Emerson 848T manual 00809-0100-4697, Rev EA October Resource Block Parameters

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Rosemount 848T

Reference Manual

00809-0100-4697, Rev EA October 2011

Table 3-2. Resource Block Parameters

Number

Parameter

Description

28

FAULT_STATE

Condition set by loss of communication to an output block, fault promoted to an output block

 

 

or physical contact. When FAIL_SAFE condition is set, then output function blocks will

 

 

perform their FAIL_SAFE actions.

29

SET_FSTATE

Allows the FAIL_SAFE condition to be manually initiated by selecting Set.

30

CLR_FSTATE

Writing a Clear to this parameter will clear the device FAIL_SAFE if the field condition has

 

 

cleared.

31

MAX_NOTIFY

Maximum number of unconfirmed notify messages possible.

32

LIM_NOTIFY

Maximum number of unconfirmed alert notify messages allowed.

33

CONFIRM_TIME

The time the resource will wait for confirmation of receipt of a report before trying again. Retry

 

 

will not happen when CONFIRM_TIME=0.

34

WRITE_LOCK

If set, all writes to static and non-volatile parameters are prohibited, except to clear

 

 

WRITE_LOCK. Block inputs will continue to be updated.

35

UPDATE_EVT

This alert is generated by any change to the static data.

36

BLOCK_ALM

The BLOCK_ALM 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.

37

ALARM_SUM

The current alert status, unacknowledged states, unreported states, and disabled states of

 

 

the alarms associated with the function block.

38

ACK_OPTION

Selection of whether alarms associated with the block will be automatically acknowledged.

39

WRITE_PRI

Priority of the alarm generated by clearing the write lock.

40

WRITE_ALM

This alert is generated if the write lock parameter is cleared.

41

ITK_VER

Major revision number of the interoperability test case used in certifying this device as

 

 

interoperable. The format and range are controlled by the Fieldbus FOUNDATION.

42

DISTRIBUTOR

Reserved for use as distributor ID. No FOUNDATION enumerations defined at this time.

43

DEV_STRING

This is used to load new licensing into the device. The value can be written but will always

 

 

read back with a value of 0.

44

XD_OPTIONS

Indicates which transducer block licensing options are enabled.

45

FB_OPTIONS

Indicates which function block licensing options are enabled.

46

DIAG_OPTIONS

Indicates which diagnostics licensing options are enabled.

47

MISC_OPTIONS

Indicates which miscellaneous licensing options are enabled.

48

RB_SFTWR_REV_MAJOR

Major revision of software that the resource block was created with.

49

RB_SFTWR_REV_MINOR

Minor revision of software that the resource block was created with.

50

RB_SFTWR_REV_BUILD

Build of software that the resource block was created with.

51

RB_SFTWR_REV_ALL

The string will contains the following fields:

 

 

Major rev: 1-3 characters, decimal number 0-255

 

 

Minor rev: 1-3 characters, decimal number 0-255

 

 

Build rev: 1-5 characters, decimal number 0-255

 

 

Time of build: 8 characters, xx:xx:xx, military time

 

 

Day of week of build: 3 characters, Sun, Mon, …

 

 

Month of build: 3 characters, Jan, Feb.

 

 

Day of month of build: 1-2 characters, decimal number 1-31

 

 

Year of build: 4 characters, decimal

 

 

Builder: 7 characters, login name of builder

52

HARDWARE_REV

Hardware revision of that hardware that has the resource block in it.

53

OUTPUT_BOARD_SN

Output board serial number.

54

FINAL_ASSY_NUM

The same final assembly number placed on the label.

55

DETAILED_STATUS

Indicates the state of the transmitter. NOTE: Will be writable when PWA_SIMULATE is On

 

 

during simulation mode.

56

SUMMARY_STATUS

An enumerated value of repair analysis.

57

MESSAGE_DATE

Date associated with the MESSAGE_TEXT parameter

58

MESSAGE_TEXT

Used to indicate changes made by the user to the device’s installation, configuration, or

 

 

calibration.

59

SELF_TEST

Used to self test the device. Tests are device specific.

3-8

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Contents Reference Manual 00809-0100-4697, Rev EA OctoberPage Rosemount 848T High Density Temperature Transmitter with Customer Central National Response Center InternationalPage Table of Contents Appendix a Operation MaintenanceSection TOC-2Process leaks could result in death or serious injury Safety MessagesSection Introduction Electrical shock could cause death or serious injuryOverview Fieldbus host or configuration toolMaintenance of the Rosemount 848T Temperature Transmitter TransmitterService Support Rosemount 848T Section Installation Safety Messages MountingMounting to a DIN Rail Without an Enclosure Mounting to a Panel with a Junction BoxMounting to a 2-in. Pipe Stand Aluminum/Plastic Junction Box Stainless Steel Junction BoxConnections WiringSpur Signal Wiring Devices 1 through Leads and terminalsRTD or Ohm Inputs Thermocouple or Millivolt InputsAnalog Inputs Ohm resistor in the loop when switched to the left ConnectorsPower Supply Analog InputPower Supply Surges/TransientsConnections Shielded Wire GroundingMA loop 848T Power Supply Sensor Wires Shield ground pointsTransmitter Enclosure optional Fieldbus busSwitch is not functional SwitchesSimulate Enable SecurityTransmitter Tag TaggingCommissioning Tag Sensor TagInstallation Using Cable GlandsUsing Conduit Entries Section Configuration Configuration Transmitter Configuration Custom Configuration MethodsStandard Rosemount 848T Function Common Configurations for High Density ApplicationsTypical Profiling Application BlockMeasuring Temperature Points Individually Monitoring Application with a Single SelectionMultiple Analog Input or Analog Input Block Configuration Block Configuration Resource BlockNumber Parameter Description 00809-0100-4697, Rev EA October Resource Block Parameters Startwithdefaults SaveconfignowSaveconfigblocks FailedenableAutomatic Auto Block ErrorsModes Block is processing its normal background memory checksPlantWeb Alerts Out of Service OOSAlarm Detection Status Handling00809-0100-4697, Rev EA October Failure Alarms FailedmaskMaintenance Alarms/Priority Alarm Advisory AlarmsAlarm Alarm Type Active Event Recommended Action Recommended Actions for PlantWeb AlertsTransducer Blocks RESOURCE.HARDWAREREV,RESOURCE.RBSFTWRREVALL Channel Definitions for the 848T Transducer Block ErrorsTransducer Block Channel Definitions Channel DescriptionTransducer Block Modes 00809-0100-4697, Rev EA October Block/Transducer ErrorTransducer Block Alarm Detection Block outputs reflect the analog input measurementSENSOR3CONFIG SENSOR1CONFIGSENSOR2CONFIG SENSOR4CONFIGChanging the Sensor Configuration in the Transducer Block 11. Xderror Sub-Parameter Structure 12. Sensorconfig Sub-Parameter StructureTransducer Block Sub-Parameter Tables 15. Calstatus Structure 13. Sensorstatus Sub-Parameter Structure14. Sensorcal Sub-Parameter Structure 16. Transducer Status Sub-Parameter StructureStructure Dual Sensor Status TableStructure 20. Validation Config Sub-Parameter Structure Sensor Calibration in the Sensor Transducer BlockStructure Parameter Description Rosemount 848T Operation and Maintenance Foundation Fieldbus InformationFoundation Commissioning Addressing Sensor Check Hardware MaintenanceRestart with Defaults Restart Processor cyclingSymptom Possible Cause Corrective Action TroubleshootingTransducer Block Troubleshooting Symptom Possible Causes Corrective ActionFunctional Specifications Appendix a Reference DataBackup Link Active Scheduler LAS Update TimeAlarms Transient ProtectionPhysical Specifications Performance Specifications Function BlocksAccuracy Sensor Option Sensor Reference 3-Wire RTDsAccuracy for Differential Configurations Input RangesSensor Option Alarm Levels Accuracy Analog Sensors 4-20mAAmbient Temperature Effect Rosemount 848T Dimensional DrawingsAmbient Temperature Notes Examples Top ViewStainless Steel Junction Box-Cable Gland option code JS2 Side View Front ViewFront View Side View Stainless Steel Junction Box-Conduit Entry option code JS3 Side ViewStainless Steel Junction Box Style JS Mounting OptionsAluminum/Plastic Junction Box Styles JA and JP Front View Side ViewOrdering Information OptionsConduit Electrical Connector Standard Software Configuration StandardSpecial Temperature Test Expanded Enclosure Options StandardRosemount 848T Hazardous Locations Certificates Table B-2. Entity Parameters for Non Incendive Field WiringAppendix B Product Certificates North American ApprovalsPower/Bus Canadian Standards Association CSA Certifications Atex Certifications Power/Bus SensorEuropean Approvals Special Conditions for Safe UseCi = Li = Rosemount 848T Special Conditions of Safe Use IECEx CertificationsRosemount 848T Parameters Terminals of power/loop China NEPSICertificationsJapanese Certifications Intrinsically Safe and NON-INCENDIVE Installations Installation Drawings Figure B-1. FM Intrinsic Safety/ Fisco 00809-0100-4697, Rev EA Rosemount 848T Figure B-2. CSA Intrinsic Safety/ Fisco Rosemount 848T Rosemount 848T Appendix C Foundation fieldbus Technology Overview Function BlocksSnap InputOutput Linkages StatusResource Blocks Device Descriptions Block OperationInstrument- Specific Function Blocks Alerts Transducer BlocksNetwork Communication Link Active Scheduler LASFieldbus Link LAS Parameters MID x ST DataPublisher/Subscriber Backup LASAddressing Scheduled Transfers Report DistributionUnscheduled Transfers ScheduleDevice Device Y Device Z Function Block Scheduling Number Parameter Units Description Appendix D Function BlocksAnalog Input AI Function Block OUTOutscale AlarmhysXdscale IooptsFunctionalitySimulation OUT mode in manOUT mode in auto 63% of ChangeDirect Signal ConversionFiltering IndirectIndirect Square Root ConditionsTable D-3. Alarm Priority Levels Manual ManValue of the block output OUT may be set manually BAD if Limited Uncertain if in Manual modeAdvanced Features Uncertain if LimitedXdblock AI Block TroubleshootingApplication Information HIHILIMIT, LolimitMultiple Analog Input MAI Function Block Table D-4. Multiple Analog Input Function Block ParametersCAPSTDDEV1 Figure D-4. Multiple Analog Input Function Block Schematic SimulateOption in Manual or Out of Service mode only Devices such as flowmetersTable D-5. Blockerr Conditions Block output OUT may be set manually MAI Block Troubleshooting IN1 IN2 IN3 IN4 IN5 IN6 IN7 Input Selector Function BlockTable D-6. Input Selector Function Block Parameters OUT OutrangeSelected SelecttypeMingood OpselectAlarm OUT INn DISABLEnMode Logic Selection FunctionalityTable D-8. Alarm Priority Levels OUT reflects the selected valueBlock Execution Use Uncertain as GoodIsel Block Troubleshooting Index NumericsAlarm Detection Configuration Errors Modes AutomaticMaintalarms Troubleshooting Errors Modes AutomaticPage Rosemount Inc Pacific Private Limited

848T specifications

The Emerson 848T is a state-of-the-art temperature transmitter designed for accurate and reliable temperature measurement in various industrial applications. This device has gained recognition for its advanced features and robust performance, making it a popular choice among engineers and technicians in the field.

One of the key highlights of the Emerson 848T is its unique dual-channel capability, which allows it to seamlessly monitor two temperature sources simultaneously. This functionality is particularly beneficial in processes where multiple temperature points need to be assessed, optimizing efficiency and reducing the need for additional equipment. It supports various sensor types, including thermocouples, RTDs, and resistance temperature detectors, making it versatile for different applications.

The 848T is equipped with sophisticated digital processing technology, which enhances its accuracy and stability. It features a 24-bit analog-to-digital converter, ensuring precise measurement and minimizing drift over time. Moreover, the device boasts a wide operating temperature range, accommodating ambient conditions from -40°C to 85°C. This durability makes it suitable for harsh environments commonly encountered in industries such as oil and gas, pharmaceuticals, and power generation.

Another significant characteristic of the Emerson 848T is its configurable output options. Users can choose from a range of output signals, including 4-20 mA, which provides a standard interface for integration into existing control systems. Additionally, it offers a HART communication protocol, allowing for easy configuration, calibration, and diagnostics through a digital interface. This feature enhances the transmitter's usability, enabling operators to perform adjustments without direct access to the device.

The device is designed with user-friendliness in mind. Its intuitive setup procedure and robust graphical user interface simplify the commissioning process, ensuring that even those new to the technology can easily navigate the system. An integrated LCD display provides real-time readings and status information, facilitating monitoring at a glance.

In summary, the Emerson 848T temperature transmitter combines reliable performance, user-friendly design, and advanced digital technologies. Its dual-channel capability, wide sensor compatibility, and adjustable output options make it an essential tool for achieving precise temperature measurements in various industrial settings. With these compelling features, the Emerson 848T stands out as a leading choice for professionals seeking accuracy and efficiency in their temperature monitoring applications.