.5 mA /-3.125 %

item AK = B,J,M,P : 22.0 mA / 112.5 %

3 Read current and

4 (predefined)

dynamic values

none

bytes 0..3 current [mA] (floating point format)

byte 4 PV units code

bytes 5..8 primary variable (floating point format)

byte 9 SV units code

bytes 10..13 secondary variable (floating point format)

3.5 / 4.0 / 22.0


7F A0 00 00H

according to item TD

7F A0 00 00H

6 Write polling

address

byte 0: polling address

as in command

11 Read unique

identifier & tag

bytes 0..5: tag (ASCII)

as command 0

as command 0

12 Read message

none

bytes 0..23 message (ASCII)

> - = (32 x) packed

13 Read tag

descriptor date

none

bytes 0..5 tag (ASCII)

bytes 6..17 descriptor (ASCII)

bytes 18..20 date (dd mm yy)

> - = (8 x) packed

> - = (16 x) packed

01 01 99

14 Read PV sensor

information

none

bytes 0..2 sensor serial number

byte 3 units code for sensor limits and span

bytes 8..11 lower sensor limit (floating point format)

bytes 12..15 minimum span (floating point format)

0x000000 (not applicable)

250 (not used)

7F A0 00 00H

7F A0 00 00H

15 Read output

information

none

byte 0 alarm select code

byte 1 transfer function code

byte 2 PV / range units code

bytes 3..6 upper range value (floating point format)

bytes 7..10 lower range value (floating point format)

bytes 11..14 damping value [s] (floating point format)

byte 15 write-protect code

byte 16 private-label distributer code

250 (not used)

250 (not used)


according to item AN

according to item AM

7F A0 00 00H

250 (not used)

250 (not used)

16 Read final assy

number

none

bytes 0..2 final assembly number

0x000000 (after start-up: contents of

item PN)

17 Write message

bytes 0..23: message (ASCII)

as in command

18 Write tag

descriptor date

bytes 0..5: tag (ASCII)

bytes 6..17: descriptor (ASCII)

bytes 18..20: date (dd mm yy)

19 Write final assy

number

bytes 0..2: final assembly number

35 Write range values

byte 0: range unit code

bytes 1..4: upper range value

(floating point format)

bytes 5..8 lower range value (floating

point format)

as in command

Appendix


Appendix B Related documents

Instruction manual 970 SmartRadar ATi

Instruction manual 971 SmartRadar LTi

Instruction manual 973 SmartRadar LT

Installation guide 970 SmartRadar ATi

Installation guide 971 SmartRadar LTi

Installation guide 973 SmartRadar LT

Instruction manual ENSITE service tool

Index


Index

Analog output loop

active................................................................. 6

passive .............................................................. 6

Caution................................................................... 3

Communication board

actual status .................................................... 13

fatal error counter............................................ 13

last encountered fatal error ............................. 13

Extended frame format......................................... 10

HART communicator ....................................... 5, 7-9

ICU board............................................................... 6

ICU_HPO board ................................................. 5, 7

Items

AK ................................................................... 14

AM................................................................... 14

AN ................................................................... 14

FO ................................................................... 13

LD.................................................................... 14

OA................................................................... 13

OF ................................................................... 13

PN ................................................................... 14

QR................................................................... 11

TD ................................................................... 14

Multi-drop mode ..................................................7, 8

Note ........................................................................3

Preamble...............................................................12

Primary Variable .....................................................5

PV ...............................................................5, 11, 12

PV LRV ...................................................................9

PV URV...................................................................9

Radar status..........................................................11

Secondary Variable.................................................5

Short frame format ................................................10

SV ...............................................................5, 11, 12

Warning...................................................................3

Honeywell Enraf

Delftechpark 39

2628 XJ Delft

The Netherlands

Tel: +31 (0)15-2701 100

Email: [email protected]

www.honeywellenraf.com

4416646 - Revision 3January 2010© 2010 Honeywell International Inc.

Documents

Instruction manual - Honeywell€¦ · Instruction manual 97x SmartRadar series HART output communication Page 9 2.2.2 Change PV LRV and/or PV URV 1 Switch on the HART communicator