Iec 61131-3 Second edition 2003-01 Programmable controllers – Part 3: Programming languages

Table C.2 - Keywords
Keywords
Subclause
FUNCTION...END_FUNCTION
2.5.1.3
Function names
2.5.1
FUNCTION_BLOCK...END_FUNCTION_BLOCK
2.5.2.2
Function Block names
2.5.2
IF...THEN...ELSIF...ELSE...END_IF
3.3.2.3
INITIAL_STEP...END_STEP
2.6.2
NOT
, MOD, 
AND
, 
XOR
, 
OR
3.3.1
PROGRAM...WITH...
2.7.1
PROGRAM...END_PROGRAM
2.5.3
R_EDGE
2.5.2.2
READ_ONLY, READ_WRITE
2.7.1
REPEAT...UNTIL...END_REPEAT
3.3.2.4
RESOURCE...ON...END_RESOURCE
2.7.1
RETAIN, NON_RETAIN
2.4.3
RETURN
3.3.2.2
STEP...END_STEP
2.6.2
STRUCT...END_STRUCT
2.3.3.1
TASK
2.7.2
TRANSITION...FROM...TO...END_TRANSITION
2.6.3
TRUE
2.2.1
TYPE...END_TYPE
2.3.3.1
VAR...END_VAR
2.4.3
VAR_INPUT...END_VAR
2.4.3
VAR_OUTPUT...END_VAR
2.4.3
VAR_IN_OUT...END_VAR
2.4.3
VAR_TEMP...END_VAR
2.4.3
VAR_EXTERNAL...END_VAR
2.4.3
VAR_ACCESS...END_VAR
2.7.1
VAR_CONFIG...END_VAR
2.7.1
VAR_GLOBAL...END_VAR
2.7.1
WHILE...DO...END_WHILE
3.3.2.4
WITH
2.7.1
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61131-3 
 IEC:2003(E)
– 165 –
ANNEX D
(normative)
Implementation-dependent parameters
The implementation-dependent parameters defined in this standard, and the primary reference clause
for each, are listed in table D.1.
NOTE Other implementation-dependent parameters such as the accuracy, precision and
repeatability of timing and execution control features may have significant effects on the
portability of programs but are beyond the scope of this part of IEC 61131.