Virtual DMIS Requirements

Transcription

1 Virtual DMIS Requirements A: File Format The following sheet contains a brief explanation of commands that may be used when writing a Virtual DMIS program. Not all of the following is required but is it is included to allow for customization above and beyond the requirements. VARIABLES The following is an example to declare variables that will be used in the program. These variables are alphabetical and 15 characters in length. DECL/CHAR,15,CURRENTDATE,CURRENTYEAR,CURRENTMONTH,CURRENTDAY DECL/CHAR,15,CURRENTTIME,CURRENTHOUR,CURRENTMINUTE,SAMPLEID The following line declares a long variable to hold a path name. DECL/CHAR,100,SAVEPATH Some other type of variable declarations include: INTEGER NUMBER (NO DECIMAL PLACES): REAL NUMBER: DOUBLE NUMBER: TRUE OR FALSE VARIABLE: A GLOBAL DECLARATION OF AN INTEGER: AN INTEGER ARRAY: DECL/INTGR,VARINTEGER DECL/REAL,VARREALNUMBER DECL/DOUBLE,VARDOUBLENUMBER DECL/BOOL,VARBOOLEAN DECL/GLOBAL,INTGR,VARGLOBALINTEGER DECL/INTGR,VARINTEGERARRAY[5] OUTPUT FORMAT The following determines the output format in Virtual DMIS: V(FORMAT1)=VFORM/NOM,ACT,DEV,AMT V(FORMAT2)=VFORM/DEV,AMT V(FORMAT3)=VFORM/ACT V(FORMAT4)=VFORM/NOM,ACT,DEV V(FORMAT5)=VFORM/NOM,ACT UNIQUE FILE NAMES USING DATE AND TIME Getting the computer system s current data and time is a simple DMIS command: CURRENTDATE=SDATE() CURRENTTIME=STIME() Getting individual elements of the date/time is achieved using the following command. For the SUBSTR, call the variable and define which character position(s) to grab: CURRENTYEAR=SUBSTR(CURRENTDATE,3,4) CURRENTMONTH=SUBSTR(CURRENTDATE,6,7) CURRENTDAY=SUBSTR(CURRENTDATE,9,10)

2 CURRENTHOUR=SUBSTR(CURRENTTIME,1,2) CURRENTMINUTE=SUBSTR(CURRENTTIME,4,5) To create a file name or path use the CONCAT function: SAVEPATH=CONCAT('C:\FILEPATH\',CURRENTYEAR,CURRENTMONTH,CURRENTDAY,'_',$ CURRENTHOUR,CURRENTMINUTE,'.TXT') Note: THE $ SIGN ALLOWS YOU TO BREAK LINES IN THE MIDDLE For Example: IF TODAY IS FEBRUARY 28TH, 2005 AND THE TIME IS 2:30PM THE PREVIOUS WILL CREATE A SAVEPATH OF THE FOLLOWING 'C:\FILEPATH\ _1430.TXT' TO SAVE FILES IT IS A GOOD IDEA TO INCLUDE DATE AND TIME TO MAKE THEM UNIQUE AND EASILY IDENTIFIABLE. SETUP FILE FOR SAVING AND PRINTING The following sets the SAVEPATH for saving a file: DID(DEFLTDID)=DEVICE/STOR, SAVEPATH The file should be opened in OVERWRITE MODE: OPEN/DID(DEFLTDID),FDATA,V(FORMAT1),OUTPUT,OVERWR If you want the file to append data (NOT RECOMMENDED), use the following syntax: OPEN/DID(DEFLTDID),FDATA,V(FORMAT1),OUTPUT,APPEND Select the OUTPUT FORMAT. This command saves and prints the measurement output file: DISPLY/STOR,V(FORMAT1), PRINT,V(FORMAT1) If you do not wish to print the file use the following: DISPLY/STOR,V(FORMAT1) QUERY THE USER FOR JOB INFO You may want to include part information in the file, such as SAMPLE ID, CAVITY ID, etc. To do this, simply ask the user for this information. Enclosed in brackets is a section of code to interact with the user in this example, the section is called ASKSAMPLEID (ASKSAMPLEID) Query the user: TEXT/QUERY,(SAMPLEID),15,AN,L,'ENTER SAMPLE ID' Sometimes you will want to limit the user s response. The following IF THEN statement checks for sample numbers between 1 and 3:

3 IF/(SAMPLEID.EQ.'1') ELSE IF/(SAMPLEID.EQ.'2') ELSE IF/(SAMPLEID.EQ.'3') ELSE ENDIF JUMPTO/(ASKSAMPLEID) ENDIF ENDIF The EQ in the equation stands for EQUAL TO. Other operators include NE (NOT EQUAL TO), LT (LESS THAN), AND GT (GREATER THAN). In this example, if the input is outside the range the program loops back and asks the question again. To put the gathered information in the file or printout us the following: TEXT/OUTFIL, 'SAMPLE: ',SAMPLEID SAVING THE FILE To save a file once the measurement has been added use the following command: CLOSE/DID(DEFLTDID),KEEP END THE PRINT JOB To end the print job, include the next three lines: DMIS/OFF PRINT/FLUSH DMIS/ON The last line of a program should be the END FILE command: ENDFIL B: Column Header Identification Including a column header is good practice for easy identification of what the values represent. The column header only needs to appear once, before the measurements begin. A default column name is included in the import template. If you change the default names or don t include the column header, the template will need to be adapted to match your file format convention.

4 It is recommended that you include a header that identifies the output columns: TEXT/OUTFIL, '' TEXT/OUTFIL, '==============================================================$ =================== ' TEXT/OUTFIL, ' ACT NOM DEV UpTol $ LoTol OTL' TEXT/OUTFIL, '==============================================================$ =================== ' Nom = Nominal Act = Actual Dev = Deviation UpTol = Upper Tolerance LoTol = Lower Tolerance Example: C: Axes Identification Virtual DMIS allows the user to define the Axis ID, using the predefined defaults will help you standardize your measurement reports. All AXIS used will need to be defined in the settings. Axes are listed in the appropriate measurement type. For example, all diameter axes identifiers need to be listed, separated by a comma in the Diameter Axes box (shown below as: Diam, Dia).

5 D: Automatic Balloon Recognition from CMM File It is also recommended to include a header that identifies the balloon id for the measurements: TEXT/OUTFIL, ' ' TEXT/OUTFIL, '[ITEM 12,,, POSITION 0.5m A B C ] For a balloon number to be automatically identified, a comment line for the feature will need to be added that follow this simple comma delimited format: [ITEM ID, AXIS, MEASUREMENT NOTE(optional), SPECIFICATION NOTE(optional)] Examples: [ITEM 3] [ITEM 12,,,TP 0.5m A B C ] [ITEM 12,TP,AT 18.0 DIM. (ITEM 1),TP0.5m Am 2 PLACES] 1. The first location is to identify the item (balloon) number from your drawing. Must be identified with the word item (e.g. ITEM 12). 2. The second location is to identify which axis the item number relates to (e.g. TP). The second location required for Virtual DMIS when more than one axes reported for the same feature. 3. The third location is to identify any notes you want conveyed in your report for the measurement result - i.e. the actual (e.g. AT 18.0 DIM. (ITEM 1). The third location is OPTIONAL. 4. The fourth location is to identify any notes you want conveyed in your report for the specification - i.e. nominal information - plus any GD&T feature control frames you want reported. The fourth location is OPTIONAL. Example 3: Compatible Format with Balloons Note: A period can be used in front of the Balloon identification bracket to carry the balloon id forward.

6 E: Beginning of Measurement in CMM File If you included job information at the top of your CMM output file, it is best practice to ensure there is a blank line separating job information from the beginning of measurement data. Example 4: Blank Line Between Job Information and Measurements F: GDT Bonus in CMM File Virtual DMIS includes any bonus for a position with the position tolerance in the uptol column. For the bonus to be correctly calculated and retrieved from the tolerance, the balloon recognition format must be followed from section D. Any bonus identified in the CMM output file will then be automatically retrieved, and included in the calculations for determining if the position is in or out of tolerance. From the example below, the tolerance of 1.0 and bonus of will be calculated.