Pepperl+Fuchs KFD Series Manual Download

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HART Multiplexer System KFD*-HM*-16

Appendix

201

8-04

9.3

Bibliography

/1/

HART Communication Foundation: HART Communication Protocol Specification

HCF_SPEC-13, Revision 7.5

https://fieldcommgroup.org/hart-specifications

/2/

HART Communication Foundation: HART Application Guide

HCF_LIT-039 Rev. 7.1

https://fieldcommgroup.org/technologies/hart/documents-and-downloads-hart

/3/

Romilly Bowden

HART Field Communications Protocol: A Technical Overview, 2007

Fisher-Rosemount

Summary of Contents for KFD Series

Page 1: ...ISO9001 3 HART Multiplexer System KFD HM 16 PROCESS AUTOMATION MANUAL ...

Page 2: ...elivery for Products and Services of the Electrical Industry published by the Central Association of the Electrical Industry Zentralverband Elektrotechnik und Elektroindustrie ZVEI e V in its most recent version as well as the supplementary clause Expanded reservation of proprietorship HART Multiplexer System KFD HM 16 ...

Page 3: ...nication 10 3 2 Possible Applications 11 3 3 Integration into Operating Software 12 3 4 System Structure 12 4 Mounting and Installation 16 4 1 DIN Mounting Rail 16 4 2 Power Rail 17 4 3 Mounting 18 4 4 Connecting the Multiplexer Master 19 4 5 Connecting the Multiplexer Slaves 23 4 6 Connecting the Termination Board 26 4 7 Information Regarding Electromagnetic Compatibility 27 5 Commissioning 28 5 ...

Page 4: ... DTM 39 6 6 Inserting the Multiplexer Devices 42 6 7 Displaying Device Information and Setting Parameters 44 6 8 HART Scan 52 6 9 Adding DTMs Manually 61 7 Operation 62 7 1 Device Functions 62 7 2 Software Functions 65 7 3 Diagnosis and Troubleshooting 72 8 Dismounting Maintenance and Repair 78 9 Appendix 80 9 1 Supported HART Commands 80 9 2 Assignment of the 26 Pin IDC Socket with Analog HART Si...

Page 5: ...ng Dismounting Disposal The documentation consists of the following parts Present document Instruction manual Datasheet Additionally the following parts may belong to the documentation if applicable EU type examination certificate EU declaration of conformity Attestation of conformity Certificates Control drawings Additional documents Pepperl Fuchs GmbH Lilienthalstraße 200 68307 Mannheim Germany ...

Page 6: ...will find warning messages whenever dangers may arise from your actions It is mandatory that you observe these warning messages for your personal safety and in order to avoid property damage Depending on the risk level the warning messages are displayed in descending order as follows Informative Symbols Action This symbol indicates a paragraph with instructions You are prompted to perform an actio...

Page 7: ...thereby maintain the conventional analog 4 mA to 20 mA circuits The devices of the HART multiplexer system act as gateways between the field devices and the control side The devices of the HART multiplexer system can be used in the Zone 2 hazardous area or in the non hazardous area The devices are supplied with 24 VDC The devices are connected to a maintenance station or the process control system...

Page 8: ...e station via the RS 485 interface You can connect additional participants via an additional RS 485 interface The transfer rate is max 57600 baud The device is connected to the multiplexer slaves via a 14 pin ribbon cable The device has a 14 pin IDC socket on the bottom of the device for this purpose The device is connected to the termination board via a 26 pin ribbon cable The device has a 26 pin...

Page 9: ...on cable The device has a 14 pin IDC socket on the bottom of the device for this purpose The device is connected to the termination board via a 26 pin ribbon cable The device has a 26 pin IDC socket on the front of the device for this purpose The device address is set using a rotary switch You can assign addresses 1 to 15 The address 0 is reserved for the multiplexer master and may therefore not b...

Page 10: ...the standard circuit of the analog input This does not affect the analog signal The HART protocol is a master slave protocol This means that a field device responds only when it is addressed Burst mode is an exception The message duration is a few hundred milliseconds meaning that two to three messages can be transferred per second The HART commands are divided into 3 groups Universal commands The...

Page 11: ...o the field device takes place parallel to the transmission of the 4 mA to 20 mA signal and therefore has no affect on the processing of measured values by the process control system The system provides a subordinate service level The HART multiplexer system can also detect measured values For field devices that are mounted in hazardous areas the connection takes place on the non hazardous side of...

Page 12: ...esentation and designation of the functions in the individual operating tools may vary greatly A representation that is valid generally is not possible at this point Information regarding the configuration parameterization operation and diagnostic options of the HART multiplexer system can be found in the manual Installation and Configuration Device Type Manager DTM 3 4 System Structure The field ...

Page 13: ...series This type of mounting is independent of the process control system used and of any existing control units Figure 3 3 Converter 26 pin ribbon cable 14 pin ribbon cable DIN mounting rail up to 31 HART multiplexer masters up to 15 HART multiplexer slaves per master 24 V DC RS 485 connection Up to 16 field devices Up to 16 field devices DCS Computer based maintenance station 1 2 3 4 5 6 7 8 19 ...

Page 14: ...tiplexer slaves in parallel or series The termination boards are specifically tailored to the individual process control systems Figure 3 4 Converter 26 pin ribbon cable 14 pin ribbon cable DIN mounting rail up to 15 HART multiplexer slaves per master 24 V DC Up to 16 field devices Up to 16 field devices DCS Connection via system connector Computer based maintenance station up to 31 HART multiplex...

Page 15: ...14 pin ribbon cable DIN mounting rail up to 15 HART multiplexer slaves per master 24 V DC Up to 16 field devices DCS Redundant power supply Power supply Termination board with isolators Up to 16 field devices Redundant power supply Power supply Termination board with isolators Connection via system connector Computer based maintenance station up to 31 HART multiplexer masters RS 485 connection 1 2...

Page 16: ...ly used in a general electrical installation can cause sparks that can ignite the surrounding potentially explosive atmosphere Never install devices that have already been operated in general electrical installations in electrical installations used in combination with hazardous areas Danger Explosion hazard from pollution An excessively polluted surface of the device can become conductive and con...

Page 17: ... is factory equipped with cover and end caps These parts cover empty and open segments of the Power Rail Thus the Power Rail is protected from contamination Additionally the cover and end caps prevent that electrically conductive parts come in contact with the Power Rail Power Rail UPR 03 The Power Rail UPR 03 has 3 conductors 2 conductors for power 1 conductor for collective error messaging Figur...

Page 18: ...nal blocks or remove the terminal blocks Danger Explosion hazard from wrong mounting The device safety can be impaired by external environmental influences and by mechanical stress That can lead to sparking that can ignite a surrounding potentially explosive atmosphere Mount the device in a surrounding enclosure that complies with IEC EN 60079 0and that is rated with the degree of protection IP54 ...

Page 19: ...s can ignite the surrounding potentially explosive atmosphere Do not use HART multiplexer devices and HART termination boards in intrinsically safe circuits Danger Explosion hazard from live wiring of circuits If you connect or disconnect energized circuits in a potentially explosive atmosphere sparks can ignite the surrounding atmosphere Only connect or disconnect energized circuits in the absenc...

Page 20: ...ter Power Supply Connect the power supply to terminals 17 and 18 Observe the tightening torque for the terminal screws The tightening torque is 0 5 Nm to 0 6 Nm Figure 4 5 Danger Danger to life from electric shock Absent or insufficient insulation can result in electric shock Only connect supplies that provide protection against electric shock e g SELV or PELV DIN mounting rail 1 2 3 4 5 6 7 8 19 ...

Page 21: ...l Figure 4 6 Danger Danger to life from electric shock Absent or insufficient insulation can result in electric shock Only connect supplies that provide protection against electric shock to power feed modules e g SELV or PELV Caution Property damage from use of isolators for Power Rail supply Using the isolators for Power Rail supply can damage the isolators and make the Power Rail fail Do not sup...

Page 22: ...485 specifications 3 Connect additional participants to terminals 19 20 and 21 Observe the tightening torque for the terminal screws The tightening torque is 0 5 Nm to 0 6 Nm Do not exceed a cable length of 1200 m Use a shielded twisted two core cable Terminal Designation Meaning 13 19 Shield Cable shielding 14 20 RxD TxD RS 485 B RS 485 differential signal 15 21 RxD TxD RS 485 B Table 4 1 Connect...

Page 23: ...ors of inadequately attached cables can cause sparks that can ignite the surrounding potentially explosive atmosphere When installing the device ensure that the cables are adequately attached Danger Explosion hazard from using of non intrinsically safe circuits in intrinsically safe circuits Using non intrinsically safe devices in intrinsically safe circuits suspends the type of protection This ca...

Page 24: ...ART multiplexer slave 4 5 1 Supplying the Multiplexer Slaves The multiplexer slaves are supplied with power from the multiplexer master via the 14 pin ribbon cable Connecting the Multiplexer Slave Power Supply Connect the multiplexer slave to the multiplexer master via the 14 pin ribbon cable K HM14 Figure 4 8 KFD0 HMS 16 1 2 23 1 2 14 Termination Board KFD2 HMM 16 KFD0 HMS 16 24 25 26 Zone 2 HART...

Page 25: ...or the HART signal of the analog measuring circuits of the field devices The remaining 10 cables are connected to ground For the assignment of the IDC socket see chapter 9 2 Pepperl Fuchs provides special termination boards Various connection options are available for these termination boards Connecting Multiplexer Devices Field Devices and the Termination Board Connect the multiplexer device to t...

Page 26: ...ger Danger to life from electric shock Absent or insufficient insulation can result in electric shock Only connect supplies that provide protection against electric shock to power feed modules e g SELV or PELV Danger Danger to life from electric shock Absent or insufficient insulation can result in electric shock Maintain sufficient distance between the connection lines terminals housing and the e...

Page 27: ...The tightening torque is 0 5 Nm to 0 6 Nm 4 6 2 Connecting the Process Control System to the Termination Board Pepperl Fuchs provides special termination boards Various connection options are available for these termination boards Connecting the Termination Board and Process Control System 1 Connect the process control system to the termination board using screw terminals or spring terminals See c...

Page 28: ...ta on the connected field devices is accessed The field devices are generally found in a project tree beneath the multiplexer slaves The multiplexer master integrates the slave unit with slave address 0 Device data device parameters and device diagnoses can be accessed via the project tree For the structure of a project tree see chapter 6 8 The data parameter and diagnostic windows display the dat...

Page 29: ...Using operating elements in a potentially explosive atmosphere can cause sparks that can ignite the surrounding atmosphere Only use operating elements e g switch slider button etc in the absence of a potentially explosive atmosphere DIP switch 1 Meaning Position Off Normal state Table 5 1 DIP switch 2 3 Meaning Position Off Off 9600 baud Off On 19200 baud On Off 38400 baud On On 57600 baud Table 5...

Page 30: ...In the factory setting the address 0 is set Ensure that you do not assign any addresses more than once Color Meaning Red Fault indication detected during the initialization process Green Operating indication Orange HART communication with a field device Table 5 5 Color Status Meaning Red Off Initialization process Green Flashes Orange Off Table 5 6 Color Status Meaning Red Off Scanning process Gre...

Page 31: ...s default setting Data stored in non volatile memory is retained Note If a field device is connected to the multiplexer device during operation a scan must be performed afterwards so that the field device can be addressed via HART This scanning process is triggered automatically when the multiplexer device is switched on see chapter 7 1 5 The process can also be started manually in the maintenance...

Page 32: ...the default setting is 0 Scan command see chapter 7 1 7 and commands 146 and 147 Of the existing scan parameters only the scan command is stored in non volatile memory The command indicates which HART command 1 2 or 3 is to be a scan command to the field devices Master type primary or secondary master see command 151 This sets the priority for access to the HART field device A primary master alway...

Page 33: ... as to bus systems such as PROFIBUS MODBUS and ControlNet PACTware offers many features that allow users to simplify the plant documentation to create trend curves and to monitor signals using HART data Device and Communication DTM The DTM DTM Device Type Manager contains all the data and functions of a device Every DTM contains its own user interface optimized for the device The device and commun...

Page 34: ...th the field devices using communication protocols such as the HART protocol or PROFIBUS protocol DTM HART Comm This package contains the HART communication DTM which is necessary for communication between the host and the HART multiplexer DTM DTMs of the field devices The manufacturers of field devices provide specific DTMs which allow access to all functions of the respective devices and therefo...

Page 35: ... field devices 6 Install the DTM Generic HART if necessary Note The cross device properties of the software are described in the manual Installation and Configuration Device Type Manager DTM You can download this manual free of charge from our website www pepperl fuchs com in the product selector under Products Software PACTware Product list PACTware 4 1 Documents The following section describes o...

Page 36: ... monitor for the communication protocol can be opened Menu bar The menu bar contains the following drop down menus File Here you can create a new project save the current project or load an existing project Edit Contains the copy cut and paste functions View Here you can display or hide various symbol and status bars as well as the device catalog fault monitoring etc Project Contains the basic pro...

Page 37: ...16 Configuration 2018 04 37 Figure 6 2 PACTware main window Note Additional information on PACTware can be found in the manual Installation and Configuration Device Type Manager DTM Project window Editing window Command bar Menu bar ...

Page 38: ...pter 4 4 3 4 Start PACTware as described in the manual Installation and Configuration Device Type Manager DTM The PACTware main window is displayed See chapter 6 3 Enabling Memory Optimized Operation In combination with the DTMs for the multiplexer master we recommend enabling the Memory optimized operation option 1 Open the menu Extras Options 2 Enable Use memory optimized project management 3 Co...

Page 39: ...oject add a communication DTM from the device catalog Adding Communication DTMs 1 In the project window select HOST PC using the right mouse button 2 In the context menu select Add device 3 Select the DTM HART communication from the list 4 Confirm your selection with OK The communication DTM is included in the project In the project tree the communication DTM bears the name of the COM port on whic...

Page 40: ...rter used switching the request to send control on or off may be necessary to switch cleanly between receive and transmit mode HART protocol Master 2 HART masters may be connected to a HART signal loop whereby the parameterization must differentiate between the primary master and the secondary master This setting is defined here Preamble In accordance with the HART standard a corresponding number ...

Page 41: ...HART Multiplexer System KFD HM 16 Configuration 2018 04 41 Figure 6 4 HART communication parameter window ...

Page 42: ...mmunication DTM via the Additional functions Scanlist function Updating the Scan List 1 In the project window right click to select the HART communication DTM e g COM8 2 In the context menu select Additional functions 3 Select Scanlist 4 Start the scan by clicking Update The scan list is updated and displayed Figure 6 5 HART communication window scan list ...

Page 43: ...rting Multiplexer Devices via Context Menu 1 In the project window right click to select the HART communication DTM e g COM8 2 In the context menu select Add device 3 Select the KFD2 HMM 16 DTM from the list and confirm by clicking OK The KFD2 HMM 16 DTM is added to the project Note To establish the connection to a device in the project tree or to disconnect the connection right click to select th...

Page 44: ...the project window right click to select multiplexer master KFD2 HMM 16 2 Select Load from device in the context menu 3 If no connection has been established previously a window opens and you are asked whether you want to establish the connection to the device Select Yes The connection to the multiplexer master is established and the device data can be read Figure 6 6 Load data from device ...

Page 45: ... and is unique depending on the manufacturer Together with the manufacturer ID the device type ID can be used to identify the device type uniquely Serial number The serial number of the device Hardware revision Hardware revision of the multiplexer master Software revision Software revision of the multiplexer master Device revision The revision of the devices supported Date The date on which the de...

Page 46: ...2018 04 46 HART Multiplexer System KFD HM 16 Configuration Figure 6 7 General window device information ...

Page 47: ...xer Master In this case the communication between the host and the HART multiplexer system HART communication 1 is described The Communication to host HART master as field device section displays the following information about the device Address The RS 485 address of the multiplexer master is displayed here Unique identifier The unique non variable long address of the multiplexer master HART revi...

Page 48: ...nt indicates whether the multiplexer master addresses the field devices as primary or secondary HART master Retries on Busy Number of repeat attempts to establish communication with the field device if the field device reports Busy Retries on error Number of repeat attempts to establish communication with the field device if a fault occurs Loop scan address range This defines the address range in ...

Page 49: ...e editing window open the Configuration Command caching menu The Command caching window is displayed 3 Click Apply to confirm your selection 4 Select Revert to reset your selection The command parameters for the multiplexer master are displayed and set in the Command caching menu Mode This switches the Command caching function on or off Disabled The function is switched off Default caching The fun...

Page 50: ...2018 04 50 HART Multiplexer System KFD HM 16 Configuration Figure 6 10 Command caching window ...

Page 51: ... Activated modules window select the active multiplexer slaves for each multiplexer master By default only the master is activated Select the connected multiplexer slaves depending on the expansion level Click Select all to select all multiplexer devices Click Select none to select no multiplexer devices With a single click you can place or remove individual checkmarks in the list The checkmarks s...

Page 52: ... Function via Menu 1 Use the mouse to double click the multiplexer master KFD2 HMM 16 in the project window 2 In the editing window open the Related tasks HART Scan menu The HART Scan window is displayed Starting the HART Scan Function via Context Menu 1 In the project window right click to select multiplexer master KFD2 HMM 16 2 In the context menu select Additional functions 3 In the dropdown li...

Page 53: ...occurs Update modules Select this option if a module has been removed or added Update field devices Select this option if field devices have been removed or added Update FDT project Select this option to adapt the FDT project to the current HART topology 2 Click Next to confirm and continue with the HART scan Before the HART scan starts you can select which active multiplexer devices are to be sea...

Page 54: ...2018 04 54 HART Multiplexer System KFD HM 16 Configuration Figure 6 13 HART Scan wizard ...

Page 55: ...HART Multiplexer System KFD HM 16 Configuration 2018 04 55 Figure 6 14 HART Scan Wizard communication options ...

Page 56: ...tected by any DTM However the identification attribute is not defined in the HART protocol and is not recognized in device communication The file that is read at this point converts the identification attribute so that this information can be read in the DTM This file must be provided by the device manufacturer 1 Open the Explorer by clicking Open file under the Mapping file field 2 Select the req...

Page 57: ...ART scan Match result Explanation Single green checkmark The assigned DTM matches the device exactly Two green checkmarks There are several DTMs that match the field device data Individual gray checkmark The Generic HART DTM has been assigned to the device as no device specific DTM has been found Yellow warning triangle The assigned DTM does not match the device Table 6 2 Explanation of the match ...

Page 58: ...RT Scan result Click on a row in the table to select the corresponding field device and to display additional options in the lower section of the editing window In the Assigned DTM dropdown list you can manually select which DTM is to be used for the field device Figure 6 17 ...

Page 59: ...on by clicking Next to complete the HART scan The HART topology determined in the HART scan can then be added to the device tree in the project window You will be prompted to save the project to store the modified HART topology Note Some manufacturers have different DTMs for the same device family In this case you have to select the correct DTM from the dropdown list Note Some DTMS do not make thi...

Page 60: ...2018 04 60 HART Multiplexer System KFD HM 16 Configuration After completion of the HART scan the devices are added to the device tree in the project window Figure 6 19 ...

Page 61: ...lexer slave that the device is to be assigned to The device specific DTM is then added to the project Adding a Device Specific DTM Manually via Context Menu 1 In the project window right click to select the DTM of the multiplexer slave that the device should be assigned to 2 In the context menu select Add device 3 Select the device specific DTM from the list and confirm with OK 4 Select the signal...

Page 62: ...256 channels by connecting up to 15 multiplexer slaves Up to 7936 signal loops per RS 485 interface Automatic search of all existing HART compatible field devices scan Switchable independent cyclical querying of the HART variables command caching Acts as the primary or secondary multiplexer master Fast RS 485 interface multidrop with up to 56700 baud Integrated modem Removable terminals Power supp...

Page 63: ...communicates with up to 7936 field devices 7 1 4 HART Communication As a digital communication system for maintenance and configuration purposes the HART protocol is supported by many field devices with conventional analog 4 mA to 20 mA circuits The HART signal is modulated to the analog current as an FSK signal see chapter 3 1 The modulator demodulator circuit modem required is integrated in the ...

Page 64: ...ion The multiplexer device can read cyclical data from up to 31 field devices To do this the scan option command 137 must be set for the field device and the scan function in the multiplexer device must be activated command 149 function 1 The Scan command option command 147 defines which data is to be transferred see chapter 9 1 If the scan function is activated the field devices with the scan opt...

Page 65: ...vice List Scanning Signal Loops 1 Use the mouse to double click the multiplexer master KFD2 HMM 16 in the project window 2 In the editing window open the Device actions Scan loops menu The Scan loops for field devices window is displayed In the Scan loops for field devices window you can start a scan to identify all field devices connected to the multiplexer master Proceed as follows In the left h...

Page 66: ...2018 04 66 HART Multiplexer System KFD HM 16 Operation Figure 7 1 Scan loops window ...

Page 67: ...e column Explanation Modules Module to which the field device is connected Loop Signal loop in which the field device is connected Polling address Polling address of the field device Unique ID Unique unchanging address of the field device Device type Device type Manufacturer Manufacturer of the field device HART revision HART revision under which the field device is operated Long tag Long device t...

Page 68: ...2018 04 68 HART Multiplexer System KFD HM 16 Operation Figure 7 2 Connected field devices window ...

Page 69: ...information regarding the multiplexer master and the field devices connected to it can be retrieved In the System overview section the device tree is displayed on the left hand side with the connected devices Click on a device to select it The right hand section displays device specific detailed diagnostic information Select the Update diagnosis button above the System overview section to update t...

Page 70: ...s Reset Configuration changed flag menu The Reset Configuration changed flag window is displayed The Configuration changed flag is a flag of the standard HART device status It is always set when a parameter has been changed in the configuration of the device In the Reset Configuration changed flag window you can reset the Configuration changed flag To do this select the Reset Configuration changed...

Page 71: ... window you can reset the multiplexer master To do so select the Reset device button Figure 7 5 Reset device window Note Please ensure that the multiplexer master restarts after the reset During the reset communication to all connected field devices is initially interrupted After the restart all signal loops are scanned for any existing HART compatible field devices During this time no communicati...

Page 72: ...tes can occur during the initialization process Red Green Orange Cause Corrective action Off Off Off No power supply present LED s faulty Check the power supply Switch on DIP switch 1 briefly disconnect the power supply LEDs flash one after the other On On On Device hardware fault CPU ROM Send the device to Pepperl Fuchs for repair On Off Off Device hardware fault CPU ROM Send the device to Pepper...

Page 73: ... coded bit by bit If bit 7 is deleted 0 the first status byte contains a summary of command responses This information is numbered and not coded bit by bit Communication Faults The byte contains information concerning the receipt of a message The individual bits indicate a detected fault which has resulted in the message not being accepted It is therefore not possible to provide a response to the ...

Page 74: ... has no faults but contains fewer bytes than expected for the execution of the command 17 18 59 129 to 141 145 147 149 151 153 154 155 157 8 Warning Here 132 Preamble length is not within the range of 5 to 20 and has been set to 5 or 20 132 9 1st parameter too large The first of the two parameters is too large 145 11 2nd parameter too large The second of the two parameters is too large 145 16 Acce...

Page 75: ...ed device status available Further status messages are available and can be called up see chapter 7 3 3 Read extended device status see chapter 7 3 3 3 Analog output current cannot be changed primary variable The primary variable is set to the requested value and no longer follows the process Always 1 Has no function on the multiplexer device as there is no analog output 2 Analog output current ha...

Page 76: ...running and must be completed 6 Rebuild Rebuild operation is running and must be completed 5 Internal EEPROM write operation Switching off the power supply may result in the loss of parameterization 4 Scan Scanning process is running and must be completed 3 Self test command 41 Performs the device self test such as when switching on the supply voltage If no fault occurs the status message Malfunct...

Page 77: ...following table Bit Status Meaning Action 7 Reserved Reserved 6 Searching Field device is searched for due to the Disappeared report Check the cabling Check the field device 5 Disappeared Field device is no longer responding 4 Appeared Field device is responding again Check the cabling 3 Mismatched Another field device has responded instead Field device was replaced with another field device Check...

Page 78: ... field circuit 2 Disconnect the control circuit 3 Disconnect the power supply Danger Explosion hazard from live wiring of circuits If you connect or disconnect energized circuits in a potentially explosive atmosphere sparks can ignite the surrounding atmosphere Only connect or disconnect energized circuits in the absence of a potentially explosive atmosphere Danger Danger to life from using damage...

Page 79: ...er 4 into the groove of the red mounting bracket 3 2 Turn the screwdriver 4 in the groove until the red mounting bracket 3 springs back 3 Repeat these steps on the other side of the device 4 Remove the device 2 from the DIN mounting rail 1 Figure 8 1 Dismounting the device from the DIN mounting rail 1 35 mm DIN mounting rail 2 Device 3 Mounting bracket 4 Slot head screwdriver 3 1 4 4 2 ...

Page 80: ...ity purposes and have no significance However in the field devices e g scan function they have the following meanings 1 Read primary variable 2 Read primary variable as a current mA and percentage of the measuring range 3 Read primary variable as a current mA and four pre defined dynamic variables 2 3 6 Set polling address This command will not be accepted and the messages Access restricted or Bus...

Page 81: ...he signal loop This command can be used to query the status of each signal loop The following information is provided Existing hardware faults Scan is in progress Scan activated for this signal loop Field device is being searched for due to the Disappeared designation Field device is no longer responding Disappeared Field device responds again Appeared Another field device has responded instead Mi...

Page 82: ...he multiplexer devices are returned 143 Delete all communications of the multiplexer devices The communication statistics concerning the multiplexer devices are deleted 144 Number of message repeats Repetitions in the event of Busy report 0 to 11 default setting is 0 Repetitions in event of communication faults 0 to 11 default setting is 2 145 Write the number of message repeats 146 Read the speci...

Page 83: ...lable for the specified signal loop is provided These include Number of the signal loop Fault flag 0 OK 1 special scan is not active Polling address always 0 as there is no multidrop The minimum number of data bytes for the special scan The scan command used Extended address Number of available data bytes Data byte content 159 Write special scan parameters For the specified signal loop and the pol...

Page 84: ...ound 3 Analog ground 16 HART channel 9 4 Analog ground 17 HART channel 10 5 Analog ground 18 HART channel 11 6 HART channel 1 19 HART channel 12 7 HART channel 2 20 HART channel 13 8 HART channel 3 21 HART channel 14 9 HART channel 4 22 HART channel 15 10 HART channel 5 23 HART channel 16 11 HART channel 6 24 Analog ground 12 HART channel 7 25 Analog ground 13 HART channel 8 26 Analog ground Table...

Page 85: ...col Specification HCF_SPEC 13 Revision 7 5 https fieldcommgroup org hart specifications 2 HART Communication Foundation HART Application Guide HCF_LIT 039 Rev 7 1 https fieldcommgroup org technologies hart documents and downloads hart 3 Romilly Bowden HART Field Communications Protocol A Technical Overview 2007 Fisher Rosemount ...

Page 86: ... Type Manager contains all the data and functions of a device Every DTM contains its own user interface optimized for the device The device and communication DTMs can be integrated in any FDT frame application such as PACTware The DTM offers almost no restriction with regard to display and user guidance This means that all available device functions can be operated according to the user s needs Op...

Page 87: ...uests and commands Master slave system Communication system in which a master initiates all transmission requests and commands and a slave responds to the transmission requests and commands Multidrop In contrast to point to point connections several field devices may be connected to one segment core pair To allow each device to be addressed individually the device must have a unique address As com...

Page 88: ...on is for example the master slave connection of multiplexer device to field device Primary variable This variable is a process measured value of the field device The unit differs according to the HART command see commands 1 2 and 3 The primary variable of a pressure transducer may be for example the measured process pressure in bar Primary master See Multi master Secondary variable This variable ...

Page 89: ...HART Multiplexer System KFD HM 16 Notes 2018 04 89 ...

Page 90: ...2018 04 90 HART Multiplexer System KFD HM 16 Notes ...

Page 91: ...HART Multiplexer System KFD HM 16 Notes 2018 04 91 ...

Page 92: ...erl fuchs com Worldwide Headquarters Pepperl Fuchs GmbH 68307 Mannheim Germany Tel 49 621 776 0 E mail info de pepperl fuchs com For the Pepperl Fuchs representative closest to you check www pepperl fuchs com contact PROCESS AUTOMATION PROTECTING YOUR PROCESS DOCT 0120F 04 2018 ...

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