ISO 4343:2000

Industrial automation systems — Numerical control of machines — NC processor output — Post processor commands

This International Standard defines the elements of a set of post processor statements to be used in numerical control software. These statements are encoded on 2 000 class and 20 000 class CLDATA records or their equivalent. Each processor using one of the ISO numerical control programming languages shall be capable of producing post processor command type CLDATA records as defined in this International Standard. Each post processor shall be capable of using the post processor command type CLDATA records defined in this international Standard as input. This International Standard does not prescribe a) the mechanism by which the statements are processed; b) the medium on which the input language statements are recorded; c) the medium and format of output machine control data; d) the order of statements within a part program.

Systèmes d'automatisation industrielle — Commande numérique des machines — Informations de sortie des processeurs CN — Instructions post-processeur

General Information

• Status: Published
• Publication Date: 15-Nov-2000
• ICS: 25.040.20 - Numerically controlled machines
• Technical Committee: ISO/TC 184/SC 1 - Industrial cyber and physical device control
• Drafting Committee: ISO/TC 184/SC 1 - Industrial cyber and physical device control
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 07-Jun-2021

Relations

• Revises: ISO 4343:1978 - Numerical control of machines — NC processor output — Minor elements of 2000- type records (Post-processor commands)
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 4343
Second edition
2000-10-15
Industrial automation systems — Numerical
control of machines — NC processor
output — Post processor commands
Systèmes d'automatisation industrielle — Commande numérique des
machines — Informations de sortie des processeurs CN — Instructions
post-processeur
Reference number
ISO 4343:2000(E)
©
ISO 2000

---------------------- Page: 1 ----------------------
ISO 4343:2000(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not
be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this
file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this
area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters
were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event
that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2000
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body
in the country of the requester.
ISO copyright office
Case postale 56 � CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.ch
Printed in Switzerland
ii © ISO 2000 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 4343:2000(E)
Contents
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
1Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Co-ordinate system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.1 Part program reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.2 Machine program reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.3 Units of measure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4 General structure of post processor commands. . . . . . . . . . . . . . . . . . . . . 2
4.1 NC processor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4.2 CLDATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4.3 Post processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5 General language. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.1 General comments
5.2 The ADAPTV command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3 The AIR command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.4 The APPLY command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.5 The AUXFUN command
5.6 The BREAK command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.7 The CALSUB command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.8 The CLAMP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.9 The CLDATA command
5.10 The COUPLE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.11 The CUTCOM command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.12 The DEFSUB command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.13 The DELAY command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.14 The DISPLY command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.15 The END command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.16 The ENDSUB command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.17 The FEDRAT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.18 The GOHOME command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
© ISO 2000 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO 4343:2000(E)
5.19 The GOPARK command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.20 The HOMEPT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.21 The INCLUD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.22 The INSERT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.23 The LEADER command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.24 The LIMIT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.25 The LOCATE command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.26 The LPRINT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.27 The MACHIN command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.28 The MATERL command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.29 The MCHFIN command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.30 The MCHTOL command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.31 The MODE command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.32 The MOVETO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.33 The OPSKIP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
5.34 The OPSTOP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5.35 The ORIGIN command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.36 The PARKPT command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.37 The PARTNO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.38 The PPFUN command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.39 The PPRINT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5.40 The PPTIME command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.41 The PREFUN command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.42 The RAPID command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.43 The RESET command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
5.44 The REWIND command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.45 The SAFPOS command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.46 The SEQNO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5.47 The STOP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5.48 The SYNCTR command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
5.49 The TLLIFE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5.50 The TMARK command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
5.51 The TRANS command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
6 Die sinking EDM language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6.2 The APPLY command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.3 The CUTCOM command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6.4 The FLUSH command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
6.5 The GENRTR command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
6.6 The LOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6.7 The OP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.8 The SELECT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.9 The SPINDL command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
6.10 The TOOLNO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
6.11 The UNLOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
iv © ISO 2000 – All rights reserved

---------------------- Page: 4 ----------------------
ISO 4343:2000(E)
7 Flame cutting language. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.2 The APPLY command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
7.3 The ASSIST command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
7.4 The CLDIST command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.5 The PIERCE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
7.6 The TORCH command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
8 Grinding language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
8.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
8.2 The APPLY command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
8.3 The DRESS command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
9 Laser-beam machining language. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
9.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
9.2 The APPLY command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
9.3 The ASSIST command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
9.4 The CLDIST command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
9.5 The CYCLE command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
9.6 The PIERCE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10 Milling and drilling language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
10.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
10.2 The APPLY command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.3 The ARCSLP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.4 The CLAMP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
10.5 The CLEARP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
10.6 The COOLNT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
10.7 The CUTCOM command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
10.8 The CYCLE command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10.9 The HEAD command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
10.10 The INDPOS command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
10.11 The LINTOL command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
10.12 The LOAD command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
10.13 The ORIGIN command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
10.14 The RETRCT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
10.15 The ROTATE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
10.16 The SELECT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
10.17 The SPINDL command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
10.18 The TOOLNO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
10.19 The UNLOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
11 Punching and forming language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
11.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
11.2 The APPLY command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
11.3 The CLAMP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
© ISO 2000 – All rights reserved v

---------------------- Page: 5 ----------------------
ISO 4343:2000(E)
11.4 The CYCLE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
11.5 The LOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
11.6 The PIERCE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
11.7 The SELECT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
11.8 The TOOLNO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
11.9 The UNLOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
12 Turning language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
12.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
12.2 The APPLY command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
12.3 The BARFED command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
12.4 The CATCHR command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
12.5 The CHUCK command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
12.6 The CLAMP command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
12.7 The COOLNT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
12.8 The COUPLE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
12.9 The CUTCOM command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
12.10 The DEFCON command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
12.11 The LOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
12.12 The MODE command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
12.13 The OP command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
12.14 The PITCH command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
12.15 The SAFETY command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
12.16 The SELECT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
12.17 The SPINDL command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
12.18 The STAN command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
12.19 The STDYRS command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
12.20 The TLSTCK command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
12.21 The TOOLNO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
12.22 The TURRET command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
12.23 The UNLOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
13 Wire EDM language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
13.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
13.2 The APPLY command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
13.3 The CLDIST command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
13.4 The CUTCOM command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
13.5 The CYCLE command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
13.6 The FLUSH command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
13.7 The GENRTR command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
13.8 The LOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
13.9 The ORIGIN command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
13.10 The SELECT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
13.11 The STAN command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
13.12 The TOOLNO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
13.13 The UNLOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
vi © ISO 2000 – All rights reserved

---------------------- Page: 6 ----------------------
ISO 4343:2000(E)
14 Probing language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
14.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
14.2 The APPLY command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
14.3 The LOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
14.4 The MODE command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
14.5 The PROBE command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
14.6 The SELECT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
14.7 The TOOLNO command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
14.8 The UNLOAD command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
14.9 The VERIFY command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
15 Drafting and plotting language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
15.1 General comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
15.2 The DRAFT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
15.3 The LETTER command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
15.4 The OVPLOT command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
15.5 The PENDWN command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
15.6 The PENUP command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
15.7 The PPLOT command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Annex A (normative) Rules used in the syntax definitions . . . . . . . . . . . . . . . . 258
Annex B (normative) List of keywords. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
© ISO 2000 – All rights reserved vii

---------------------- Page: 7 ----------------------
ISO 4343:2000(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of
national standards bodies (ISO member bodies). The work of preparing International
Standards is normally carried out through ISO technical committees. Each member
body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmen-
tal and non-governmental, in liaison with ISO, also take part in the work. ISO collabo-
rates closely with the International Electrotechnical Commission (IEC) on all matters
of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC
Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the
member bodies for voting. Publication as an International Standard requires approval
by at least 75% of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International
Standard may be the subject of patent rights. ISO shall not be held responsible for
identifying any or all such patent rights.
International Standard ISO 4343 was prepared by Technical Committee ISO/TC 184,
Industrial automation systems and integration, Subcommittee SC 1, Physical device
control.
This second edition cancels and replaces the first edition (ISO 4343:1978), which has
been technically revised.
Annexes A and B form a normative part of this International Standard.
viii © ISO 2000 – All rights reserved

---------------------- Page: 8 ----------------------
ISO 4343:2000(E)
Introduction
The output of a general purpose numerical control processor is information used as
input to a post processor. This information is called CLDATA, which was originally
derived from “cutter location data.”
CLDATA provides a general language to pass manufacturing information from a
numerical control processor to a post processor, where the general language is
converted to the specific format required by the particular numerical control equipment.
The logical and physical structure of CLDATA records are given in ISO 3592.
This International Standard defines a standard post processor vocabulary, in the
context of command word and the parameters that can be associated with a command
word. This vocabulary is encoded using the 2 000 class (“integer code type post
processor command”) and 20 000 class (“literal type post processor command”)
CLDATA records given in ISO 3592.
There is a one-to-one correspondence between the elements of the post processor
vocabulary and the elements of the post processor command CLDATA records. The
integer code numbers given in annex B of this International Standard are the code
numbers that are used to represent keywords in the 2 000 class CLDATA records. The
keyword names given in annex B of this International Standard are the names that are
used to represent keywords in the 20 000 class CLDATA records.
Numerical control is applied to many types of machines, but the language defined in
this International Standard has been developed primarily for numerically controlled
machine tools – hence the words “tool” and “part” are used in the description of the
language to indicate the working element and processed element respectively. Many
of the vocabulary words are also derived from metal working terminology.
© ISO 2000 – All rights reserved ix

---------------------- Page: 9 ----------------------
INTERNATIONAL STANDARD
ISO 4343:2000(E)
Industrical automation systems — Numerical control of
machines — NC processor output —
Post processor commands
format for positioning, line motion and contouring control
1 Scope
systems.
This International Standard defines the elements of a set of
post processor statements to be used in numerical control
3 Co-ordinate system
software. These statements are encoded on 2 000 class
and 20 000 class CLDATA records or their equivalent.
3.1 Part program reference
Each processor using one of the ISO numerical control
programming languages shall be capable of producing post
ISO 841 is the basis for defining the co-ordinate system of
processor command type CLDATA records as defined in
CLDATA.
this International Standard.
Each post processor shall be capable of using the post
In the CLDATA, the reference axes of the co-ordinate
processor command type CLDATA records defined in this
system are x, y and z. Co-ordinates refer to a reference point
international Standard as input.
on a tool (usually the center of the tip) relative to the part
co-ordinate system. CLDATA can define the following loca-
This International Standard does not prescribe
tion and orientation components:
a) the mechanism by which the statements are processed;
x Dimension parallel to X
b) the medium on which the input language statements
y Dimension parallel to Y
are recorded;
z Dimension parallel to Z
c) the medium and format of output machine control data; i X axis component of the tool axis vector
j Y axis component of the tool axis vector
d) the order of statements within a part program.
k Z axis component of the tool axis vector
l X axis component of a secondary orientation vector
2 Normative references
m Y axis component of a secondary orientation vector
n Z axis component of a secondary orientation vector
The following normative documents contain provisions
which, through reference in this text, constitute provisions
Unless otherwise specified, post processor command di-
of this International Standard. For dated references, sub-
mensional values refer to the CLDATA co-ordinate system.
sequent amendments to, or revisions of, any of these pub-
The following syntax is permitted as replacement for strings
lications do not apply. However, parties to agreements
of numeric values representing CLDATA co-ordinates,
based on this International Standard are encouraged to
CLDATA tool orientation vectors and CLDATA secondary
investigate the possibility of applying the most recent edi-
orientation vectors.
tions of the normative documents indicated below. For
undated references, the latest edition of the normative
document referred to applies. Members of ISO and IEC
XCOORD,x
YCOORD,y
maintain registers of currently valid International Standards.
ZCOORD,z
TLVEC,i,j,k
1)
NORMAL,l,m,n
ISO 841 , Industrial automation systems – Numerical con-
COORD,x,y,z [,i,j,k [,l,m,n ] ]
trol of machines – Coordinate system and motion nomen-
clature.
3.2 Machine program reference
ISO 3592:2000, Industrial automation systems – Numerical
control of machines – NC processor output – File structure
ISO 841 is the basis for defining the standard configuration
and language format.
of machine axes.
ISO 4342:1985, Numerical control of machines – NC proc-
On the machine, the reference axes of the co-ordinate
essor input – Basic part program reference language.
system are x, y and z. Co-ordinates refer to a reference point
on the machine (usually the center face of the tool holding
ISO 6983-1:1982, Numerical control of machines – Pro-
mechanism) relative to the machine co-ordinate system.
gram format and definition of address words – Part 1: Data
The origin and alignment of the CLDATA and machine
reference systems coincide. Provision is made within this
1) To be published. (Revision of ISO 841:1974)
International Standard to define an alternate relationship
© ISO 2000 – All rights reserved 1

---------------------- Page: 10 ----------------------
ISO 4343:2000(E)
between CLDATA and machine reference systems. The preferred non dimensional keyword followed by the non
following machine axes are recognized: preferred dimensional alternates. Only preferred keywords
appear in syntax definitions. Non preferred keywords can
be substituted, however, their use is not encouraged.
a angular dimension about the X axis
b angular dimension about the Y axis
c angular dimension about the Z axis
Table 2 – Dimensional keywords
p tertiary dimension parallel to the X axis
q tertiary dimension parallel to the Y axis
Preferred keyword
r tertiary dimension parallel to the Z axis
u secondary dimension parallel to the X axis
Non-preferred alternate
v secondary dimension parallel to the Y axis
PERMIN CLDATA units per minute
w secondary dimension parallel to the Z axis
IPM inches per minute
x primary dimension parallel to the X axis
MMPM millimeters per minute
y primary dimension parallel to the Y axis
z primary dimension parallel to the Z axis PERREV CLDATA units per revolution of the spindle
IPR inches per revolution of the spindle
The following syntax is permitted as replacement for strings
MMPR millimeters per revolution of the spindle
of numeric values representing machine linear axis co-ordi-
TPI the reciprocal of IPR
nates:
MXPERM maximum CLDATA units per minute
MAXIPM maximum inches per minute
 PAXIS ,a
 QAXIS 
MXMMPM maximum millimeters per minute
 RAXIS 
CSS surface speed in CLDATA units per minute
 UAXIS 
 VAXIS 
SFM surface speed in feet per minute
 WAXIS 
SMM surface speed in meters per minute
 XAXIS 
 YAXIS 
 ZAXIS 
Unless otherwise specified and providing that the capability
exists, dimensional values appearing in the post processor
The following syntax is permitted for numeric values repre-
generated machine program shall be in the same reference
senting machine rotary axis co-ordinates. The initial HEAD
units as the CLDATA. Where this is impossible due to
or TABLE keyword further qualifies the rotary axis when
limitations of the machine, the post processor shall be
there are multiple axes providing rotation about a given axis.
responsible for converting the CLDATA units to the appro-
priate units supported by the machine. Provision is made
  HEAD , AAXIS ,a
within this International Standard to define explicit output
  TABLE  BAXIS 
units to be used for the entire machine program irrespective
      CAXIS 
of the CLDATA units.
         
      DAXIS 

...