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

Table D.1 - Implementation-dependent parameters
Sublause
Parameters
2.1.2
Maximum length of identifiers
2.1.5
Maximum comment length
2.1.6
Syntax and semantics of pragmas
2.2.2
Syntax and semantics for the use of the double-quote character when a
particular implementation supports feature 4 but not feature 2 of table 5.
2.3.1
Range of values and precision of representation for variables of type TIME,
DATE, TIME_OF_DAY and DATE_AND_TIME
Precision of representation of seconds in types TIME, TIME_OF_DAY and
DATE_AND_TIME
2.3.3.1
Maximum number of enumerated values
Maximum number of array subscripts
Maximum array size
Maximum number of structure elements
Maximum structure size
Maximum range of subscript values
Maximum number of levels of nested structures
2.3.3.2
Default maximum length of STRING and WSTRING variables
Maximum allowed length of STRING and WSTRING variables
2.4.1.1
Maximum number of hierarchical levels
Logical or physical mapping
2.4.2
Initialization of system inputs
2.4.3
Maximum number of variables per declaration
Effect of using AT qualifier in declaration of function block instances
Warm start behavior if variable is declared as neither RETAIN nor NON_RETAIN
2.5
Information to determine execution times of program organization units
2.5.1.2
Values of outputs when ENO is FALSE
2.5.1.3
Maximum number of function specifications
2.5.1.5
Maximum number of inputs of extensible functions
2.5.1.5.1
Effects of type conversions on accuracy
Error conditions during type conversions
2.5.1.5.2
Accuracy of numerical functions
2.5.1.5.6
Effects of type conversions between time data types and other data types not
defined in table 30
Copyright International Electrotechnical Commission 
Provided by IHS under license with IEC
Not for Resale
No reproduction or networking permitted without license from IHS
--``````-`-`,,`,,`,`,,`---

---

– 166 –
61131-3 
 IEC:2003(E)