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Introduction to IEC 61131-3 programming

Appendix

DDS-IEC61131 EN 2.0

6 Appendix

6.1 IEC keywords

Keywords are unique character combinations used as individual syntax elements.

• Keywords must not be used as identifiers.

• Keywords under the Drive PLC Developer Studio also include the names of Lenze function

blocks, that always start with ”L_” ( L_ABS , L_ADD , ...).

Keywords reserved for IEC 61131-3 programming languages:

ABS ACOS ACTION ADD AND ANDN

ANY ANY_BIT ANY_DATE ANY_INT ANY_NUM ANY_REAL

ARRAY

ASIN AT ATAN

BOOL BY BYTE

CAL CALC CALCN CASE CD CDT

CLK CONCAT CONFIGURA TION CONSTANT COS CTD

CTU

CTUD CU CV

DA TE DA TE_AND_TIME DELETE DINT DIV DO

DT DWORD

ELSE ESIF END_ACTION END_CASE END_CONFIGURATION END_FOR

END_FUNCTION END_FUNCTION_BLOCK END_IF END_PROGRAM END_REPEA T

END_RESOURCE END_STEP END_STRUCT END_TRANSITION END_TYPE END_VAR

END_WHILE EN ENO EQ ET EXIT

EXP

EXPT

F ALSE F_EDGE F_TRIG FIND FOR FROM

FUNCTION

FUNCTION_BLOCK

GE GT

IF IN INITIAL_STEP INSERT INT INTERVAL

JMP JMPC JMPCN

L LD LDN LE LEFT LEN

LIMIT LINT LN LOG LREAL LT

LWORD

MAX MID MIN MOD MOVE MUL

MUX

N NE NEG NOT

OF ON OR ORN

P PRIORITY PROGRAM PT PV

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Lenze DDS v2.0 Manual de usuario Pagina 20