HEIDENHAIN ND 231B User Manual

HEIDENHAIN ND 231B User Manual

Measured value displays

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SALES & SERVICE:
A Tech Authority, Inc.
13745 Stockton Ave.
Chino CA 91710
909-614-4522
sales@atechauthority.com
User's Manual
ND 231B
Measured Value Displays
English (en)
12/ 2001

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Summary of Contents for HEIDENHAIN ND 231B

  • Page 1 SALES & SERVICE: A Tech Authority, Inc. 13745 Stockton Ave. Chino CA 91710 909-614-4522 sales@atechauthority.com User’s Manual ND 231B Measured Value Displays English (en) 12/ 2001...
  • Page 2 Actual value and input display Numeric keypad (9 decades and algebraic sign) with decimal point SET START PRINT inch < > ACTL DIFF – HEIDENHAIN Status display with backlit indicators...
  • Page 3 Function Indicator Meaning • Datum setting If the decimal point is blinking: • Confirming the entry value Display is waiting for the reference mark • Setting display to value from P79 (P80!) to be traversed. • Exiting the parameter list If the decimal point is not blinking: Reference mark was traversed—...
  • Page 4 Items Supplied with ND 231 B Measured value display unit ND 231 B in benchtop housing Two 11 µA 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 349 797-04...
  • Page 5: Table Of Contents

    Contents Working with the Display Unit Installation and Specifications Position Encoders and Reference Marks Rear Panel, Accessories Switch-On, Traversing the Reference Points Mounting Datum Setting Power Connection Sorting and Tolerance Checking Operating Parameters List of operating parameters Measured-Value Output Linear Encoders Display Freeze Multipoint Axis Error Compensation Error Messages...
  • Page 6: Position Encoders And Reference Marks

    Position Encoders and Reference Marks The ND 231 B display unit is intended for use with photo- electrical linear encoders with sinusoidal signals: primarily for HEIDENHAIN MT length gauges with 11 µA Scale in These length gauges have one reference mark. The scales of...
  • Page 7: Switch-On, Traversing The Reference Points

    Switch-On, Traversing the Reference Marks REF Mode ä Crossing over the reference marks automatically switches the Turn on the power. display to REF mode: The last assignment of display values to (Switch is located on rear panel). length gauge positions is stored in nonvolatile memory. •...
  • Page 8: Datum Setting

    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: • Enter a numerical value, or •...
  • Page 9: Sorting And Tolerance Checking

    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 Accept...
  • Page 10: Measured-Value Output

    (X31), for example to a printer or PC. < > ACTL DIFF – HEIDENHAIN There are several ways to start measured value output: ä Press the MOD key (note the parameter setting P86). ä Input the command STX (Ctrl B) over the RXD input of the RS-232-C/V.24 interface (X31);...
  • Page 11: Display Freeze

    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: • Concurrent display, no display freeze — the display value is the current measured value.
  • Page 12: Error Messages

    Error Messages Display Problem Display Problem RS232 FAST Command for measured value REC. ERROR Error during reception of parame- output followed too quickly by ter and compensation value lists. another. Encoder signal is too weak. Other error displays SIGNAL X1 The scale may be contaminated.
  • Page 13: Rear Panel, Accessories

    D-sub Ports X1, X2, X31 and X41 comply with the connection recommendations in EN 50 178 for separation from line power. Encoder input X1/X2 HEIDENHAIN flange socket 9-pin Input signals 11 µA Maximum encoder cable length 30 m (98.5 ft)
  • Page 14: Mounting

    Mounting 172 ± 0.2 6.77 ± .008" You can fasten the ND 231 B from below by using M4 screws (see illustration at right). Hole positions for mounting the ND display unit ND 231 B display units are stackable. Adhesive plug-in feet (supplied with your unit) prevent the stacked units from being moved out of place.
  • Page 15: Power Connection

    Power Connection The rear panel of the ND 231 B contains a connecting jack for a power cord with Euro connector (power cord included in items supplied). Minimum cross section of the power cord: 0.75 mm Power supply: 100 Vac to 240 Vac (–15% to +10%) 50 Hz to 60 Hz (±2 Hz) A voltage selector is therefore not necessary.
  • Page 16: Operating Parameters

    Operating Parameters To access a user parameter ..after switching on the display: Operating parameters allow you to modify the operating characteristics of your ND display unit and define the While ENT ... CL is evaluation of the encoder signals. Display first user parameter.
  • Page 17 Code number for changing protected operating Functions for changing the operating parameters parameters Function Page forward If you wish to change protected operating parameters, you in the list of operating parameters must first enter the code number 9 51 48: ä...
  • Page 18: List Of Operating Parameters

    List of Operating Parameters Parameter Settings / Function Parameter Settings / Function Enter a code number: Scaling factor X2 P00 CODE P12.2 SCL 9 51 48: To change the protected Enter a numerical value operating parameters 0.100000 < P12 < 9.999999 Default setting: 1.000000 10 52 96: Multipoint axis error compensation...
  • Page 19 = 620.000 mm Counting mode X2 P33.2 STEP Actual length (measured, e.g. 0-1-2-3-4-5-6-7-8-9 COUNT 0-1 with the VM 101 comparator system from HEIDENHAIN) ....L = 619.877 mm 0-2-4-6-8 COUNT 0-2 Length difference ......L = L – L = – 123 µm...
  • Page 20 = no backlash compensation Distance-coded with 1000 • SP During a change in direction, the mechanical play between the (e.g. for HEIDENHAIN LS ...C) 1000 SP encoder and table, the so-called backlash, can cause error. Positive backlash: The rotary encoder moves before the table, Distance-coded with 2000 •...
  • Page 21 Parameter Settings / Function Parameter Settings / Function P45.2 ALARM Encoder monitoring X2 P82 DISPL.ON Message after switch-on No monitoring ALARM OFF ENT...CL message MESSAGE ON Monitor the frequency FREQUENCY No message MESSAGE OFF Monitor contamination External REF CONTAMINAT. P85 EXT.REF REF over D-sub port EXT EXT.REF ON Contamination + frequency FRQ.
  • Page 22: Linear Encoders

    Linear Encoders The ND 231 B display unit is designed for use together with photoelectrical encoders with 11 µA sinusoidal signals. Display step with linear encoders You can select a specific display step by adapting the following operating parameters: • Signal period (P31) •...
  • Page 23 Recommended parameter settings for HEIDENHAIN linear encoders with 11 µA signals Model Reference Millimeters Inches marks Display step Display in mm step in inches P 31 P 43 P 33 P 38 P 33 P 38 single 0.0005 0.00002 MT xx01 0.0002...
  • Page 24 Recommended parameter settings for HEIDENHAIN linear encoders with 11 µA signals (continued) Model Reference Millimeters Inches marks Display step Display in mm step in inches P 31 P 43 P 33 P 38 P 33 P 38 LS 106/106C single/1000 0.001...
  • Page 25: Multipoint Axis Error Compensation

    Do not change the datum after measuring the axis usually measured with a comparator measuring system (such error and before entering the axis error into the as the HEIDENHAIN VM 101). compensation table. An axis can only be corrected in relation to one axis that has •...
  • Page 26 Table for determining the point spacing Exponent Point spacing in mm in inches 0.064 0.0023“ 0.128 0.0050“ 0.256 0.0100“ 0.512 0.0200“ 1.024 0.0403“ 2.048 0.0806“ 4.016 0.1581“ 8.192 0.3225“ 16.384 0.6450“ 32.768 1.290“ 65.536 2.580“ 131.072 5.160“ 262.144 10.32“ 524.288 20.64“...
  • Page 27 Selecting the compensation table, entering an axis correction Select the operating parameters. Together SPACING with Enter the spacing of the compensation points on the axis to be corrected, for example 2 m (equals 1.024 mm). Select P00 CODE. Press MOD four times to select COMP. NR.
  • Page 28 Deleting a compensation value table Select the operating parameters. Together with Select P00 CODE. P00 CODE Enter the code number 10 52 96, confirm with ENT. AXIS X1 Select the compensation-value table (axis X1 or X2). Select the “delete” function. DELETE X1 OR X2 Confirm with ENT or cancel with CL.
  • Page 29: Switching Inputs And Outputs Ext (X41)

    Switching Inputs and Outputs EXT (X41) Inputs at D-sub connection EXT (X41) Function Danger to internal components! Voltage sources for external circuitry must conform 1, 10 to the recommendations in EN 50 178 for low- Reset display to zero, clear error message voltage electrical separation.
  • Page 30 Inputs Outputs Input signals Output signals Internal pull-up resistor 1 k , active with low level "Open collector" outputs, active with low level £ Trigger by making contact against 0 V or Delay until signal output: t 30 ms ³ by low-level signal over TTL logic device Signal duration of zero signal, trigger limit A1, A2: t 180 ms...
  • Page 31 Setting and zero resetting the display 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 With an external signal, you can set the display to the value settings of the operating parameter P06 apply: selected in parameter P79 (pin 3) or reset each axis to zero (pin 2).
  • Page 32 Switching signals Output 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”). Path Switching point Signals for sorting and tolerance checking...
  • Page 33 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 ERROR xx Error output, the display unit activates a switching output.
  • Page 34: Locking The Keyboard

    Locking the Keypad You can lock or release the keypad by entering the code number 24 65 84: ➤ Select the user parameter P00 CODE (see "Operating Parameters"). ➤ Enter the code number 24 65 84. ➤ Confirm the entry with ENT. ➤...
  • Page 35: Displaying The Software Version

    Displaying the Software Version To display the software version of the display unit, enter the code number 66 55 44: ➤ Select the user parameter P00 CODE. ➤ Enter the code number 66 55 44. ➤ Confirm your entry with ENT. ➤...
  • Page 36: Distance-To-Go Mode

    Distance-to-Go Mode Function of switching outputs A1 and A2 In the distance-to-go mode, switching outputs A1 (pin 15) and Normally, the display shows the actual position of the encoder. A2 (pin 16) have a different function: they are symmetrical to However, it is often more helpful to display the remaining the display value zero.
  • Page 37: Rs-232-C/V.24 (X31) Data Interface

    (below right). A cable with full SIGNAL SIGNAL 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)
  • Page 38 Pin layout RS-232-C/V.24 (X31) Data format and control characters Signal Assignment Data format 1 start bit 7 data bits CHASSIS GND Chassis ground Even parity bit Transmitted data 2 stop bits Received data Control characters Call measured value: STX (Ctrl B) Interrupt DC3 (Ctrl S) Request to send Continue DC1 (Ctrl Q)
  • Page 39 Operating parameters for measured value output Measured value output via PRINT function ä Press the MOD key (note parameter setting P86). Parameter Function P50 RS232 Baud rate P51 RS232 Number of additional blank lines for Duration of measured value transfer measured value output 187 + (11 •...
  • Page 40 Measured value output after signal through the “Contact” EXT(X41) or “Pulse” inputs Pin 23 To start measured value output through the EXT interface (X41) you can either: ä Pin 1(0V) Close the “Contact” input (pin 23 on X41) against 0 V, for example with a simple switch (make contact);...
  • Page 41 Measured value output with CTRL B L%=18 If the display unit receives the control character STX (CTRL B) over the RS-232-C/V.24 interface, it immediately transmits the PRINT "V.24/RS-232-C" OPEN "COM1:9600,E,7" AS#1 current measured value back over the interface. CTRL B is received over the RXD line of the interface, and the measured PRINT #1, CHR$ (2);...
  • Page 42: Input/Output Of Parameter And Compensation Value Lists

    Input/Output of Parameter and Compensation-Value Lists REC. PARAM. The display unit is ready to receive a To call the "data transfer" function: reqd. parameter list over the RS-232-C/V.24 interface. After successful reception of the together Select the operating parameters. parameter list, the display unit resets itself with and restarts.
  • Page 43 When receiving lists, the display unit first waits for the starting REC. COMP. character < * >. The receiving mode ends as soon as the The display unit is ready to receive a display unit has received the final character < * >. reqd.
  • Page 44: Output Format Of The Parameter List

    Output Format of the Parameter List 1st line Each parameter output begins with the start character < * > ( HEX: 0x2A) <CR> <LF> 3 characters 2nd line Output of the counter designation N D - 2 3 1 <CR> <LF> 13 characters 5 characters 2 characters...
  • Page 45 b: Parameters: The parameter setting can be changed by entering a value (e.g.: LINEAR COMP. 13.600 etc.). L A S S . 2 0 . 0 0 0 0 <CR> <LF> 15 characters 3 char. 13 characters 2 characters . C 0 M P . 1 4 0 0 .
  • Page 46 Parameter list for ND 231 B: (factory default setting) Parameter list Description Start character (*); Model of display unit; MM or IN; ND-231 B Unit of measure: MM = 0; INCH = 1; MM = MM = X1 = 0; X2 = 1; X1 ADD. X2 = 2; X1 SUB. X2 = 3; DISPL.
  • Page 47 Parameter list Description X1: OFF=0; FRQ.=1; CONTAMINAT.=2; FRQ+CONT.=3; P45.1 ALARM = FRQ.+ CONT. = X2: OFF=0; FRQ.=1; CONTAMINAT.=2; FRQ+CONT.=3; P45.2 ALARM = FRQ.+ CONT. = BAUD RATE = 9600; (110-38400) RS232 = 9600 BAUD = 9600 LINE FEEDS = 1; (0-99) RS232 = BK LINE Switching limit 1: A1 = 0;...
  • Page 48: Output Format Of The Compensation-Value Table

    Output Format of the Compensation-Value Table A separate compensation-value table is prepared and transmitted for each axis to be corrected. Line: Start Each compensation-value output begins with the start character < * > ( HEX: 0x2A) <CR> <LF> 3 characters Line: Counter model designation Output of model designation and unit of measure N D -...
  • Page 49 Line: Spacing of compensation points Output of distance between compensation points S P A C I 4 <CR><LF> 13 characters 3 char. 6 characters 2 characters Spacing, left-aligned Separator Spacing End of line block right-aligned Line: Datum point Output of datum point for the compensation D A T U M 0 0 0 0 <CR>...
  • Page 50 Compensation-value table for ND 231 B (axis X2): Active compensation Compensation-value table Description: Start character ( * ); Model of display unit; unit of measure (MM or IN); ND-231 B Axis to be corrected, X1 = 0; X2 = 1; AXIS X2 Axis causing the error, X1 = 0;...
  • Page 51: Remote Operation Over The Rs-232-C

    Remote Operation over the RS-232-C/V.24 Interface Sequence of commands Meaning <ESC>T1000<CR> ‘CE+0‘ keys <ESC>T1001<CR> ‘CE+1‘ keys You can operate the display unit remotely over the RS-232-C/ <ESC>T1002<CR> ‘CE+2‘ keys V.24 data interface. The following commands are available on <ESC>T1003<CR> ‘CE+3‘ keys the ND 231 B: <ESC>T1004<CR>...
  • Page 52 Description of RS-232-C/V.24 commands: Output of 14-segment display: The contents displayed are transmitted (also dialogs and error The display unit supports the XON-XOFF protocol when messages). executing commands. As soon as the internal character buffer (100 characters) is full, the display unit sends the control <STX>...
  • Page 53 REF function: Output of software number: Activates or deactivates the REF mode (current REF condition The current software number is transmitted. is changed). <STX> 3 4 9 7 9 7 - 0 4 <CR> <LF> Print String: STX; 10 characters; CR; LF; Output of the current measured value.
  • Page 54: Specifications

    Specifications Housing ND 231 B Noise immunity As per VDE 0843 Parts 2 and 4, Benchtop design, severity 4 cast-metal housing (W · H · D) Protection IP40 according to IEC 529 239 mm · 84.6 mm · 224 mm Encoder inputs For encoders with sinusoidal output Operating temperature 0°...
  • Page 55: Dimensions

    ND 231 B: Dimensions in mm/inches REF 1 SET START PRINT inch < = > MIN ACTL MAX DIFF 33.5 172 ± 0.2 1.37" 6.77" ± .008" 9.41"...
  • Page 56 HEIDENHAIN (G.B.) Limited 200 London Road, Burgess Hill West Sussex RH15 9RD, Great Britain { (014 44) 24 77 11 | (014 44) 87 00 24 SALES & SERVICE: A Tech Authority, Inc. 13745 Stockton Ave. Chino CA 91710 909-614-4522 sales@atechauthority.com...

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