(12) United States Patent
`Carew et al.
`
`I 1111111111111111 11111 111111111111111 lllll lllll lllll 111111111111111 11111111
`US006212483Bl
`US 6,212,483 Bl
`Apr. 3, 2001
`
`(10) Patent No.:
`(45) Date of Patent:
`
`(54) APPARATUS AND METHOD OF PROVIDING
`DIAGNOSTIC INFORMATION TO AN
`OPERATOR
`
`5,648,898 * 7/1997 Moore-McKee et al. ............. 701/29
`5,657,224 * 8/1997 Lonn et al.
`............................ 701/29
`5,949,330 * 9/1999 Hoffman et al. ..................... 340/438
`
`(75)
`
`Inventors: Kevin J. Carew, Peoria; Robert R.
`Sychra, Washington, both of IL (US)
`
`(73) Assignee: Caterpillar Inc., Peoria, IL (US)
`
`( *) Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by O days.
`
`(21) Appl. No.: 09/159,248
`
`(22) Filed:
`
`Sep. 23, 1998
`
`Int. Cl.7 ...................................................... G06F 11/30
`(51)
`(52) U.S. Cl. .......................... 702/183; 702/184; 702/185;
`701/29; 701/30; 701/31; 701/34; 701/35;
`701/50
`(58) Field of Search ..................................... 702/183, 184,
`702/185; 701/29-31, 34-35, 50
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`5,371,487 * 12/1994 Hoffman et al. .................. 340/425.5
`5,532,927 * 7/1996 Pink et al.
`............................. 701/34
`
`* cited by examiner
`
`Primary Examiner-Marc S. Hoff
`Assistant Examiner-Hien Vo
`(74) Attorney, Agent, or Firm-Byron G. Buck; W. Bryan
`McPherson, III
`
`(57)
`
`ABSTRACT
`
`The present invention relates to an apparatus and method of
`providing diagnostic information to an operator of a work
`machine. Whether the work machine control system is in
`diagnostic messaging mode is determined. At least one
`diagnostic fault parameter descriptive message is read from
`a memory. The diagnostic fault parameter descriptive mes(cid:173)
`sage is provided to the operator. Preferably, diagnostic
`messaging mode is determined by whether the work
`machine control system is in service mode and whether the
`diagnostic text function is selected. Advantageously, a com(cid:173)
`ponent identification number descriptive message is pro(cid:173)
`vided in a first character display and a failure mode indi(cid:173)
`cating number descriptive message is provided in a second
`character display of an operator interface.
`
`6 Claims, 4 Drawing Sheets
`
`404
`
`410
`
`401
`
`NO
`
`412
`
`414
`
`READ
`CID NUMBER
`AND ASSOCIATED
`MESSAGES
`
`/ - - -~ - -~
`READ
`FM! NUMBER
`AND ASSOCIATED
`MESSAGES
`
`NO
`
`NO
`
`Page 1 of 9
`
`CATERPILLAR EXHIBIT 1041
`CATERPILLAR v. WIRTGEN
`IPR2018-01091
`
`

`

`Apr.3, 2001
`Apr. 3, 2001
`
`Sheet 1 of 4
`Sheet 1 of 4
`
`US 6,212,483 Bl
`
`US 6,212,483 B1
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`Page 2 of 9
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`

`

`U.S. Patent
`U.S. Patent
`
`Apr. 3, 2001
`Apr.3, 2001
`
`Sheet 2 of 4
`Sheet 2 of 4
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`US 6,212,483 B1
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`

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`U.S. Patent
`U.S. Patent
`
`Apr.3, 2001
`Apr. 3, 2001
`
`Sheet 3 of 4
`Sheet 3 of 4
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`US 6,212,483 B1
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`

`

`U.S. Patent
`
`Apr. 3, 2001
`
`Sheet 4 of 4
`
`US 6,212,483 Bl
`
`401
`
`START
`
`412
`
`414
`
`419
`
`SELECT
`NEXT
`FAULT
`
`READ
`CID NUMBER
`AND ASSOCIATED
`MESSAGES
`
`READ
`FMI NUMBER
`AND ASSOCIATED
`MESSAGES
`
`PROVIDE INFO TO
`USER INTERFACE
`AND DISPLAY
`INFORMATION
`
`410
`
`DISPLAY
`> - - - - - - - NOFAULT
`PRESENT
`
`SELECT
`NEXT
`FAULT
`
`422
`
`426
`
`DISCONTINUE
`DISPLAYING
`FAULT
`INFORMATION
`
`NO
`
`Page 5 of 9
`
`

`

`US 6,212,483 Bl
`
`2
`DISCLOSURE OF THE INVENTION
`
`1
`APPARATUS AND METHOD OF PROVIDING
`DIAGNOSTIC INFORMATION TO AN
`OPERATOR
`
`TECHNICAL FIELD
`
`This invention relates generally to an apparatus and
`method of providing diagnostic information to an operator
`of a work machine and, more particularly, to an apparatus
`and method that provides at least one diagnostic fault
`parameter descriptive message to the operator.
`
`BACKGROUND ART
`
`5
`
`10
`
`In one aspect of the present invention, a work machine
`adapted to be controlled by an operator is provided. The
`work machine includes a frame, a plurality of ground
`engaging devices, an operator compartment, an engine, and
`a work machine control system. The frame and operator
`compartment are supported by the ground engaging devices.
`The engine is operably coupled to the ground engaging
`devices. The work machine control system has a diagnostic
`display system which includes a memory, a controller, and
`an operator interface. The memory is adapted to store
`diagnostic fault parameter descriptive messages. The con(cid:173)
`troller is associated with the memory and is adapted to
`receive the diagnostic parameter descriptive messages,
`determine whether the work machine control system is in
`diagnostic messaging mode, and responsively provide at
`least one diagnostic fault parameter descriptive message to
`the operator interface. The operator interface receives the
`diagnostic fault parameter descriptive message and provides
`the diagnostic fault parameter descriptive message to the
`operator in the operator compartment.
`In another aspect of the present invention, a method of
`providing diagnostic information to an operator of a work
`25 machine is provided. A determination is made as to whether
`the work machine control system is in diagnostic messaging
`mode. At least one diagnostic fault parameter descriptive
`message is read from memory. The diagnostic fault param-
`eter descriptive message is provided to the operator.
`In another aspect of the present invention, a method of
`providing diagnostic information to an operator of a work
`machine is provided. A determination is made as to whether
`the work machine control system is in service mode. A
`determination is made as to whether diagnostic text is
`35 selected. A determination is made as to whether the work
`machine control system is in diagnostic messaging mode. A
`determination is made as to whether there are any diagnostic
`fault parameters stored in memory. At least one diagnostic
`fault parameter descriptive message is read from memory.
`40 The diagnostic fault parameter descriptive message is pro(cid:173)
`vided to the operator in a scrolling text message on a display.
`These and other aspects and advantages of the present
`invention will become apparent to those skilled in the art
`upon reading the detailed description of the best mode for
`45 carrying out the invention in connection with the drawings
`and appended claims.
`
`BRIEF DESCRIPTION OF DRAWINGS
`
`For a better understanding of the invention, reference may
`be made to accompanying drawings, in which:
`FIG. 1 is a side elevational view of a motor grader
`according to one embodiment of the present invention;
`FIG. 2 is a schematic view of a diagnostic display system
`used in connection with the preferred embodiment of the
`present invention;
`FIG. 3 is a top view of an operator interface used in
`connection with the preferred embodiment of the present
`invention; and
`FIG. 4 is a flowchart of software logic implemented in a
`preferred embodiment of the present invention.
`
`BEST MODE FOR CARRYING OUT THE
`INVENTION
`
`A preferred embodiment of the present invention provides
`an apparatus and method of providing diagnostic informa-
`
`65
`
`15
`
`20
`
`30
`
`Work machines having an attached implement, such as
`motor graders, excavators, mining shovels, cold planer,
`backhoes, wheel loaders, track type tractors, and the like, are
`used for moving earth. Such implements may include
`blades, impact rock rippers, and other material handling
`apparatus. Typically, work machines may be configured to
`perform various work cycles. For example, a motor grader
`typically has a blade used to cut a particular grade and/or
`slope across the ground. Because the motor grader has many
`joints in a range of movement, many sensors, electronic
`circuits, solenoids, and mechanisms used to provide control
`of the work machine. Sometimes, these portions of the work
`machine can fail or malfunction if not maintained properly.
`Currently, on work machines, it is possible to damage the
`machine or incorrectly move or cut the earth if portions of
`the work machine are not functioning properly. For example,
`on a motor grader, if a grade sensor malfunctions, the motor
`grader will not cut the proper grade and/or slope across the
`ground. Similarly, if a slope sensor malfunctions, a motor
`grader will not cut the proper slope and/or grade across the
`ground. This could cause damage to the blade of the motor
`grader or provide an incorrect finished grade and/or slope to
`the ground.
`Additionally, current diagnostic display systems on work
`machines typically provide abbreviations or codes represen(cid:173)
`tative of a fault condition to an operator. For example, a
`numerical code may be provided to an operator to indicate
`a failed grade sensor on a motor grader. Generally, once the
`operator receives the abbreviation or numerical code, the
`operator must use a cross reference table or the user's
`manual to interpret and identify the particular component
`and type of fault represented by the abbreviation or numeri(cid:173)
`cal code.
`It is undesirable to force the operator to retain a cross
`reference chart and keep it with the work machine. Similarly,
`it is undesirable to force the operator to refer to the user's
`manual in order to understand the abbreviation or numerical 50
`code, particularly when work machines are used on a large
`construction site, large mining site, or rented and the docu(cid:173)
`mentation for the machine is kept in a remote office. In this
`situation, it is difficult for operators, particularly new or less
`skilled operators, to interpret and understand the abbreviated 55
`or numerical codes.
`Accordingly, the art has sought an apparatus and method
`of providing diagnostic information to an operator of the
`work machine which: provides at least one diagnostic fault
`parameter descriptive message to the operator; eliminates 60
`the need for an operator to refer to a cross reference chart or
`other documentation to understand the diagnostic fault
`parameter; reduces the required skill and knowledge for an
`operator of the work machine; and is more economical to
`use.
`The present invention is directed to overcoming one or
`more of the problems as set forth above.
`
`Page 6 of 9
`
`

`

`US 6,212,483 Bl
`
`3
`tion to an operator of a work machine 100. The following
`description uses a motor grader 102 having wheels 104 and
`an implement, typically a blade 106, as an example only.
`This invention can be applied to other types of work
`machines 100 having tracks (not shown) instead of wheels
`104 and other types of implements well known in the art.
`Other examples include mining shovels, cold planers, wheel
`loaders, backhoes, track type tractors, hydraulic excavators,
`track type loaders, and the like.
`In FIG. 1, a frame 108 is supported by a plurality of
`ground engaging devices 104. An engine 110 is operably
`coupled to the ground engaging devices 104. Additionally,
`an operator compartment 112 is supported by the ground
`engaging devices 104.
`In FIG. 2, the work machine 100 includes a diagnostic
`display system 200 sufficient to provide at least one diag(cid:173)
`nostic fault parameter descriptive message to the operator.
`Preferably, a diagnostic display system 200 includes a
`memory 202 associated with a controller 204 and an opera-
`tor interface 206. preferably, the memory 202 is adapted to 20
`store at least one diagnostic fault parameter descriptive
`message. Advantageously, diagnostic fault parameters such
`as those shown in the left column of Tables A and B shown
`below are stored in memory 202. Additionally, a descriptive
`message such as the messages indicated in the right columns
`of Tables A and B below are stored in memory 202.
`
`TABLE A
`
`FAILURE MODE INDICATING
`(FM!) NUMBER
`
`TEXT DISPLAY
`
`0
`
`2
`3
`
`4
`5
`6
`8
`9
`12
`13
`DEFAULT
`
`DATA ABOVE NORMAL
`DATA BELOW NORMAL
`ERRATIC DATA
`VOLTAGE TO HIGH OR SHORT
`TO BATTERY
`VOLTAGE TO LOW
`OPEN CIRCUIT
`SHORT TO GROUND
`ABNORMAL INPUT SIGNAL
`ABNORMAL TRANSMISSION
`FAILED DRIVER
`OUT OF CALIBRATION
`SEE SERVICE MANUAL
`
`COMPONENT
`IDENTIFICATION
`(CID) NUMBER
`
`168
`254
`650
`856
`857
`900
`901
`902
`903
`906
`907
`908
`909
`919
`DEFAULT
`
`TABLE B
`
`TEXT DISPLAY
`
`SYSTEM BATTERY VOLTAGE
`COL COMMUNICATION ERROR
`MACHINE HARNESS
`BLADE SLOPE SENSOR
`FRAME SLOPE SENSOR
`LEFT RAISE SOLENOID
`LEFT LOWER SOLENOID
`RIGHT RAISE SOLENOID
`RIGHT LOWER SOLENOID
`LEFT GRADE SENSOR
`RIGHT GRADE SENSOR
`BLADE ROTATION SENSOR
`CONSOLE DISPLAY
`HORN
`SEE SERVICE MANUAL
`
`The foregoing diagnostic fault parameters and descriptive
`messages are representative of diagnostic fault parameters
`and descriptive messages. However, other parameters and
`messages well known in the art could be readily and easily
`
`4
`used with the present invention without departing from the
`scope of the present invention as defined by the appended
`claims.
`An operator interface 206 is adapted to provide at least
`5 one configuration parameter to the operator in the operator
`compartment. The operator interface 206 may be a liquid
`crystal display, console, keyboard, push buttons, voice rec(cid:173)
`ognition devices, a laptop computer, speakers, or other
`interfaces well known in the art or, preferably, two eight
`10 character displays 301, 302 in combination with switches
`304. Preferably, the operator interface 206 is adapted to
`provide the diagnostic fault parameter descriptive message
`corresponding to a CID number to the operator in a scrolling
`text message on a first display 301 and provide the diag-
`15 nostic fault parameter descriptive message corresponding to
`a FMI number to the operator in a scrolling text message
`across a second display 302 of the user interface 206.
`Alternatively, the operator interface 206 may be adapted to
`provide the descriptive message to the operator as an audible
`message.
`A preferred embodiment of the operator interface 206 is
`shown in FIG. 3 as having a first eight character display 301
`and a second eight character display 302. Preferably, opera(cid:173)
`tor input switches 304 are included in the operator interface
`25 206.
`Referring back to FIG. 2, controller 204 is associated with
`the memory 202 and receives the at least one diagnostic fault
`parameter descriptive message from the memory 202.
`Further, controller 204 is adapted to receive the diagnostic
`30 parameter descriptive message, determine whether the work
`machine control system is in diagnostic messaging mode,
`and responsibly provide the diagnostic parameter descrip(cid:173)
`tive message to the operator interface 206.
`Referring now to FIG. 4, a flowchart of the software logic
`35 used in connection with the preferred embodiment is shown.
`Those skilled in the art could readily and easily write
`software implementing the flowchart shown in FIG. 4 using
`the instruction set, or other appropriate language associated
`with the particular microprocessor to be used. In a preferred
`40 embodiment, a Motorola 68HC11 is used in the electronic
`controller 204. However, other known microprocessors
`could be readily and easily used without deviating from the
`scope of the present invention as defined in the appended
`claims.
`First block 401 begins the program control. Program
`control passes from first block 401 to first decision block
`402. In first decision block 402. the electronic controller 204
`determines whether the control system is in service mode.
`Service mode is typically a function where the work
`50 machine is made available for various maintenance and
`evaluation functions. If the control system is not in service
`mode, program control passes to second block 404.
`Otherwise, program control passes to second decision block
`406.
`In second decision block 406, the electronic controller
`204 determines whether the control system determines
`whether the diagnostic text function is selected. In an
`alternative embodiment of the present invention, first deci(cid:173)
`sion block 402 and second decision block 406 could be
`60 replaced by a single decision block wherein the controller
`204 could use any of several parameters to determine
`whether a control system is in diagnostic messaging mode.
`If the diagnostic text function is not selected or,
`alternatively, if a control system is not in diagnostic mes-
`65 saging mode, program control passes to second block 404.
`Otherwise, program control passes to third decision block
`408.
`
`45
`
`55
`
`Page 7 of 9
`
`

`

`US 6,212,483 Bl
`
`20
`
`5
`In third decision block 408, the controller 204 determines
`whether there are any faults logged. Preferably, this deter(cid:173)
`mination is accomplished by reading from memory 202 any
`diagnostic fault parameters. Alternatively, those skilled in
`the art could readily and easily provide this information to
`controller 204 through the use of flags or other parameters
`commonly known within the art. If there are not any faults
`logged, program control passes to third block 410.
`Otherwise, program control passes to fourth block 412.
`In third block 410, the controller 204 provides a no fault 10
`present message to the operator interface 206. Preferably,
`the operator interface displays the diagnostic fault parameter
`descriptive message indicating that there is no fault present.
`From third block 410, program control passes to second
`block 404.
`Referring back to fourth block 412, program control reads
`the component identification number (CID) and associated
`descriptive message of the diagnostic fault to be provided to
`the operator. CID numbers and associated descriptive mes(cid:173)
`sages representative of the diagnostic faults representative of
`possible diagnostic fault parameters are provided in the left
`and right columns, respectively, of Table B above. CID
`numbers and associated descriptive messages provided in
`Table B above are merely given to represent the nature of the
`information to be provided. However, those skilled in the art 25
`could readily and easily identify other messages to be
`provided to the operator. From fourth block 412, program
`control passes to fifth block 414.
`In fifth block 414, program control reads the failure mode
`indicating (FMI) number and associated descriptive mes(cid:173)
`sage from memory 202 to be provided to the operator
`interface 206. Several FMI numbers and associated descrip(cid:173)
`tive messages representative of the nature of the information
`to be provided to the operator are shown in the left and right 35
`columns, respectively, of Table A above. These FMI num(cid:173)
`bers and associated descriptive messages are provided as an
`example only. Those skilled in the art could readily and
`easily identify other information to be provided to the
`operator. From fifth block 414, program control passes to 40
`sixth block 416.
`In sixth block 416, the controller 204 provides the
`descriptive message to the user interface 206. The user
`interface 206 receives the diagnostic fault parameter
`descriptive message from the controller 204 and provides
`the information to the operator. Preferably, the operator
`interface 206 provides the CID number diagnostic fault
`parameter descriptive message in a scrolling text message in
`the first eight character display 301 and the FMI number
`diagnostic fault parameter descriptive message in a scrolling
`text message across the second eight character display 302.
`From sixth block 416, program control passes to fourth
`decision block 418.
`In fourth decision block 418, a controller 204 determines
`whether the operator requested another logged fault.
`Preferably, the operator may request another logged fault by
`actuating one of the operator input switches 304. However,
`those skilled in the art could readily and easily identify other
`ways for the operator to request another logged fault and
`methods of determining this request. These should be under- 60
`stood to fall within the scope of the present invention as
`defined by the appended claims. If the operator did request
`another logged fault, program control passes to ninth block
`419. Otherwise, program control passes to fifth decision
`block 420. In ninth block 419, the controller 204 selects the 65
`next fault. From ninth block 419, program control returns to
`third decision block 412.
`
`6
`Referring back to fifth decision block 420, the controller
`204 determines whether the operator deleted the fault.
`Preferably, the operator may use operator input switches 304
`to delete a fault stored in memory 202. If the operator did
`5 delete the fault, program control passes to seventh block
`422. Otherwise, program control passes to sixth decision
`block 424.
`In sixth decision block 424, the controller 204 determines
`whether the operator chose to exit service mode or,
`alternatively, diagnostic messaging mode. If the operator did
`not exit, then program control returns to fourth decision
`block 418. Otherwise, program control passes to eighth
`block 426.
`In eighth block 426, the controller 204 provides a com-
`15 mand to the operator interface 206 to discontinue displaying
`diagnostic fault information. From eighth block 426, pro(cid:173)
`gram control passes to second block 404.
`Referring back to seventh block 422, program control
`selects the next diagnostic fault from memory 202. From
`seventh block 422, program control passes back to third
`decision block 408.
`In second block 404, program control returns to the main
`program. The logic of FIG. 4 is performed every control
`loop in order to provide the diagnostic fault information to
`the operator in a timely manner. However, those skilled in
`the art know that the aspects of the work machine control
`system could be determined at other frequencies depending
`on other factors without deviating from the invention as
`30 defined by the appended claims.
`While aspects of the present invention have been particu(cid:173)
`larly shown and described with reference to the preferred
`embodiment above, it will be understood by those skilled in
`the art that various additional embodiments may be contem(cid:173)
`plated without departing from the spirit and scope of the
`present invention. For example, instead of or in conjunction
`with providing a scrolling text message to the operator, an
`audible message could be provided to the operator. Further,
`numerical or code messages could be provided on one
`display and a descriptive message could scroll across a
`second display. However, a device or method incorporating
`any such additional embodiment should be understood to
`fall within the scope of the present invention as determined
`based upon the claims below and any equivalents thereof.
`45 Industrial Applicability
`Motor graders 102 having a blade 106 are often used to
`cut a grade and/or a slope across the earth. To accomplish
`this, often electronic control is used to assist the operator
`with controlling the blade 106 to provide the desired slope
`50 and/or grade. The electronic controls typically are associated
`with several sensors, solenoids, circuits, and related mecha(cid:173)
`nisms. If one of these fail, it is advantageous for the operator
`to receive the diagnostic fault information in a manner that
`is easily and readily understood by almost anyone familiar
`55 with work machines, including new operators or operators
`possessing a relatively low level of skill or familiarity with
`the work machine.
`The apparatus and method of certain embodiments of the
`present invention, when compared with other methods and
`apparatus, may have the advantages of providing at least one
`diagnostic fault parameter descriptive message to the opera-
`tor; eliminating the need for an operator to refer to a cross
`reference chart or other documentation to understand the
`diagnostic fault parameter; reducing the skill and knowledge
`required for an operator of the work machine; and being
`more economical to use. Such advantages are particularly
`worthy of incorporating into the design, manufacture, and
`
`Page 8 of 9
`
`

`

`US 6,212,483 Bl
`
`7
`operation of work machines. In addition, the present inven(cid:173)
`tion may provide other advantages that have not been
`discovered yet.
`It should be understood that while the preferred embodi(cid:173)
`ment is described in connection with motor graders 102 5
`having a blade 106, the present invention is readily adapt(cid:173)
`able to provide diagnostic fault parameters to the operator on
`other work machines.
`Other aspects, objects, and advantages of the present
`invention can be obtained from a study of the drawings, the 10
`disclosure, and the appended claims.
`What is claimed is:
`1. A work machine adapted to be controlled by an
`operator, comprising:
`a frame;
`a plurality of ground engaging devices supporting the
`frame;
`an operator compartment supported by the ground engag(cid:173)
`ing devices;
`an engine operably coupled to the ground engaging
`devices; and
`a work machine control system having a diagnostic dis(cid:173)
`play system, including:
`a memory adapted to store at least one diagnostic fault 25
`parameter descriptive message;
`a controller associated with the memory and adapted to
`receive the at least one diagnostic fault parameter
`descriptive message, determine whether the work
`machine control system is in diagnostic messaging 30
`mode, and responsively provide the at least one
`diagnostic fault parameter descriptive message; and
`an operator interface adapted to receive the at least one
`diagnostic fault parameter descriptive message and
`provide the at least one diagnostic fault parameter 35
`descriptive message to the operator in the operator
`compartment, said operator interface including a first
`display and a second display, said descriptive mes(cid:173)
`sage being displayed as a scrolling text message on
`one of said first and second displays.
`2. The work machine of claim 1, wherein the operator
`interface is adapted to provide the descriptive message to the
`operator in the operator compartment as a scrolling text
`message.
`
`40
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`8
`3. A method of providing diagnostic information to an
`operator of a work machine, the work machine including a
`first and second display, comprising the steps of:
`determining whether the work machine control system is
`in diagnostic messaging mode;
`reading at least one diagnostic fault parameter descriptive
`message from a memory; and
`providing the at least one diagnostic fault parameter
`descriptive message to the operator, wherein said mes(cid:173)
`sage is displayed as a scrolling text message on one of
`the first and second displays.
`4. The method of claim 3, wherein the step of providing
`the at least one diagnostic fault parameter descriptive mes-
`15 sage to the operator includes providing an audible message
`to the operator from a user interface.
`5. The method of claim 3, including the step of providing
`at least one additional diagnostic fault parameter descriptive
`message to the operator in response to an operator input, said
`20 additional message being displayed on the other of said first
`and second displays.
`6. A method of providing diagnostic information to an
`operator of a work machine, the work machine including a
`first display and a second display, comprising the steps of:
`determining whether the work machine control system is
`in service mode;
`determining whether diagnostic text is selected;
`determining whether the work machine control system is
`in diagnostic messaging mode in response to the steps
`of determining whether the work machine control sys(cid:173)
`tem is in service mode and determining whether diag-
`nostic text is selected;
`determining whether there are any diagnostic fault param(cid:173)
`eters stored in memory;
`reading at least one diagnostic fault parameter descriptive
`message from a memory; and
`providing the at least one diagnostic fault parameter
`descriptive message to the operator in a scrolling text
`message on one of the first display and second
`display of the user interface while the work machine
`control system is in diagnostic messaging mode.
`
`* * * * *
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