DP1200 Manual - Newall Electronics Inc.
Contents
1. AE Sa i 3 Derry le NON E 4 Encoder ction E Angu El gt Quick Navigation of Axis 4 Setup Digital Rotary Linear The quick navigation feature for the setup of axis 4 digital rotary linear is detailed below where navi gation to the main axis setup menu is completed Numeric Key etup Function Legend Setup a Mode a 8 Direction Resolution Setup A Display Resolution Setup Axis 4 Setup po Zero Approach Setup po Back to Previous Options _ Setting Up The Setup Menu Navigation continued Navigating General Setup gt 6 Fran a 7 More gt Beep gt Of Quick Navigation of General Setup The quick navigation feature for general setup is detailed below where setup menu is completed Numeric Key General Setup ep uage het Ka pD ra i _ Numeric Key ay O gt ME See O 9 aioe te 20 f 40 2 3 60 5 100 gt gt navigation to the main axis Press Key 9 for the options below setting Up Setup Axis 1 2 3 8 4 Analogue Legend Setup The legend of the axis can be set to any of the options in the table below Navigate to Axis 1 Setup Legend Use the key list to select the desired character 7 To select Spherosyn 2G as the encoder type om To select Microsyn 2G 10um as the encoder type 7 To select Microsyn 2G 5um as the encoder type Note The encoder type must match the act2. NEWALL DP1200 Digital Readout User Manual Contents Setup Axis 4 Digital Rotary Angular continued A e Page 3 Electrical Page 3 Angular Display Setup Page 21 Physical Page 3 Angle Mode Setup Page 21 Environment Page 3 Direction Setup Page 21 Accreditation Page 3 Signal Checking Setup Page 21 Disposal Page 3 Zero Approach Setup Page 21 Input and Resolution Page 3 Setup Axis 4 Digital Rotary Linear Page 22 Mounting Options Page 4 Legend Setup Page 22 Mill Mount Page 4 Encoder Setup Page 22 Lathe Mount Page 4 Reference Source Setup Page 22 Adjustable Mount Page 4 Encoder Resolution Setup Page 22 Panel Mount Page 4 Display Resolution Setup Page 23 Direction Setup Page 23 Connection Details Page 5 Radius Diameter Measure Setup Page 23 Important Information Page 5 Signal Checking Setup Page 23 Connections Page 5 Zero Approach Setup Page 23 Error Compensation Setup Page 23 Display and Keypad Page 6 Understanding the Display Page 6 General Setup Page 24 Understanding the Keypad Page 6 Language Setup Page 24 Invalid Key Warning Page 6 Application Setup Page 24 Plane Setup Page 24 Setting up the enit eee ragen Axis Coupling Setup Page 24 Setup Menu Navigation Page 7 Functions Setup Page 25 Navigating Axes 1 2 3 4 Analogue Setup Page 7 Probe Diameter Setup Page 25 Quick Navigation Axes 1 2 3 4 Analo
3. Encoder Setup Page 18 Reference Source Setup Page 18 Lathe Functions sisson Page 44 Encoder Resolution Setup Page 18 Tool Offsets Page 44 45 Display Resolution Setup Page 18 Vector Page 46 Direction Setup Page 19 Taper Angle Page 47 Radius Diameter Measure Setup Page 19 Axis Summing Page 48 Signal Checking Setup Page 19 Zero Approach Setup Page 19 Troubleshooting Guide Page 49 E Error Compensation Setup Page 19 Setup Axis 4 Digital Rotary Angular Page 20 MA Legend Setup Page 20 Encoder Setup Page 20 Reference Source Setup Page 20 Encoder Resolution Setup Page 20 Specification g Electrical 3 EU Directive 73 23 EEC Low Voltage Directive BS EN 55022 1998 Class B BS EN 55024 1998 Input to Power Supply Unit Supplied 100 240V 47 63Hz External switch mode Output voltage 15VDC Input Voltage to DP1200 15 24VDC 10 Conforms to Low Voltage Directive Physical Height 215mm 8 Y Depth 68mm 2 Width 310mm 12 Weight 3 5kg 7 Yalb Environment B Climatic Range Storage Temperature 20 C 4 F to 70 C 158 F Working Temperature 10 C 14 F to 50 C 122 F Working Humidity 95 R H at 31 C 87 8 F IP Ingress Protection IP54 Panel Mount IP40 Stand Alone Accreditation C Disposal ss At the end of its life you should dispose of the DP1200 system in a safe manner applicable to electrical goods Do not burn The casework is suitable for recycling
4. JRA T O oone TOOOO FEE oe D Exit 99 700 PCD Setup Diameter gt 150 000 Enter the diameter dimension 7 y PCD Setup Holes Enter the number of holes required Y y PCD Setup Enter start angle required PUN PUN Start poe A Note The PCD will be calculated from the 3 o clock position counter clock E wise Enter the angle as a negative value if it is given as clockwise from 3 o clock eTo o E Enter end angle required y Y Ea eoo Note End angle must equal start angle for a full circle PCD routine Sy y Mill Functions PCD Bolt Hole Circle Continued Y Note At this point you can use the EJ D keys to navigate back and forth through the menus To start the PCD Bolt Hole Circle Routine Fig 1 Y axis ae i a A J 496 580 122 880 G Starting hole gt 18 y E starting e aes a e A 1__wangle Circle centre X j N 99 7mm Se l A l 7 OA 0 l Bana eel A e X axis 125 25mm Mill Functions Line Hole UN The DP1200 calculates positions for a series of equally spaced holes on a line Once the parameter data is entered the DP1200 displays the distance to the next hole The operator works to zero for each hole location See example Fig 2 Note This function only operates in the axes that have been setup in the plane See Page 24 Plane Setup Menu Tool Offsets Menu we O Line Hole o a To sel
5. X and Z axes with the angle of the compound Note Vector is only available on 3 and 4 axes units If the compound is set at an angle vector is very useful If the compound is aligned with the X or z axis the summing function should be used Menu Tool Offsets Lina Hole Arc Contouring a To select Vector Sub Datums Data Logging Setup de 2 3 4 5 6 7 8 9 Exit Info Back Enter the desired vector angle Vector Setup Example 30 000 PET F 3 0 7 To start TO Note Changing of the angle is always done through the Vector Setup Screen The angle cannot be changed while the vector function is running ae asa Vector 25 HUL ae Axis 1 shows combined X axis movement 30 000 Axis 2 shows combined Z axis movement 01 Axis 3 shows normal position display Combined X movement X Z Sin a x pa s_ vectoring Combined Z movement Z Z Cos a a angle Lathe Functions Taper Angle The Taper Function shows the angular displacement of the displayed position Axis 1 and 2 are used for this function The taper function ignores the parameter setting for the plane The example below demonstrates its operation DP1200 v0 4 0 Feed mm min Taper Angle Angle 0 30 00000 gt ho a EJ D until the display shows O 01 01 Touch the tool to one end of the taper and zero both axes then touch the tool at the other end of the taper
6. DRO displays the positions of all the axes with respect to a fixed datum The datum is set by entering an axis position when in Absolute Mode Example of Absolute and Incremental use Set absolute zero at lower Move to first position in left corner of the part ABS Hole A inc O DL 30 DLL Move to second position Switch to incremental in ABS Hole B mode and zero the display 2 T abs 0 ou inc inc E DA Li LILILI Make an incremental Switch to absolute mode move to Hole C 0 000 inc 54 DLL Inch and mm Press to toggle between Inch and mm mode Imperial Inch mode The DP1200 has a dedicated key to switch the mm has been selected positional displays between imperial inch and metric mm measurements The current display mode is indicated by a red LED either above or below the key as shown on the right i Li has Standard Func Zero and Preset an Axis Press to toggle between Set and Zero Mode The DP1200 has a dedicated key to switch the operation of the Fe OMONE AEE axis selection key between Zero Mode and Set Mode The selected selected mode is indicated by an LED either above or below the key as shown on the right Set mode has been selected Using Set Mode C a m With Set Mode selected this enables the select axis keys to Press the axis select key relevant to the axis prompt a numeric entry into the desired axis Once the cor rect value has been
7. be sent to a computer Applications Quality Control Save dimensional data from finished parts Test and measurement Length gauges PC q With Supporting Serial to USB Software Adaptor 0 5m Part 307 82340 DRO Interface Cable 3 5m D Part 307 82315 RS232 Setup Menu Tool Offsets Vector PCD Line Hole Are Contouring Skew Sub Datums roe To select Data Logging Data Logging Setup Exit Info Standard Fui RS232 Setup Continued Data Logging Output ae 7 To turn Data Logging off 2 Enter Key 3 Periodic PON To use Enter Key to trigger Data Logging y To select Data Logging periodically If off is selected Y A to return to the main menu and disable Data Logging If Enter Key or Periodic are selected 27 O Data Logging lt Baud Rate gt Select the Baud Rate to match the 1 9600 baud rate supported at the PC 2 14400 3 19200 4 38400 5 57600 6 115200 Data Logging Parity AE To select None disable Parity 1 None 2 Even 3 Odd my To select Even Parity 7 To selects Odd Parity y O Note Period will only be shown if the Periodic output was selected Data Logging Period Enter using the numeric keypad the number of seconds between each A 7 ent communication Ce D Menu Tool Offsets Vector PCD Line Hole Arc Contouring Skew Sub Datums Data Logging Setup O oND od aN Exit Info The RS232 is now
8. live and functioning Standard F un RS232 Output Data Format The output data from the RS232 is as follows The current axis data for the axes available on the system is transmitted For two axes systems only two axes of data will be transmitted The data packet structure of 12 characters is defined as follows Line feed r l Axis ID 9 characters for position character Carriage Separator saturn character The Axis ID is the representation of the axis at the time of printing This will be shown by the legend set for the axis at that time Please see example below Example The example below shows an RS232 output from a 4 axes DP1200 with the legend set as X 1st axis Y 2nd axis Z 3rd axis and W 4th axis X 531 420 Y 497 615 Z 15 006 W 131 295 Mill Functions PCD Bolt Hole Circle E The DP1200 calculates positions for a series of equally spaced holes around the circumference of a circle Once the parameter data is entered the DP1200 displays the distance to the next hole The operator works to zero for each hole location See example Fig 1 Note This function only operates in the axes that have been setup in the plane See Page 24 Plane Setup Menu Tool Offsets Vector PCD o og To select PCD Bolt Hole Circle Sub Datums Data Logging Setup META we O o Mi ad heath ta Hs Exit Info Example PCD Set TO nw Y OOOODO TY CL ia
9. required to use 3 axes of Tool Offsets DP1200 Tool Offsets are all in reference to the datum Menu Tool Offsets Vector PCD Line Hole i ae To select Tool Offsets Sub Datums Data Logging Setup 1 2 3 4 E 6 7 8 9 Exit Info Tool Offsets 1 Teach Offsets gm Offsets me To select Teach Offsets 27 To select Program Offsets Teach Offsets Enter the tool dimensions one axis at a time In this example the X axis of Tool 1 is entered Teach Offsets Tool lt 4 po PUN of the required axis Select Axis Take a skim cut if X is selected Take a face cut if Z is selected 01 The axis window shows the size of the tool with respect to the datum Capture a Note The tool can now be moved away from the part Teach Offsets Tool Lathe Functior E Teach Offsets Continued Teach Offsets Tool Measure the part using an accurate 01 gauge and enter this value TOOOOO 7 ei Repeat this process for all tools required Note Use the EJ D keys to navigate through the tools Program Offsets Enter the tool dimensions one axis at a time Program Offsets l 0 7 of the required axis Enter the position value using the numeric keys y em Repeat this process for all tools required Exit Note Use the EJ D keys to navigate through the tools Once complete Lathe Functions Vector Vectoring combines the movement of the
10. selected it can be set into the axis by L pressing ent This can be seen in the example on a DO the DE numeric value right FOOGOOG 2 F Zeroing an Axis in Set Mode Pa With Set Mode selected it is possible to zero the axis conve a niently by double pressing the relevant select axis key This zE can make use of the DP1200 Zeroing and Set Modes quicker and easier This is shown in the example on the right 0 900 Using Zero Mode With Zero Mode selected this enables the select axis keys to D zero each axis independently This can be seen in the Press the axis select key relevant to the axis example on the right O 000 Undo Function The DP1200 stores the last 10 positions numeric inputs which can be accessed using the undo feature Example 1 non movement Press S display now shows Example 2 movement Input a value Input a value 1 ODO move to that point display now shows O 000 Press once display now shows 70000 this is the position of your second point Press again display now shows Standard Fi Half Function Centre Find i u oo y Y The DP1200 has a dedicated key to halve the value of any axis This is done by initiating the half mode and selecting 100 000 Dy the required axis This can be seen in the example on the right Press key to initiate the half function Press the axis select key relevant to the axis 50 U00 Digifind Reference
11. Function The DP1200 comes equipped with Digifind a feature unique to Newall Digital Readouts Digifind eliminates the risk of losing your position and datum setup Digifinds precise setup of a workpiece is carried out only one time When the unit is powered on it displays the position at power off compensated for any movement of a Spherosyn Encoder up to 0 2500 6mm and a Microsyn Encoder up to 0 1000 2 5mm in either direction since the unit was last used If the machine has moved beyond 0 2500 6mm for Spherosyn or 0 1000 2 5mm for Microsyn Digifind allows a quick means to find the datum if lost Follow the steps below Make a mark on both a stationary part and moving part of the machine The marks must be aligned and will serve as the machine home position The mark must be indelible and must allow the operator to move the machine to within a 0 2500 6 mm for Spherosyn or 0 1000 2 5mm for Microsyn around the mark at any time Alternatively you can use a convenient reference point on the workpiece Setting the reference Set Reference Digifind 1 Find Zero 2 Find Reference 3 Set Reference For the axi y aaa The reference point is now set PUN 7 Select Axis Finding the reference If datum is lost at anytime it is possible to Find the datum again Position the machine within a 6mm 0 2500 band for Spherosyn or a 2 5mm 0 1000 band for Microsyn Digifind 2 Find Reference 3 Set Refere
12. Linear The quick navigation feature for the setup of axis 4 digital linear is detailed below where navigation SA a coder Resolution Axis 4 Setup ne Axis 4 Setup d Re ar to the main axis setup menu is completed 4s etup ete Oo T Axis 4 Setup 4 Signal Checking 2 off Axis N y d Axis 4 Setup Error Compensation 2 Linear Error Press Key 9 for the options below OA po setting Up The Uni Setup Menu Navigation continued Navigating Axis 4 Setup Digital Rotary ana Axis 4 ad Axis 4 Setup ee E o MA AN LE 4 Encoder Resolu r earh 2 Off 5 Ang a is y a f Axis 4 sahha Ae 4 oe sik 4 Setup Axis 4 Setup lS y Compensation gt Axis 4 ae Axis 4 sede Quick Navigation of Axis 4 Setup Digital Rotar jular The quick navigation feature for the setup of axis 4 digital airy anaular is detailed below where navigation to the main axis setup menu is completed Axis 4 Se la 3 Reference Source Setup 5 Angular Mode Setup po rection Setup po More Options po Back to Previous Options i O B BA he i E E m THE Setting Up The Ui Setup Menu Navigation continued Navigating Axis 4 Setup Digital Rotary Linear Axis 4 Setup lt Signal Checking A TO Axis 4 Setup isplay Resolution je 0 005 Axis 4 Setup Setup Axis 4 Setup 5 PT MS SF
13. Please consult local regulations on disposal of electrical equipment Input amp Resolutions Encoder inputs 1 2 amp 3 can be used with Spherosyn 2G and Microsyn 2G analogue encoders Encoder input 4 can be used with Spherosyn 2G Microsyn 2G or 5v TTL Quadrature depending on the model ordered Note It is possible to upgrade the DP1200 from a 2 or 3 Axis up to 4 Axes See Page 26 Unlock Axis Display Resolution Options Spherosyn 2G or Microsyn 2G 10um Microsyn 2G 5um 5um 0 0002 1um 0 00005 10um 0 0005 2um 0 0001 20um 0 001 5um 0 0002 50um 0 002 10um 0 0005 Newall Measurement Systems Limited reserves the right to make changes to this specification without notice Mountin g O pi This section details the various mounting options for the DP1200 both the standard version and the panel mount version Mill Mount Non Adjustable Adjustable Mount Options Panel Mount Option pa 297 0 DFP 1200 DRO PAE T Meal kaso eren dera Limit Lecsnis Cutout 205 00 Fixing Ctrs qe R5 Min R15 Max 4 50 0 4off gt 300 00 Fixing Ctrs __ Panel cut out Connection E This chapter details the cable connections for the DP1200 Important Information Encoder inputs 1 2 amp 3 can be used with Spherosyn 2G and Microsyn 2G analogue encoders Encoder input 4 can b
14. RO and displayed TD 0 00695894 ae Y Exit Accept Back Setting Up Display Resolution Setup Please refer to Page 15 Display Resolution Setup Direction Setup Please refer to Page 10 Direction Setup Radius Diameter Measure Set Please refer to Page 10 Radius Diameter Measure Setup Signal Checking Setup Please refer to Page 16 Signal Checking Setup Zero Approach Setup Please refer to Page 11 Zero Approach Setup Error Compensation Setup Please refer to Page 11 Error Compensation Explanation Page 12 Type of Machine Error Page 12 Linear Error Compensation Explanation Page 13 Linear Compensation Setup Settin Q U General Setup Language Setup General Setup Language 4 English British Choose the required language the unit is to display If English US A eae the language required is not in the 1st menu press 7 5 Espa ol to display more languages 6 Francais ri More Exit Application Setup General Setup lt Application 7 To select Mill 1 Mill 2 Lathe 3 Generic 7 To select Lathe roe To select Generic Note When set to Lathe Axis 1 top changes to diameter measurement Note When set to Lathe or Mill some functions are automatically turned off Plane Setup This setting defines the machining face of the work piece for example on a turret mill it would typically be the X Axis and the Y Axis This setting is used by the mill function
15. The message window will now display the taper angle as shown below Taper Angle Angle 11 30993 Tool Lathe Functions Axis Summing Y The Summing Function allows the sum of the two selected axes to be displayed Axis 4 is not used with this function See Axis Coupling Setup Page 24 for details on using Axis 4 DP1200 v0 4 0 Axis Summing 0 000 gt Feed mm min X Z 0 4 a Y 0 until the display shows 01 01 1 Select the required plane Ete X Z we O 7 0 The un summed position data will be shown in the axis window The summed position will be shown in the LCD display paid MIL CE d 01 J dr e L H So Combined Movement Combined Movement 7 X Z Z Z Troubleshootir The DP1200 has a dedicated information screen which provides useful information when contacting Newall or troubleshooting the unit This is especially useful when a panel mount unit is in use Menu Info Tool Offsets Serial Number JA0001AN Vector Model Number DP120021100S10 PCD Axis Config 4 Analogue Line Hole Type Generic Are Contouring Defaults Newall Skew Sub Datums Firmware 1 0 2 Data Logging FPGA 0 0 1 Setup i DSU None Oonmone wh Exit Info Exit Symptom SOS 63 Solution e The DP1200 maybe in sleep mode Press any key to exit sleep mode e Check that the power supply is correctly connected to a working mains outlet The display is blank e Check that the power s
16. actors e If using the Segmented Error Compensation verify the datum position e Swap the encoder to another axis to confirm whether the encoder or the DP1200 is at fault e Check that there is no damage to the encoder or its cable e Check that the encoder is fixed firmly and aligned correctly as described in the Spherosyn Microsyn Installation manual e Check that there is no binding on the scale With the scale brackets slightly loosened you should be able to slide the scale back and forth with minimal resistance e If you have a Spherosyn scale check that the scale is not bent by removing it and rolling it on a flat surface Readings are incorrect If the solutions suggested above do not solve your problem contact Newall s Technical Support Department for further instruction Swapping encoders to trace a fault 1 Check that the two axes are set to the correct encoder types 2 Disconnect the DP1200 power supply 3 Disconnect the encoder from the malfunctioning axis and move to a working axis 4 Reconnect the DP1200 power supply and turn on If the fault stays with the same encoder then the encoder is at fault If the fault does not follow with the encoder the DP1200 is at fault Providing you have not moved the machine more than 6 3mm 0 25 for a Spherosyn Encoder or 2 5mm 0 1 for a Microsyn Encoder switching the power off and back on again does not lose the datum position Newall Measurement System
17. al keys The displayed resolution can only be the same or higher than the encoder resolution Example Linear Encoder has a resolution of 1um 0 001 and is to be displayed at 5um 0 005 Navigate to Axis 4 Setup Display Resolution ie 0 005 7 06 0 E Note Inch mm function must be set to reflect entered resolution Setting Uf Direction Setup Please refer to Page 10 Direction Setup Radius Diameter Measure Setup Please refer to Page 10 Radius Diameter Measure Setup Signal Checking Setup The DP1200 has the facility to detect if the encoder attached to the 4th digital axis has become disconnected sustained severe cable damage or with some encoders experienced electronic failure Mode of Operation The detection mechanism monitors the incoming signals from the encoder to look for an illegal combination of input levels If the encoder becomes disconnected then the illegal A B RM Status input combination is generated internally within the SIG FAIL DP1200 The display will then show SIG FAIL If it is possible to correct the fault press the axis zero key to CL H X ok reset that display If the SIG FAIL message continues L X OK to be displayed then the fault has not been corrected X any state i e can be either high H or low L Note Please check the encoder specification for information on the synchronisation of the index marker pulse If the encoder is capable of gen
18. atums Teach Mode and Program Mode See examples below How to navigate to the Sub Datum Function Menu Sub Datums Tool Offsets 1 Use Datums 2 Teach Datums 3 Program Datums Line Hole Are Contouring y Use SDM s a y Teach SDM s Data Logging rog Program SDM s Exit Info Back Ue 2 de 4 E 6 7 8 9 How to use Sub Datum Teach Mode Select Teach Datums to reach the screen below Teach Datums Datum 10104 L Move machine Repeat until all sub datums to the first sub have been entered datum location y Exit Acquire Back Exit to return to the Sub Datums Menu or to return to normal operation J Back y O ae How to use Sub Datum Program Mode Select Program Datums to reach the screen below Program Datums Datum lt 001 gt Bu aes al PUN Repeat for each axis 25 gt to move to next sub datum Exit to return to the Sub Datums Menu or to return to normal operation J Back y O we Standard Fu n Sub Datums Memory Continued How to use Sub Datums Select Use Datums to reach the screen below Sub Datums Sub Datums Datum Datum gt gt fen lt Y The DRO will display the distance needed to O 001 op 001 move to the sub datum point The sub datum Ny NZ point destination is O for each respective axis Exit a EJ D to scroll through sub datums or use the numeric keypad to input the sub datum required F A to return to the Sub Datums Menu o
19. ction 1 Enter a value using the numeric 0 000 keypad for the correction value I E 0 010 Back A i j i a Note The correction value is limited to a minimum of 0 005mm 0 0002 ay EJ D to navigate between points A maximum of 200 points are available 7 to accept the compensation at the point reached Setting Ur Setup Axis 4 Digital Linear For models with 5v TTL quadrature 4th axis Legend Setup l Please refer to Page 10 Legend Setup Encoder Setup Axis 4 Setup Encoder 1 Linear 2 Rotary Angular 3 Rotary Linear a To select Linear as the encoder type Reference Source Setup The DP1200 is capable of using an internal reference or an external reference source for the digital 4th axis An internal reference is the reference mark provided by the encoder Axis 4 Setup A Reference Source ie i internal og To select Internal referencing 2 External PUN To select External referencing Encoder Resolution Enter the resolution of the encoder for the 4th digital axis using the numerical keys It is important the resolution of the encoder is entered exactly or inaccurate measurements will occur Example Linear encoder has a resolution of 0 001mm Navigate to Axis 4 Setup Encoder Resolution ler 0 0001 FOOOOM Note Inch mm function must be set to reflect entered resolution Display Resolution Enter the resolution that is required to be displayed using the numeric
20. des the best results if a dial indicator must be used be sure it is the highest available accuracy Instructions Check the accuracy of the DRO system 1 Place the target of the laser or the needle of the dial indicator directly on the Newall reader head It is absolutely critical to take the readings directly from the Newall reader head If a dial indicator must be used be sure that the needle of the indicator is perpendicular to the reader head and not angled If readings are taken anywhere else on the machine machine errors may distort the results 2 When the reader head moves the movement registers on the laser indicator and the DRO display 3 Set the laser dial indicator and DRO position displays to 0 4 Make a series of movements and compare the position readings between the laser dial indicator and the DRO display If the readings match within the accuracy specified then the DRO system is operating properly If this is the case proceed to the next step Evaluate machine errors If the readings do not match contact your local Newall Service Representative before proceeding with error compensation Evaluate machine errors 1 Put the laser target dial indicator on the part of the machine where the machining is performed 2 Make a series of movements and compare the position readings between the laser dial indicator and the DRO display The difference between the laser dial indicator reading and the reading on t
21. e parameters Arc Setup Enter coordinates for the center of the arc Centre gt N sone 7 FGD y TOD Arc Setup Enter the radius dimension Radius gt DN 7 00 Exit G Back Arc Setup ms Enter coordinates for starting point of arc start b 0 000 100 000 7 AOD z 7 7 Mill Functions Arc Contouring Continued Arc Setup Enter coordinates for ending point of arc End 100 000 0 000 y O TN JO TD Arc Setup Enter the tool diameter to be used Tool Dia 10 000 7 OOO TC Arc Setup gt Select the appropriate arc type For this example we will select internal 1 Internal 2 External 7 O Arc Setup Enter the maximum cut required 7 O00060 FO 1 000 To start the arc feature Ee we A Navigate through the sequence of points using the EJ D keys Arc Contouring i E Lo _ Hole Y axis Starting Point f Cut Om CRIL se AOAN ee atl BORM 4 826 1 0 5 Tool i i Ending Diameter TPL N Point OON Y y TE A AA pe E 3 4 174 a 2 SE Ee ee eee Radius Ye22 1 nterna e 2 386 TT Arc Cut Arc Contouring Centre Hole 0 VS AS y Datum 4 X axis 2 25 3 35 5 30 Mill Functions Polar Co ordinates UN The Polar Coordinate function enables the operator to convert the displayed data from the convention al Cartesian Coordinates X 8 Y to polar coordinates radius length an
22. e used with Spherosyn 2G Microsyn 2G or 5v TTL Quadrature depending on the model ordered Please ensure that Fi All cables are secured to prevent the connectors from dropping into hazardous positions for example the floor or coolant tray when unplugged Fi All cables are routed to prevent them from being caught on moving parts Fi Before the machine power is turned on the DP1200 is grounded to the machine using the braided grounding lead provided Td The power has been disconnected before you connect the encoder s A DO NOT CONNECT THIS UNIT DIRECTLY TO THE MAINS SUPPLY If the Newall encoder has a round 7 pin connector an adaptor cable part no 307 80980 is required Contact your local Newall supplier for details Connections Encoder input connection 1 2 3 or 4 according to model Probe connection p f H gt k y i i hi p 5 A RS232 output Cable clamp Cabinet equipotential terminal External reference connection External PSU input for grounding to machine Display and Keypad This section explains how to interpret the display and use the keypad Understanding The Display DP1200 v1 0 0 Message Display LCD Axis 1 iat lt Axis 2 Axis 3 Axis 4 in abs zero mm ine set Power LED Understanding The Keypad Axis Selection Key ref Digifind Reference Switches between Zero and eet Axis Preset modes Numeric Keys abs Switches between Absolute Inc and Incr
23. ect Line Hole Sub Datums Data Logging Setup Exit Info Example Line Hole Setup TO naa FOOOO F stat sop 200 000 TS cconinate F F e Line Hole Setup Enter the line hole length dimension ma A E y Note Length total length of line hole sequence not distance between adjacent holes Line Hole Setup Holes Enter the number of holes required 27 y Line Hole Setup Angle gt Enter angle required in degrees p F 20 000 Note At this point you can use the EJ D keys to navigate back and forth through the menus Mill Functions Line Hole Continued To start the line hole circle routine Line Hole Line Hole Hole Hole lt 200mm X axis Mill Functions Arc Contouring The DP1200 calculates positions for rough machining of an arc or radius The message display prompts the user for parameters needed to complete the calculations Once parameters are entered the DP1200 shows the co ordinates which are point to point positions along the arc The operator works to zero for each hole location See example below The arc feature is dependant on the Plane setting for the axes it will operate in See Page 24 Plane Setup Menu Tool Offsets Vector PCD Line Hole n Are Contouring 27 To select Arc Contouring Sub Datums Data Logging Setup Le 2 3 4 I 6 Z 8 9 y O Exit Info Back Note Use the EJ D keys to navigate through th
24. emental modes i Switches between Inch and mm display 35 Soft Keys left middle amp right Clear Numeric Entry Enter Key a Y Centre Find D Navigation Keys Undo Key Sleep Key Invalid Key Warning The DP1200 is equipped with a visual and audible indication to warn the user when an invalid key has been pressed If an invalid key has been pressed all the displays will flash on and off twice along with a double beep tone No operation will change until a correct key for that operation has been pressed Setting Up The Unit Setup Menu Navigation How to enter setup sts ee ee vat tn tn th A ES S E Nie od vas A gt gt Quick Navigation of Axes 1 2 3 amp 4 Analogue ip The DP1200 supports a quick navigation feature using the LCD screen and numeric keys enabling the user to navigate to specific areas without scrolling through each and every menu This is particularly useful when navigating to one specific item Below are the quick navigation keys for the setup of Axes 1 2 3 or 4 dependant on model where navigation to the main axis setup menu is completed Axis 1 Setup Dd a E a Ugi Zero Approach Setup Error Compensation Setup A ee 2 Radius Diameter Setup re A Setting Up The Uni Setup Menu Navigation continued Navigating Axis 4 Setup Digital Linear TO Quick Navigation of Axis 4 Setup Digital
25. erating the illegal condition A low B low and RM high then signal checking function should be TURNED OFF Axis 4 Setup Signal Checking 1 On re To enable Signal Checking 7 2 To disable Signal Checking Zero Approach Setup 3 Please refer to Page 11 Zero Approach Setup Error Compensation Setup Please refer to Page 11 Error Compensation Explanation Page 12 Type of Machine Error Page 12 Linear Error Compensation Explanation Page 13 Linear Compensation Setup Settin g U 0 Setup Axis 4 Digital Rotary Angular For models with 5v TTL quadrature 4th axis The rotary angular option is for customers using a rotary encoder who want an angular displayed measurement Legend Setup Please refer to Page 10 Legend Setup Encoder Setup Axis 4 Setup Encoder 1 Linear 2 Rotary Angular 3 Rotary Linear a To select Rotary Angular as the encoder type Reference Source Setup Please refer to Page 16 Reference Source Setup Encoder Resolution Setup 20 Axis 4 Setup Encoder Resolution ie OS Resolution a To select Program Resolution 27 To select Teach Resolution Program Resolution Setup This setting allows the user to program the DP 1200 with a rotary encoder resolution Rotary encoder resolutions are usually expressed as Pulses Per Turn This is the number of pulses output per revolution Information on the PPT can be found in the encoder manufacturer s specification and i
26. g 1 Tool or Probe ft lq ____________ standard distance AA gt measured distance Setting Up The Uni Error Compensation Setup Navigate to Axis 1 Setu p PUN To select no Compensation None roe To select Linear Error Compensation 7 To select Segmented Error Compensation te ie 7 To select Teach mode a To select Program mode Teach Mode 3 Teach mode is an easier way of calculating linear errors using the DP1200 to automatically calculate the error by comparing the actual measurement and the physical movement Follow the steps below Linear Error Linear Error 7 OOO Exit Accept Back Enter the actual measurement using the numerical keypad Check Accept correction factor Program Mode First determine the correction factor required To do this use se the following equation In the example the standard distance is 500 000mm and the measured distance is 500 200mm Correction factor error actual x 1 000 000 Correction factor 500 500 200 500 000 x 1 000 000 Correction factor 400 TOO F Linear Error Exit Accept Back Setting Up The L Segmented Error Compensation The scale travel is broken down into as many as 200 aseraeied segments each with their own correction factor measured against a high accuracy standard The following parameters need to be identified S
27. gle The two axes used for polar coordinates are defined in the parameter setting for plane See Page 24 Plane Setup The fourth axis cannot be used for polar coordinates The example below demonstrates its operation Polar Co ordinates 0 00000 he DP1200 v0 4 0 Feed mm min 0 F 4 7 EJ D until the display shows M Radius 01 0 000 Menu Move from the starting point to the ending point Polar Co ordinates Angle 11 6 56505 Radius 22 361 Menu The message display will show the angle and the radius length Mill Functions Skew The Skew Feature provides capability for the DRO to find the skew angle of a part It is very useful for the machine operator to know if the part is square to the bed It can also be used to find other angles on the workpiece The plane setting parameter defines which axes are used for this feature Note Use the EJ D keys to navigate through the parameters Note that positions 1 and 2 are points on the first plane Angle 1 Positions 3 and 4 are points along the second plane Angle 2 lt lt Position 1 Position 2 Position 3 Menu al a TN Lit ad e TAE Exit Info o Tool Offsets Vector PCD Line Hole il my To select the Skew function Sub Datums Data Logging Setup Touch the probe to any position along the X first plane Or Touch the tool to any position along the first plane ar Touch
28. gue Setup Page 7 Beep Setup Page 25 Navigating Axis 4 Setup Digital Linear Page 8 LCD Brightness Setup Page 25 Quick Navigation of Axis 4 Setup Digital Linear Page 8 Sleep Setup Page 26 Navigating Axis 4 Setup Digital Rotary Angular Page 9 Uniseks Page 26 Quick Navigation of Axis 4 Setup Digital Rot Ang Page 9 Reset Setup Page 26 Navigating Axis 4 Setup Digital Rotary Linear Page 10 Quick Navigation of Axis 4 Setup Digital Rot Lin Page 10 Siandard Functions 2s Page 27 Nav iGaung Genera SEUR rage t Absolute Incremental Page 27 Quick Navigation of General Setup Page 11 ee Page 27 Setup Axis 1 2 3 amp 4 Analogue Page 12 EE T AA dea a ea Ds ie Half Function Centre Find Page 29 Display Resolution Setup Page 12 OR EGE rage A3 Direction Setup Page 12 Sub Datums Memory SDM Page 30 31 Radius Diameter Measure Setup Page 12 Sey Node hs adius Diame p g PER Jero Approach Seiu Page 13 RS232 Data Logging Data Acquisition Page 32 PP P g RS232 Connections Page 32 Error Compensation Page 13 RS232 Setup Page 32 33 Types of Machine Error Page 14 Linear Error Compensation Page 14 ROAGA CUBR Data Kamal Page Error Compensation Setup Page 15 Linear Error Compensation Setup Page 15 ea cua de O dd Se 136 Segmented Error Compensation Page 16 ine Hale 37 38 Segmented Error Compensation Setup Page 16 17 Arc Contouring Page 39 40 Setup Axis 4 Digital Linear Page 18 MI Polar Coordinates Page 41 Legend Setup Page 18 Skew Page 42 43
29. he DRO display is the machine error 3 Plot the machine error along the entire axis of travel to determine the nature of the error If it is a linear error you can use linear error compensation If the error is not linear you should use segmented error compensation S e tti n Q U Types of Machine Error There are many types of machine error including pitch roll yaw flatness straightness and Abb error The diagrams below demonstrate these errors Way errors Abb error Yaw Axis I C2 Typical Yaw NO hal 1 a Straightness B y 2__ AA er O el than Roll Axis i less than A encoder A2 oO Za A End Effector t gt Travel Pitch Axia EN gt Flatness aoe Pitch ae Deviation Shown with encoder on concave side Shown with encoder on convex side of of bearing path bearing path Linear Error Compensation In this mode a single constant correction factor is applied for each axis to all displayed measure ments The correction factor is calculated and specified in parts per million ppm In this mode a single constant correction factor for each axis is applied to all displayed measurements Error ES co Travel As you follow the procedure ensure that you approach each edge from opposite directions then subtract the width of the tool from the value displayed on the DP1200 The DP1200 Automatically takes into account the probe diameter as per setting Linear Only Fi
30. he user to enter a probe diameter to be used with the DP1200 The probe diameter information can be found in the probe specification Example The probe diameter is 5mm General Setup Probe Diameter 4 000 FUN Note Default value is 4mm Note Inch mm key must be set accordingly Beep Setup General Setup Eo 27 Beep On FUN Beep Off Note Default is Beep On LCD Brightness Setup The DP1200 allows the user to adjust the brightness of the LCD screen for user preference 7 To select 20 brightness General Setup OS 7 To select 40 brightness 60 a To select 60 brightness 7 To select 80 brightness To select 100 brightness y Note Default is 60 brightness Setting Up Sleep Setup Allows the user to select a time period where the unit will automatically go into Sleep Mode If no move ment is made or keys pressed for the time period set the sleep mode will be activated Example The sleep time is required after 5 minutes General Setup Sleep mins 7 Ca Note To deactivate this feature enter a value of 0 default Unlock Axis Allows the unit to be upgraded from a 2 or 3 Axis unit up to 4 Axes Please contact your local authorised Newall distributor to purchase this option General Setup Unlock Axis Contact Newall to progress further Reset Setup Allows the user to reset the unit back to factory defaults There are three factory default settings according to the app
31. lication Example The unit is being reset as a Lathe General Setup General Setup _ 7 To default as Mill d Reset 2 Lathe _ 7 To default as Lathe Lathe Sure 7 To default as Generic Note When the DP1200 is setup as a Lathe the X top Axis default setting is DIA therefore the xX top Axis will display double OEM Defaults The DP1200 may have OEM default settings specific to a machine In this case the DP1200 will only display one reset option This reset will default all the parameters to match the OEM defaults set for the machine when the DRO was originally installed Standard Func This Section details the standard functions of the DP1200 Absolute Incremental abs j Press to toggle between absolute and incremental mode brad oda tes im b lected The DP1200 has a dedicated key to switch the positional ical displays between absolute abs and incremental inc measurements The current display mode is indicated by a red apa Incremental inc mode has LED either above or below the key as shown on the right been selected Using Incremental Mode In Incremental Mode the DRO displays the position relative to the last position This is also known as point to point use In this mode you can set the value for each axis or zero it to create an Incremental Datum This does not effect the machine s Absolute Datum that you configure in Absolute Mode Using Absolute Mode In Absolute Mode the
32. nce Find Reference og Select Axis og aa The position to the absolute zero for that axis is now dis played TA Finding zero As a fail safe Digifind can Find the last datum or absolute zero set Position the machine within a 6mm 0 2500 band for Spherosyn or a 2 5mm 0 1000 band for Microsyn Find Zero my Select Axis Digifind 1 Find Zero 2 Find Reference 3 Set Reference TO T O requires The original datum is reset Standard Fu Sub Datums Memory The DP1200 can store up to 200 SDM Sub Datum positions or machining steps into the memory Using SDM allows the operator to work to zero by calling up stored dimensions instead of working up to drawing dimensions This eliminates the need to constantly refer to the drawing and reduces the possibility of scrapping parts due to misread dimensions It also speeds up positioning as the operator is working to zero The SDM s are stored as co ordinates relative to the absolute datum position If the absolute datum position changes the SDMs will shift to the new datum Once a repetitive sequence of co ordinates is entered into SDM the co ordinates can be recalled at any time The positions remain in memory until altered by the operator Simply assign any SDM num ber 1 200 to each machining step When machining call up each step SDM number and work to zero Sub Datums can be used for any or all axes There are two ways to store Sub D
33. or degrees minutes seconds A Zero Approach dependant on the Angular Display Setting 0 000 Note To disable the zero approach function enter a value of 0 000 Default is 0 000 Setting Up The Unit Setup Axis 4 Digital Rotary Linear For models with 5v TTL quadrature 4th axis The rotary linear option is for customers using a rotary encoder who want linear displayed measurement Legend Setup Please refer to Page 10 Legend Setup Encoder Setup Axis 4 Setup r e a ear Bo otary Angular otary Linear roe To select Rotary Linear as the encoder type Reference Source Setup Please refer to Page 16 Reference Source Setup Encoder Resolution Setup Axis 4 Setup ncoder Resolution p ole ae es m ach Resolution 7 To select Program Resolution 7 To select Teach Resolution Program Resolution Setup Axis 4 Setup a4 Encoder Resolution Re Enter the linear resolution via the numeric keypad Example 10mm linear movement required from 1 revolution of an 1800 pulse rotary encoder 10 4 0 0013888 1800 Teach Resolution Setup Axis 4 Setup Move the rotary Axis 4 Setup Move the rotary E oO encoder to a known 0 encoder to a known start point end point ASA Move To Start mw A Enter the linear Axis 4 Setup movement using the Encoder Resolution gt numerical keys l Y e FO The resolution is calculated by the D
34. r F A to return to normal operation Example of Sub Datums Y SDM1 SDM3 100 0 75 0 SDM2 m 50 0 50 0 X pa 100 0 Sleep Mode The DP1200 offers two different ways to put the DRO into sleep mode using the sleep key or auto matically after a set period of time See Page 24 Sleep Setup Entering Sleep Mode using the sleep key og to turn all displays off apart from the Power LED Any key presses or movement will not bring it out of this mode To return to normal operation 7 the unit will boot up to the start screen Once any key is pressed the DP 1200 will return to normal operation Entering Sleep Mode automatically Once setup See Page 24 Sleep Setup apply no movement or any key presses for the period of time set and the DP1200 will turn off all displays apart from the power LED Any key presses or move ment will bring it out of this mode Standard F un RS232 Data Logging Data Acquisitior The DP1200 can offer basic serial communication via a dedicated RS232 compatible port which is used for data logging purposes RS232 Connections The RS232 is connected to the DP1200 via a 15 pin D type connector at the rear of the display The required connection details are shown below Pin 3 RS232 TXD Pin 2 RS232 RXD Pin 5 RS232 GND Pin 1 O0OO0OO0OO0OOO OOOOOOO o Pin 15 The RS232 port allows position data from the DRO to
35. re approaching zero This is done by using the far left LED segment on each axis as the axis approaches zero each segment of the 0 lights up in quick succession Once zero has been reached the 0 to the far left will be constantly on Navigate to Enter any value using the numeric keys to provide zero approach Axis 1 Setup limits This can be entered in inches or millimeters by toggling the Zero Approach D key mm 0 000 Note To disable the zero approach function enter a value of 0 000 Default is 0 000 Error Compensation A digital readout DRO system helps to improve productivity It decreases the number of scrapped parts as the operator no longer has to be concerned about making mistakes related to counting the revolutions on the dials The DRO system also helps to eliminate some errors related to ballscrew backlash The DRO system will operate to its published accuracy provided all components are in working order and properly installed Field calibration is not necessary Accuracy problems with machined parts may be caused by machine error DRO system error or a combination of both The first step in determining the source of error is to check the DRO system This is completed by comparing the movement of the Newall reader head to the position reading shown on the display A high accuracy standard such as a laser interferometer is required A dial indicator can be used to check short distances but a laser provi
36. s This setting refers to the legend that has been set for Axes 1 2 amp 3 In the example Axis 1 has a legend of X Axis 2 has a legend of Y and Axis 3 has a legend of Z General Setup 4 Plane 7 To select X and Y axes 1 XY 2 XZ 3 YZ 7 To select X and Z axes 7 To select Y and Z axes Axis Coupling Setup This feature enables the permanent summing of Axis 4 with one of the other axes It is most commonly used for mills The axes selected in the plane setting parameter will not be summed Example The plane has been set to the X and Y Axes then the fourth axis is summed with Z 3rd Axis General Setup Axis Coupling S oft 7 To enable the Axis Coupling feature 7 To disable the Axis Coupling feature Note When this feature is active the 4th Axis display will be blank Setting Up Functions Setup l Allows the user to enable or disable Mill Lathe functions Functions in white text are enabled Functions in grey text are disabled Note Some functions may already be disabled if the DP1200 is set as a Mill or Lathe at application setup and dependant on the number of axes available Numeric Key Function 0 General Setup Functions Tool Offsets Vector Taper Angle Exit General Setup Functions Are Contouring Polar Co ordinates Skew 4 Data Logging Sub Datums Data Logging Sub Datums Back Exit Probe Diameter Setup Allows t
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38. s also generally marked on the encoder Navigate to Axis 4 Setup Example Encoder Resolution gt Rotary encoder has a Me 124 y PPT Counts per Revolution CPR 4 Teach Resolution Setup Axis 4 Setup Rotate rotary encoder until a value Axis 4 Setup is displayed in the LCD Encoder Resolution gt display Rotate Axis 1800 For this example an 1800 pulse encoder is connected Exit Accept Back Setting Ur Angular Display Setup Axis 4 Setup Angular Display 1 Decimal 27 To select Decimal Degrees 2 Degrees Minutes Seconds a To select Degrees Minutes Seconds Angular Mode Setup This function allows the selection of rollover at 360 back to zero or to provide a continuous measurement Axis 4 Setup Angular Mode 1 Rollover 7 To select Rollover Rollover at 360 7 To select Continuous Direction Setup Please refer to Page 10 Direction Setup Signal Checking Setup Please refer to Page 16 Signal Checking Setup Zero Approach Setup This setting provides a visual indication that one or more axes are approaching zero lt does this by using the far left LED segment on each axis as the axis approaches zero each segment of the 0 lights up in quick succession Once zero has been reached the 0 to the far left will be constantly on Navigate to Enter any value using the numeric keys to provide zero approach Axis 4 Setup limits This can be entered in degrees
39. tarting point zero Error Travel Reference point Correction points Each Correction Point is measured with respect to the Starting Point zero which is usually set close to one end of the scale The Reference Point can be set anywhere along the scale and does not need to coincide with either the absolute datum or any of the correction points However it may be convenient to make the absolute datum and the reference point the same Always approach the Starting Point Correction Points and Reference Point from the same direction If not the size of the tool or probe will render the measurement inaccurate Segmented Error Compensation Setup Segmented Error roe 1 To select Teach mode me To select Program mode Teach Mode d Segmented Error Segmented Error je To Reference Segmented Error Enter movement using the numeric 7 ent keypad Segmented Error Select Yes to move on to point 2 maximum 200 points Select No to accept the segmented compensation Continue Exit Accept Program Mode The program mode enables the user to define the correction points manually and then enter them into the DP1200 The position is where the correction point occurs and the correction point is the value to be corrected at that point Segmented Error Position 1 Enter a value using the numeric key anon 1 pad for the 1st correction point I E 5 000 0 000 gt correction 1 Corre
40. the probe to a second point along the X first plane Or Touch the tool to a second point along the first plane 7 Touch the probe to any position along the Y second plane Or Touch the tool to any position along the second plane 7 Mill Functions Skew Continued A Position 4 Skew Angle 1 180 00000 Angle 2 180 00000 Exit Again Back Touch the probe to a second point along the Y second plane Or Touch the tool to a second point along the second plane my The angle for X plane 1 and Y plane 2 are shown on the DRO A y Lathe Functions a E Tool Offsets The Tool Offset function allows the operator to enter and store offsets for a range of tools This enables the operator to change tools without resetting absolute zero or datum Using Tool Offsets ensures that diameter and length measurements will remain consistent after tool changes This speeds up tool changes and increases productivity as it eliminates the need for the operator to stop and manually measure the diameter The number of Tool Offsets available is 50 This large number allows tools to be grouped where more than one set is used For convenience it is highly recommended that tools are physically marked with their corresponding tool number There are two ways to set Tool Offsets Teach Mode and Program Mode The DP1200 provides capability for Tool Offsets for up to 3 axes A 3 or 4 axes DP1200 is
41. ual encoder in use or the DP1200 will not display correctly Encoder Setup Navigate to Axis 1 Setup Encoder 1 Spherosyn 2G 2 Microsyn 2G 10pm 3 Microsyn 2G 5pm Display Resolution Setup q Navigate to Spherosyn 2G Microsyn 2G 10um Microsyn 2G 5um 1 To select Sum 0 0002 AP 1 To select 1um 0 00005 y To select 10m 0 0005 ay To select 24m 0 0001 7 3 To select 20um 0 001 3 To select 5ym 0 0002 7 4 To select 50um 0 002 BP 4 To select 10um 0 0005 ae To select Positive 27 To select Negative 1 Positive Example 2 Negative Axis 1 Setup Display Resolution fe 0 005 Direction Setup Navigate to Axis 1 Setup Direction If the current setting is Positive and the measurement increases from right to left changing the setting to Negative will cause the measurement to decrease Radius Diameter Measure Setup Navigate to 7 To select Radius Radius Diameter gt 27 To select Diameter 1 Radius da The radius diameter function allows the operator to display actual radius or twice actual diameter measurements for each axis This function is generally used in turning applications such as the cross travel on a lathe displaying the diameter reading rather than the radius is the desired result Axis 1 Setup Setti ng U Zero Approach Setup This setting provides a visual indication that one or more axes a
42. upply cables are not damaged e Check that the power supply voltage is 15 24Vdc 10 e Check the power supply indicator is illuminated on the front of the DP1200 The display works but Either the supply voltage is too low or the power supply or mains supply has an intermittent fault resets from time to time without any keys being e Check that the power supply voltage is 15 24Vdc 10 pressed e Check that all the connections are secure The display works but gives erratic readings the last digit jitters or the measurements jump to new figures unexpectedly The unit does not respond Disconnect the DP1200 from its power supply wait 15 seconds and then reconnect to any key presses This indicates that the unit is not receiving a proper signal from the encoder There may be a poor earth ground connection Both the DP1200 and the machine on which it is installed must have proper earth ground connections There may be a problem with the encoder no Sig or SIG FAIL e Check that the encoder connections are secure appears in the display e Check that there is no damage to the connectors or to the encoder e Switch the DP1200 off and back on again e Swap the encoder to another axis to confirm whether the encoder or the DP 1200 is at fault e Check the Encoder Type to ensure it is correct e Check the Radius Diameter setting The Diameter setting causes the axis to read double e Check the Error Compensation f
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