siemens 840D Programming Manual

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SINUMERIK

SINUMERIK 840D sl / 828D Job Planning

Programming Manual

Valid for

Control

SINUMERIK 840D sl / 840DE sl SINUMERIK 828D

Software	Version
CNC software	4.5 SP2

03/2013

6FC5398-2BP40-3BA1

Preface

	Flexible NC programming	1
	File and Program
	File and Program	2
	Management	2

	Protection zones	3

	Special motion commands	4
	Coordinate transformations
	Coordinate transformations	5
	(frames)	5

	Transformations	6

	Kinematic chains	7
	Collision avoidance with
	Collision avoidance with	8
	kinematic chains	8

	Tool offsets	9

	Path traversing behavior	10

	Axis couplings	11

	Synchronized actions	12

	Oscillation	13

	Punching and nibbling	14

	Grinding	15

	Additional functions	16
	User stock removal
	User stock removal	17
	programs	17
	Programming cycles
	Programming cycles	18
	externally	18

	Tables	19

	Appendix	A

Legal information

Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken.

WARNING

indicates that death or severe personal injury may result if proper precautions are not taken.

CAUTION

indicates that minor personal injury can result if proper precautions are not taken.

NOTICE

indicates that property damage can result if proper precautions are not taken.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property damage.

Qualified Personnel

The product/system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following:

WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems. The permissible ambient conditions must be complied with. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions.

Siemens AG	Order number: 6FC5398-2BP40-3BA1	Copyright © Siemens AG 1995 - 2013.
Industry Sector	04/2013 Technical data subject to change	All rights reserved
Postfach 48 48
90026 NÜRNBERG
GERMANY

Preface

SINUMERIK documentation

The SINUMERIK documentation is organized in the following categories:

●General documentation

●User documentation

●Manufacturer/service documentation

Additional information

You can find information on the following topics at www.siemens.com/motioncontrol/docu:

●Ordering documentation/overview of documentation

●Additional links to download documents

●Using documentation online (find and search in manuals/information)

Please send any questions about the technical documentation (e.g. suggestions for improvement, corrections) to the following address:

docu.motioncontrol@siemens.com

My Documentation Manager (MDM)

Under the following link you will find information to individually compile OEM-specific machine documentation based on the Siemens content:

www.siemens.com/mdm

Training

For information about the range of training courses, refer under:

●www.siemens.com/sitrain

SITRAIN - Siemens training for products, systems and solutions in automation technology

●www.siemens.com/sinutrain

SinuTrain - training software for SINUMERIK

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Preface

FAQs

You can find Frequently Asked Questions in the Service&Support pages under Product Support. http://support.automation.siemens.com

SINUMERIK

You can find information on SINUMERIK under the following link: www.siemens.com/sinumerik

Target group

This publication is intended for:

●Programmers

●Project engineers

Benefits

With the programming manual, the target group can develop, write, test, and debug programs and software user interfaces.

Standard scope

This Programming Manual describes the functionality afforded by standard functions. Extensions or changes made by the machine tool manufacturer are documented by the machine tool manufacturer.

Other functions not described in this documentation might be executable in the control. This does not, however, represent an obligation to supply such functions with a new control or when servicing.

Further, for the sake of simplicity, this documentation does not contain all detailed information about all types of the product and cannot cover every conceivable case of installation, operation or maintenance.

Technical Support

You will find telephone numbers for other countries for technical support in the Internet under http://www.siemens.com/automation/service&support

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Preface

Information on structure and contents

"Fundamentals" and "Job planning" Programming Manual

The description of the NC programming is divided into two manuals:

1.Fundamentals

The "Fundamentals" Programming Manual is intended for use by skilled machine operators with the appropriate expertise in drilling, milling and turning operations. Simple programming examples are used to explain the commands and statements which are also defined according to DIN 66025.

2.Job planning

This "Job planning" Programming Manual is intended for use by technicians with in-depth, comprehensive programming knowledge. By virtue of a special programming language, the SINUMERIK control enables the user to program complex workpiece programs (e.g. for free-form surfaces, channel coordination, ...) and makes programming of complicated operations easy for technologists.

Availability of the described NC language elements

All NC language elements described in the manual are available for the SINUMERIK 840D sl. The availability regarding SINUMERIK 828D can be found in table "Operations: Availability for SINUMERIK 828D (Page 778)".

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Preface

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	Preface	......................................................................................................................................................	3
1	Flexible ........................................................................................................................NC programming		17
	1.1 ......................................................................................................................................	Variables	17
	1.1.1 ............................................................................................................................	System variable	17
	1.1.2 .................................................................	Predefined user variables: Arithmetic parameters (R)	20
	1.1.3 ....................................................................................	Predefined user variables: Link variables	21
	1.1.4 ................................................................................................	Definition of user variables (DEF)	24
	1.1.5 .........	Redefinition of system variables, user variables, and NC language commands (REDEF)	29
	1.1.6 .........................................................................................................	Attribute: Initialization value	32
	1.1.7 ...................................................................................................	Attribute: Limit values (LLI, ULI)	35
	1.1.8 ......................................................................................................	Attribute: Physical unit (PHU)	37
	1.1.9 ..........................................	Attribute: Access rights (APR, APW, APRP, APWP, APRB, APWB)	39
	1.1.10 .........................................................................	Overview of definable and redefinable attributes	44
	1.1.11 .................................................	Definition and initialization of array variables (DEF, SET, REP)	45
	1.1.12 .................	Definition and initialization of array variables (DEF, SET, REP): Further Information	49
	1.1.13 ....................................................................................................................................	Data types	52
	1.1.14 .................................................................	Explicit data type conversions (AXTOINT, INTTOAX)	53
	1.1.15 ......................................................................................	Check availability of a variable (ISVAR)	54

1.1.16Read attribute values / data type (GETVARPHU, GETVARAP, GETVARLIM,

	GETVARDFT, GETVARTYP)......................................................................................................	56
1.2	Indirect programming...................................................................................................................	61
1.2.1	Indirectly programming addresses...............................................................................................	61
1.2.2	Indirectly programming G codes..................................................................................................	64
1.2.3	Indirectly programming position attributes (GP) ..........................................................................	65
1.2.4	Indirectly programming part program lines (EXECSTRING).......................................................	68
1.3	Arithmetic functions......................................................................................................................	69
1.4	Comparison and logic operations................................................................................................	71
1.5	Precision correction on comparison errors (TRUNC)..................................................................	73
1.6	Variable minimum, maximum and range (MINVAL, MAXVAL and BOUND) ..............................	74
1.7	Priority of the operations..............................................................................................................	76
1.8	Possible type conversions ...........................................................................................................	77
1.9	String operations..........................................................................................................................	78
1.9.1	Type conversion to STRING (AXSTRING)..................................................................................	78
1.9.2	Type conversion from STRING (NUMBER, ISNUMBER, AXNAME)..........................................	79
1.9.3	Concatenation of strings (<<).......................................................................................................	81
1.9.4	Conversion to lower/upper case letters (TOLOWER, TOUPPER)..............................................	82
1.9.5	Determine length of string (STRLEN)..........................................................................................	83
1.9.6	Search for character/string in the string (INDEX, RINDEX, MINDEX, MATCH)..........................	83
1.9.7	Selection of a substring (SUBSTR) .............................................................................................	85
1.9.8	Reading and writing of individual characters...............................................................................	85
1.9.9	Formatting a string (SPRINT) ......................................................................................................	87
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1.10	Program jumps and branches.....................................................................................................		96
1.10.1	Return jump to the start of the program (GOTOS)......................................................................		96
1.10.2	Program jumps to jump markers (GOTOB, GOTOF, GOTO, GOTOC)......................................		97
1.10.3	Program branch (CASE	... OF ... DEFAULT ...)........................................................................	100
1.11	Repeat program section (REPEAT, REPEATB, ENDLABEL, P)..............................................		102
1.12	Check structures.......................................................................................................................		108
1.12.1	Conditional statement and branch (IF, ELSE, ENDIF) .............................................................		110
1.12.2	Continuous program loop (LOOP, ENDLOOP).........................................................................		111
1.12.3	Count loop (FOR ... TO ...	, ENDFOR) ......................................................................................	112
1.12.4	Program loop with condition at start of loop (WHILE, ENDWHILE)..........................................		114
1.12.5	Program loop with condition at the end of the loop (REPEAT, UNTIL)....................................		115
1.12.6	Program example with nested check structures.......................................................................		115
1.13	Program coordination (INIT, START, WAITM, WAITMC, WAITE, SETM, CLEARM)..............		116
1.14	Interrupt routine (ASUB)............................................................................................................		121
1.14.1	Function of an interrupt routine.................................................................................................		121
1.14.2	Creating an interrupt routine.....................................................................................................		123
1.14.3	Assign and start interrupt routine (SETINT, PRIO, BLSYNC) ..................................................		124
1.14.4	Deactivating/reactivating the assignment of an interrupt routine (DISABLE, ENABLE)...........		125
1.14.5	Delete assignment of interrupt routine (CLRINT) .....................................................................		126
1.14.6	Fast retraction from the contour (SETINT LIFTFAST, ALF).....................................................		127
1.14.7	Traversing direction for fast retraction from the contour...........................................................		129
1.14.8	Motion sequence for interrupt routines .....................................................................................		132
1.15	Axis replacement, spindle replacement (RELEASE, GET, GETD)...........................................		132
1.16	Transfer axis to another channel (AXTOCHAN).......................................................................		137
1.17	Activate machine data (NEWCONF).........................................................................................		138
1.18	Write file (WRITE).....................................................................................................................		139
1.19	Delete file (DELETE).................................................................................................................		144
1.20	Read lines in the file (READ)....................................................................................................		146
1.21	Check for presence of file (ISFILE)...........................................................................................		148
1.22	Read out file information (FILEDATE, FILETIME, FILESIZE, FILESTAT, FILEINFO).............		150
1.23	Roundup (ROUNDUP)..............................................................................................................		153
1.24	Subprogram technique..............................................................................................................		154
1.24.1	General information...................................................................................................................		154
1.24.1.1	Subprogram ..............................................................................................................................		154
1.24.1.2	Subprogram names...................................................................................................................		155
1.24.1.3	Nesting of subprograms............................................................................................................		156
1.24.1.4	Search path...............................................................................................................................		157
1.24.1.5	Formal and actual parameters..................................................................................................		158
1.24.1.6	Parameter transfer....................................................................................................................		159
1.24.2	Definition of a subprogram........................................................................................................		161
1.24.2.1	Subprogram without parameter transfer...................................................................................		161
1.24.2.2	Subprogram with call-by-value parameter transfer (PROC).....................................................		162
1.24.2.3	Subprogram with call-by-reference parameter transfer (PROC, VAR).....................................		163
1.24.2.4	Save modal G functions (SAVE)...............................................................................................		166
1.24.2.5	Suppress single block execution (SBLOF, SBLON).................................................................		167
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	1.24.2.6	Suppress current block display (DISPLOF, DISPLON, ACTBLOCNO).....................................	172
	1.24.2.7	Identifying subprograms with preparation (PREPRO)...............................................................	175
	1.24.2.8	Subprogram return M17.............................................................................................................	176
	1.24.2.9	RET subprogram return.............................................................................................................	177
	1.24.2.10	Parameterizable subprogram return jump (RET ...) .............................................................	178
	1.24.3	Subprogram call.........................................................................................................................	184
	1.24.3.1	Subprogram call without parameter transfer..............................................................................	184
	1.24.3.2	Subprogram call with parameter transfer (EXTERN).................................................................	187
	1.24.3.3	Number of program repetitions (P)............................................................................................	189
	1.24.3.4	Modal subprogram call (MCALL)...............................................................................................	191
	1.24.3.5	Indirect subprogram call (CALL)................................................................................................	193
	1.24.3.6	Indirect subprogram call with specification of the calling program part (CALL BLOCK ...
		TO ...).........................................................................................................................................	194
	1.24.3.7	Indirect call of a program programmed in ISO language (ISOCALL)........................................	195
	1.24.3.8	Call subprogram with path specification and parameters (PCALL)...........................................	196
	1.24.3.9	Extend search path for subprogram calls (CALLPATH)............................................................	197
	1.24.3.10 Execute external subprogram (840D sl) (EXTCALL)............................................................		198
	1.24.3.11 Execute external subprogram (828D) (EXTCALL)...............................................................		202
	1.25	Macro technique (DEFINE ... AS)..............................................................................................	205
2	File and Program Management .............................................................................................................		209
	2.1	Program memory.......................................................................................................................	209
	2.2	Working memory (CHANDATA, COMPLETE, INITIAL)............................................................	213
3	Protection zones....................................................................................................................................		217
	3.1	Defining the protection zones (CPROTDEF, NPROTDEF).......................................................	217
	3.2	Activating/deactivating protection zones (CPROT, NPROT).....................................................	220

3.3Checking for protection zone violation, working area limitation and software limit switches

		(CALCPOSI)...............................................................................................................................	224
4	Special motion commands.....................................................................................................................		229
	4.1	Approaching coded positions (CAC, CIC, CDC, CACP, CACN)...............................................	229

4.2Spline interpolation (ASPLINE, BSPLINE, CSPLINE, BAUTO, BNAT, BTAN, EAUTO,

	ENAT, ETAN, PW, SD, PL) .......................................................................................................	230
4.3	Spline group (SPLINEPATH).....................................................................................................	240
4.4	NC block compression (COMPON, COMPCURV, COMPCAD, COMPOF)..............................	241
4.5	Polynomial interpolation (POLY, POLYPATH, PO, PL).............................................................	244
4.6	Settable path reference (SPATH, UPATH)................................................................................	250
4.7	Measuring with touch-trigger probe (MEAS, MEAW)................................................................	253
4.8	Axial measurement (MEASA, MEAWA, MEAC) (option)...........................................................	256
4.9	Special functions for OEM users (OMA1 ... OMA5, OEMIPO1, OEMIPO2, G810 ... G829).....	266
4.10	Feedrate reduction with corner deceleration (FENDNORM, G62, G621).................................	267

4.11Programmable end of motion criteria (FINEA, COARSEA, IPOENDA, IPOBRKA,

ADISPOSA)................................................................................................................................	268
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5	Coordinate transformations (frames) .....................................................................................................		271
	5.1	Coordinate transformation via frame variables.........................................................................	271
	5.1.1	Predefined frame variable ($P_IFRAME, $P_BFRAME, $P_PFRAME, $P_ACTFRAME).......	273
	5.2	Frame variables / assigning values to frames...........................................................................	278
	5.2.1	Assigning direct values (axis value, angle, scale) ....................................................................	278
	5.2.2	Reading and changing frame components (TR, FI, RT, SC, MI)..............................................	280
	5.2.3	Linking complete frames...........................................................................................................	282
	5.2.4	Defining new frames (DEF FRAME).........................................................................................	283
	5.3	Coarse and fine offsets (CFINE, CTRANS)..............................................................................	284
	5.4	External zero offset...................................................................................................................	286
	5.5	Preset offset with PRESETON..................................................................................................	287
	5.6	Frame calculation from three measuring points in space (MEAFRAME).................................	288
	5.7	NCU global frames....................................................................................................................	292
	5.7.1	Channel-specific frames ($P_CHBFR, $P_UBFR)...................................................................	293
	5.7.2	Frames active in the channel....................................................................................................	294
6	Transformations.....................................................................................................................................		299
	6.1	General programming of transformation types.........................................................................	299
	6.1.1	Orientation movements for transformations..............................................................................	301
	6.1.2	Overview of orientation transformation TRAORI.......................................................................	305
	6.2	Three, four and five axis transformation (TRAORI)..................................................................	307
	6.2.1	General relationships of universal tool head.............................................................................	307
	6.2.2	Three, four and five axis transformation (TRAORI)..................................................................	310
	6.2.3	Variants of orientation programming and initial setting (ORIRESET).......................................	311
	6.2.4	Programming the tool orientation (A..., B..., C..., LEAD, TILT).................................................	313
	6.2.5	Face milling (A4, B4, C4, A5, B5, C5).......................................................................................	319
	6.2.6	Reference of the orientation axes (ORIWKS, ORIMKS):..........................................................	321

6.2.7Programming orientation axes (ORIAXES, ORIVECT, ORIEULER, ORIRPY, ORIRPY2,

ORIVIRT1, ORIVIRT2)..............................................................................................................

323

6.2.8Orientation programming along the peripheral surface of a taper (ORIPLANE,

ORICONCW, ORICONCCW, ORICONTO, ORICONIO)..........................................................

326

6.2.9Specification of orientation for two contact points (ORICURVE, PO[XH]=, PO[YH]=,

	PO[ZH]=)...................................................................................................................................	329
6.3	Orientation polynomials (PO[angle], PO[coordinate])...............................................................	331
6.4	Rotations of the tool orientation (ORIROTA, ORIROTR, ORIROTT, ORIROTC, THETA).......	333
6.5	Orientations relative to the path................................................................................................	336
6.5.1	Orientation types relative to the path........................................................................................	336

6.5.2Rotation of the tool orientation relative to the path (ORIPATH, ORIPATHS, angle of

	rotation).....................................................................................................................................	337
6.5.3	Interpolation of the tool rotation relative to the path (ORIROTC, THETA)................................	339
6.5.4	Smoothing of orientation characteristic (ORIPATHS A8=, B8=, C8=)......................................	341
6.6	Compression of the orientation (COMPON, COMPCURV, COMPCAD)..................................	342
6.7	Smoothing the orientation characteristic (ORISON, ORISOF).................................................	344
6.8	Kinematic transformation ..........................................................................................................	347
6.8.1	Milling on turned parts (TRANSMIT):........................................................................................	347
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	6.8.2	Cylinder surface transformation (TRACYL)...............................................................................	349
	6.8.3	Inclined axis (TRAANG).............................................................................................................	357
	6.8.4	Inclined axis programming (G5, G7)..........................................................................................	360
	6.9	Cartesian PTP travel..................................................................................................................	362
	6.9.1	PTP for TRANSMIT ...................................................................................................................	366
	6.10	Constraints when selecting a transformation.............................................................................	370
	6.11	Deselecting a transformation (TRAFOOF) ................................................................................	371
	6.12	Chained transformations (TRACON, TRAFOOF)......................................................................	371
7	Kinematic chains....................................................................................................................................		375
	7.1	Deletion of components (DELOBJ)............................................................................................	375
	7.2	Index determination by means of names (NAMETOINT)..........................................................	377
8	Collision avoidance with kinematic chains.............................................................................................		379
	8.1	Check for collision pair (COLLPAIR) .........................................................................................	379
	8.2	Requesting a recalculation of the collision model (PROTA)......................................................	380
	8.3	Setting the protection zone status (PROTS)..............................................................................	382
	8.4	Determining the clearance of two protection zones (PROTD)...................................................	383
9	Tool offsets............................................................................................................................................		385
	9.1	Offset memory............................................................................................................................	385
	9.2	Additive offsets...........................................................................................................................	388
	9.2.1	Selecting additive offsets (DL)...................................................................................................	388
	9.2.2	Specify wear and setup values ($TC_SCPxy[t,d], $TC_ECPxy[t,d]).........................................	389
	9.2.3	Delete additive offsets (DELDL).................................................................................................	390
	9.3	Special handling of tool offsets..................................................................................................	391
	9.3.1	Mirroring of tool lengths .............................................................................................................	393
	9.3.2	Wear sign evaluation .................................................................................................................	394

9.3.3Coordinate system of the active machining operation (TOWSTD, TOWMCS, TOWWCS,

	TOWBCS, TOWTCS, TOWKCS)...............................................................................................	395
9.3.4	Tool length and plane change....................................................................................................	398
9.4	Online tool offset (PUTFTOCF, FCTDEF, PUTFTOC, FTOCON, FTOCOF)............................	399
9.5	Activate 3D tool offsets (CUT3DC..., CUT3DF...)......................................................................	404
9.5.1	Activating 3D tool offsets (CUT3DC, CUT3DF, CUT3DFS, CUT3DFF, ISD)............................	404
9.5.2	3D tool offset peripheral milling, face milling .............................................................................	406
9.5.3	3D tool offset Tool shapes and tool data for face milling...........................................................	408
9.5.4	3D tool offset Offset on the path, path curvature, insertion depth (CUT3DC, ISD)...................	409
9.5.5	3D tool offset Inside/outside corners and intersection procedure (G450/G451) .......................	412
9.5.6	3D tool offset 3D circumferential milling with limitation surfaces...............................................	413
9.5.7	3D tool offset: Taking into consideration a limitation surface (CUT3DCC, CUT3DCCD)..........	414
9.6	Tool orientation (ORIC, ORID, OSOF, OSC, OSS, OSSE, ORIS, OSD, OST).........................	418
9.7	Free assignment of D numbers, cutting edge numbers.............................................................	424
9.7.1	Free assignment of D numbers, cutting edge numbers (CE address)......................................	424
9.7.2	Free assignment of D numbers: Checking D numbers (CHKDNO)...........................................	424
9.7.3	Free assignment of D numbers: Rename D numbers (GETDNO, SETDNO)...........................	425
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9.7.4Free assignment of D numbers: Determine T number to the specified D number

	(GETACTTD) ............................................................................................................................	426
9.7.5	Free assignment of D numbers: Invalidate D numbers (DZERO) ............................................	427
9.8	Toolholder kinematics...............................................................................................................	427

9.9Tool length compensation for orientable toolholders (TCARR, TCOABS, TCOFR,

	TCOFRX, TCOFRY, TCOFRZ).................................................................................................	433
9.10	Online tool length compensation (TOFFON, TOFFOF)............................................................	436
9.11	Cutting data modification for tools that can be rotated (CUTMOD)..........................................	439
10 Path traversing behavior........................................................................................................................		445
10.1	Tangential control (TANG, TANGON, TANGOF, TLIFT, TANGDEL).......................................	445
10.2	Feedrate characteristic (FNORM, FLIN, FCUB, FPO)..............................................................	452
10.3	Acceleration behavior................................................................................................................	457
10.3.1	Acceleration mode (BRISK, BRISKA, SOFT, SOFTA, DRIVE, DRIVEA) ................................	457
10.3.2	Influence of acceleration on following axes (VELOLIMA, ACCLIMA, JERKLIMA)...................	459

10.3.3Activation of technology-specific dynamic values (DYNNORM, DYNPOS, DYNROUGH,

	DYNSEMIFIN, DYNFINISH) .....................................................................................................	461
10.4	Traversing with feedforward control (FFWON, FFWOF)..........................................................	463
10.5	Programmable contour accuracy (CPRECON, CPRECOF).....................................................	464

10.6Program sequence with preprocessing memory (STOPFIFO, STARTFIFO, FIFOCTRL,

	STOPRE)..................................................................................................................................	466
10.7	Program sections that can be conditionally interrupted (DELAYFSTON, DELAYFSTOF).......	469
10.8	Prevent program position for SERUPRO (IPTRLOCK, IPTRUNLOCK)...................................	474

10.9Repositioning to the contour (REPOSA, REPOSL, REPOSQ, REPOSQA, REPOSH,

	REPOSHA, DISR, DISPR, RMIBL, RMBBL, RMEBL, RMNBL)...............................................	476
10.10	Influencing the motion control...................................................................................................	484
10.10.1	Percentage jerk correction (JERKLIM) .....................................................................................	484
10.10.2	Percentage velocity correction (VELOLIM)...............................................................................	486
10.10.3	Program example for JERKLIM and VELOLIM.........................................................................	488
10.11	Programmable contour/orientation tolerance (CTOL, OTOL, ATOL).......................................	488
10.12	Tolerance for G0 motion (STOLF)............................................................................................	492
10.13	Block change behavior with active coupling (CPBC)................................................................	494
11 Axis couplings........................................................................................................................................		495
11.1	Coupled motion (TRAILON, TRAILOF).....................................................................................	495
11.2	Curve tables (CTAB).................................................................................................................	500
11.2.1	Define curve tables (CTABDEF, CATBEND)............................................................................	501
11.2.2	Check for presence of curve table (CTABEXISTS)..................................................................	507
11.2.3	Delete curve tables (CTABDEL)...............................................................................................	507
11.2.4	Locking curve tables to prevent deletion and overwriting (CTABLOCK, CTABUNLOCK).......	509

11.2.5Curve tables: Determine table properties (CTABID, CTABISLOCK, CTABMEMTYP,

CTABPERIOD)..........................................................................................................................

510

11.2.6Read curve table values (CTABTSV, CTABTEV, CTABTSP, CTABTEP, CTABSSV,

	CTABSEV, CTAB, CTABINV, CTABTMIN, CTABTMAX)	......................................................... 512
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11.2.7Curve tables: Check use of resources (CTABNO, CTABNOMEM, CTABFNO, CTABSEGID, CTABSEG, CTABFSEG, CTABMSEG, CTABPOLID, CTABPOL,

	CTABFPOL, CTABMPOL).........................................................................................................	517
11.3	Axial master value coupling (LEADON, LEADOF) ....................................................................	518
11.4	Electronic gear (EG) ..................................................................................................................	523
11.4.1	Defining an electronic gear (EGDEF)........................................................................................	524
11.4.2	Switch-in the electronic gearbox (EGON, EGONSYN, EGONSYNE).......................................	525
11.4.3	Switching-in the electronic gearbox (EGOFS, EGOFC)............................................................	529
11.4.4	Deleting the definition of an electronic gear (EGDEL)...............................................................	530
11.4.5	Rotational feedrate (G95) / electronic gear (FPR).....................................................................	530
11.5	Synchronous spindle..................................................................................................................	531

11.5.1Synchronous spindle: Programming (COUPDEF, COUPDEL, COUPON, COUPONC,

		COUPOF, COUPOFS, COUPRES, WAITC).............................................................................	531
	11.6	Generic coupling (CP...).............................................................................................................	541
	11.7	Master/slave coupling (MASLDEF, MASLDEL, MASLON, MASLOF, MASLOFS)...................	549
12	Synchronized actions.............................................................................................................................		553
	12.1	Definition of a synchronized action............................................................................................	553
13	Oscillation..............................................................................................................................................		555

13.1Asynchronous oscillation (OS, OSP1, OSP2, OST1, OST2, OSCTRL, OSNSC, OSE,

		OSB) ..........................................................................................................................................	555
	13.2	Oscillation controlled by synchronized actions (OSCILL)..........................................................	560
14	Punching and nibbling ...........................................................................................................................		569
	14.1	Activation, deactivation..............................................................................................................	569

14.1.1Punching and nibbling on or off (SPOF, SON, PON, SONS, PONS, PDELAYON,

		PDELAYOF, PUNCHACC) ........................................................................................................	569
	14.2	Automatic path segmentation ....................................................................................................	574
	14.2.1	Path segmentation for path axes ...............................................................................................	577
	14.2.2	Path segmentation for single axes .............................................................................................	579
15	Grinding	.................................................................................................................................................	581
	15.1	Grinding - specific tool monitoring in the part program (TMON, TMOF) ......................................	581
16	Additional ................................................................................................................................functions		583
	16.1 .................	Axis functions (AXNAME, AX, SPI, AXTOSPI, ISAXIS, AXSTRING, MODAXVAL)	583
	16.2 ......................................................................................	Replaceable geometry axes (GEOAX)	585
	16.3 ..........................................................	Axis container (AXCTSWE, AXCTSWED, AXCTSWEC)	590
	16.4 .....................................................................................	Wait for valid axis position (WAITENC)	592
	16.5 ..............................................................	Programmable parameter set changeover (SCPARA)	593
	16.6 ...................................................................	Check scope of NC language present (STRINGIS)	594
	16.7 ......................................................	Interactively call the window from the part program (MMC)	598
	16.8 ....................................................................................................	Program runtime/part counter	600
	16.8.1 ..................................................................................	Program runtime/part counter (overview)	600
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16.8.2	Program runtime .......................................................................................................................	600
16.8.3	Workpiece counter....................................................................................................................	604
16.9	Process DataShare - output to an external device/file (EXTOPEN, WRITE, EXTCLOSE)......	605
16.10	Alarms (SETAL)........................................................................................................................	614
16.11	Extended stop and retract (ESR)..............................................................................................	616
16.11.1	NC-controlled ESR....................................................................................................................	617
16.11.1.1 NC-controlled retraction (POLF, POLFA, POLFMASK, POLFMLIN) ..................................		617
16.11.1.2	NC-controlled stopping ........................................................................................................	621
16.11.2	Drive-integrated ESR................................................................................................................	622
16.11.2.1 Configuring drive-integrated stopping (ESRS).....................................................................		622
16.11.2.2 Configuring drive-integrated retraction (ESRS)...................................................................		623
17 User stock removal programs................................................................................................................		625
17.1	Supporting functions for stock removal.....................................................................................	625
17.2	Generate contour table (CONTPRON).....................................................................................	626
17.3	Generate coded contour table (CONTDCON)..........................................................................	632
17.4	Determine point of intersection between two contour elements (INTERSEC) .........................	635
17.5	Execute the contour elements of a table block-by-block (EXECTAB)......................................	637
17.6	Calculate circle data (CALCDAT) .............................................................................................	638
17.7	Deactivate contour preparation (EXECUTE) ............................................................................	640
18 Programming cycles externally..............................................................................................................		641
18.1	Technology cycles.....................................................................................................................	641
18.1.1	Introduction ...............................................................................................................................	641
18.1.2	Drilling, centering - CYCLE81...................................................................................................	642
18.1.3	Drilling, counterboring - CYCLE82............................................................................................	643
18.1.4	Reaming - CYCLE85.................................................................................................................	644
18.1.5	Deep-hole drilling - CYCLE83...................................................................................................	645
18.1.6	Boring - CYCLE86.....................................................................................................................	648
18.1.7	Tapping without compensating chuck - CYCLE84 ...................................................................	649
18.1.8	Tapping with compensating chuck - CYCLE840.......................................................................	652
18.1.9	Thread milling - CYCLE78 ........................................................................................................	654
18.1.10	Freely programmable positions - CYCLE802 ...........................................................................	656
18.1.11	Row of holes - HOLES1............................................................................................................	657
18.1.12	Grid or frame - CYCLE801........................................................................................................	658
18.1.13	Circle of holes - HOLES2..........................................................................................................	659
18.1.14	Face milling - CYCLE61............................................................................................................	661
18.1.15	Milling a rectangular pocket - POCKET3..................................................................................	662
18.1.16	Milling a circular pocket - POCKET4.........................................................................................	665
18.1.17	Rectangular spigot milling - CYCLE76......................................................................................	667
18.1.18	Circular spigot milling - CYCLE77.............................................................................................	669
18.1.19	Multiple-edge - CYCLE79 .........................................................................................................	671
18.1.20	Longitudinal slot - SLOT1..........................................................................................................	673
18.1.21	Circumferential slot - SLOT2.....................................................................................................	675
18.1.22	Mill open slot - CYCLE899........................................................................................................	677
18.1.23	Elongated hole - LONGHOLE...................................................................................................	679
18.1.24	Thread milling - CYCLE70 ........................................................................................................	681
18.1.25	Engraving cycle - CYCLE60......................................................................................................	683
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	18.1.26	Contour call - CYCLE62.............................................................................................................	685
	18.1.27	Path milling - CYCLE72.............................................................................................................	685
	18.1.28	Predrilling a contour pocket - CYCLE64....................................................................................	688
	18.1.29	Milling a contour pocket - CYCLE63..........................................................................................	689
	18.1.30	Stock removal - CYCLE951.......................................................................................................	692
	18.1.31	Groove - CYCLE930..................................................................................................................	694
	18.1.32	Undercut forms - CYCLE940.....................................................................................................	696
	18.1.33	Thread turning - CYCLE99 ........................................................................................................	699
	18.1.34	Thread chain - CYCLE98...........................................................................................................	702
	18.1.35	Cut-off - CYCLE92.....................................................................................................................	705
	18.1.36	Contour cutting - CYCLE95 .......................................................................................................	706
	18.1.37	Contour grooving - CYCLE952..................................................................................................	708
	18.1.38	Swiveling - CYCLE800...............................................................................................................	712
	18.1.39	High Speed Settings - CYCLE832.............................................................................................	714
19	Tables....................................................................................................................................................		717
	19.1	Operations..................................................................................................................................	717
	19.2	Operations: Availability for SINUMERIK 828D ..........................................................................	778
	19.3	Currently set language in the HMI.............................................................................................	802
A	Appendix.....................................................	...........................................................................................	803
	A.1	List of abbreviations...................................................................................................................	803
	A.2	Documentation overview............................................................................................................	812
	Glossary ................................................................................................................................................		813
	Index......................................................................................................................................................		835

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1.1Variables

The use of variables, especially in conjunction with arithmetic functions and check structures, enables part programs and cycles to be set up with extremely high levels of flexibility. The system provides three different types of variables.

●System variables

System variables are variables with a fixed predefined meaning; they are defined in the system and made available to the user. They are also read and written by the system software. Example: Machine data

The meaning of a system variable is permanently set by the system. However, minor modifications can be made to the properties by the user in the form of redefinition. See "Redefinition of system variables, user variables, and NC language commands (REDEF) (Page 29)"

●User variables

User variables are variables whose meaning is not known to the system; they are not evaluated by the system. The meaning is defined exclusively by the user.

User variables are subdivided into:

–Predefined user variables

Predefined user variables are variables which have already been defined in the system and whose number simply has to be parameterized by the user via specific machine data. The user can make significant changes to the properties of these variables. See "Redefinition of system variables, user variables, and NC language commands (REDEF) (Page 29)".

–User-defined variables

User-defined variables are variables which are defined exclusively by the user and are not created by the system until runtime. Their number, data type, visibility, and all other properties are defined exclusively by the user.

See "Definition of user variables (DEF) (Page 24)"

1.1.1System variable

System variables are variables which are predefined in the system and enable access to the current parameter settings of the control, as well as to machine, control, and process states, in part programs and cycles.

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1.1 Variables

Preprocessing variables

Preprocessing variables are system variables that are read and written in the context of preprocessing; in other words, at the point in time at which the part program block in which the system variable is programmed is interpreted. Preprocessing variables do not trigger preprocessing stops.

Main run variables

Main run variables are system variables which are read and written in the context of the main run; in other words at the point in time at which the part program block in which the system variable is programmed is executed. The following are main run variables:

●System variables which can be programmed in synchronized actions (read/write)

●System variables which can be programmed in the part program and trigger preprocessing stops (read/write)

●System variables which can be programmed in the part program and whose value is calculated during preprocessing but not written until the main run (main run synchronized: write only)

Prefix system

In order that they can be specifically identified, the names of system variables are usually preceded by a prefix comprising the $ sign followed by one or two letters and an underscore.

	$ + 1st letter	Meaning: Data type
	System variables which are read/written during preprocessing
	$M	Machine data 1)
	$S	Setting data, protection zones 1)
	$T	Tool management data
	$P	Programmed values
	$C	Cycle variables of ISO envelope cycles
	$O	Option data
	R	R-parameters (arithmetic parameters) 2)
	System variables which are read/written during the main run
	$$M	Machine data 1)
	$$S	Setting data 1)
	$A	Current main run data
	$V	Servo data
	$R	R-parameters (arithmetic parameters) 2)
	1) Whether machine and setting data is treated as preprocessing or main run variables depends on
	whether they are written with one or two $ characters. The notation is freely selectable for the specific
	application.
	2) When an R-parameter is used in the part program/cycle as a preprocessing variable, the prefix is
	omitted, e.g. R10. When it is used in a synchronized action as a main run variable, a $ sign is written
	as a prefix, e.g. $R10.
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1.1 Variables

2nd letter

Meaning: Visibility

NNCK-global variable (NCK)

CChannel-specific variable (Channel)

AAxis-specific variable (Axis)

Supplementary conditions

Exceptions in the prefix system

The following system of variables deviate from the prefix system specified above:

●$TC_...: Here, the 2nd letter C does not refer to channel-specific system variables but to toolholder-specific system variables (TC= tool carrier).

●$P_ ...: Channel-specific system variables

Use of machine and setting data in synchronized actions

When machine and setting data is used in synchronized actions, the prefix can be used to define whether the machine or setting data will be read/written synchronous to the preprocessing run or the main run.

If the data remains unchanged during machining, it can be read synchronous to the preprocessing run. For this purpose, the machine or setting data prefix is written with a $ sign:

ID=1 WHENEVER $AA_IM[z] < $SA_OSCILL_REVERSE_POS2[Z]–6 DO $AA_OVR[X]=0

If the data changes during machining, it must be read/written synchronous to the main run. For this purpose, the machine or setting data prefix is written with two $ signs:

ID=1 WHENEVER $AA_IM[z] < $$SA_OSCILL_REVERSE_POS2[Z]–6 DO $AA_OVR[X]=0

Note

Writing machine data

When writing an item of machine or setting data, it is important to ensure that the access level which is active when the part program/cycle is executed permits write access and that the data is set to take "IMMEDIATE" effect.

References

A list of the properties of all system variables appears in:

Parameter Manual, System Variables

1.1.2Predefined user variables: Arithmetic parameters (R)

Function

Arithmetic parameters or R parameters are predefined user variables with the designation R, defined as an array of the REAL data type. For historical reasons, notation both with array index, e.g. R[10], and without array index, e.g. R10, is permitted for R parameters.

When using synchronized actions, the $ sign must be included as a prefix, e.g. $R10.

Syntax

When used as a preprocessing variable:

R<n>

R[<expression>]

When used as a main run variable: $R<n>

$R[<expression>]

Meaning

R:	Identifier when used as a preprocessing variable, e.g. in the part program
$R:	Identifier when used as a main run variable, e.g. in synchronized actions
	Type:	REAL
	Range of values: For a non-exponential notation:
		± (0.000 0001 ... 9999 9999)
		Note:
		A maximum of 8 decimal places are permitted.
		For an exponential notation:
		± (110-300 ... 110+300)
		Note:
		Notation: <Mantisse>EX<exponent> e.g. 8.2EX-3
		A maximum of 10 characters are permitted including
		sign and decimal point.
<n>:	Number of the R parameter
	Type:	INT
	Range of values: 0 - MAX_INDEX
		Note
		MAX_INDEX is calculated from the parameterized number
		of R-parameters:
		MAX_INDEX = (MD28050 $MN_MM_NUM_R_PARAM) - 1
<expression>:	Array index
	Any expression can be used as an array index, as long as the result of the
	expression can be converted to the INT data type (INT, REAL, BOOL,
	CHAR).
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Example

Assignments to R-parameters and use of R-parameters in mathematical functions:

Program code	Comment
R0=3.5678	;	Assignment in	preprocessing
R[1]=-37.3	;	Assignment in	preprocessing
R3=-7	;	Assignment in	preprocessing
$R4=-0.1EX-5	;	Assignment in	main run: R4 = -0.1 * 10^-5
$R[6]=1.874EX8	;	Assignment in	main run: R6 = 1.874 * 10^8
R7=SIN(25.3)	;	Assignment in	preprocessing
R[R2]=R10	;	Indirect addressing using R-parameter
R[(R1+R2)*R3]=5	; Indirect addressing using math. expression
X=(R1+R2)	;	Traverse axis	X to the position resulting from the
		sum of R1 and	R2
Z=SQRT(R1R1+R2R2)	;	Traverse axis	Z to the square root position (R1^2 +
		R2^2)

1.1.3Predefined user variables: Link variables

Function

Link variables can be used in the context of the "NCU-Link" function for cyclic data exchange between NCUs which are linked on a network. They facilitate data-format-specific access to the link variables memory. The link variables memory is defined both in terms of size and data structure on a system-specific basis by the user/machine manufacturer.

Link variables are system-global user variables which can be read and written in part programs and cycles by all NCUs involved in a link if link communication has been configured. Unlike global user variables (GUD), link variables can also be used in synchronized actions.

On systems without an active NCU link, link variables can be used locally on the controller as additional global user variables alongside global user variables (GUD).

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1.1 Variables

Syntax

$A_DLB[<index>] $A_DLW[<index>] $A_DLD[<index>] $A_DLR[<index>]

Meaning

$A_DLB: Link variable for BYTE data format (1 byte)

Data type:

UINT

Range of values: 0 ... 255

$A_DLW: Link variable for WORD data format (2 bytes)

Data type:

INT

Range of values: -32768 ... 32767

$A_DLD: Link variable for DWORD data format (4 bytes)

Data type:

INT

Range of values: -2147483648 ... 2147483647 $A_DLR: Link variable for REAL data format (8 bytes)

Data type:

REAL

Range of values: ±(2.2*10-308 … 1.8*10+308)

<index>: Address index in bytes, counted from the start of the link variable memory

Data type:

INT

Range of values: 0 - MAX_INDEX

Note

MAX_INDEX is calculated from the parameterized size of the link variables memory: MAX_INDEX = (MD18700 $MN_MM_SIZEOF_LINKVAR_DATA) - 1

Only indices may be programmed, so that the bytes addressed in the link variables memory are located on a data format limit

Index = n * bytes, where n = 0, 1, 2, etc.

–$A_DLB[i]: i = 0, 1, 2, ...

–$A_DLW[i]: i = 0, 2, 4, ...

–$A_DLD[i]: i = 0, 4, 8, ...

–$A_DLR[i]: i = 0, 8, 16, ...

Example

An automation system contains 2 NCUs (NCU1 and NCU2). Machine axis AX2 is connected to NCU1. It is traversed as a link axis of NCU2.

NCU1 writes the actual current value ($VA_CURR) of axis AX2 cyclically to the link variables memory. NCU2 reads the actual current value transmitted via link communication cyclically and displays alarm 61000 if the limit value is exceeded.

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1.1 Variables

The data structure in the link variables memory is illustrated in the following figure. The actual current value is transmitted in the REAL value.

/LQN YDULDEOHV PHPRU\ 0' 01B00B6,=(2)B/,1.9$5B'$7$

,QGH[	%<7(	%<7(	:25'		':25'

	':25'				':25'

				5($/

NCU1

NCU1 uses link variable $A_DLR[ 16 ] to write the actual current value of axis AX2 to the link variables memory cyclically in the interpolation cycle in a static synchronized action.

Program code

N111 IDS=1 WHENEVER TRUE DO $A_DLR[16]=$VA_CURR[AX2]

NCU2

NCU2 uses link variable $A_DLR[ 16 ] to read the actual current value of axis AX2 from the link variables memory cyclically in the interpolation cycle in a static synchronized action. If the actual current value is greater than 23.0 A, alarm 61000 is displayed.

Program code

N222 IDS=1 WHEN $A_DLR[16] > 23.0 DO SETAL(61000)

1.1.4Definition of user variables (DEF)

Function

The DEF command is used to define user-specific variables and assign values to them. To set them apart from system variables, these are called user-defined variables or user variables (user data).

According to the range of validity (in other words, the range in which the variable is visible) there are the following categories of user variable:

●Local user variables (LUD)

Local user variables (LUD) are variables defined in a part program which is not the main program at the time of execution. They are created when the part program is called and deleted at the end of the part program or when the NC is reset. Local user variables can only be accessed within the part program in which they are defined.

●Program-global user variables (PUD)

Program-global user variables (PUD) are user variables defined in a part program used as the main program. They are created when the part program starts up and deleted at the end of the part program or when the NC is reset. It is possible to access PUD in the main program and in all subprograms of the main program.

●Global user variables (GUD)

Global user variables (GUD) are NC or channel-global variables which are defined in a data block (SGUD, MGUD, UGUD, GUD4 to GUD9) and are retained following shutdown and restart. GUD can be accessed in all part programs.

User variables must be defined before they can be used (read/write). The following rules must be observed in this context:

●GUD have to be defined in a definition file, e.g. _N_DEF_DIR/_M_SGUD_DEF.

●PUD and LUD have to be defined in a definition section of the part program.

●The data must be defined in a dedicated block.

●Only one data type may be used for each data definition.

●Several variables of the same data type can be defined for each data definition.

Syntax

LUD and PUD

DEF <type> <phys_unit> <limit values> <name>[<value_1>, <value_2>, <value_3>]=<init_value>

GUD

DEF <range> <pp_stop> <access_rights> <type> <phys_unit> <limit values> <name>[<value_1>, <value_2>, <value_3>]=<init_value>

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1.1 Variables

Meaning

DEF:	Command for defining GUD, PUD, LUD user variables
<range>:	Range of validity, only relevant for GUD:
	NCK:	NC-global user variable
<PP_stop>:	CHAN:	Channel-global user variable
<PP_stop>:	Preprocessing stop, only relevant for GUD (optional)
	SYNR:	Preprocessing stop when reading
	SYNW:	Preprocessing stop when writing
<access rights>:	SYNRW:	Preprocessing stop when reading/writing
<access rights>:	Protection level for reading/writing GUD via part program or OPI
	(optional)
	APRP <protection level>: Read: Part program
	APWP <protection level>: Write: Part program
	APRB <protection level>: Read: OPI
	APWB <protection level>: Write: OPI
	<protection level>:		Range of values: 0 ... 7
	See "Attribute: Access rights (APR, APW, APRP, APWP, APRB,
	APWB) (Page 39)"
<type>:	Data type:
	INT:		Integer with sign
	REAL:		Real number (LONG REAL to IEEE)
	BOOL:		Truth value TRUE (1)/FALSE (0)
	CHAR:		ASCII character
	STRING[<MaxLength>]:		Character string of a defined length
	AXIS:		Axis/spindle identifier
	FRAME:		Geometric data for a static coordinate
			transformation
	See "Data types (Page 52)"
<phys_unit>:	Physical unit (optional)
	PHU <unit>:		Physical unit
	See "Attribute: Physical unit (PHU) (Page 37)"
<limit values>:	Lower/upper limit value (optional)
	LLI <limit value>:		Lower limit value (lower limit)
	ULI <limit value>:		Upper limit value (upper limit)
	See "Attribute: Limit values (LLI, ULI) (Page 35)"

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1.1 Variables

<name>:	Name of variable
	Note
	Maximum 31 characters
	The first two characters must be a letter and/or an underscore.
	The $ sign is reserved for system variables and must not be
	used.

[<value_1>, <value_2>,

<value_3>]:

<init_value>:

Specification of array sizes for 1- to max. 3-dimensional array variables (optional)

For the Initialization of array variables see "Definition and initialization of array variables (DEF, SET, REP) (Page 45)"

Initialization value (optional)

See "Attribute: Initialization value (Page 32)"

For the Initialization of array variables see "Definition and initialization of array variables (DEF, SET, REP) (Page 45)"

Examples

Example 1: Definition of user variables in the data block for machine manufacturers

Program code	Comment
%_N_MGUD_DEF	; GUD block: Machine manufacturer
$PATH=/_N_DEF_DIR
DEF CHAN REAL PHU 24 LLI 0 ULI 10 STROM_1, STROM_2
;Description
;Definition of two GUD items: STROM_1, STROM_2

;Range of validity: Throughout the channel ;Data type: REAL

PP stop: Not programmed => default value = no PP stop ;Physical unit: 24 = [A]

;Limit values: Low = 0.0, high = 10.0

;Access rights: Not programmed => default value = 7 = key-operated switch position 0 ;Initialization value: Not programmed => default value = 0.0

DEF NCK REAL PHU 13 LLI 10 APWP 3 APRP 3 APWB 0 APRB 2 ZEIT_1=12, ZEIT_2=45 ;Description

;Definition of two GUD items: ZEIT_1, ZEIT_2 ;Range of validity: Throughout the NCK

;Data type: REAL

PP stop: Not programmed => default value = no PP stop ;Physical unit: 13 = [s]

;Limit values: low = 10.0, high = not programmed => upper definition range limit

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1.1 Variables

Program	code					Comment
;Access	rights:
;Part program: Write/read = 3			=	end	user
;OPI: Write = 0		= Siemens, read		= 3	=	end user
;Initialization		value: ZEIT_1	=	12.0,		ZEIT_2 = 45.0

DEF NCK APWP 3 APRP 3 APWB 0 APRB 3 STRING[5] GUD5_NAME = "COUNTER" ;Description

;Definition of one GUD item: GUD5_NAME ;Range of validity: Throughout the NCK ;Data type: STRING, max. 5 characters

PP stop: Not programmed => default value = no PP stop

;Physical unit: Not programmed => default value = 0 = no phys. unit

;Limit values: Not programmed => definition range limits: low = 0, high = 255 ;Access rights:

;Part program: Write/read = 3 = end user

;OPI: Write = 0 = Siemens, read = 3 = end user ;Initialization value: "COUNTER"

M30

Example 2: Global program and local user variables (PUD/LUD)

Program code	Comment
PROC MAIN	;Main program
DEF INT VAR1	;PUD definition
...
SUB2	;Subprogram call
...
M30

Program code	Comment
PROC SUB2	;Subprogram SUB2
DEF INT VAR2	;LUD DEFINITION
...
IF (VAR1==1)	;Read PUD
VAR1=VAR1+1	;Read & write PUD
VAR2=1	;Write LUD
ENDIF
SUB3	;subprogram call
...
M17

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1.1 Variables

Program code	Comment
PROC SUB3	;Subprogram SUB3
...
IF (VAR1==1)	;Read PUD
VAR1=VAR1+1	;Read & write PUD
VAR2=1	;Error: LUD from SUB2 not known
ENDIF
...
M17

Example 3: Definition and use of user variables of data type AXIS

Program code	Comment
DEF AXIS ABSCISSA	;1st geometry axis
DEF AXIS SPINDLE	;Spindle
...
IF ISAXIS(1) == FALSE GOTOF CONTINUE
ABSCISSA = $P_AXN1
CONTINUE:
...
SPINDLE=(S1)	;1st spindle
OVRA[SPINDLE]=80	;Spindle override = 80%
SPINDLE=(S3)	;3rd spindle

Supplementary conditions

Global user variables (GUD)

In the context of the definition of global user variables (GUD), the following machine data has to be taken into account:

	No.	Identifier: $MN_	Meaning
	11140	GUD_AREA_ SAVE_TAB	Additional save for GUD blocks
	18118 1)	MM_NUM_GUD_MODULES	Number of GUD files in the active file system
	18120 1)	MM_NUM_GUD_NAMES_NCK	Number of global GUD names
	18130 1)	MM_NUM_GUD_NAMES_CHAN	Number of channel-spec. GUD names
	18140 1)	MM_NUM_GUD_NAMES_AXIS	Number of axis-spec. GUD names
	18150 1)	MM_GUD_VALUES_MEM	Memory location for global GUD values
	18660 1)	MM_NUM_SYNACT_GUD_REAL	Number of configurable GUD of the REAL data type
	18661 1)	MM_NUM_SYNACT_GUD_INT	Number of configurable GUD of the INT data type
	18662 1)	MM_NUM_SYNACT_GUD_BOOL	Number of configurable GUD of the BOOL data type
	18663 1)	MM_NUM_SYNACT_GUD_AXIS	Number of configurable GUD of the AXIS data type
	18664 1)	MM_NUM_SYNACT_GUD_CHAR	Number of configurable GUD of the CHAR data type
	18665 1)	MM_NUM_SYNACT_GUD_STRING	Number of configurable GUD of the STRING data type
	1) For SINUMERIK 828D, MD can only be read!
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1.1 Variables

Program-global user variables (PUD)

Note

Visibility of program-global user variables (PUD)

Program-global user variables (PUD) defined in the main program will only be visible in subprograms if the following machine data is set:

MD11120 $MN_LUD_EXTENDED_SCOPE = 1

If MD11120 = 0 the program-global user variables defined in the main program will only be visible in the main program.

Cross-channel use of an NCK-global user variable of the AXIS data type

An NCK-global user variable of the AXIS data type initialized during definition in the data block with an axis identifier can then only be used in other NC channels if the axis has the same channel axis number in these channels.

If this is not the case, the variable has to be loaded at the start of the part program or, as in the following example, the AXNAME(...) function has to be used.

Program	code	Comment
DEF NCK	STRING[5] ACHSE="X"	;Definition		in the data block
...
N100 AX[AXNAME(ACHSE)]=111 G00		;Use in	the	part program

1.1.5Redefinition of system variables, user variables, and NC language commands (REDEF)

Function

The REDEF command can be used to change the attributes of system variables, user variables and NC language commands. A fundamental condition of redefinition is that it has to post-date the corresponding definition.

Multiple attributes cannot be changed simultaneously during redefinition. A separate REDEF statement has to be programmed for each attribute to be changed.

If two or more concurrent attribute changes are programmed, the last change is always active.

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Resetting attribute values

The attributes for access rights and initialization time change with REDEF can be reset to their default values by reprogramming REDEF, followed by the name of the variable or the NC language command:

●Access rights: Protection level 7

●Initialization time: No initialization or retention of the current value

Redefinable attributes

See "Overview of definable and redefinable attributes (Page 44)"

Local user variables (PUD/LUD)

Redefinitions are not permitted for local user variables (PUD/LUD).

Syntax

REDEF <name> <PP_stop>

REDEF <name> <phys_unit>

REDEF <name> <limit_values>

REDEF <name> <access_rights>

REDEF <name> <init_time>

REDEF <name> <init_time> <init_value>

REDEF <name>

Meaning

REDEF:	Command for redefinition of a certain attribute or to reset the
	"Access rights" and/or "Initialization time" attributes of system
	variables, user variables and NC language commands
<name>:	Name of an already defined variable or an NC language
	command
<PP stop>:	Preprocessing stop
	SYNR:	Preprocessing stop when reading
	SYNW:	Preprocessing stop when writing
<phys_unit>:	SYNRW:	Preprocessing stop when reading/writing
<phys_unit>:	Physical unit
	PHU <unit>:	Physical unit
	See "Attribute: Physical unit (PHU) (Page 37)"
	Note
	Cannot be redefined for:
	System variables
	Global user data (GUD) of the data types: BOOL, AXIS, STRING,

	FRAME
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