Rockwell Automation Logix5000 Controllers IEC 61131-3 Compliance Programming Manual User Manual
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Rockwell Automation Publication 1756-PM018C-EN-P - November 2012
Chapter 1 IEC61131-3 Compliance
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4
DINT Data Type
Tag variable definition
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10
REAL Data Type
Tag variable definition
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Time
Tag variable definition, TIMER Structure
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STRING data type
8 Bits
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Data type Hierarchy
none
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Direct Derivation from elementary types
User Defined data type structures
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Array data types
Tag variable definition
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Structured Data types
User defined data type structures
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BOOL, SINT, INT, DINT initial value of 0
Tag variable definition
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4
REAL, LREAL initial value of 0.0
Tag variable definition
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5
Time initial value of T#0s
Tag variable definition, reset (RES) instruction
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Empty String ''
Descriptions and Strings
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Initialization of directly derived types
Import/export
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Initialization of array data types
Import/export
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Initialization of structured type elements
Import/export
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Initialization of derived structured data types
Import/export
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2a
Textual invocation, non-formal
Available in ST
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Use of EN and ENO
Function present in LD but not labeled. Available in FBD.
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Usage without EN and ENO
Available in FBD
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3
Usage with EN and without ENO
Available in FBD
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4
Usage without EN and with ENO
Available in FBD
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Overloaded functions ADD(INT, DINT) or ADD(DINT, REAL)
All overloaded types that are supported are documented with
each instruction
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_TO_ conversion function
RAD, DEG instructions Radians to/from Decimal. String numeric
conversion STOD, STOR, RTOS, DTOS. Others not needed
because of instruction overloading
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Truncate conversion function
TRN instruction in LD and TRUNC function in ST
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BCD to INT Convert
FRD instruction in LD
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INT to BCD Convert
TOD instruction in LD
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Absolute value
ABS instruction
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Square root
SQR instruction in LD and FBD and SQRT function in ST.
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Natural log
LN instruction
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Log base 10
LOG instruction
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Sine in radians
SIN instruction / function
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Cosine in radians
COS instruction / function
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Tangent in radians
TAN instruction / function
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Principal arc sine
ASN instruction in LD and FBD, and ASIN function in ST
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Principal arc cosine
ACS instruction in LD and FBD, and ACOS function in ST
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Principal arc tangent
ATN instruction in LD and FBD, and ATAN function in ST
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Arithmetic add
ADD instruction in LD and FBD, and + in ST.
Table Number:
(1)
Feature Number:
Feature Description:
Extensions and Implementation Notes: