User's Manual ND 231B (SW 349 797-01)
Contents
1. 335 E 172 0 2 137 6 77 008 10 DA 239 9 41 15 1 48 eo g 55 OO X41 Specifications 43 HEIDENHAIN DR JOHANNES HEIDENHAIN GmbH Dr Johannes Heidenhain Straf e 5 83301 Traunreut Germany lt 49 86 69 31 0 FAX 49 86 69 50 61 e mail info heidenhain de Service 49 86 69 31 12 72 TNC Service 49 86 69 31 14 46 FAX 49 86 69 9899 e mail service heidenhain de http www heidenhain de HEIDENHAIN G B Limited 200 London Road Burgess Hill West Sussex RH15 9RD Great Britain 01444 247711 01444 870024 350 274 21 SW 349 797 01 2 6 2000 in Germany Subject to change without notice2. display Frozen 8888222858822z82 222222222823888582888228 nh gl E concurrent SSSSSSSSSSSSSSSSSSSOSOSSSSSCSSSCSSGSSGSS display e Error Messages Display Problem Command for measured value output followed too quickly by another 1 RS232 FAST SIGNAL X1 Encoder signal is too weak The scale may be contaminated 1 The connected device has not sent a DSR signal 1 DSR MISSING REF ERR X1 The spacing of the reference marks as defined in P43 is not the actual spacing FORMAT ERR Data format baud rate etc do not match 7 FRQ ERR X1 Input frequency too high for encoder input Traversing speed may be too fast 7 MEMORY ERR Checksum error Check the datum operating parameters and compen sation values for nonlinear axis error compensation If this error recurs contact your service agency 1 These errors are important for the attached device The error signal pin 19 at D sub connection EXT is active Other Error Displays If OVERFLOW appears the measured value is too large or too small gt Set anew datum or gt Move the axis back If all sorting signals light up the upper sorting limit is smaller than the lower limit gt Chang
3. Confirm entry with ENT Parameter P30 1 appears on the display By paging through the list of operating parameters you can display and if necessary change each protected operating parameter and of course each user parameter Once you have entered the code number the protected operating parameters remain accessible until the display unit is switched off Functions for changing the operating parameters Function Page forward in the list of operating parameters ey Page backward in the list of operating parameters Reduce parameter value Increase parameter value Correct entry and display parameter designations Confirm change or numerical entry leave list of operating parameters A changed parameter is stored as soon as you e leave the list of operating parameters or e page forward or backward after the change Operating Parameters 17 List of Operating Parameters 18 List of Operating Parameters Parameter Settings Function P00 CODE Enter the code number 9 51 48 to change the protected operating parameters 01 Units of measurement 1 Display in millimeters MM Display in inches INCH P06 DISPL Displayed information Signals from encoder at X1 DISPLAY X1 Signals from encoder at X2 DISPLAY X2 Sum display X1 X2 X1 ADD X2 Difference display X2 X2 X1 SUB X2 P11 SCL Scaling factor Scaling factor on SCALING ON Scaling factor off
4. Pin 1 0V pe Triggering the Contact and Pulse inputs at D sub connection EXT X41 ts te to tg Signal transit times for measured value output after Pulse or Contact Measured value output after STX signal Ctrl If the display unit receives the control character STX Ctrl over the RS 232 C V 24 interface X31 it outputs the current measured value over the interface Transfer the control character Ctrl B over the RXD line of the RS 232 C V 24 interface X31 Characteristic times for measured value output Process Time Storage delay 151115 Measured value output after t lt 50 ms Regeneration time t320 10 1 18 20 CLS 30 PRINT V 24 RS 232 C 40 OPEN COM1 9600 E 7 AS 1 50 PRINT 1 CHR 2 60 IF INKEY lt gt THEN 130 70 C LOC 1 80 IF C lt L THEN 60 90 XS INPUTS L 1 100 LOCATE 9 1 110 PRINT X 120 GOTO 50 130 END Duration of measured value transfer _ 187 11 number of blank lines 5 tp baud rate BASIC program for measured value output with Ctrl B Propagation times for measured value output after Ctrl B RS 232 C V 24 Data Interface X31 33 Switching Inputs and Outputs EXT X41 34 Switching Inputs and Outputs EXT X41 AN 0 Danger to internal components Voltage sources for external circuitry must
5. 232 C V 24 Data Interface X31 The RS 232 C V 24 interface X31 of your display unit enables you to output measured data in ASCII format for example to a printer or PC Connecting cable You can use a connecting cable with full wiring figure at upper right or simplified wiring below right A cable with full wiring is available from HEIDENHAIN Id Nr 274 545 On this type of cable pin 6 and pin 8 are additionally connected over a jumper Maximum cable length 20 m 66 ft ND CHASSIS GND 1Q 1 CHASSIS GND TXD 2 TXD RXD 3 3 RXD RIS 4 4 RTS CTS 5 CTS DSR 6 6 DSR SIGNAL GND 7 SIGNAL GND DTR 20 20 DTR Full wiring ND CHASSIS GND 1Q _ 1 CHASSIS GND TXD does ande 2 TXD RXD 3 3 RXD RTS 40 9 e 4 RTS cis 50 e 5 CTS DSR 60 DSR SIGNAL GND 70 4 9 7 SIGNAL GND 20 O e 20 DTR Simplified wiring RS 232 C V 24 Data Interface X31 29 RS 232 C V 24 Data Interface X31 30 Pin layout RS 232 C V 24 X31 Pin Signal Assignment 1 CHASSIS GND Chassis ground 2 TXD Transmitted data 3 RXD Received data 4 RTS Request to send 5 CTS Clear to send 6 DSR Data set ready 7 SIGN GND Signal ground 8to19 Not assigned 20 DTR Data terminal ready 21t025 Not assigned Levels for TXD and RXD Logic level Voltage level Active 3Vto 15V Not active 3Vto 15V Lev
6. SCALNG OFF P12 1 SCL Scaling factor X1 Enter a numerical value 0 100000 P12 9 999999 Default setting 1 000000 P12 2 SCL Scaling factor X2 Enter a numerical value 0 100000 P12 9 999999 Default setting 1 000000 Parameter P17 SORT P18 L LIMIT Settings Function Sorting and tolerance checking Sorting and tol checking ON SORT ON Sorting and tol checking OFF SORT OFF Lower limit for sorting P19 U LIMIT Upper limit for sorting P23 DISPL Display stop for measured value output Concurrent display no display freeze the display value is the current actual value DISPL ACTL Frozen display hold display until next measured value output DISPL HOLD Frozen concurrent display freeze display as long as Pulse Contact for measured value output is present DISPL STOP P30 1 DIR Counting direction X1 Positive counting direction with positive direction of traverse DIRECT POS Negative counting direction with positive direction of traverse DIRECT NEG P30 2 DIR Counting direction X2 Positive counting direction with positive direction of traverse DIRECT POS Negative counting direction with positive direction of traverse DIRECT NEG Parameter P31 1 S PER Settings Function Signal period of encoder X1 0 000 000 01 P31 99 999 9999 Default setting 10 um P31 2 S PER P33 1 COUNT Signal period of encoder X1 0 000 000 01 P31 99 999 9
7. back to datum 1 the display unit resumes display of the MT s actual position Without datum setting unknown assignment of measured values to positions After datum setting Assignment of measured values to positions Sorting and Tolerance Checking In the sorting and tolerance checking mode the display unit compares the displayed value with the programmed upper and lower sorting limits The sorting and tolerance checking mode is enabled and disabled with operating parameter P17 Entering sorting limits Sorting limits are entered in operating parameters P18 and P19 see Operating Parameters Sorting signals The display indicators and switching outputs at D sub connec tion EXT X41 see applicable section sort the display value into one of three classes Display Meaning Measured value is within sorting limits Measured value is smaller than lower sorting limit lt gt Measured value is greater than upper sorting limit Operating parameters for sorting and tolerance checking P17 SORT Sorting ON OFF P18 L LIMIT Lower sorting limit P19 U LIMIT Lower sorting limit Rework Z Example Upper sorting limit 26 02 mm Lower sorting limit 26 00 mm Measured Value Output For technical information on the RS 232 C V 24 data interface X31 information on the dat
8. conform to the recommendations in EN 50 178 for low voltage electrical separation Connect inductive loads only with a quenching diode parallel to the inductance Only use shielded cable Connect the shield to the connector housing Outputs at D sub connection EXT X41 Inputs at D sub connection EXT X41 Pin Function 4 Display value is zero 5 Measured value trigger limit A1 P62 6 Measured value trigger limit A2 P63 7 Measured value lt lower sorting limit P18 8 Measured value gt upper sorting limit P19 9 Error see Error Messages Pin Function 1 10 OV 2 Reset display to zero clear error message 3 Set display to the value selected in P79 4 Ignore reference mark signals 5 Start series of measurements 1 6 Externally select display value for series of measurements 1 7 Display MIN value of series of measurements 1 Display MAX value of series of measurements 1 9 Display difference MIN 1 22 Pulse Output measured value 23 Contact Output measured value 25 Enable or disable REF mode current REF status is changed 12 13 24 Do not assign 11 20 21 Vacant Inputs Input signals Internal pull up resistor 1 active with low level Outputs Output signals Open collector outputs active with low level Trigger by making contact against 0 V or by low level signal over TTL logic device Delay for set zero rese
9. the ND 231 B e through switching inputs see D sub connection EXT or e with the operating parameters 06 see Operating Parameter list If you use the switching inputs the setting of PO6 has no influence on the display information If none of the inputs for the selection of display information pin 6 to pin 9 is active or if more than one is active then the settings of the operating parameter 06 apply e Position if the encoder on X1 6 DISPLAY X1 e Position if the encoder on X2 P06 DISPLAY X2 e Sum display P06 X1 ADD X2 e Difference display PO6 X1 SUB X2 Switching signals As soon as the trigger points defined in parameters are reached the corresponding outputs pins 15 16 are activated You can set up to two trigger points The switching point zero has a separate output see Zero crossover Signals for sorting and tolerance checking If the sorting limits defined in parameters are exceeded the corresponding outputs pins 17 18 are activated Output EE _ RE Path Switching point Measured value lower sorting limit Measured value Upper sorting limit Path Lower limit Upper limit Signals Operating parameters Pin Switching signals P62 switching limit 1 15 P63 switching limit 2 16 Sorting signals P18 lower sorting limit 17 P19 upper sorting limit 18 Zero crossover The display value zero activates the corresponding output pin 14
10. 0 Single 1000 0 01 1 2 0 0005 5 4 LS 603 603C 0 005 5 3 0 0002 2 4 Linear Encoders 23 Linear Encoders parameter settings for HEIDENHAIN linear encoders with 11 pA signals continued Reference Millimeters Inches 9 marks Display Display a step Eg Eg ts IES inmm E o9 in inches EE o9 SE Q oS o lt oig OE 43 P33 38 P33 8 5 106 106 20 Single 1000 0 001 1 3 0 00005 5 5 LS 406 406C 0 0005 5 4 0 00002 2 5 LS 706 706C ST 1201 LB 302 302C 40 Single 2000 0 005 5 3 0 0002 2 4 LIDA 10x 10xC 0 002 2 3 0 0001 1 4 0 001 1 3 0 00005 5 5 0 0005 5 4 0 00002 2 5 Recomma only for LB 302 0 0002 2 4 0 000001 1 5 0 0001 1 4 0 0000005 5 6 LB 301 301C 100 Single 1000 0 005 5 3 0 0002 2 4 0 002 2 3 0 0001 1 4 0 001 1 3 0 00005 5 5 LIM 102 12800 Single 0 1 1 1 0 005 5 3 0 05 5 2 0 002 2 3 Example Your length gauge MT 101 Desired display step 0 0005 mm 0 5 um Parameter settings P01 mm P43 single P31 10 P33 5 P38 4 Nonlinear Axis Error Compensation If you want to use the nonlinear axis error compensation feature you must e Activate the feature with operating parameter 40 see Operating Parameters e Traverse the reference marks after switching on the display unit e enter a compensation value table Your machine may h
11. 4 6 mm 224 mm Operating temperature 0 to 45 C 32 to 113 F 20 C to 70 C 4 F to 158 F Storage temperature Weight Approx 1 5 kg 3 3 Ib Relative humidity 75 annual average 90 in rare cases Power supply Line fuse F 1 A inside the housing Primary clocked power supply 100 Vac to 240 Vac 15 to 10 50 Hz to 60 Hz 2 Hz Power consumption 8 W typically Electromagnetic compatibility Class B according to EN 55022 Noise immunity As per VDE 0843 Parts 2 and 4 severity 4 Protection 40 according to IEC 529 Encoder inputs For encoders with sinusoidal output signals 11 App Reference mark evaluation for distance coded and single reference marks Input frequency X1 and X2 Max 100 kHz for 30 m cable length Display step Adjustable Datum points Two Functions Sorting and tolerance checking e Switching and sorting signals Set display and reset display to zero with external signal e Measured value output RS 232 C V 24 Interface Baud rates 110 150 300 600 1200 2400 4800 9600 19 200 38 400 baud ND 231 Dimensions mm inches mah REF 11 L2 SET START PRINT inch ILL IL lt gt DIFF 079 84 6 3 33 ofS Ma x 24
12. 999 Default setting 10 um Counting mode X1 0 1 2 3 4 5 6 7 8 9 COUNT 0 1 0 2 4 6 8 COUNT 0 2 0 5 COUNT 0 5 P33 2 COUNT Counting mode X2 0 1 2 3 4 5 6 7 8 9 COUNT 0 1 0 2 4 6 8 COUNT 0 2 0 5 COUNT 0 5 P38 1 DP POS Decimal places X1 1 1 2 3 4 5 6 up to 8 for inch display P38 2 DP POS Decimal places X2 1 1 2 3 4 5 6 up to 8 for inch display P40 1 COMP Select encoder compensation X1 No compensation COMP OFF Nonlinear up to 64 compensation points NONL COMP Linear compensation COMP ON 1 Parameter Settings Function P40 2 COMP Select encoder compensation X2 No compensation COMP OFF Nonlinear up to 64 compensation points NONL COMP Linear compensation COMP ON P41 1 L COMP Linear error compensation X1 99 999 9 lt P41 lt 99 999 9 um m Default setting 0 Example Find input value for P41 Displayed measuring length L4 620 000 mm Actual length measured e g with the VM 101 comparator System from HEIDENHAIN 619 877 mm Length difference AL L Lg 123 um Compensation factor k P41 AL L 123 um 0 62 k 198 4 um m P41 2 L COMP Linear error compensation X2 99 999 9 P41 99 999 9 um m Default setting 0 1 Depends on signal period P31 and measuring unit PO1 List of Operating Parameters 19 List of Oper
13. J 1864 HEIDENHAIN User s Manual ND 231 Measured Value Displays 6 2000 Actual value and input display Numeric keypad 9 decades and algebraic sign with decimal point REF 11 2 SET START PRINT inch cc E MIN MAX DIFF Status display with backlit indicators Function Datum setting Confirming the entry value Setting display to value from P79 P80 Exiting the parameter list Datum selection Paging backward in the parameter list MOD Outputting the meas value with PRINT Selecting parameters after switch on Paging forward in the parameter list g Clearing the entry Resetting the display to zero P80 CL plus MOD Parameter list CL plus number Selecting a parameter Clear parameter entry and show parameter number Algebraic sign Decreasing the parameter value Decimal point Increasing the parameter value Indicator REF Meaning If the decimal point is blinking Display is waiting for the reference mark to be traversed If the decimal point is not blinking Reference mark was traversed display unit saves the datum in nonvolatile memory Blinking Display is waiting for operator to press ENT or CL inch Position values in inches L3 2 Selected datum PRINT Measured value output with the MOD key SET Blinking Display is waiting for entry values Sorting mode Measure
14. Minimum signal duration is 180 ms Time curve of signal at pin 15 for trigger limit A1 5 mm ta lt 30 ms Switching Inputs EXT X41 37 Switching Outputs EXT X41 38 Switching signal for errors The display unit permanently monitors functions such as measuring signal input frequency and data output and displays an error message if it detects an error If errors occur that seriously influence measurement or data output the display unit activates a switching output This feature allows monitoring of automated processes Error Locking the Keypad You can disable or re enable the keypad by entering the code number 24 65 84 gt Select the user parameter POO CODE see Operating Parameters Enter the code number 24 65 84 gt Confirm the entry with ENT With the e or key select KEYS KEYS OFF gt Confirm your selection with ENT If the keypad is locked you can select only the datum or CODE through the MOD key Displaying the Software Version 40 Displaying the Software Version To display the software version of the display unit enter the code number 66 55 44 gt Select the user parameter POO CODE gt Enter the code number 66 55 44 gt Confirm your entry with ENT gt The display unit shows the software number gt With the key you can switch the display to the date of issue gt To exit the softw
15. N MT length gauges with 11 These length gauges have one reference mark The scales of other photoelectric linear encoders see Linear Encoders can contain one reference mark or several distance coded refer ence marks If there is an interruption of power the relationship between the position of the length gauge and the displayed position value is lost The reference marks on the position encoders and the REF reference mark evaluation feature enable the display unit to quickly reestablish this relationship again when the power is restored When a reference mark is crossed over a signal is generated which identifies that position as a reference point At the same time the display unit restores the relationship between length gauge position and display values which you last defined by setting the datum If the linear encoders have distance coded reference marks you need only traverse a maximum of 20 mm to restore the datum for a signal period of 20 um Scale in linear encoder Reference mark Distance coded reference marks Reference marks on linear encoders Switch on Traversing the Reference Marks Eme Turn on the power Switch is located on rear panel e Units displays ND 231 B for 2 seconds e Unit displays ENT CL 1 e REF indicator is blinking P x Switch on the reference mark evaluation function position value that was last assign
16. a format etc see the chapter RS 232 C V 24 Interface X31 Measured values can be output over the RS 232 C V 24 interface X31 for example to a printer or PC There are several ways to start measured value output Press the MOD key note the parameter setting P86 or Input the command STX Ctrl B over the RXD input of the RS 232 C V 24 interface X31 or gt Input signal for measured data output Pulse or Contact at the D sub connection EXT X41 The RS 232 C V 24 interface X31 enables you to connect a printer or a PC to your display unit Display Freeze With the latch command the display can be stopped for any period of time The internal counter remains active Parameter P23 selects the display freeze mode and offers three settings e Concurrent display no display freeze the display value is the current measured value Frozen display display value is frozen and is updated with each signal for measured value output Frozen concurrent display display remains frozen as long as the latch signal is present after the signal the display resumes continuous display of the current meas ured values e i5 e i5 e 1o e T q a Position Latch signal Frozen 888888888288828822z22222Z22 ZZ2EZZ2828 uo E
17. ackable Adhesive plug in feet supplied with your unit prevent the stacked units from being moved out of place 172 0 2 6 77 008 140 0 2 5 51 008 Hole positions for mounting the ND display unit 7 2 EN 2 Alternatives of stacking the display units Power Connection The rear panel of the ND 281 B contains a connecting jack for a power cord with Euro connector power cord supplied with the delivery Minimum cross section of the power cord 0 75 mm2 Power supply 100 Vac to 240 Vac 15 to 10 50 Hz to 60 Hz x2 Hz A voltage selector is therefore not necessary Unplug the power cord before opening the housing Connect the grounding conductor Do not interrupt the grounding conductor Danger of electrical shock Do not engage or disengage any connections while the unit is under power Use only original replacement fuses Danger to internal components To increase noise immunity connect the ground terminal on the rear panel to the central ground point of the machine Minimum cross section 6 mm2 LES Power Connection 15 Operating Parameters 16 Operating Parameters Operating parameters allow you to modify the operating characteristics of your ND display unit and define the evaluation of the encoder si
18. are version display mode press ENT Distance to Go Display Mode 1 Normally the display shows the actual position of the encoder However it is often more helpful to display the remaining distance to an entered nominal position especially when you are using the display unit for machine tools and automation purposes You can then position simply by traversing to display value zero You can access the distance to go display by entering the code number 246 582 Display Meaning DELTA ON Distance to go display active DELTA OFF Distance to go display not active Traversing to zero with distance to go display gt Select datum point 2 gt Enter the nominal position gt Move the axis until the display value is zero Function of switching outputs A1 and A2 In the distance to go mode switching outputs 1 pin 15 and A2 pin 16 have a different function they are symmetrical to the display value zero For example if a switching point of 10 mm is entered in P62 output A1 switches at both 10 mm and 10 mm The figure below shows output signal A1 when approaching zero from the negative direction p D10 0 10 wm Path Pin 15 A1 Time curve of a signal for switching limit 1 10 mm ty 30 ms tgs 180 ms Distance to Go Mode 41 Specifications 42 Specifications Housing ND 231B Benchtop design cast metal housing W H D 239 mm 8
19. ating Parameters 20 Parameter Settings Function Parameter Settings Function P43 1 REF Reference marks X1 P44 2 REF Reference mark evaluation 1 One reference mark SINGLE REF Evaluate the reference mark REF X2 ON Distance coded with 500 e SP Do not evaluate the reference SP signal period 500 SP mark REF X2 OFF Distance coded with 1000 SP P45 1 ALARM Encoder monitoring X1 e g for HEIDENHAIN LS C 1000 SP No monitoring ALARM OFF Distance coded with 2000 e SP 2000 SP Monitor the frequency FREQUENCY Distance coded with 5000 e SP 5000 SP Monitor contamination CONTAMINAT P43 2 REF Reference marks X2 Contamination frequency FRQ CONT One reference mark SINGLE REF P45 2 ALARM Encoder monitoring X2 Distance coded with 500 SP No monitoring ALARM OFF SP signal period 39D SE Monitor the frequency FREQUENCY Distance coded with 1000 e SP CONTAMINAT e g for HEIDENHAIN LS C 1000 SP contamination 7 inati f FRQ CONT Distance coded with 2000 e SP 2000 SP Contamination frequency FRO P50 65232 Baud rate Distance coded with 5000 e SP 5000 SP 110 150 300 600 1200 44 1 REF Reference mark evaluation 2400 4800 9600 19 200 Evaluate the reference mark REF X1 ON 38400 baud Do not evaluate the reference P51 RS232 Additional blank lines mark REF X2 OFF 1 f an encoder input is unoccupied it must
20. ave a nonlinear axis error due to factors such as axis sag or leadscrew errors Such deviations are usually measured with a comparator measuring system such as the HEIDENHAIN VM 101 An axis can be error compensated only with respect to an error causing axis A compensation table with a total of up to 64 compensation values can be entered for every axis You select the compensation table through POO CODE and by entering the code number 10 52 96 see Operating Parameters Ascertaining the compensation values To ascertain the compensation values e g with a VM 101 you must select the compensation table and then press the non key to select the REF display The letter R 1 or R 2 at the left of the display indicates that the displayed position value is given with respect to the refer ence mark If R 1 or R 2 blinks you must traverse the reference mark Entries in the compensation value table e Axis to be error compensated X1 or X2 e Error causing axis X1 or X2 e Datum Here you enter the point at which the compensation is to begin This point indicates the absolute distance to the reference point Do not change the datum after measuring the axis error and before entering the axis error into the compensation table e Spacing of the compensation points The spacing of the compensation points is expressed as Spacing 2 um Enter the value of the exponent x into the compensation value table Minimu
21. be deactivated The settings go into effect after switch on BK LINI ll H during data output 0 lt P51 lt 99 Default setting 1 Parameter P62 Al Settings Function Trigger limit 1 P63 2 Trigger limit 2 P79 PRESET Value for datum point Enter numerical value for datum setting over switching input or with ENT key Settings Function Print via MOD key P80 ENT CL Set display No set Set with CL ENT CL ENT OFF Zero reset with CL setting disabled with ENT STs acy sts ON Zero reset with CL and set with ENT to value selected in P79 CL ENT ON P82 DISPL ON Message after switch on ENT CL message MESSAGE ON No message MESSG OFF PRINT via MOD disabled PRINT OFF PRINT via MOD enabled PRINT ON P98 LANGUA Conversational language German LANGUAGE D English LANGUAGE GB French LANGUAGE F Italian LANGUAGE I Dutch LANGUAGE NL Spanish LANGUAGE E Danish LANGUAGE DK Swedish LANGUAGE S Finnish LANGUAGE FI Czech LANGUAGE CZ Polish LANGUAGE PL Hungarian LANGUAGE H Portuguese LANGUAGE P P85 EXT REF External REF REF over D sub port EXT EXT REF ON No REF over D sub port EXT EXT REF OFF List of Operating Parameters 21 Linear Encoders 22 Linear Encoders The ND 231 B display unit is designed for use together with photoelectrical encoders with 11 uApp sinusoidal signals Display step with linear
22. d value less than lower limit within tolerances greater than upper limit MIN DIFF START Nonfunctional Items Supplied with ND 231 Measured value display unit ND 231B in benchtop housing Two 11 UApp encoder inputs Id Nr 344 993 xx Power cable 3 m 9 9 ft User s Manual ND 231 B Adhesive inserts For stacking the ND 231 B This Manual describes the ND 231 B measured value display units with software number 349 797 01 and higher The software number is shown on a label on the back panel of the housing Contents Working with the Display Unit Position Encoders and Reference Marks 6 Switch on Traversing the Reference Points 7 Datum Setting 8 Sorting and Tolerance Checking 9 Measured Value Output 10 Display Freeze 11 Error Messages 12 Installation and Specifications Rear Panel Accessories 13 Mounting 14 Power Connection 15 Operating Parameters 16 List of Operating Parameters 18 Linear Encoders 22 Nonlinear Axis Error Compensation 25 RS 232 C V 24 X31 Data Interface 29 Switching Inputs and Outputs EXT X41 34 Locking the Keyboard 39 Displaying the Software Version 40 Distance to Go Mode 41 Specifications 42 Dimensions 43 Position Encoders and Reference Marks ND 231 display unit is intended for use with photo electrical linear encoders with sinusoidal signals primarily for HEIDENHAI
23. e operating parameters P18 and or P19 To clear error messages When you have removed the cause of the error gt Clear the error message with the CL key Rear Panel recommendations in EN 50 178 for separation from line power att Ports X1 X2 X31 and X41 comply with the Encoder input X1 Data interface D sub connection fi X31 V 24 RS 232 C X41 EXT HEIDENHAIN flange socket 9 pin Input signals N 11 Maximum encoder cable length 30 m 98 5 ft Maximum input frequency 100 kHz RS 232 C V 24 data interface X31 25 D sub connection female Switching inputs and outputs EXT X41 25 D sub connection male Accessories Connecting elements Connector female 25 for D sub connection X41 Id Nr 249 154 ZY Connector male 25 for D sub connection X31 Id Nr 245 739 ZY Data interface cable 3 m 9 9 ft 25 pin for D sub con complete nection X31 Id Nr 274 545 01 100 240 50 60 2 eue E Power switch Ground Input X1 for one connection HEIDENHAIN 11 encoder Input X2 for one HEIDENHAIN 11 encoder Rear Panel Accessories 13 Mounting 14 Mounting You can fasten the ND 231 B from below by using M4 screws see illustration at right ND 231 B display units are st
24. ed to the reference mark position is displayed REF indicator lights up Decimal points are blinking Traverse the reference marks Move the plunger until the display starts counting and the decimal points stop blink ing The display is now ready for operation 2 For automation purposes crossing over the reference marks and the display ENT CL can be disabled with parameter P82 REF Mode Crossing over the reference marks automatically switches the display to REF mode The last assignment of display values to length gauge positions is stored in nonvolatile memory 1 Press the CL key if you choose not to cross over the reference marks Note that in this case the relationship between length gauge position and display value will be lost if the power is interrupted or if the unit is switched off Datum Setting The datum setting procedure assigns a display value to a known position With the ND 200 series you can set two separate datum points There are several ways to set the datum e Enter a numerical value or Transfer a value from an operating parameter see P79 P80 or e By external signal Select datum 1 or 2 Enter numerical value here 5 1 Confirm the entered numerical value NS You can switch between datums 1 and 2 as desired Datum 2 can be used for example for working with incremental dimen sions When you switch
25. ed value DISPL ACTL Frozen display Display is stopped frozen and updated by every measured value output signal DISPL HOLD Frozen concurrent display Display is frozen as long as a measured value output signal is present DISPL STOP Measured value output via PRINT function gt Press the MOD key note parameter setting P86 Duration of measured value transfer 187 11 number of blank lines tp 5 baud rate RS 232 C V 24 Data Interface X31 31 RS 232 C V 24 Data Interface X31 32 Measured value output after signal through the Contact or Pulse inputs To start measured value output through the EXT interface X41 you can either gt Close the Contact input 23 on X41 against 0 V for example with a simple switch make contact or gt Close the Pulse input 22 on X41 against 0 V for example by triggering the input with a TTL logic device such as SN74LSxx Characteristic times for measured value output Process Time Minimum duration of Contact signal te 2 7 ms Minimum duration of Pulse signal to 2 1 5 us Storage delay after Contact 4 lt 5ms Storage delay after Pulse t lt 1 us Measured value output after t2 lt 57 ms Regeneration time t320 Duration of measured value transfer fe 187 11 number of blank lines s baud rate EXT X41 Pin 23 Pin 1 0 EXT X41 Pin 22
26. els for RTS CTS DSR and DTR Logic level Voltage level Active 3Vto 15V Not active 3Vto 15V Data format and control characters Data format 1 start bit 7 data bits Even parity bit 2 stop bits Control characters Call measured value STX Ctrl B Interrupt DC3 Ctrl S Continue DC1 Ctrl O Interrogate error message ENO Ctrl E Example Data sequence during measured value output Measured value 5 23 mm The measured value is within the sorting limits 2 and is the current value A of a series of measurements Measured value output 5 eo o NGO 2 3 BAERT D Algebraic sign Numerical value with decimal point 10 characters on the whole leading zeros are output as blank spaces Blank space Unit Blank space mm inch fault Sorting status lt gt if P18 gt P19 or blank space Axis designation 1 X1 2 X2 A X1 X2 S X1 X2 CR carriage return LF line feed lt E E gt Operating parameters for measured value output Parameter Function P50 RS232 Baud rate P51 RS232 Number of additional blank lines for measured value output Display freeze during measured value output In operating parameter P23 you can specify how the measured value output signal will affect the display unit Display freeze during measured value output P23 Concurrent display no display freeze The display value is the current measur
27. encoders You can select a specific display step by adapting the following operating parameters Subdivision P31 Counting mode P33 Decimal places P38 Example Linear encoder with a signal period of 10 um Desired display step 0 000 5 mm Subdivision P31 10 Counting mode P33 5 Decimal places 38 4 The tables on the following pages will help you to select the appropriate parameter settings Recommended parameter settings for HEIDENHAIN linear encoders with 11 pA signals aee 2 Reference Millimeters Inches marks Display Display so 40872 s Eg inmm 5 5 inches ZES 59 o one o 5 ig Eja P33 P38 P33 P38 CT 2 Single 0 0005 5 4 0 00002 2 5 MT xx01 0 0002 2 4 0 00001 1 5 LIP 401A 401R Single 0 0001 1 4 0 000005 5 6 0 00005 5 5 0 000002 2 6 Recomma only for LIP 401 0 00002 2 5 0 000001 1 6 0 00001 1 5 0 0000005 5 7 0 000005 5 6 0 0000002 2 7 LF 103 103C 4 Single 5000 0 001 1 3 0 00005 5 5 LF 401 401C 0 0005 5 4 0 00002 2 5 LIF 101 101C 0 0002 2 4 0 00001 1 5 LIP 501 501C 0 0001 1 4 0 000005 5 6 LIP 101 Single 0 00005 5 5 0 000002 2 6 Recomma only for LIP 101 0 00002 2 5 0 000001 1 6 0 00001 1 5 0 0000005 5 7 MT xx 10 Single 0 0005 5 4 0 00002 2 5 0 0002 2 4 0 00001 1 5 0 0001 1 4 0 000005 5 6 LS 303 303C 2
28. gnals Operating parameters are designated by e the letter P a two digit parameter number and abbreviation Example PO1 INCH The factory settings of the operating parameters are indicated in the parameter list see List of Operating Parameters in boldface type Parameters consist of user parameters and protected operating parameters which can only be accessed by entering a code number User parameters User parameters are operating parameters that can be changed without entering the code number POO to P30 P50 P51 P79 P86 P98 The functions of the individual user parameters are detailed in the list of operating parameters see List of Operating Parameters To access a user parameter after switching on the display While ENT CL is displayed Display first user parameter MOD during operation Together Display first user parameter To go directly to a user parameter Together Press and hold CL while entering the first digit of the parameter number here 1 Enter the second digit of the parameter number here 9 The display shows the selected user parameter X Code number for changing protected operating parameters If you wish to change protected operating parameters you must first enter the code number 95 148 gt Select the user parameter POO CODE gt Enter the code number 9 51 48
29. he datum V J C DATUM X1 or X2 shown for approx two seconds Enter the active datum for the error on the axis to be compensated e g 27 mm Press MOD to select the next input box 2 C Cu SPACING EB x S Enter the spacing of the compensation points on the axis to be corrected for example p um equals 1 024 mm Press MOD four times to select COMP NR 01 You cannot enter values in the POS NR 00 COMP NR 00 and POS NR 01 boxes Cc P NR 01 ol 2 rg Enter the associated compensation value e g 0 01 mm Press MOD twice to select COMP NR 02 You cannot enter any values in the POS NR 02 box Cu COMP NR 02 2 8 Enter further compensation points If you want so select a compensation point directly press CL and simultaneously enter the desired compensation point number 6 ay Conclude entry Nonlinear Axis Error Compensation 27 Nonlinear Axis Error Compensation 28 Deleting a compensation value table Together Select the operating parameters with Select POO CODE P00 CODE 1 Enter the code number 10 52 96 EE confirm with ENT Select the compensation value table axis 1 or 2 Select the delete function Exit the compensation table mode RS
30. m input value 6 0 064 mm Maximum input value 20 2 1048 576 mm Example 900 mm traverse with 15 compensation points gt 60 000 mm spacing between points Nearest power of two 2 65 536 mm see Table for determining the point spacing Input value in the table 16 e Compensation value You enter the measured compensation value in milli meters for the displayed compensation point Compensa tion point 0 always has the value 0 and cannot be changed Nonlinear Axis Error Compensation 25 Table for determining the point spacing 26 Exponent Point spacing d in mm in inches 5 6 0 064 0 0023 2 7 0 128 0 0050 E 8 0 256 0 0100 9 0 512 0 0200 0 1 024 0 0403 g 11 2 048 0 0806 ui 2 4 016 0 1581 m 13 8 192 0 3225 x 4 16 384 0 6450 lt 15 32 768 1 290 5 6 65 536 2 580 17 131 072 5 160 8 262 144 10 32 S 19 524 288 20 64 2 20 1048 576 41 25 Selecting the compensation table entering an axis correction Together with wv fe P00 CODE unga Hoa Em d X1 s Select the axis whose error is to compensated X1 or X2 Press MOD to go to the next input box P FCT or X1 FCT X2 7 Select the error causing axis 1 2 Select the operating parameters Select POO CODE Enter the code number 10 52 96 confirm with ENT Press MOD to select t
31. t ty lt 2 ms Minimum pulse duration for all signals tmin gt 30 ms Signal level of inputs Status Level High 3 9V lt SU lt 15V Low O05V lt sU lt 09V 1 lt 6 Delay until signal output ty lt 30 ms Signal duration of zero signal trigger limit A1 A2 ty gt 180 ms Signal level of outputs Status Level High 0 lt 32 IS 10 Low U lt 0 4V 1 lt 100 tmin gt 30 ms 1 lt 100 4 lt 32 V Switching Inputs and Outputs EXT X41 35 Switching Inputs EXT X41 36 Setting and zero resetting the display With an external signal you can set the display to the value selected in parameter P79 pin 3 or reset each axis to zero pin 2 Enabling and disabling REF mode Operating parameter P85 allows you to activate the input pin 25 which will be used for setting the display externally to REF mode when the unit is switched on or when the power is restored after an interruption The next signal deactivates REF mode again switchover function Ignoring reference mark signals If this input pin 4 or pin 24 is active the display will ignore all reference mark signals A typical application of this function is for measuring lengths with a rotary encoder and spindle in this case a cam switch releases the reference mark signal at a preset position Selecting the display information You can select the display information of
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