User manual HEIDENHAIN ND 280 8-2010

[. . . ] Operating Instructions ND 280 English (en) 8/2010 ND 280 Screen 1 2 3 4 5 ND 280 Front Panel 7 6 Controls and Displays 1 Status bar Current operating mode: Actual Value, Distance-To-Go. Current display mode for input X1 SCL shown in black: Scaling factor is active. COMP shown in black: Error compensation or axis-error compensation is active for the currently displayed axis Elapsed time of running stopwatch: If the stopwatch is stopped, the box appears dimmed. mm, inch, DEG, DMS or rad: Currently active unit of measure Currently active datum: The ND 280 allows you to work with two different datums. Indicates the soft-key page (soft-key row) you are currently on. 2 3 4 Position display: Current position value (length or angle) Message line for displaying information, errors or warnings. Status display: SET: If you enter a new value during datum setting, the SET symbol will start flashing. REF: The REF symbol is flashing until the reference mark evaluation for the displayed axis has been completed (if an incremental encoder is connected). 5 and 6 1, 2, 3, 4. . . Use the ENTER key to confirm your entry or to return to the previous screen. [. . . ] II. 7): JOB SETUP Press to begin accessing the JOB SETUP parameters (see "Job Setup" on page 27). IMPORT/EXPORT Press this soft key to call the IMPORT or EXPORT soft keys for transmitting the operating parameters (see "Serial data transfer with the Import or Export function" on page 64). Press the NAVIGATION key to move through the pages of menu parameters. To view and change menu parameters, use the UP/ DOWN arrow key to highlight the parameter of interest and press the ENTER key. On the following pages you will find more information on the menu parameters. ND 280 43 II ­ 2 Installation Setup II ­ 2 Installation Setup Setting up the encoder In the ENCODER SETUP form you configure the ND 280 for the connected encoder: The cursor will default to the ENCODER SETUP field upon opening Installation Setup. Select the encoder type by pressing the TYPE soft key: LINEAR: Linear encoder ROTARY: Rotary encoder Press the ENTER key to confirm your selection. The ND automatically enters the measurement signal received in the ENCODER SIGNAL field: NO SIGNAL, 1 Vpp, 11 µApp ENDAT 2. 1 or ENDAT 2. 2. II. 8 Encoder type 44 II Installation, Specifications Incremental linear encoder For linear encoders, cursor to the SIGNAL PERIOD field and toggle the COARSER or FINER soft key to select a predefined encoder signal period, or type in the exact signal period (in µm) desired (see "Encoder Parameters" on page 61). In the REFERENCE MARK field, toggle the REF MARK soft key to select whether the encoder has no reference signal (NONE), a single reference mark (SINGLE) or distance-coded reference marks (CODED/. . . ). For distance-coded reference marks, select the spacing (500, 1000, 2000 or 5000 signal periods). In the COUNT DIRECTION field, select the count direction by pressing the POSITIVE/ NEGATIVE soft key. If the encoder's count direction matches the user's traverse direction, select POSITIVE. In the ERROR MONITOR field, select whether the ND will monitor and display encoder counting and signal errors by pressing the ERROR soft key. In the ERROR MONITOR field, you can select OFF, FREQUENCY, CONTAMINATION or FRQ. +CONTAMINATION. If you set the ERROR MONITOR field to OFF, the ND 280 will ignore encoder errors. Fig. II. 9 Incremental linear encoder form Counting errors are caused by contamination or excessive frequency: Contamination: The signal to the encoder falls below a set limit. Frequency errors: The signal frequency exceeds the set limit. Fig. II. 11 Incremental linear encoder form ND 280 45 II ­ 2 Installation Setup II ­ 2 Installation Setup Incremental angle encoder For rotary encoders, enter the encoder's signal period per revolution (360°) directly in the SIGNAL PERIOD field (see "Encoder Parameters" on page 61). In the REFERENCE MARK field, use the numeric keys to enter the number of reference marks (0 for NONE, 1 for SINGLE, . . . ) per revolution (360°). In the COUNT DIRECTION field, select the count direction by pressing the POSITIVE/ NEGATIVE soft key. If the encoder's count direction matches the user's traverse direction, select POSITIVE. In the ERROR MONITOR field, select whether the ND will monitor and display encoder counting and signal errors by pressing the ERROR soft key. [. . . ] If the ND receives invalid parameter values, it sets the respective operating parameters to the default settings. Example: P01 LINEAR = 3 The value 3 is not allowed. The parameter P01 is set to the default setting: P01 LINEAR = 0 ND 280 79 II ­ 6 Input and Output of Parameter List and Error Compensation Table II ­ 6 Input and Output of Parameter List and Error Compensation Table Output format of the parameter list First line Each parameter list output begins with the start character < # > (HEX: 0x23). # <CR> 1 1 Start character and end of line: 3 characters <LF> Second line Model of position display unit and unit of measure ND 2 8 0 2 2 3 4 Model of display unit, left-aligned: 13 characters Unit of measure: 6 characters End of line: 2 characters DE 3 G <CR> 4 <LF> Subsequent lines for the individual parameters Example: P01 5 5 6 7 8 LI NEAR = 6 7 <CR> 8 <LF> Parameter designation left-aligned and text right-aligned: 19 characters Separator block: 3 characters Parameter value, right-aligned: 13 characters End of line: 2 characters For parameter P98, the parameter value can be more than 13 characters long! Last line Each parameter list output ends with the final character < # > (HEX: 0x23). # <CR> 9 9 Final character and end of line: 3 characters <LF> 80 II Installation, Specifications Example for a parameter list The parameter text is always sent in English. [. . . ]