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Incus HART Field Device Specification
Manuals & Guides
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Rosemount Incus HART Field Device Specification Manuals & Guides

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00809-0200-3003, Rev AA
Incus HART® Field Device Specification
Manual Supplement
December 2018
2
Manual Supplement Contents
00809-0200-3003 December 2018

Contents

1.1 Scope............................................................................................................................................... 5
1.2 Purpose............................................................................................................................................ 5
1.3 Who should use this document?.......................................................................................................5
1.4 Abbreviations and definitions........................................................................................................... 5
1.5 References....................................................................................................................................... 5
4.1 Process interface............................................................................................................................ 11
4.2 Host interface.................................................................................................................................11
4.3 Local interfaces, jumpers, and switches.......................................................................................... 12
7.1 Device status..................................................................................................................................17
7.2 Extended device status...................................................................................................................17
7.3 Additional device status (command 48)......................................................................................... 18
9.1 Supported commands....................................................................................................................23
9.2 Burst mode.....................................................................................................................................23
9.3 Catch device variable......................................................................................................................23
10.1 Command 134: Read alarm level.................................................................................................. 25
10.2 Command 136: Set alarm level.....................................................................................................26
10.3 Command 140: Read alarm delay.................................................................................................26
10.4 Command 142: Set alarm delay....................................................................................................27
10.5 Command 143: Read alarm latch..................................................................................................28
10.6 Command 144: Set alarm latch.................................................................................................... 29
10.7 Command 145: Read operating mode..........................................................................................29
10.8 Command 147: Read heater enable..............................................................................................30
10.9 Command 161: Set test current....................................................................................................31
11.1 Sampling rates............................................................................................................................. 33
Manual Supplement 3
Contents Manual Supplement
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11.2 Power-up......................................................................................................................................33
11.3 Reset............................................................................................................................................ 33
11.4 Self-test........................................................................................................................................33
11.5 Command response times (TTO)..................................................................................................33
11.6 Busy delayed response................................................................................................................. 34
11.7 Long messages.............................................................................................................................34
11.8 Non-volatile memory................................................................................................................... 34
11.9 Modes.......................................................................................................................................... 34
11.10 Write protection.........................................................................................................................34
11.11 Damping.................................................................................................................................... 34
Appendix C Operation with WirelessHART® Adapters.....................................................................39
C.1 Two-wire (loop powered) WirelessHART® adapters.........................................................................39
C.2 Three-wire Ex d/Explosion Proof certified WirelessHART® adapters................................................. 39
Appendix D Customer Level and Service Level HART® Device-Specific Commands........................... 41
4 Incus
Manual Supplement Introduction
00809-0200-3003 December 2018

1 Introduction

1.1 Scope

This document describes the function, performance, and operating procedures for the HART® communication features provided on the Emerson™ Incus.
This document specifies all the device specific features and documents HART protocol implementation details (e.g., engineering unit codes supported). The functionality of this field device is described sufficiently to allow its proper application in a process monitoring application and its complete support in HART capable host applications.

1.2 Purpose

This specification is intended to be used with other documentation and provides a description of this Field Device from a HART® Communication perspective.

1.3 Who should use this document?

This document is intended to be a technical reference for HART® capable host application developers, system integrators, and knowledgeable end users. It also provides functional specifications (e.g., commands, enumerations, and performance requirements) used during Field Device installation, maintenance, and testing. This document assumes that the reader is familiar with HART protocol requirements and terminology and their impact on safety systems.

1.4 Abbreviations and definitions

Table 1-1: Abbreviations Used within this Document
Abbreviation Meaning
EEPROM Electrically-erasable read-only memory
FSK Frequency-shift keying (a method of
modulation)
HCF HART® Communication Foundation

1.5 References

Table 1-2: Reference Document List
Document Revision Document number
HART® - FSK Physical Layer Spec 8.1 HCF_SPEC-54
HART - Data Link Layer Specification 8.2 HCF_SPEC-81
Manual Supplement 5
Introduction Manual Supplement
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Table 1-2: Reference Document List (continued)
Document Revision Document number
HART - Command Summary Specification
HART- Universal Command Specification
HART- Common Tables 21.0 HCF_SPEC-183
HART - Common Response Code Specification
Incus Reference Manual 7.0 MAN-INCUS-rev.7
9.0 HCF_SPEC-99
7.1 HCF_SPEC-127
6.0 HCF_SPEC-307
6 Incus
Manual Supplement Device Identification
00809-0200-3003 December 2018

2 Device Identification

Table 2-1: Device Identification
Manufacturer's name Emerson
Manufacturer ID code 6072
Model name(s) Incus
Device type code E1E6
Device revision 1 and 2 (see text)
HART® Protocol revision number 7.0
Number of device variables 1
Physical layers supported FSK
Physical device category Current output device
™
Manual Supplement 7
Device Identification Manual Supplement
December 2018 00809-0200-3003
8 Incus
Manual Supplement Product Overview
00809-0200-3003 December 2018

3 Product Overview

Incus is an ultrasonic gas leak detector which detects the airborne ultrasound generated from pressurised gas leaks.
Airborne ultrasound is generated when gas moves from a high pressure area to a low pressure area with a ratio ≥ 1.8: 1 upstream to downstream pressure. The intensity of airborne ultrasound generated by a leak is due to a number of factors, including but not limited to, gas pressure, leak size and gas temperature. The use of Incus as a leak detector is only recommended for pipelines running at pressures > 2 bar.
Incus uses four individual piezo-ceramic sensing heads, mounted using Emerson’s patent-pending floating-crystal design. The sensor design makes the sensing heads virtually indestructible and totally immune to temperature, moisture, and other contaminants found in hazardous industry. Incus has a wide dynamic range which facilitates use in a variety of applications from laboratories to turbine houses. The multi­stage amplifier ensures a linear output across the entire detector range without drop-off at each end of range.
™
Incus is not designed to detect specific gas types or to measure percentage LEL or ppm concentration level, but instead responds instantaneously to a wide range of leak sizes while being unaffected by even the most extreme weather conditions. Incus is rated to IP66 / IP67 to withstand harsh environments and continues to work during temporary immersion.
Incus uses a continuous electronic background monitoring test feature to ensure complete functionality. This testing is invisible to the user and does not interrupt the normal detection operation of the sensor. Incus also has an optional heating facility which enables the internal electronics to be kept within normal parameters with external temperatures as low as -67 °F (-55 °C). (Even lower temperature operation is possible, although cold startup cannot be guaranteed). The heater uses a proportional-control scheme, meaning the unit can be kept within an optimal operating temperature range while minimising the additional current draw from the incoming +24 V supply.
Incus has complete customer flexibility. The current-loop output can be factory configured as source or sink, and the scale-factor can be configured to mimic other vendor’s detector outputs. Also provided is a multi-drop RS485 diagnostic port using an Emerson­proprietary protocol. Incus also features infrared communication, using the same proprietary protocol, which allows parameter interrogation and setting ability from up to 8M range using a proprietary USB-IR interface adapter. This allows non-contact setup of parameters after installation.
Incus with software version 2.6 onwards has HART® communication enabled by default.
Manual Supplement 9
Product Overview Manual Supplement
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10 Incus
Manual Supplement Product Interfaces
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4 Product Interfaces

4.1 Process interface

4.1.1 Sensor input channels

The Incus uses four floating piezo ceramic heads to detect a pressurised gas leak. Information about the sensor channels can be found in the Incus Reference Manual.

4.2 Host interface

4.2.1 Analog output channel (current loop)

The Incus is wired as a three wire sensor using the terminals marked 0 V, +24 V, and mA inside the terminal compartment. Detailed connection details can be found in the Incus
Reference Manual. The current-loop output is factory configured as either source or sink
mode (default is source). If the Incus is configured for source mode the current loop is connected between mA (+) and 0 V (-) terminals. If using a sink mode Incus, the current loop is connected between +24 V (+) and mA (-).
This current-loop output is configured to be proportional to the primary variable (dB SPL); the specific 4-20 mA signal level and scale-factor details can be found in the Incus
Reference Manual. The scale factor varies according to the operating mode selected. The
manual also describes the device malfunction indications that are available, signalled by specific DC current levels below 4 mA viz. 2 mA, 1 mA, and 0 mA. See Operation with
WirelessHART® Adapters for implications of using external WirelessHART® adapters with
this signalling scheme.
HART communication is supported on this loop. In order for HART to operate successfully, the loop should be terminated with a resistor in the range of 100 – 500 ohms, generally in the control room.
Note
The Incus current-loop output operates in Active mode, meaning the power to the loop is provided by the sensor itself.
Manual Supplement 11
Product Interfaces Manual Supplement
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4.2.2 Relay outputs

The Incus has configurable relay outputs used to indicate a device fault and alarm condition. These relay configurations are not accessible through the HART® interface. Refer to the Incus Reference Manual for more information.

4.3 Local interfaces, jumpers, and switches

4.3.1 Local controls and displays

The Incus has a seven segment display to relay information back to the user. The displayed information cannot be controlled by the HART® interface. More information is contained in the Incus Reference Manual.
12 Incus
Manual Supplement Device Variables
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5 Device Variables

There are no device variables available to the user.
Manual Supplement 13
Device Variables Manual Supplement
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14 Incus
Manual Supplement Dynamic Variables
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6 Dynamic Variables

Table 6-1: HART® Variables Supported by the Incus
HART variable Description Units
Primary variable (PV) The dB reading seen on the main
sensor display and reported via the 4-20 mA current-loop, being the sound pressure level in decibels (dB).
(2)
(2)
The temperature, in degrees Celsius, or the internal sensor electronics.
The temperature, in degrees Celsius, of the internal heater electronics. Reports NaN if heater not fitted
(optional).
Secondary variable (SV)
Tertiary variable (TV)
(1) The current Incus Device Description (available from Emerson™) interprets the "manufacturer-specific unit code '240'" to
represent the symbol "dB".
(2) SV and TV are only supported for the Device Revision 2 onwards.
dB (240 unit code
°C
°C
(1)
)
Manual Supplement 15
Dynamic Variables Manual Supplement
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16 Incus
Manual Supplement Status Information
00809-0200-3003 December 2018

7 Status Information

7.1 Device status

The device status byte, which is contained in the second data byte of the Incus reply to any HART® command, is defined below.
Table 7-1: Device Status Bits to be Included into Each Incus HART Response
Bit mask Definition Incus conditions to be set
0x80 (bit 7) Device malfunction Set on detection of a device
malfunction.
0x40 (bit 6) Configuration changed Set whenever the unit configuration is
changed.
0x20 (bit 5) Cold start Set, for one transaction only, for each
master when device is powered up.
0x10 (bit 4) More status bits available Set whenever a bit detailed in the
additional device status is set
(1)
(alarm
, malfunctions).
0x08 (bit 3) Loop current fixed Set when loop current is parked
(3.5 mA)
0x04 (bit 2) Loop current saturated Not used by Incus.
0x02 (bit 1) Primary variable out of limits Not used by Incus.
0x01 (bit 0) Non-primary variable out of limits Not used by Incus.
(1) Device Revision 2 onwards
(1)
.

7.2 Extended device status

The extended device status byte, contained in byte 6 of command 48 response data byte, contains the following bitwise status information.
Table 7-2: Extended Device Status Bits in Byte 6 of the Response Data Bytes for Command 48
Bit mask Definition Incus conditions to be set
0x80 (bit 7) Undefined N/A
0x40 (bit 6) Undefined N/A
0x20 (bit 5) Undefined N/A
0x10 (bit 4) Undefined N/A
0x08 (bit 3) Undefined N/A
0x04 (bit 2) Critical power failure Not used by the Incus.
0x02 (bit 1) Device variable alert Set if the device is in alarm condition.
0x01 (bit 0) Maintenance required Not used by the Incus.
Manual Supplement 17
Status Information Manual Supplement
December 2018 00809-0200-3003

7.3 Additional device status (command 48)

This is the response returned by command 48. (Command 48 will normally be executed by a host if bit 4 of the field device status byte is set in any command response, but can only be executed independently).
Table 7-3: Additional Device Status (x = Undefined)
Byte Bit mask Incus condition to be set
0 0000 0001 Alarm active
0 0000 0010 Cleaning active - obsolete
0 0000 0100 Production test 10 minute counteractive
0 0000 1000 Low 24 V supply
0 0001 0000 High 24 V supply
0 0010 0000 Low 12 V supply
0 0100 0000 High 12 V supply
0 1000 0000 Blown warranty fuse
1 0000 0001 Low gain ping error head 0
1 0000 0010 Low gain ping error head 1
1 0000 0100 Low gain ping error head 2
1 0000 1000 Low gain ping error head 3
1 0001 0000 High gain ping error head 0
1 0010 0000 Ping order error
1 0100 0000 High/low gain comparison on Head 0
1 1000 0000 Over temperature/case temp sensor fault
2 0000 0001 Obsolete
2 0000 0010 Obsolete
2 0000 0100 Obsolete
2 0000 1000 Obsolete
2 0001 0000 Obsolete
2 0010 0000 Obsolete
2 0100 0000 Undefined
2 1000 0000 Undefined
3 xxxx xxxx Undefined
4 xxxx xxxx Undefined
5 xxxx xxxx Undefined
6 xxxx xx1x Alarm 1: Monitored sound level is in excess of the present
alarm threshold.
7 xxxx xxxx Undefined
18 Incus
Manual Supplement Status Information
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Table 7-3: Additional Device Status (x = Undefined) (continued)
Byte Bit mask Incus condition to be set
8 0000 0001 Undefined
8 0000 0010 Undefined
8 0000 0100 Undefined
8 0000 1000 Undefined
8 0001 0000 Voltage error
8 0010 0000 Temperature error
8 0100 0000 Cleaning error - obsolete
8 1000 0000 Undefined
9-24 0000 0000 Unused: Message truncated after bye 13 for HART® 5, 6,
and 7 cross-compatibility.
Manual Supplement 19
Status Information Manual Supplement
December 2018 00809-0200-3003
20 Incus
Manual Supplement Universal Commands
00809-0200-3003 December 2018

8 Universal Commands

All universal commands are supported, although command 6 (Write polling address) is not fully supported for Device Revision 1.
Table 8-1: HART® Universal Commands Supported by Incus
Number Command name Supported by
Incus
0 Read unique identifier ✓ Device ID number
1 Read primary variable ✓ dB sound pressure level
2 Read current loop and percent of
range
3 Read dynamic variable and loop
current
6 Write polling address ✓
7 Read loop configuration ✓ Incus does not support multi-drop
8 Read dynamic variable classifications ✓ N/A
9 Read device variables with status ✓ Maximum of 4 variable slots available.
11 Read unique identifier associated with
a tag
12 Read message ✓ Returns data written by command 17.
13 Read tag, descriptor, date ✓ Returns data written by command 18.
14 Read primary variable transducer
information
✓ 4-20 mA output level
(1)
✓
(2)
✓ Device ID number (as command 0)
✓ N/A
Comment
4-20 mA output level and dB SPL level (returns only the PV giving a total of 9 bytes response data).
Device Revision 2 onwards
operation for Device Revision < 2.
15 Read device information ✓ N/A
16 Read final assembly number ✓ Returns data written by command 19.
17 Write message ✓ N/A
18 Write tag, descriptor, date ✓ N/A
19 Write final assembly number ✓ N/A
20 Read long tag ✓ Returns data written by command 22.
21 Read unique identifier associated with
long tag
22 Write long tag ✓ N/A
(3)
38
Manual Supplement 21
Read configuration changed tag ✓ This command will reset the bit
✓ N/A
associated with the device issuing the command.
Universal Commands Manual Supplement
December 2018 00809-0200-3003
Table 8-1: HART® Universal Commands Supported by Incus (continued)
Number Command name Supported by
Comment
Incus
(3)
48
Read additional device status ✓ This returns the additional device
status bytes as detailed in Table 7-3.
(1) SV (case temperature) and TV (optional heater temperature) supported for Device Revision 2 and greater. (2) This mode is restricted for Device Revision 1. (3) Commands 38 and 48 were only introduced into the Universal Commands at HART 7 (HCF_SPEC-127 rev 7.0).
22 Incus
Manual Supplement Common Practice Grounds
00809-0200-3003 December 2018

9 Common Practice Grounds

9.1 Supported commands

The Incus does not support any common practice commands.

9.2 Burst mode

The Incus does not support burst mode.

9.3 Catch device variable

The Incus does not support the catch device variable feature.
Manual Supplement 23
Common Practice Grounds Manual Supplement
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24 Incus
Manual Supplement Device Specific Commands
00809-0200-3003 December 2018

10 Device Specific Commands

Table 10-1: HART® Device Specific Commands supported by Incus
Number Command name Supported by
Incus
134 Read alarm level ✓ Returns the alarm level set point.
136 Set alarm level
140 Read alarm delay ✓ Returns the alarm delay value.
142 Set alarm delay
143 Read alarm latch ✓ Reads the alarm latch value.
144 Set alarm latch
145 Read op-mode
147 Read heater enable ✓ Reads the heater enable setting.
161 Test current ✓ Sets a constant loop current for 10
(1) Device Revision 2 onwards.
(1)
(1)
(1)
(1)
✓ Sets level (db) at which alarm relay
✓ Sets time above alarm threshold
✓ Enables latching of generated alarm
✓ Reads the operating mode (mA out
Comment
trips.
before alarm generated.
(one shot). Also used to reset latched alarm.
scale factor and fault signaling options).
minutes.

10.1 Command 134: Read alarm level

Command 134 will return the dB SPL value at which an alarm condition will occur.
10.1.1

10.1.2 Response data bytes

Manual Supplement 25

Request data bytes

Table 10-2: Request Data Byes for HART® Command 134
Byte Format Description
None N/A N/A
Table 10-3: Response Data Bytes for HART® Command 134
Byte Format Description
0 Unsigned: 8 Alarm level in dB
Device Specific Commands Manual Supplement
December 2018 00809-0200-3003

10.1.3 Command specific response codes

Table 10-4: Command Specific Response Codes for HART® Command 134
Byte Class Description
0 Success (0) No command specific errors

10.2 Command 136: Set alarm level

Command 136 will set the alarm trip point in dB SPL.

10.2.1 Request data bytes

Table 10-5: Request Data Bytes for HART® Command 136
Byte Format Description
0 Unsigned: 8 Level of alarm setpoint in dB.
Valid range: 40 - 200 dB

10.2.2 Response data bytes

Table 10-6: Response Data Bytes for HART® Command 136
Byte Format Description
0 Unsigned: 8 Alarm level in dB

10.2.3 Command specific response codes

Table 10-7: Command Specific Response Codes for HART® Command 136
Byte Class Description
0 Success (0) No command specific errors
0 Parameter too large (3) Requested alarm level > 200 dB
0 Parameter too small (2) Requested alarm level < 40 dB

10.3 Command 140: Read alarm delay

Command 140 will return the amount of time an alarm can be delayed before an alarm condition is signalled.
10.3.1

Request data bytes

Table 10-8: Request Data Bytes for HART® Command 140
Byte Format Description
0 N/A N/A
26 Incus
Manual Supplement Device Specific Commands
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10.3.2 Response data bytes

Table 10-9: Response Data Bytes for HART® Command 140
Byte Format Description
0 ENUM 0 to 99 = 0 to 990 sec (in 10 sec
steps) 100 to 127: 0 to 27 sec (in 1 sec steps)

10.3.3 Command specific response codes

Table 10-10: Command Specific Response Codes for HART® Command 140
Byte Class Description
0 Success (0) No command specific errors

10.4 Command 142: Set alarm delay

Command 142 will set the time the signal has to be continuously in excess of the alarm threshold before an alarm is generated.
10.4.1

10.4.2 Response data bytes

Request data bytes

Table 10-11: Request Data Bytes for HART® Command 142
Byte Format Description
0 ENUM Enumerate list of alarm delays
Table 10-12: Response Data Bytes for HART® Command 142
Byte Format Description
0 ENUM 0 TO 99 = 0 to 990 sec (in 10
0 to 99 = 0 to 990 sec (in 10 sec steps)
100 to 127 = 0 to 27 sec (in 1 sec steps)
sec steps) 100 to 127 = 0 to 27 sec (in 1 sec steps)
Manual Supplement 27
Device Specific Commands Manual Supplement
December 2018 00809-0200-3003

10.4.3 Command specific response codes

Table 10-13: Command Specific Response Codes for HART® Command 142
Byte Class Description
0 Success (0) No command specific errors
0 Parameter too large (3) Requested alarm delay ENUM >
127

10.5 Command 143: Read alarm latch

Command 143 will return the alarm latch parameter.
10.5.1

Request data bytes

Table 10-14: Request Data Bytes for HART® Command 143
Byte Format Description
None N/A N/A

10.5.2 Response data bytes

Table 10-15: Response Data Bytes for HART® Command 143
Byte Format Description
0 ENUM 0 = Off

10.5.3 Command specific response codes

Table 10-16: Command Specific Response Codes for HART® Command 143
Byte Class Description
0 Success (0) No command specific errors
1 = On
28 Incus
Manual Supplement Device Specific Commands
00809-0200-3003 December 2018

10.6 Command 144: Set alarm latch

Command 144 sets Incus in a 1-shot mode where an alarm event triggers and sets the alarm relays; relays remain set until after power is cycled. This command can also be used to reset the alarm latch after it has been triggered by an alarm event.

10.6.1 Request data bytes

Table 10-17: Request Data Bytes for HART® Command 144
Byte Format Description
None ENUM 0x00 = Off
0x01 = On

10.6.2 Response data bytes

Table 10-18: Response Data Bytes for HART® Command 144
Byte Format Description
0 ENUM 0 = Off/Reset
1 = On/Arm

10.6.3 Command specific response codes

Table 10-19: Command Specific Response codes for HART® Command 144
Byte Class Description
0 Success (0) No command specific errors
Parameter too large ENUM out of range

10.7 Command 145: Read operating mode

Command 145 will return the operating mode of the Incus sensor.
10.7.1

Request data bytes

Table 10-20: Request Data Bytes for HART® Command 145
Byte Format Description
None N/A N/A
Manual Supplement 29
Device Specific Commands Manual Supplement
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10.7.2 Response data bytes

Table 10-21: Response Data Bytes for HART® Command 145
Byte Format Description Scale factor
0 ENUM 0, 2 4 mA normal, 20 mA in-alarm
1 4 mA normal, 12 mA in-alarm
50 4 - 20 mA :: 56 dB to 104 dB
64, 65 4 - 20 mA :: 40 dB to 200 dB
70, 71 4 - 20 mA :: 40 dB to 120 dB
96, 97 4 - 20 mA :: 40 dB to 104 dB

10.7.3 Command specific response codes

Table 10-22: Command Specific Response Codes for HART® Command 145
Byte Class Description
0 Success (0) No command specific errors

10.8 Command 147: Read heater enable

Command 147 will return the heater enable parameter.
10.8.1

10.8.2 Response data bytes

Request data bytes

Table 10-23: Request Data Bytes for HART® Command 147
Byte Format Description
0 N/A N/A
Table 10-24: Response Data Bytes for HART® Command 147
Byte Format Description
0 ENUM 0 = Off
1 = Auto
2 = On

10.8.3 Command specific response codes

Table 10-25: Command Specific Response Codes for HART® Command 147
Byte Class Description
0 Success (0) No command specific errors
30 Incus
Manual Supplement Device Specific Commands
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10.9 Command 161: Set test current

Command 161 will enable and program a constant test current to be transmitted via the 4-20 mA loop for 10 minutes maximum. Test current can also be terminated via this command.

10.9.1 Request data bytes

Table 10-26: Request Data Bytes for HART® Command 161
Byte Format Description
0 ENUM 0x00 = Off
0x01 = On
1 Unsigned: 8 0 - 200 :: 0 - 20 mA in 100 µA
increments. > 200 invalid.

10.9.2 Response data bytes

Table 10-27: Response Data Bytes for HART® Command 161
Byte Format Description
0 ENUM 0 = Off
1 Unsigned: 8 Programmed current in units of

10.9.3 Command specific response codes

Table 10-28: Command Specific Response Codes for HART® Command 161
Byte Class Description
0 Success (0) No command specific errors
Invalid selection (2) Invalid ENUM for On/Off
Parameter too large (3) Selected test current out of
1 = On
100 µA.
control
range
Manual Supplement 31
Device Specific Commands Manual Supplement
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32 Incus
Manual Supplement Performance
00809-0200-3003 December 2018

11 Performance

11.1 Sampling rates

Please refer to the Incus Reference Manual for details of the measurement process.

11.2 Power-up

Upon power-up, a brief diagnostic check will run to ensure detector functionality. This check will last for no more than 10 seconds. Once the check is completed, Incus will go into normal operation using the factory/customer defaults specified at time of order or signal any faults that may be present. No response to any HART® command is guaranteed during the power-up phase.
More information on the power-up sequence is available in the Incus Reference Manual.

11.3 Reset

Command 42 (Device reset) is not supported.

11.4 Self-test

The Incus does not support command 41 (Self-test). A self-test is continuously performed during the normal measurement cycle. Any errors or faults can be determined using command 48 (Read additional device status). More information about the self-test can be found in the Incus Reference Manual.

11.5 Command response times (TTO)

Table 11-1: Command Response Times
Minimum 0 ms
Typical 12 ms
Maximum 100 ms
Manual Supplement 33
Performance Manual Supplement
December 2018 00809-0200-3003

11.6 Busy delayed response

The delayed response mechanism is not used.

11.7 Long messages

The longest message supported is the response to a command 9 (Read device variables with status); this message can return a maximum of 37 bytes, dependent on the request from the Master.

11.8 Non-volatile memory

EEPROM is used to hold sensor configuration data. The data is stored immediately following a write command (e.g., command 17: Write messages).

11.9 Modes

Operating modes can only be changed by factory personnel.

11.10 Write protection

Write protection is not implemented on the Incus.

11.11 Damping

Damping is not implemented on the Incus.
34 Incus
Manual Supplement Capability Checklist
00809-0200-3003 December 2018

A Capability Checklist

Table A-1: HART® Capability Checklist for Incus
Manufacturer, model, and revision Emerson™ Incus
Device type Ultrasonic detector
HART Revision 7.3
Device description (DD) available? Yes, not HCF registered at present.
Device type manager (DTM) available? Can be accessed using generic HART DTM.
Number and type of sensors 4 x piezo transducers
Number and type of actuators 0
Number and type of host side signals 1: 4-20 mA analog
Number of device variables 1 (3 for Device Revision 2 onwards)
Number of dynamic variables 0
Multiple dynamic variables? No
Number of common-practice commands 0
Number of device specific commands 9
Bits of additional device status 8
Alternative operating modes 0 field settable; 5 factory options
Burst mode? No
Write-protection? No
Manual Supplement 35
Capability Checklist Manual Supplement
December 2018 00809-0200-3003
36 Incus
Manual Supplement Default Configuration
00809-0200-3003 December 2018

B Default Configuration

Table B-1: HART® Default Configuration for Incus
Parameter Default value
Polling address 0
Unique identifier The unit serial number
Tag Incus
Descriptor Incus
PV units Decibels (dB) sent with unit code 240,
manufacturer specific
Number of response preambles 5
Manual Supplement 37
Default Configuration Manual Supplement
December 2018 00809-0200-3003
38 Incus
Manual Supplement Operation with WirelessHART® Adapters
00809-0200-3003 December 2018
®
C Operation with WirelessHART
Adapters
C.1 Two-wire (loop powered) WirelessHART
®
adapters
Owing to the use of sub 4 mA signalling levels for indication of fault conditions, the standard operating modes of the Incus are not suitable for use with loop-powered WirelessHART adapters, e.g., the Emerson™ THUM.
These wireless adapters generally have a minimum operating current level of 3.5 mA; below this level, they are not guaranteed to have sufficient power to remain connected to the wireless network. Within the Incus, special operating modes are provided in which the low loop current signalling modes are inhibited. This may facilitate operation with this type of wireless adapter. Alternatively, for Device Revision 2 and greater, loop current may be parked at 3.5 mA, (via HART command 6) for wireless only operation. Contact Emerson for further information.
C.2 Three-wire Ex d/Explosion Proof certified
WirelessHART® adapters
The Incus has been verified for operation with suitably certified WirelessHART adapters; these adapters can be powered from a local DC source, e.g., the Mactek Bullet wiring diagram is shown in Figure C-1 below. The loop termination resistor shown can be mounted inside the Incus terminal enclosure, using a two-way splice block. Alternatively, the resistor could be part of the Input card in the control room. The Bullet also has the facility to switch its own termination resistor into the circuit, under control from a local Emerson™ 475 handheld field terminal, AMS configuration software, or a device running the Pactware FDT software and Bullet DTM.
(1)
. A typical
(1) May require a Bullet firmware update.
Manual Supplement 39
DC POWER SOURCE
3 WIRE HART ENABLED FIELD DEVICE
(+)
(-)
TERMINAL
+24VDC
4-20mA OUTPUT
24v RETURN (0V)
MACTek Corporation BULLET WirelessHART Adapter
DIRECT POWER
LOOP POWER
RETURN
HART
INTERNAL CHASSIS [EGND]
EXTERNAL CHASSIS [EGND]
BLACK
RED
WHITE
YELLOW
GRN/YEL
R1 340
®
Operation with WirelessHART® Adapters Manual Supplement
December 2018 00809-0200-3003
Figure C-1: Three-Wire HART Enabled Field Device Wiring Diagram
Connecting the Incus (Field Device) to a three-wire Ex d WirelessHART adapter. Option shown uses a local termination resistor.
40 Incus
Manual Supplement Customer Level and Service Level HART® Device-Specific Commands
00809-0200-3003 December 2018
D Customer Level and Service Level
HART® Device-Specific Commands
Table D-1: Published Device-Specific HART Commands (Customer Level)
Command Read/Write Software
version
134 Read > 2.1 Read alarm level N/A
136 Write > 2.1 Set alarm level Device Revision 02 onwards.
140 Read > 2.1 Read alarm delay N/A
142 Write > 2.1 Set alarm delay Device Revision 02 onwards.
143 Read > 2.1 Read alarm latch N/A
144 Write > 2.1 Set alarm latch Device Revision 02 onwards.
145 Read > 2.6 Read op-mode Device Revision 02 onwards.
147 Read > 2.1 Read heater enable N/A
161 Write > 3.3 Send test current Programmable fixed loop
Command name Notes
current, 10 minutes timeout. 0-20 mA in 100 µA increments. Device Revision 02 onwards.
Table D-2: Service Level HART Commands (Not Supported in DD/DTM)
Command Read/Write Software
version
150 Write > 2.1 Request unlock key Used to request timed access
Command name Notes
token for service level write commands.
146 Write > 2.6 Set op-mode Device Revision 02 onwards.
148 Write > 2.1 Set heater enable N/A
151 Read > 3.0 Read ping 0 level Device Revision 02 onwards.
152 Write > 3.0 Trim ping up/down Device Revision 02 onwards.
160 Write > 2.1 Write unlock key Used to unlock timed service
access. Send modified access token to unlock.
Manual Supplement 41
00809-0200-3003
Rev. AA
2018
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